Actual source code: pinit.c
petsc-3.10.5 2019-03-28
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      2: /*
      3:    This file defines the initialization of PETSc, including PetscInitialize()
      4: */
      5:  #include <petsc/private/petscimpl.h>
      6:  #include <petscvalgrind.h>
      7:  #include <petscviewer.h>

      9: #if defined(PETSC_USE_LOG)
     10: PETSC_INTERN PetscErrorCode PetscLogInitialize(void);
     11: PETSC_INTERN PetscErrorCode PetscLogFinalize(void);
     12: #endif

     14: #if defined(PETSC_SERIALIZE_FUNCTIONS)
     15: PETSC_INTERN PetscFPT PetscFPTData;
     16: PetscFPT PetscFPTData = 0;
     17: #endif

     19: #if defined(PETSC_HAVE_SAWS)
     20:  #include <petscviewersaws.h>
     21: #endif
     22: /* -----------------------------------------------------------------------------------------*/

     24: PETSC_INTERN FILE *petsc_history;

     26: PETSC_INTERN PetscErrorCode PetscInitialize_DynamicLibraries(void);
     27: PETSC_INTERN PetscErrorCode PetscFinalize_DynamicLibraries(void);
     28: PETSC_INTERN PetscErrorCode PetscFunctionListPrintAll(void);
     29: PETSC_INTERN PetscErrorCode PetscSequentialPhaseBegin_Private(MPI_Comm,int);
     30: PETSC_INTERN PetscErrorCode PetscSequentialPhaseEnd_Private(MPI_Comm,int);
     31: PETSC_INTERN PetscErrorCode PetscCloseHistoryFile(FILE**);

     33: /* user may set this BEFORE calling PetscInitialize() */
     34: MPI_Comm PETSC_COMM_WORLD = MPI_COMM_NULL;

     36: PetscMPIInt Petsc_Counter_keyval   = MPI_KEYVAL_INVALID;
     37: PetscMPIInt Petsc_InnerComm_keyval = MPI_KEYVAL_INVALID;
     38: PetscMPIInt Petsc_OuterComm_keyval = MPI_KEYVAL_INVALID;
     39: PetscMPIInt Petsc_ShmComm_keyval   = MPI_KEYVAL_INVALID;

     41: /*
     42:      Declare and set all the string names of the PETSc enums
     43: */
     44: const char *const PetscBools[]     = {"FALSE","TRUE","PetscBool","PETSC_",0};
     45: const char *const PetscCopyModes[] = {"COPY_VALUES","OWN_POINTER","USE_POINTER","PetscCopyMode","PETSC_",0};
     46: const char *const PetscDataTypes[] = {"INT","DOUBLE","COMPLEX","LONG","SHORT","FLOAT",
     47:                                       "CHAR","LOGICAL","ENUM","BOOL","LONGDOUBLE","OBJECT","FUNCTION","PetscDataType","PETSC_",0};

     49: PetscBool PetscPreLoadingUsed = PETSC_FALSE;
     50: PetscBool PetscPreLoadingOn   = PETSC_FALSE;

     52: PetscInt PetscHotRegionDepth;

     54: #if defined(PETSC_HAVE_THREADSAFETY)
     55: PetscSpinlock PetscViewerASCIISpinLockOpen;
     56: PetscSpinlock PetscViewerASCIISpinLockStdout;
     57: PetscSpinlock PetscViewerASCIISpinLockStderr;
     58: PetscSpinlock PetscCommSpinLock;
     59: #endif

     61: /*
     62:        Checks the options database for initializations related to the
     63:     PETSc components
     64: */
     65: PETSC_INTERN PetscErrorCode  PetscOptionsCheckInitial_Components(void)
     66: {
     67:   PetscBool      flg;

     71:   PetscOptionsHasHelp(NULL,&flg);
     72:   if (flg) {
     73: #if defined(PETSC_USE_LOG)
     74:     MPI_Comm comm = PETSC_COMM_WORLD;
     75:     (*PetscHelpPrintf)(comm,"------Additional PETSc component options--------\n");
     76:     (*PetscHelpPrintf)(comm," -log_exclude: <vec,mat,pc,ksp,snes,tao,ts>\n");
     77:     (*PetscHelpPrintf)(comm," -info_exclude: <null,vec,mat,pc,ksp,snes,tao,ts>\n");
     78:     (*PetscHelpPrintf)(comm,"-----------------------------------------------\n");
     79: #endif
     80:   }
     81:   return(0);
     82: }

     84: /*
     85:       PetscInitializeNoPointers - Calls PetscInitialize() from C/C++ without the pointers to argc and args

     87:    Collective

     89:    Level: advanced

     91:     Notes:
     92:     this is called only by the PETSc Julia interface. Even though it might start MPI it sets the flag to
     93:      indicate that it did NOT start MPI so that the PetscFinalize() does not end MPI, thus allowing PetscInitialize() to
     94:      be called multiple times from Julia without the problem of trying to initialize MPI more than once.

     96:      Developer Note: Turns off PETSc signal handling to allow Julia to manage signals

     98: .seealso: PetscInitialize(), PetscInitializeFortran(), PetscInitializeNoArguments()
     99: */
    100: PetscErrorCode  PetscInitializeNoPointers(int argc,char **args,const char *filename,const char *help)
    101: {
    103:   int            myargc   = argc;
    104:   char           **myargs = args;

    107:   PetscInitialize(&myargc,&myargs,filename,help);
    108:   PetscPopSignalHandler();
    109:   PetscBeganMPI = PETSC_FALSE;
    110:   PetscFunctionReturn(ierr);
    111: }

    113: /*
    114:       Used by Julia interface to get communicator
    115: */
    116: PetscErrorCode  PetscGetPETSC_COMM_SELF(MPI_Comm *comm)
    117: {
    119:   *comm = PETSC_COMM_SELF;
    120:   return(0);
    121: }

    123: /*@C
    124:       PetscInitializeNoArguments - Calls PetscInitialize() from C/C++ without
    125:         the command line arguments.

    127:    Collective

    129:    Level: advanced

    131: .seealso: PetscInitialize(), PetscInitializeFortran()
    132: @*/
    133: PetscErrorCode  PetscInitializeNoArguments(void)
    134: {
    136:   int            argc   = 0;
    137:   char           **args = 0;

    140:   PetscInitialize(&argc,&args,NULL,NULL);
    141:   PetscFunctionReturn(ierr);
    142: }

    144: /*@
    145:       PetscInitialized - Determine whether PETSc is initialized.

    147:    Level: beginner

    149: .seealso: PetscInitialize(), PetscInitializeNoArguments(), PetscInitializeFortran()
    150: @*/
    151: PetscErrorCode PetscInitialized(PetscBool  *isInitialized)
    152: {
    153:   *isInitialized = PetscInitializeCalled;
    154:   return 0;
    155: }

    157: /*@
    158:       PetscFinalized - Determine whether PetscFinalize() has been called yet

    160:    Level: developer

    162: .seealso: PetscInitialize(), PetscInitializeNoArguments(), PetscInitializeFortran()
    163: @*/
    164: PetscErrorCode  PetscFinalized(PetscBool  *isFinalized)
    165: {
    166:   *isFinalized = PetscFinalizeCalled;
    167:   return 0;
    168: }

    170: PETSC_INTERN PetscErrorCode PetscOptionsCheckInitial_Private(void);

    172: /*
    173:        This function is the MPI reduction operation used to compute the sum of the
    174:    first half of the datatype and the max of the second half.
    175: */
    176: MPI_Op MPIU_MAXSUM_OP = 0;

    178: PETSC_INTERN void MPIAPI MPIU_MaxSum_Local(void *in,void *out,int *cnt,MPI_Datatype *datatype)
    179: {
    180:   PetscInt *xin = (PetscInt*)in,*xout = (PetscInt*)out,i,count = *cnt;

    183:   if (*datatype != MPIU_2INT) {
    184:     (*PetscErrorPrintf)("Can only handle MPIU_2INT data types");
    185:     MPI_Abort(MPI_COMM_WORLD,1);
    186:   }

    188:   for (i=0; i<count; i++) {
    189:     xout[2*i]    = PetscMax(xout[2*i],xin[2*i]);
    190:     xout[2*i+1] += xin[2*i+1];
    191:   }
    192:   PetscFunctionReturnVoid();
    193: }

    195: /*
    196:     Returns the max of the first entry owned by this processor and the
    197: sum of the second entry.

    199:     The reason sizes[2*i] contains lengths sizes[2*i+1] contains flag of 1 if length is nonzero
    200: is so that the MPIU_MAXSUM_OP() can set TWO values, if we passed in only sizes[i] with lengths
    201: there would be no place to store the both needed results.
    202: */
    203: PetscErrorCode  PetscMaxSum(MPI_Comm comm,const PetscInt sizes[],PetscInt *max,PetscInt *sum)
    204: {

    208: #if defined(PETSC_HAVE_MPI_REDUCE_SCATTER_BLOCK)
    209:   {
    210:     struct {PetscInt max,sum;} work;
    211:     MPI_Reduce_scatter_block((void*)sizes,&work,1,MPIU_2INT,MPIU_MAXSUM_OP,comm);
    212:     *max = work.max;
    213:     *sum = work.sum;
    214:   }
    215: #else
    216:   {
    217:     PetscMPIInt    size,rank;
    218:     struct {PetscInt max,sum;} *work;
    219:     MPI_Comm_size(comm,&size);
    220:     MPI_Comm_rank(comm,&rank);
    221:     PetscMalloc1(size,&work);
    222:     MPIU_Allreduce((void*)sizes,work,size,MPIU_2INT,MPIU_MAXSUM_OP,comm);
    223:     *max = work[rank].max;
    224:     *sum = work[rank].sum;
    225:     PetscFree(work);
    226:   }
    227: #endif
    228:   return(0);
    229: }

    231: /* ----------------------------------------------------------------------------*/

    233: #if (defined(PETSC_HAVE_COMPLEX) && !defined(PETSC_HAVE_MPI_C_DOUBLE_COMPLEX)) || defined(PETSC_USE_REAL___FLOAT128) || defined(PETSC_USE_REAL___FP16)
    234: MPI_Op MPIU_SUM = 0;

    236: PETSC_EXTERN void PetscSum_Local(void *in,void *out,PetscMPIInt *cnt,MPI_Datatype *datatype)
    237: {
    238:   PetscInt i,count = *cnt;

    241:   if (*datatype == MPIU_REAL) {
    242:     PetscReal *xin = (PetscReal*)in,*xout = (PetscReal*)out;
    243:     for (i=0; i<count; i++) xout[i] += xin[i];
    244:   }
    245: #if defined(PETSC_HAVE_COMPLEX)
    246:   else if (*datatype == MPIU_COMPLEX) {
    247:     PetscComplex *xin = (PetscComplex*)in,*xout = (PetscComplex*)out;
    248:     for (i=0; i<count; i++) xout[i] += xin[i];
    249:   }
    250: #endif
    251:   else {
    252:     (*PetscErrorPrintf)("Can only handle MPIU_REAL or MPIU_COMPLEX data types");
    253:     MPI_Abort(MPI_COMM_WORLD,1);
    254:   }
    255:   PetscFunctionReturnVoid();
    256: }
    257: #endif

    259: #if defined(PETSC_USE_REAL___FLOAT128) || defined(PETSC_USE_REAL___FP16)
    260: MPI_Op MPIU_MAX = 0;
    261: MPI_Op MPIU_MIN = 0;

    263: PETSC_EXTERN void PetscMax_Local(void *in,void *out,PetscMPIInt *cnt,MPI_Datatype *datatype)
    264: {
    265:   PetscInt i,count = *cnt;

    268:   if (*datatype == MPIU_REAL) {
    269:     PetscReal *xin = (PetscReal*)in,*xout = (PetscReal*)out;
    270:     for (i=0; i<count; i++) xout[i] = PetscMax(xout[i],xin[i]);
    271:   }
    272: #if defined(PETSC_HAVE_COMPLEX)
    273:   else if (*datatype == MPIU_COMPLEX) {
    274:     PetscComplex *xin = (PetscComplex*)in,*xout = (PetscComplex*)out;
    275:     for (i=0; i<count; i++) {
    276:       xout[i] = PetscRealPartComplex(xout[i])<PetscRealPartComplex(xin[i]) ? xin[i] : xout[i];
    277:     }
    278:   }
    279: #endif
    280:   else {
    281:     (*PetscErrorPrintf)("Can only handle MPIU_REAL or MPIU_COMPLEX data types");
    282:     MPI_Abort(MPI_COMM_WORLD,1);
    283:   }
    284:   PetscFunctionReturnVoid();
    285: }

    287: PETSC_EXTERN void PetscMin_Local(void *in,void *out,PetscMPIInt *cnt,MPI_Datatype *datatype)
    288: {
    289:   PetscInt    i,count = *cnt;

    292:   if (*datatype == MPIU_REAL) {
    293:     PetscReal *xin = (PetscReal*)in,*xout = (PetscReal*)out;
    294:     for (i=0; i<count; i++) xout[i] = PetscMin(xout[i],xin[i]);
    295:   }
    296: #if defined(PETSC_HAVE_COMPLEX)
    297:   else if (*datatype == MPIU_COMPLEX) {
    298:     PetscComplex *xin = (PetscComplex*)in,*xout = (PetscComplex*)out;
    299:     for (i=0; i<count; i++) {
    300:       xout[i] = PetscRealPartComplex(xout[i])>PetscRealPartComplex(xin[i]) ? xin[i] : xout[i];
    301:     }
    302:   }
    303: #endif
    304:   else {
    305:     (*PetscErrorPrintf)("Can only handle MPIU_REAL or MPIU_SCALAR data (i.e. double or complex) types");
    306:     MPI_Abort(MPI_COMM_WORLD,1);
    307:   }
    308:   PetscFunctionReturnVoid();
    309: }
    310: #endif

    312: /*
    313:    Private routine to delete internal tag/name counter storage when a communicator is freed.

    315:    This is called by MPI, not by users. This is called by MPI_Comm_free() when the communicator that has this  data as an attribute is freed.

    317:    Note: this is declared extern "C" because it is passed to MPI_Comm_create_keyval()

    319: */
    320: PETSC_EXTERN PetscMPIInt MPIAPI Petsc_DelCounter(MPI_Comm comm,PetscMPIInt keyval,void *count_val,void *extra_state)
    321: {

    325:   PetscInfo1(0,"Deleting counter data in an MPI_Comm %ld\n",(long)comm);CHKERRMPI(ierr);
    326:   PetscFree(count_val);CHKERRMPI(ierr);
    327:   PetscFunctionReturn(MPI_SUCCESS);
    328: }

    330: /*
    331:   This is invoked on the outer comm as a result of either PetscCommDestroy() (via MPI_Comm_delete_attr) or when the user
    332:   calls MPI_Comm_free().

    334:   This is the only entry point for breaking the links between inner and outer comms.

    336:   This is called by MPI, not by users. This is called when MPI_Comm_free() is called on the communicator.

    338:   Note: this is declared extern "C" because it is passed to MPI_Comm_create_keyval()

    340: */
    341: PETSC_EXTERN PetscMPIInt MPIAPI Petsc_DelComm_Outer(MPI_Comm comm,PetscMPIInt keyval,void *attr_val,void *extra_state)
    342: {
    343:   PetscErrorCode                    ierr;
    344:   PetscMPIInt                       flg;
    345:   union {MPI_Comm comm; void *ptr;} icomm,ocomm;

    348:   if (keyval != Petsc_InnerComm_keyval) SETERRMPI(PETSC_COMM_SELF,PETSC_ERR_ARG_CORRUPT,"Unexpected keyval");
    349:   icomm.ptr = attr_val;

    351:   MPI_Comm_get_attr(icomm.comm,Petsc_OuterComm_keyval,&ocomm,&flg);CHKERRMPI(ierr);
    352:   if (!flg) SETERRMPI(PETSC_COMM_SELF,PETSC_ERR_ARG_CORRUPT,"Inner MPI_Comm does not have expected reference to outer comm");
    353:   if (ocomm.comm != comm) SETERRMPI(PETSC_COMM_SELF,PETSC_ERR_ARG_CORRUPT,"Inner MPI_Comm has reference to non-matching outer comm");
    354:   MPI_Comm_delete_attr(icomm.comm,Petsc_OuterComm_keyval);CHKERRMPI(ierr);
    355:   PetscInfo1(0,"User MPI_Comm %ld is being freed after removing reference from inner PETSc comm to this outer comm\n",(long)comm);CHKERRMPI(ierr);
    356:   PetscFunctionReturn(MPI_SUCCESS);
    357: }

    359: /*
    360:  * This is invoked on the inner comm when Petsc_DelComm_Outer calls MPI_Comm_delete_attr.  It should not be reached any other way.
    361:  */
    362: PETSC_EXTERN PetscMPIInt MPIAPI Petsc_DelComm_Inner(MPI_Comm comm,PetscMPIInt keyval,void *attr_val,void *extra_state)
    363: {

    367:   PetscInfo1(0,"Removing reference to PETSc communicator embedded in a user MPI_Comm %ld\n",(long)comm);CHKERRMPI(ierr);
    368:   PetscFunctionReturn(MPI_SUCCESS);
    369: }

    371: PETSC_EXTERN PetscMPIInt MPIAPI Petsc_DelComm_Shm(MPI_Comm,PetscMPIInt,void *,void *);

    373: #if defined(PETSC_USE_PETSC_MPI_EXTERNAL32)
    374: #if !defined(PETSC_WORDS_BIGENDIAN)
    375: PETSC_EXTERN PetscMPIInt PetscDataRep_extent_fn(MPI_Datatype,MPI_Aint*,void*);
    376: PETSC_EXTERN PetscMPIInt PetscDataRep_read_conv_fn(void*, MPI_Datatype,PetscMPIInt,void*,MPI_Offset,void*);
    377: PETSC_EXTERN PetscMPIInt PetscDataRep_write_conv_fn(void*, MPI_Datatype,PetscMPIInt,void*,MPI_Offset,void*);
    378: #endif
    379: #endif

    381: PetscMPIInt PETSC_MPI_ERROR_CLASS,PETSC_MPI_ERROR_CODE;

    383: PETSC_INTERN int  PetscGlobalArgc;
    384: PETSC_INTERN char **PetscGlobalArgs;
    385: int  PetscGlobalArgc   = 0;
    386: char **PetscGlobalArgs = 0;
    387: PetscSegBuffer PetscCitationsList;

    389: PetscErrorCode PetscCitationsInitialize(void)
    390: {

    394:   PetscSegBufferCreate(1,10000,&PetscCitationsList);
    395:   PetscCitationsRegister("@TechReport{petsc-user-ref,\n  Author = {Satish Balay and Shrirang Abhyankar and Mark F. Adams and Jed Brown and Peter Brune\n            and Kris Buschelman and Lisandro Dalcin and Victor Eijkhout and William D. Gropp\n            and Dinesh Kaushik and Matthew G. Knepley and Dave A. May and Lois Curfman McInnes\n            and Richard Tran Mills and Todd Munson and Karl Rupp and Patrick Sanan\n            and Barry F. Smith and Stefano Zampini and Hong Zhang and Hong Zhang},\n  Title = {{PETS}c Users Manual},\n  Number = {ANL-95/11 - Revision 3.9},\n  Institution = {Argonne National Laboratory},\n  Year = {2018}\n}\n",NULL);
    396:   PetscCitationsRegister("@InProceedings{petsc-efficient,\n  Author = {Satish Balay and William D. Gropp and Lois Curfman McInnes and Barry F. Smith},\n  Title = {Efficient Management of Parallelism in Object Oriented Numerical Software Libraries},\n  Booktitle = {Modern Software Tools in Scientific Computing},\n  Editor = {E. Arge and A. M. Bruaset and H. P. Langtangen},\n  Pages = {163--202},\n  Publisher = {Birkh{\\\"{a}}user Press},\n  Year = {1997}\n}\n",NULL);
    397:   return(0);
    398: }

    400: static char programname[PETSC_MAX_PATH_LEN] = ""; /* HP includes entire path in name */

    402: PetscErrorCode  PetscSetProgramName(const char name[])
    403: {

    407:   PetscStrncpy(programname,name,PETSC_MAX_PATH_LEN);
    408:   return(0);
    409: }

    411: /*@C
    412:     PetscGetProgramName - Gets the name of the running program.

    414:     Not Collective

    416:     Input Parameter:
    417: .   len - length of the string name

    419:     Output Parameter:
    420: .   name - the name of the running program

    422:    Level: advanced

    424:     Notes:
    425:     The name of the program is copied into the user-provided character
    426:     array of length len.  On some machines the program name includes
    427:     its entire path, so one should generally set len >= PETSC_MAX_PATH_LEN.
    428: @*/
    429: PetscErrorCode  PetscGetProgramName(char name[],size_t len)
    430: {

    434:    PetscStrncpy(name,programname,len);
    435:   return(0);
    436: }

    438: /*@C
    439:    PetscGetArgs - Allows you to access the raw command line arguments anywhere
    440:      after PetscInitialize() is called but before PetscFinalize().

    442:    Not Collective

    444:    Output Parameters:
    445: +  argc - count of number of command line arguments
    446: -  args - the command line arguments

    448:    Level: intermediate

    450:    Notes:
    451:       This is usually used to pass the command line arguments into other libraries
    452:    that are called internally deep in PETSc or the application.

    454:       The first argument contains the program name as is normal for C arguments.

    456:    Concepts: command line arguments

    458: .seealso: PetscFinalize(), PetscInitializeFortran(), PetscGetArguments()

    460: @*/
    461: PetscErrorCode  PetscGetArgs(int *argc,char ***args)
    462: {
    464:   if (!PetscInitializeCalled && PetscFinalizeCalled) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ORDER,"You must call after PetscInitialize() but before PetscFinalize()");
    465:   *argc = PetscGlobalArgc;
    466:   *args = PetscGlobalArgs;
    467:   return(0);
    468: }

    470: /*@C
    471:    PetscGetArguments - Allows you to access the  command line arguments anywhere
    472:      after PetscInitialize() is called but before PetscFinalize().

    474:    Not Collective

    476:    Output Parameters:
    477: .  args - the command line arguments

    479:    Level: intermediate

    481:    Notes:
    482:       This does NOT start with the program name and IS null terminated (final arg is void)

    484:    Concepts: command line arguments

    486: .seealso: PetscFinalize(), PetscInitializeFortran(), PetscGetArgs(), PetscFreeArguments()

    488: @*/
    489: PetscErrorCode  PetscGetArguments(char ***args)
    490: {
    491:   PetscInt       i,argc = PetscGlobalArgc;

    495:   if (!PetscInitializeCalled && PetscFinalizeCalled) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ORDER,"You must call after PetscInitialize() but before PetscFinalize()");
    496:   if (!argc) {*args = NULL; return(0);}
    497:   PetscMalloc1(argc,args);
    498:   for (i=0; i<argc-1; i++) {
    499:     PetscStrallocpy(PetscGlobalArgs[i+1],&(*args)[i]);
    500:   }
    501:   (*args)[argc-1] = NULL;
    502:   return(0);
    503: }

    505: /*@C
    506:    PetscFreeArguments - Frees the memory obtained with PetscGetArguments()

    508:    Not Collective

    510:    Output Parameters:
    511: .  args - the command line arguments

    513:    Level: intermediate

    515:    Concepts: command line arguments

    517: .seealso: PetscFinalize(), PetscInitializeFortran(), PetscGetArgs(), PetscGetArguments()

    519: @*/
    520: PetscErrorCode  PetscFreeArguments(char **args)
    521: {
    522:   PetscInt       i = 0;

    526:   if (!args) return(0);
    527:   while (args[i]) {
    528:     PetscFree(args[i]);
    529:     i++;
    530:   }
    531:   PetscFree(args);
    532:   return(0);
    533: }

    535: #if defined(PETSC_HAVE_SAWS)
    536: #include <petscconfiginfo.h>

    538: PETSC_INTERN PetscErrorCode PetscInitializeSAWs(const char help[])
    539: {
    540:   if (!PetscGlobalRank) {
    541:     char           cert[PETSC_MAX_PATH_LEN],root[PETSC_MAX_PATH_LEN],*intro,programname[64],*appline,*options,version[64];
    542:     int            port;
    543:     PetscBool      flg,rootlocal = PETSC_FALSE,flg2,selectport = PETSC_FALSE;
    544:     size_t         applinelen,introlen;
    546:     char           sawsurl[256];

    548:     PetscOptionsHasName(NULL,NULL,"-saws_log",&flg);
    549:     if (flg) {
    550:       char  sawslog[PETSC_MAX_PATH_LEN];

    552:       PetscOptionsGetString(NULL,NULL,"-saws_log",sawslog,PETSC_MAX_PATH_LEN,NULL);
    553:       if (sawslog[0]) {
    554:         PetscStackCallSAWs(SAWs_Set_Use_Logfile,(sawslog));
    555:       } else {
    556:         PetscStackCallSAWs(SAWs_Set_Use_Logfile,(NULL));
    557:       }
    558:     }
    559:     PetscOptionsGetString(NULL,NULL,"-saws_https",cert,PETSC_MAX_PATH_LEN,&flg);
    560:     if (flg) {
    561:       PetscStackCallSAWs(SAWs_Set_Use_HTTPS,(cert));
    562:     }
    563:     PetscOptionsGetBool(NULL,NULL,"-saws_port_auto_select",&selectport,NULL);
    564:     if (selectport) {
    565:         PetscStackCallSAWs(SAWs_Get_Available_Port,(&port));
    566:         PetscStackCallSAWs(SAWs_Set_Port,(port));
    567:     } else {
    568:       PetscOptionsGetInt(NULL,NULL,"-saws_port",&port,&flg);
    569:       if (flg) {
    570:         PetscStackCallSAWs(SAWs_Set_Port,(port));
    571:       }
    572:     }
    573:     PetscOptionsGetString(NULL,NULL,"-saws_root",root,PETSC_MAX_PATH_LEN,&flg);
    574:     if (flg) {
    575:       PetscStackCallSAWs(SAWs_Set_Document_Root,(root));
    576:       PetscStrcmp(root,".",&rootlocal);
    577:     } else {
    578:       PetscOptionsHasName(NULL,NULL,"-saws_options",&flg);
    579:       if (flg) {
    580:         PetscStrreplace(PETSC_COMM_WORLD,"${PETSC_DIR}/share/petsc/saws",root,PETSC_MAX_PATH_LEN);
    581:         PetscStackCallSAWs(SAWs_Set_Document_Root,(root));
    582:       }
    583:     }
    584:     PetscOptionsHasName(NULL,NULL,"-saws_local",&flg2);
    585:     if (flg2) {
    586:       char jsdir[PETSC_MAX_PATH_LEN];
    587:       if (!flg) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_SUP,"-saws_local option requires -saws_root option");
    588:       PetscSNPrintf(jsdir,PETSC_MAX_PATH_LEN,"%s/js",root);
    589:       PetscTestDirectory(jsdir,'r',&flg);
    590:       if (!flg) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_FILE_READ,"-saws_local option requires js directory in root directory");
    591:       PetscStackCallSAWs(SAWs_Push_Local_Header,());
    592:     }
    593:     PetscGetProgramName(programname,64);
    594:     PetscStrlen(help,&applinelen);
    595:     introlen   = 4096 + applinelen;
    596:     applinelen += 1024;
    597:     PetscMalloc(applinelen,&appline);
    598:     PetscMalloc(introlen,&intro);

    600:     if (rootlocal) {
    601:       PetscSNPrintf(appline,applinelen,"%s.c.html",programname);
    602:       PetscTestFile(appline,'r',&rootlocal);
    603:     }
    604:     PetscOptionsGetAll(NULL,&options);
    605:     if (rootlocal && help) {
    606:       PetscSNPrintf(appline,applinelen,"<center> Running <a href=\"%s.c.html\">%s</a> %s</center><br><center><pre>%s</pre></center><br>\n",programname,programname,options,help);
    607:     } else if (help) {
    608:       PetscSNPrintf(appline,applinelen,"<center>Running %s %s</center><br><center><pre>%s</pre></center><br>",programname,options,help);
    609:     } else {
    610:       PetscSNPrintf(appline,applinelen,"<center> Running %s %s</center><br>\n",programname,options);
    611:     }
    612:     PetscFree(options);
    613:     PetscGetVersion(version,sizeof(version));
    614:     PetscSNPrintf(intro,introlen,"<body>\n"
    615:                                     "<center><h2> <a href=\"http://www.mcs.anl.gov/petsc\">PETSc</a> Application Web server powered by <a href=\"https://bitbucket.org/saws/saws\">SAWs</a> </h2></center>\n"
    616:                                     "<center>This is the default PETSc application dashboard, from it you can access any published PETSc objects or logging data</center><br><center>%s configured with %s</center><br>\n"
    617:                                     "%s",version,petscconfigureoptions,appline);
    618:     PetscStackCallSAWs(SAWs_Push_Body,("index.html",0,intro));
    619:     PetscFree(intro);
    620:     PetscFree(appline);
    621:     if (selectport) {
    622:       PetscBool silent;

    624:       SAWs_Initialize();
    625:       /* another process may have grabbed the port so keep trying */
    626:       while (ierr) {
    627:         PetscStackCallSAWs(SAWs_Get_Available_Port,(&port));
    628:         PetscStackCallSAWs(SAWs_Set_Port,(port));
    629:         SAWs_Initialize();
    630:       }

    632:       PetscOptionsGetBool(NULL,NULL,"-saws_port_auto_select_silent",&silent,NULL);
    633:       if (!silent) {
    634:         PetscStackCallSAWs(SAWs_Get_FullURL,(sizeof(sawsurl),sawsurl));
    635:         PetscPrintf(PETSC_COMM_WORLD,"Point your browser to %s for SAWs\n",sawsurl);
    636:       }
    637:     } else {
    638:       PetscStackCallSAWs(SAWs_Initialize,());
    639:     }
    640:     PetscCitationsRegister("@TechReport{ saws,\n"
    641:                                   "  Author = {Matt Otten and Jed Brown and Barry Smith},\n"
    642:                                   "  Title  = {Scientific Application Web Server (SAWs) Users Manual},\n"
    643:                                   "  Institution = {Argonne National Laboratory},\n"
    644:                                   "  Year   = 2013\n}\n",NULL);
    645:   }
    646:   return(0);
    647: }
    648: #endif

    650: #if defined(PETSC_HAVE_ADIOS)
    651: #include <adios.h>
    652: #include <adios_read.h>
    653: int64_t Petsc_adios_group;
    654: #endif
    655: #if defined(PETSC_HAVE_ADIOS2)
    656: #include <adios2_c.h>
    657: #endif

    659: /*@C
    660:    PetscInitialize - Initializes the PETSc database and MPI.
    661:    PetscInitialize() calls MPI_Init() if that has yet to be called,
    662:    so this routine should always be called near the beginning of
    663:    your program -- usually the very first line!

    665:    Collective on MPI_COMM_WORLD or PETSC_COMM_WORLD if it has been set

    667:    Input Parameters:
    668: +  argc - count of number of command line arguments
    669: .  args - the command line arguments
    670: .  file - [optional] PETSc database file, also checks ~username/.petscrc and .petscrc use NULL to not check for
    671:           code specific file. Use -skip_petscrc in the code specific file to skip the .petscrc files
    672: -  help - [optional] Help message to print, use NULL for no message

    674:    If you wish PETSc code to run ONLY on a subcommunicator of MPI_COMM_WORLD, create that
    675:    communicator first and assign it to PETSC_COMM_WORLD BEFORE calling PetscInitialize(). Thus if you are running a
    676:    four process job and two processes will run PETSc and have PetscInitialize() and PetscFinalize() and two process will not,
    677:    then do this. If ALL processes in the job are using PetscInitialize() and PetscFinalize() then you don't need to do this, even
    678:    if different subcommunicators of the job are doing different things with PETSc.

    680:    Options Database Keys:
    681: +  -help [intro] - prints help method for each option; if intro is given the program stops after printing the introductory help message
    682: .  -start_in_debugger [noxterm,dbx,xdb,gdb,...] - Starts program in debugger
    683: .  -on_error_attach_debugger [noxterm,dbx,xdb,gdb,...] - Starts debugger when error detected
    684: .  -on_error_emacs <machinename> causes emacsclient to jump to error file
    685: .  -on_error_abort calls abort() when error detected (no traceback)
    686: .  -on_error_mpiabort calls MPI_abort() when error detected
    687: .  -error_output_stderr prints error messages to stderr instead of the default stdout
    688: .  -error_output_none does not print the error messages (but handles errors in the same way as if this was not called)
    689: .  -debugger_nodes [node1,node2,...] - Indicates nodes to start in debugger
    690: .  -debugger_pause [sleeptime] (in seconds) - Pauses debugger
    691: .  -stop_for_debugger - Print message on how to attach debugger manually to
    692:                         process and wait (-debugger_pause) seconds for attachment
    693: .  -malloc - Indicates use of PETSc error-checking malloc (on by default for debug version of libraries)
    694: .  -malloc no - Indicates not to use error-checking malloc
    695: .  -malloc_debug - check for memory corruption at EVERY malloc or free
    696: .  -malloc_dump - prints a list of all unfreed memory at the end of the run
    697: .  -malloc_test - like -malloc_dump -malloc_debug, but only active for debugging builds
    698: .  -fp_trap - Stops on floating point exceptions (Note that on the
    699:               IBM RS6000 this slows code by at least a factor of 10.)
    700: .  -no_signal_handler - Indicates not to trap error signals
    701: .  -shared_tmp - indicates /tmp directory is shared by all processors
    702: .  -not_shared_tmp - each processor has own /tmp
    703: .  -tmp - alternative name of /tmp directory
    704: .  -get_total_flops - returns total flops done by all processors
    705: -  -memory_view - Print memory usage at end of run

    707:    Options Database Keys for Profiling:
    708:    See Users-Manual: Chapter 13 Profiling for details.
    709: +  -info <optional filename> - Prints verbose information to the screen
    710: .  -info_exclude <null,vec,mat,pc,ksp,snes,ts> - Excludes some of the verbose messages
    711: .  -log_sync - Enable barrier synchronization for all events. This option is useful to debug imbalance within each event,
    712:         however it slows things down and gives a distorted view of the overall runtime.
    713: .  -log_trace [filename] - Print traces of all PETSc calls to the screen (useful to determine where a program
    714:         hangs without running in the debugger).  See PetscLogTraceBegin().
    715: .  -log_view [:filename:format] - Prints summary of flop and timing information to screen or file, see PetscLogView().
    716: .  -log_summary [filename] - (Deprecated, use -log_view) Prints summary of flop and timing information to screen. If the filename is specified the
    717:         summary is written to the file.  See PetscLogView().
    718: .  -log_exclude: <vec,mat,pc,ksp,snes> - excludes subset of object classes from logging
    719: .  -log_all [filename] - Logs extensive profiling information  See PetscLogDump().
    720: .  -log [filename] - Logs basic profiline information  See PetscLogDump().
    721: .  -log_mpe [filename] - Creates a logfile viewable by the utility Jumpshot (in MPICH distribution)
    722: .  -viewfromoptions on,off - Enable or disable XXXSetFromOptions() calls, for applications with many small solves turn this off
    723: -  -check_pointer_intensity 0,1,2 - if pointers are checked for validity (debug version only), using 0 will result in faster code

    725:     Only one of -log_trace, -log_view, -log_view, -log_all, -log, or -log_mpe may be used at a time

    727:    Options Database Keys for SAWs:
    728: +  -saws_port <portnumber> - port number to publish SAWs data, default is 8080
    729: .  -saws_port_auto_select - have SAWs select a new unique port number where it publishes the data, the URL is printed to the screen
    730:                             this is useful when you are running many jobs that utilize SAWs at the same time
    731: .  -saws_log <filename> - save a log of all SAWs communication
    732: .  -saws_https <certificate file> - have SAWs use HTTPS instead of HTTP
    733: -  -saws_root <directory> - allow SAWs to have access to the given directory to search for requested resources and files

    735:    Environmental Variables:
    736: +   PETSC_TMP - alternative tmp directory
    737: .   PETSC_SHARED_TMP - tmp is shared by all processes
    738: .   PETSC_NOT_SHARED_TMP - each process has its own private tmp
    739: .   PETSC_VIEWER_SOCKET_PORT - socket number to use for socket viewer
    740: -   PETSC_VIEWER_SOCKET_MACHINE - machine to use for socket viewer to connect to

    743:    Level: beginner

    745:    Notes:
    746:    If for some reason you must call MPI_Init() separately, call
    747:    it before PetscInitialize().

    749:    Fortran Version:
    750:    In Fortran this routine has the format
    751: $       call PetscInitialize(file,ierr)

    753: +   ierr - error return code
    754: -  file - [optional] PETSc database file, also checks ~username/.petscrc and .petscrc use PETSC_NULL_CHARACTER to not check for
    755:           code specific file. Use -skip_petscrc in the code specific file to skip the .petscrc files

    757:    Important Fortran Note:
    758:    In Fortran, you MUST use PETSC_NULL_CHARACTER to indicate a
    759:    null character string; you CANNOT just use NULL as
    760:    in the C version. See Users-Manual: Chapter 11 PETSc for Fortran Users for details.

    762:    If your main program is C but you call Fortran code that also uses PETSc you need to call PetscInitializeFortran() soon after
    763:    calling PetscInitialize().

    765:    Concepts: initializing PETSc

    767: .seealso: PetscFinalize(), PetscInitializeFortran(), PetscGetArgs(), PetscInitializeNoArguments()

    769: @*/
    770: PetscErrorCode  PetscInitialize(int *argc,char ***args,const char file[],const char help[])
    771: {
    773:   PetscMPIInt    flag, size;
    774:   PetscBool      flg = PETSC_TRUE;
    775:   char           hostname[256];

    778:   if (PetscInitializeCalled) return(0);
    779:   /*
    780:       The checking over compatible runtime libraries is complicated by the MPI ABI initiative
    781:       https://wiki.mpich.org/mpich/index.php/ABI_Compatibility_Initiative which started with
    782:         MPICH v3.1 (Released Feburary 2014)
    783:         IBM MPI v2.1 (December 2014)
    784:         IntelÂ® MPI Library v5.0 (2014)
    785:         Cray MPT v7.0.0 (June 2014)
    786:       As of July 31, 2017 the ABI number still appears to be 12, that is all of the versions
    787:       listed above and since that time are compatible.

    789:       Unfortunately the MPI ABI initiative has not defined a way to determine the ABI number
    790:       at compile time or runtime. Thus we will need to systematically track the allowed versions
    791:       and how they are represented in the mpi.h and MPI_Get_library_version() output in order
    792:       to perform the checking.

    794:       Currently we only check for pre MPI ABI versions (and packages that do not follow the MPI ABI).

    796:       Questions:

    798:         Should the checks for ABI incompatibility be only on the major version number below?
    799:         Presumably the output to stderr will be removed before a release.
    800:   */

    802: #if defined(PETSC_HAVE_MPI_GET_LIBRARY_VERSION)
    803:   {
    804:     char        mpilibraryversion[MPI_MAX_LIBRARY_VERSION_STRING];
    805:     PetscMPIInt mpilibraryversionlength;
    806:     MPI_Get_library_version(mpilibraryversion,&mpilibraryversionlength);if (ierr) return ierr;
    807:     /* check for MPICH versions before MPI ABI initiative */
    808: #if defined(MPICH_VERSION)
    809: #if MPICH_NUMVERSION < 30100000
    810:     {
    811:       char *ver,*lf;
    812:       flg = PETSC_FALSE;
    813:       PetscStrstr(mpilibraryversion,"MPICH Version:",&ver);if (ierr) return ierr;
    814:       if (ver) {
    815:         PetscStrchr(ver,'\n',&lf);if (ierr) return ierr;
    816:         if (lf) {
    817:           *lf = 0;
    818:           PetscStrendswith(ver,MPICH_VERSION,&flg);if (ierr) return ierr;
    819:         }
    820:       }
    821:       if (!flg) {
    822:         fprintf(stderr,"PETSc Error --- MPICH library version \n%s does not match what PETSc was compiled with %s, aborting\n",mpilibraryversion,MPICH_VERSION);
    823:         return PETSC_ERR_MPI_LIB_INCOMP;
    824:       }
    825:     }
    826: #endif
    827:     /* check for OpenMPI version, it is not part of the MPI ABI initiative (is it part of another initiative that needs to be handled?) */
    828: #elif defined(OMPI_MAJOR_VERSION)
    829:     {
    830:       char *ver,bs[32],*bsf;
    831:       flg = PETSC_FALSE;
    832:       PetscStrstr(mpilibraryversion,"Open MPI",&ver);if (ierr) return ierr;
    833:       if (ver) {
    834:         PetscSNPrintf(bs,32,"v%d.%d",OMPI_MAJOR_VERSION,OMPI_MINOR_VERSION);
    835:         PetscStrstr(ver,bs,&bsf);if (ierr) return ierr;
    836:         if (bsf) flg = PETSC_TRUE;
    837:       }
    838:       if (!flg) {
    839:         fprintf(stderr,"PETSc Error --- Open MPI library version \n%s does not match what PETSc was compiled with %d.%d, aborting\n",mpilibraryversion,OMPI_MAJOR_VERSION,OMPI_MINOR_VERSION);
    840:         return PETSC_ERR_MPI_LIB_INCOMP;
    841:       }
    842:     }
    843: #endif
    844:   }
    845: #endif

    848:   /* these must be initialized in a routine, not as a constant declaration*/
    849:   PETSC_STDOUT = stdout;
    850:   PETSC_STDERR = stderr;

    852:   /* on Windows - set printf to default to printing 2 digit exponents */
    853: #if defined(PETSC_HAVE__SET_OUTPUT_FORMAT)
    854:   _set_output_format(_TWO_DIGIT_EXPONENT);
    855: #endif

    857:   PetscOptionsCreateDefault();

    859:   /*
    860:      We initialize the program name here (before MPI_Init()) because MPICH has a bug in
    861:      it that it sets args[0] on all processors to be args[0] on the first processor.
    862:   */
    863:   if (argc && *argc) {
    864:     PetscSetProgramName(**args);
    865:   } else {
    866:     PetscSetProgramName("Unknown Name");
    867:   }

    869:   MPI_Initialized(&flag);
    870:   if (!flag) {
    871:     if (PETSC_COMM_WORLD != MPI_COMM_NULL) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_SUP,"You cannot set PETSC_COMM_WORLD if you have not initialized MPI first");
    872: #if defined(PETSC_HAVE_MPI_INIT_THREAD)
    873:     {
    874:       PetscMPIInt provided;
    875:       MPI_Init_thread(argc,args,MPI_THREAD_FUNNELED,&provided);
    876:     }
    877: #else
    878:     MPI_Init(argc,args);
    879: #endif
    880:     PetscBeganMPI = PETSC_TRUE;
    881:   }
    882:   if (argc && args) {
    883:     PetscGlobalArgc = *argc;
    884:     PetscGlobalArgs = *args;
    885:   }
    886:   PetscFinalizeCalled = PETSC_FALSE;
    887:   PetscSpinlockCreate(&PetscViewerASCIISpinLockOpen);
    888:   PetscSpinlockCreate(&PetscViewerASCIISpinLockStdout);
    889:   PetscSpinlockCreate(&PetscViewerASCIISpinLockStderr);
    890:   PetscSpinlockCreate(&PetscCommSpinLock);

    892:   if (PETSC_COMM_WORLD == MPI_COMM_NULL) PETSC_COMM_WORLD = MPI_COMM_WORLD;
    893:   MPI_Comm_set_errhandler(PETSC_COMM_WORLD,MPI_ERRORS_RETURN);

    895:   MPI_Add_error_class(&PETSC_MPI_ERROR_CLASS);
    896:   MPI_Add_error_code(PETSC_MPI_ERROR_CLASS,&PETSC_MPI_ERROR_CODE);

    898:   /* Done after init due to a bug in MPICH-GM? */
    899:   PetscErrorPrintfInitialize();

    901:   MPI_Comm_rank(MPI_COMM_WORLD,&PetscGlobalRank);
    902:   MPI_Comm_size(MPI_COMM_WORLD,&PetscGlobalSize);

    904:   MPIU_BOOL = MPI_INT;
    905:   MPIU_ENUM = MPI_INT;

    907:   /*
    908:      Initialized the global complex variable; this is because with
    909:      shared libraries the constructors for global variables
    910:      are not called; at least on IRIX.
    911:   */
    912: #if defined(PETSC_HAVE_COMPLEX)
    913:   {
    914: #if defined(PETSC_CLANGUAGE_CXX) && !defined(PETSC_USE_REAL___FLOAT128)
    915:     PetscComplex ic(0.0,1.0);
    916:     PETSC_i = ic;
    917: #else
    918:     PETSC_i = _Complex_I;
    919: #endif
    920:   }

    922: #if !defined(PETSC_HAVE_MPI_C_DOUBLE_COMPLEX)
    923:   MPI_Type_contiguous(2,MPI_DOUBLE,&MPIU_C_DOUBLE_COMPLEX);
    924:   MPI_Type_commit(&MPIU_C_DOUBLE_COMPLEX);
    925:   MPI_Type_contiguous(2,MPI_FLOAT,&MPIU_C_COMPLEX);
    926:   MPI_Type_commit(&MPIU_C_COMPLEX);
    927: #endif
    928: #endif /* PETSC_HAVE_COMPLEX */

    930:   /*
    931:      Create the PETSc MPI reduction operator that sums of the first
    932:      half of the entries and maxes the second half.
    933:   */
    934:   MPI_Op_create(MPIU_MaxSum_Local,1,&MPIU_MAXSUM_OP);

    936: #if defined(PETSC_USE_REAL___FLOAT128)
    937:   MPI_Type_contiguous(2,MPI_DOUBLE,&MPIU___FLOAT128);
    938:   MPI_Type_commit(&MPIU___FLOAT128);
    939: #if defined(PETSC_HAVE_COMPLEX)
    940:   MPI_Type_contiguous(4,MPI_DOUBLE,&MPIU___COMPLEX128);
    941:   MPI_Type_commit(&MPIU___COMPLEX128);
    942: #endif
    943:   MPI_Op_create(PetscMax_Local,1,&MPIU_MAX);
    944:   MPI_Op_create(PetscMin_Local,1,&MPIU_MIN);
    945: #elif defined(PETSC_USE_REAL___FP16)
    946:   MPI_Type_contiguous(2,MPI_CHAR,&MPIU___FP16);
    947:   MPI_Type_commit(&MPIU___FP16);
    948:   MPI_Op_create(PetscMax_Local,1,&MPIU_MAX);
    949:   MPI_Op_create(PetscMin_Local,1,&MPIU_MIN);
    950: #endif

    952: #if (defined(PETSC_HAVE_COMPLEX) && !defined(PETSC_HAVE_MPI_C_DOUBLE_COMPLEX)) || defined(PETSC_USE_REAL___FLOAT128) || defined(PETSC_USE_REAL___FP16)
    953:   MPI_Op_create(PetscSum_Local,1,&MPIU_SUM);
    954: #endif

    956:   MPI_Type_contiguous(2,MPIU_SCALAR,&MPIU_2SCALAR);
    957:   MPI_Type_commit(&MPIU_2SCALAR);

    959: #if defined(PETSC_USE_64BIT_INDICES) || !defined(MPI_2INT)
    960:   MPI_Type_contiguous(2,MPIU_INT,&MPIU_2INT);
    961:   MPI_Type_commit(&MPIU_2INT);
    962: #endif

    965:   /*
    966:      Attributes to be set on PETSc communicators
    967:   */
    968:   MPI_Comm_create_keyval(MPI_COMM_NULL_COPY_FN,Petsc_DelCounter,&Petsc_Counter_keyval,(void*)0);
    969:   MPI_Comm_create_keyval(MPI_COMM_NULL_COPY_FN,Petsc_DelComm_Outer,&Petsc_InnerComm_keyval,(void*)0);
    970:   MPI_Comm_create_keyval(MPI_COMM_NULL_COPY_FN,Petsc_DelComm_Inner,&Petsc_OuterComm_keyval,(void*)0);
    971:   MPI_Comm_create_keyval(MPI_COMM_NULL_COPY_FN,Petsc_DelComm_Shm,&Petsc_ShmComm_keyval,(void*)0);

    973:   /*
    974:      Build the options database
    975:   */
    976:   PetscOptionsInsert(NULL,argc,args,file);

    978:   /* call a second time so it can look in the options database */
    979:   PetscErrorPrintfInitialize();

    981:   /*
    982:      Print main application help message
    983:   */
    984:   PetscOptionsHasHelp(NULL,&flg);
    985:   if (help && flg) {
    986:     PetscPrintf(PETSC_COMM_WORLD,help);
    987:   }
    988:   PetscOptionsCheckInitial_Private();

    990:   PetscCitationsInitialize();

    992: #if defined(PETSC_HAVE_SAWS)
    993:   PetscInitializeSAWs(help);
    994: #endif

    996:   /* Creates the logging data structures; this is enabled even if logging is not turned on */
    997: #if defined(PETSC_USE_LOG)
    998:   PetscLogInitialize();
    999: #endif

    1001:   /*
    1002:      Load the dynamic libraries (on machines that support them), this registers all
    1003:      the solvers etc. (On non-dynamic machines this initializes the PetscDraw and PetscViewer classes)
    1004:   */
    1005:   PetscInitialize_DynamicLibraries();

    1007:   MPI_Comm_size(PETSC_COMM_WORLD,&size);
    1008:   PetscInfo1(0,"PETSc successfully started: number of processors = %d\n",size);
    1009:   PetscGetHostName(hostname,256);
    1010:   PetscInfo1(0,"Running on machine: %s\n",hostname);

    1012:   PetscOptionsCheckInitial_Components();
    1013:   /* Check the options database for options related to the options database itself */
    1014:   PetscOptionsSetFromOptions(NULL);

    1016: #if defined(PETSC_USE_PETSC_MPI_EXTERNAL32)
    1017:   /*
    1018:       Tell MPI about our own data representation converter, this would/should be used if extern32 is not supported by the MPI

    1020:       Currently not used because it is not supported by MPICH.
    1021:   */
    1022: #if !defined(PETSC_WORDS_BIGENDIAN)
    1023:   MPI_Register_datarep((char*)"petsc",PetscDataRep_read_conv_fn,PetscDataRep_write_conv_fn,PetscDataRep_extent_fn,NULL);
    1024: #endif
    1025: #endif

    1027:   /*
    1028:       Setup building of stack frames for all function calls
    1029:   */
    1030: #if defined(PETSC_USE_DEBUG) && !defined(PETSC_HAVE_THREADSAFETY)
    1031:   PetscStackCreate();
    1032: #endif

    1034: #if defined(PETSC_SERIALIZE_FUNCTIONS)
    1035:   PetscFPTCreate(10000);
    1036: #endif

    1038: #if defined(PETSC_HAVE_HWLOC)
    1039:   {
    1040:     PetscViewer viewer;
    1041:     PetscOptionsGetViewer(PETSC_COMM_WORLD,NULL,"-process_view",&viewer,NULL,&flg);
    1042:     if (flg) {
    1043:       PetscProcessPlacementView(viewer);
    1044:       PetscViewerDestroy(&viewer);
    1045:     }
    1046:   }
    1047: #endif

    1049:   flg = PETSC_TRUE;
    1050:   PetscOptionsGetBool(NULL,NULL,"-viewfromoptions",&flg,NULL);
    1051:   if (!flg) {PetscOptionsPushGetViewerOff(PETSC_TRUE); }

    1053: #if defined(PETSC_HAVE_ADIOS)
    1054:   adios_init_noxml(PETSC_COMM_WORLD);
    1055:   adios_declare_group(&Petsc_adios_group,"PETSc","",adios_stat_default);
    1056:   adios_select_method(Petsc_adios_group,"MPI","","");
    1057:   adios_read_init_method(ADIOS_READ_METHOD_BP,PETSC_COMM_WORLD,"");
    1058: #endif
    1059: #if defined(PETSC_HAVE_ADIOS2)
    1060: #endif

    1062:   /*
    1063:       Once we are completedly initialized then we can set this variables
    1064:   */
    1065:   PetscInitializeCalled = PETSC_TRUE;

    1067:   PetscOptionsHasName(NULL,NULL,"-python",&flg);
    1068:   if (flg) {PetscPythonInitialize(NULL,NULL);}
    1069:   return(0);
    1070: }

    1072: #if defined(PETSC_USE_LOG)
    1073: PETSC_INTERN PetscObject *PetscObjects;
    1074: PETSC_INTERN PetscInt    PetscObjectsCounts;
    1075: PETSC_INTERN PetscInt    PetscObjectsMaxCounts;
    1076: PETSC_INTERN PetscBool   PetscObjectsLog;
    1077: #endif

    1079: /*
    1080:     Frees all the MPI types and operations that PETSc may have created
    1081: */
    1082: PetscErrorCode  PetscFreeMPIResources(void)
    1083: {

    1087: #if defined(PETSC_USE_REAL___FLOAT128)
    1088:   MPI_Type_free(&MPIU___FLOAT128);
    1089: #if defined(PETSC_HAVE_COMPLEX)
    1090:   MPI_Type_free(&MPIU___COMPLEX128);
    1091: #endif
    1092:   MPI_Op_free(&MPIU_MAX);
    1093:   MPI_Op_free(&MPIU_MIN);
    1094: #elif defined(PETSC_USE_REAL___FP16)
    1095:   MPI_Type_free(&MPIU___FP16);
    1096:   MPI_Op_free(&MPIU_MAX);
    1097:   MPI_Op_free(&MPIU_MIN);
    1098: #endif

    1100: #if defined(PETSC_HAVE_COMPLEX)
    1101: #if !defined(PETSC_HAVE_MPI_C_DOUBLE_COMPLEX)
    1102:   MPI_Type_free(&MPIU_C_DOUBLE_COMPLEX);
    1103:   MPI_Type_free(&MPIU_C_COMPLEX);
    1104: #endif
    1105: #endif

    1107: #if (defined(PETSC_HAVE_COMPLEX) && !defined(PETSC_HAVE_MPI_C_DOUBLE_COMPLEX)) || defined(PETSC_USE_REAL___FLOAT128) || defined(PETSC_USE_REAL___FP16)
    1108:   MPI_Op_free(&MPIU_SUM);
    1109: #endif

    1111:   MPI_Type_free(&MPIU_2SCALAR);
    1112: #if defined(PETSC_USE_64BIT_INDICES) || !defined(MPI_2INT)
    1113:   MPI_Type_free(&MPIU_2INT);
    1114: #endif
    1115:   MPI_Op_free(&MPIU_MAXSUM_OP);
    1116:   return(0);
    1117: }

    1119: /*@C
    1120:    PetscFinalize - Checks for options to be called at the conclusion
    1121:    of the program. MPI_Finalize() is called only if the user had not
    1122:    called MPI_Init() before calling PetscInitialize().

    1124:    Collective on PETSC_COMM_WORLD

    1126:    Options Database Keys:
    1127: +  -options_view - Calls PetscOptionsView()
    1128: .  -options_left - Prints unused options that remain in the database
    1129: .  -objects_dump [all] - Prints list of objects allocated by the user that have not been freed, the option all cause all outstanding objects to be listed
    1130: .  -mpidump - Calls PetscMPIDump()
    1131: .  -malloc_dump - Calls PetscMallocDump()
    1132: .  -malloc_info - Prints total memory usage
    1133: -  -malloc_log - Prints summary of memory usage

    1135:    Level: beginner

    1137:    Note:
    1138:    See PetscInitialize() for more general runtime options.

    1140: .seealso: PetscInitialize(), PetscOptionsView(), PetscMallocDump(), PetscMPIDump(), PetscEnd()
    1141: @*/
    1142: PetscErrorCode  PetscFinalize(void)
    1143: {
    1145:   PetscMPIInt    rank;
    1146:   PetscInt       nopt;
    1147:   PetscBool      flg1 = PETSC_FALSE,flg2 = PETSC_FALSE,flg3 = PETSC_FALSE;
    1148:   PetscBool      flg;
    1149: #if defined(PETSC_USE_LOG)
    1150:   char           mname[PETSC_MAX_PATH_LEN];
    1151: #endif

    1153:   if (!PetscInitializeCalled) {
    1154:     printf("PetscInitialize() must be called before PetscFinalize()\n");
    1155:     return(PETSC_ERR_ARG_WRONGSTATE);
    1156:   }
    1158:   PetscInfo(NULL,"PetscFinalize() called\n");

    1160:   MPI_Comm_rank(PETSC_COMM_WORLD,&rank);
    1161: #if defined(PETSC_HAVE_ADIOS)
    1162:   adios_read_finalize_method(ADIOS_READ_METHOD_BP_AGGREGATE);
    1163:   adios_finalize(rank);
    1164: #endif
    1165: #if defined(PETSC_HAVE_ADIOS2)
    1166: #endif
    1167:   PetscOptionsHasName(NULL,NULL,"-citations",&flg);
    1168:   if (flg) {
    1169:     char  *cits, filename[PETSC_MAX_PATH_LEN];
    1170:     FILE  *fd = PETSC_STDOUT;

    1172:     PetscOptionsGetString(NULL,NULL,"-citations",filename,PETSC_MAX_PATH_LEN,NULL);
    1173:     if (filename[0]) {
    1174:       PetscFOpen(PETSC_COMM_WORLD,filename,"w",&fd);
    1175:     }
    1176:     PetscSegBufferGet(PetscCitationsList,1,&cits);
    1177:     cits[0] = 0;
    1178:     PetscSegBufferExtractAlloc(PetscCitationsList,&cits);
    1179:     PetscFPrintf(PETSC_COMM_WORLD,fd,"If you publish results based on this computation please cite the following:\n");
    1180:     PetscFPrintf(PETSC_COMM_WORLD,fd,"===========================================================================\n");
    1181:     PetscFPrintf(PETSC_COMM_WORLD,fd,"%s",cits);
    1182:     PetscFPrintf(PETSC_COMM_WORLD,fd,"===========================================================================\n");
    1183:     PetscFClose(PETSC_COMM_WORLD,fd);
    1184:     PetscFree(cits);
    1185:   }
    1186:   PetscSegBufferDestroy(&PetscCitationsList);

    1188: #if defined(PETSC_HAVE_SSL) && defined(PETSC_USE_SOCKET_VIEWER)
    1189:   /* TextBelt is run for testing purposes only, please do not use this feature often */
    1190:   {
    1191:     PetscInt nmax = 2;
    1192:     char     **buffs;
    1193:     PetscMalloc1(2,&buffs);
    1194:     PetscOptionsGetStringArray(NULL,NULL,"-textbelt",buffs,&nmax,&flg1);
    1195:     if (flg1) {
    1196:       if (!nmax) SETERRQ(PETSC_COMM_WORLD,PETSC_ERR_USER,"-textbelt requires either the phone number or number,\"message\"");
    1197:       if (nmax == 1) {
    1198:         PetscMalloc1(128,&buffs[1]);
    1199:         PetscGetProgramName(buffs[1],32);
    1200:         PetscStrcat(buffs[1]," has completed");
    1201:       }
    1202:       PetscTextBelt(PETSC_COMM_WORLD,buffs[0],buffs[1],NULL);
    1203:       PetscFree(buffs[0]);
    1204:       PetscFree(buffs[1]);
    1205:     }
    1206:     PetscFree(buffs);
    1207:   }
    1208:   {
    1209:     PetscInt nmax = 2;
    1210:     char     **buffs;
    1211:     PetscMalloc1(2,&buffs);
    1212:     PetscOptionsGetStringArray(NULL,NULL,"-tellmycell",buffs,&nmax,&flg1);
    1213:     if (flg1) {
    1214:       if (!nmax) SETERRQ(PETSC_COMM_WORLD,PETSC_ERR_USER,"-tellmycell requires either the phone number or number,\"message\"");
    1215:       if (nmax == 1) {
    1216:         PetscMalloc1(128,&buffs[1]);
    1217:         PetscGetProgramName(buffs[1],32);
    1218:         PetscStrcat(buffs[1]," has completed");
    1219:       }
    1220:       PetscTellMyCell(PETSC_COMM_WORLD,buffs[0],buffs[1],NULL);
    1221:       PetscFree(buffs[0]);
    1222:       PetscFree(buffs[1]);
    1223:     }
    1224:     PetscFree(buffs);
    1225:   }
    1226: #endif
    1227:   /*
    1228:     It should be safe to cancel the options monitors, since we don't expect to be setting options
    1229:     here (at least that are worth monitoring).  Monitors ought to be released so that they release
    1230:     whatever memory was allocated there before -malloc_dump reports unfreed memory.
    1231:   */
    1232:   PetscOptionsMonitorCancel();

    1234: #if defined(PETSC_SERIALIZE_FUNCTIONS)
    1235:   PetscFPTDestroy();
    1236: #endif

    1239: #if defined(PETSC_HAVE_SAWS)
    1240:   flg = PETSC_FALSE;
    1241:   PetscOptionsGetBool(NULL,NULL,"-saw_options",&flg,NULL);
    1242:   if (flg) {
    1243:     PetscOptionsSAWsDestroy();
    1244:   }
    1245: #endif

    1247: #if defined(PETSC_HAVE_X)
    1248:   flg1 = PETSC_FALSE;
    1249:   PetscOptionsGetBool(NULL,NULL,"-x_virtual",&flg1,NULL);
    1250:   if (flg1) {
    1251:     /*  this is a crude hack, but better than nothing */
    1252:     PetscPOpen(PETSC_COMM_WORLD,NULL,"pkill -9 Xvfb","r",NULL);
    1253:   }
    1254: #endif

    1256: #if !defined(PETSC_HAVE_THREADSAFETY)
    1257:   PetscOptionsGetBool(NULL,NULL,"-malloc_info",&flg2,NULL);
    1258:   if (!flg2) {
    1259:     flg2 = PETSC_FALSE;
    1260:     PetscOptionsGetBool(NULL,NULL,"-memory_view",&flg2,NULL);
    1261:   }
    1262:   if (flg2) {
    1263:     PetscMemoryView(PETSC_VIEWER_STDOUT_WORLD,"Summary of Memory Usage in PETSc\n");
    1264:   }
    1265: #endif

    1267: #if defined(PETSC_USE_LOG)
    1268:   flg1 = PETSC_FALSE;
    1269:   PetscOptionsGetBool(NULL,NULL,"-get_total_flops",&flg1,NULL);
    1270:   if (flg1) {
    1271:     PetscLogDouble flops = 0;
    1272:     MPI_Reduce(&petsc_TotalFlops,&flops,1,MPI_DOUBLE,MPI_SUM,0,PETSC_COMM_WORLD);
    1273:     PetscPrintf(PETSC_COMM_WORLD,"Total flops over all processors %g\n",flops);
    1274:   }
    1275: #endif

    1278: #if defined(PETSC_USE_LOG)
    1279: #if defined(PETSC_HAVE_MPE)
    1280:   mname[0] = 0;
    1281:   PetscOptionsGetString(NULL,NULL,"-log_mpe",mname,PETSC_MAX_PATH_LEN,&flg1);
    1282:   if (flg1) {
    1283:     if (mname[0]) {PetscLogMPEDump(mname);}
    1284:     else          {PetscLogMPEDump(0);}
    1285:   }
    1286: #endif
    1287: #endif

    1289:   /*
    1290:      Free all objects registered with PetscObjectRegisterDestroy() such as PETSC_VIEWER_XXX_().
    1291:   */
    1292:   PetscObjectRegisterDestroyAll();

    1294: #if defined(PETSC_USE_LOG)
    1295:   PetscOptionsPushGetViewerOff(PETSC_FALSE);
    1296:   PetscLogViewFromOptions();
    1297:   PetscOptionsPopGetViewerOff();

    1299:   mname[0] = 0;
    1300:   PetscOptionsGetString(NULL,NULL,"-log_summary",mname,PETSC_MAX_PATH_LEN,&flg1);
    1301:   if (flg1) {
    1302:     PetscViewer viewer;
    1303:     (*PetscHelpPrintf)(PETSC_COMM_WORLD,"\n\n WARNING:   -log_summary is being deprecated; switch to -log_view\n\n\n");
    1304:     if (mname[0]) {
    1305:       PetscViewerASCIIOpen(PETSC_COMM_WORLD,mname,&viewer);
    1306:       PetscLogView(viewer);
    1307:       PetscViewerDestroy(&viewer);
    1308:     } else {
    1309:       viewer = PETSC_VIEWER_STDOUT_WORLD;
    1310:       PetscViewerPushFormat(viewer,PETSC_VIEWER_DEFAULT);
    1311:       PetscLogView(viewer);
    1312:       PetscViewerPopFormat(viewer);
    1313:     }
    1314:   }

    1316:   /*
    1317:      Free any objects created by the last block of code.
    1318:   */
    1319:   PetscObjectRegisterDestroyAll();

    1321:   mname[0] = 0;
    1322:   PetscOptionsGetString(NULL,NULL,"-log_all",mname,PETSC_MAX_PATH_LEN,&flg1);
    1323:   PetscOptionsGetString(NULL,NULL,"-log",mname,PETSC_MAX_PATH_LEN,&flg2);
    1324:   if (flg1 || flg2) {PetscLogDump(mname);}
    1325: #endif

    1327:   PetscStackDestroy();

    1329:   flg1 = PETSC_FALSE;
    1330:   PetscOptionsGetBool(NULL,NULL,"-no_signal_handler",&flg1,NULL);
    1331:   if (!flg1) { PetscPopSignalHandler();}
    1332:   flg1 = PETSC_FALSE;
    1333:   PetscOptionsGetBool(NULL,NULL,"-mpidump",&flg1,NULL);
    1334:   if (flg1) {
    1335:     PetscMPIDump(stdout);
    1336:   }
    1337:   flg1 = PETSC_FALSE;
    1338:   flg2 = PETSC_FALSE;
    1339:   /* preemptive call to avoid listing this option in options table as unused */
    1340:   PetscOptionsHasName(NULL,NULL,"-malloc_dump",&flg1);
    1341:   PetscOptionsHasName(NULL,NULL,"-objects_dump",&flg1);
    1342:   PetscOptionsGetBool(NULL,NULL,"-options_view",&flg2,NULL);

    1344:   if (flg2) {
    1345:     PetscViewer viewer;
    1346:     PetscViewerCreate(PETSC_COMM_WORLD,&viewer);
    1347:     PetscViewerSetType(viewer,PETSCVIEWERASCII);
    1348:     PetscOptionsView(NULL,viewer);
    1349:     PetscViewerDestroy(&viewer);
    1350:   }

    1352:   /* to prevent PETSc -options_left from warning */
    1353:   PetscOptionsHasName(NULL,NULL,"-nox",&flg1);
    1354:   PetscOptionsHasName(NULL,NULL,"-nox_warning",&flg1);

    1356:   flg3 = PETSC_FALSE; /* default value is required */
    1357:   PetscOptionsGetBool(NULL,NULL,"-options_left",&flg3,&flg1);
    1358:   PetscOptionsAllUsed(NULL,&nopt);
    1359:   if (flg3) {
    1360:     if (!flg2) { /* have not yet printed the options */
    1361:       PetscViewer viewer;
    1362:       PetscViewerCreate(PETSC_COMM_WORLD,&viewer);
    1363:       PetscViewerSetType(viewer,PETSCVIEWERASCII);
    1364:       PetscOptionsView(NULL,viewer);
    1365:       PetscViewerDestroy(&viewer);
    1366:     }
    1367:     if (!nopt) {
    1368:       PetscPrintf(PETSC_COMM_WORLD,"There are no unused options.\n");
    1369:     } else if (nopt == 1) {
    1370:       PetscPrintf(PETSC_COMM_WORLD,"There is one unused database option. It is:\n");
    1371:     } else {
    1372:       PetscPrintf(PETSC_COMM_WORLD,"There are %D unused database options. They are:\n",nopt);
    1373:     }
    1374:   }
    1375: #if defined(PETSC_USE_DEBUG)
    1376:   if (nopt && !flg3 && !flg1) {
    1377:     PetscPrintf(PETSC_COMM_WORLD,"WARNING! There are options you set that were not used!\n");
    1378:     PetscPrintf(PETSC_COMM_WORLD,"WARNING! could be spelling mistake, etc!\n");
    1379:     PetscOptionsLeft(NULL);
    1380:   } else if (nopt && flg3) {
    1381: #else
    1382:   if (nopt && flg3) {
    1383: #endif
    1384:     PetscOptionsLeft(NULL);
    1385:   }

    1387: #if defined(PETSC_HAVE_SAWS)
    1388:   if (!PetscGlobalRank) {
    1389:     PetscStackSAWsViewOff();
    1390:     PetscStackCallSAWs(SAWs_Finalize,());
    1391:   }
    1392: #endif

    1394: #if defined(PETSC_USE_LOG)
    1395:   /*
    1396:        List all objects the user may have forgot to free
    1397:   */
    1398:   if (PetscObjectsLog) {
    1399:     PetscOptionsHasName(NULL,NULL,"-objects_dump",&flg1);
    1400:     if (flg1) {
    1401:       MPI_Comm local_comm;
    1402:       char     string[64];

    1404:       PetscOptionsGetString(NULL,NULL,"-objects_dump",string,64,NULL);
    1405:       MPI_Comm_dup(MPI_COMM_WORLD,&local_comm);
    1406:       PetscSequentialPhaseBegin_Private(local_comm,1);
    1407:       PetscObjectsDump(stdout,(string[0] == 'a') ? PETSC_TRUE : PETSC_FALSE);
    1408:       PetscSequentialPhaseEnd_Private(local_comm,1);
    1409:       MPI_Comm_free(&local_comm);
    1410:     }
    1411:   }
    1412: #endif

    1414: #if defined(PETSC_USE_LOG)
    1415:   PetscObjectsCounts    = 0;
    1416:   PetscObjectsMaxCounts = 0;
    1417:   PetscFree(PetscObjects);
    1418: #endif

    1420:   /*
    1421:      Destroy any packages that registered a finalize
    1422:   */
    1423:   PetscRegisterFinalizeAll();

    1425: #if defined(PETSC_USE_LOG)
    1426:   PetscLogFinalize();
    1427: #endif

    1429:   /*
    1430:      Print PetscFunctionLists that have not been properly freed

    1432:   PetscFunctionListPrintAll();
    1433:   */

    1435:   if (petsc_history) {
    1436:     PetscCloseHistoryFile(&petsc_history);
    1437:     petsc_history = 0;
    1438:   }
    1439:   PetscOptionsHelpPrintedDestroy(&PetscOptionsHelpPrintedSingleton);

    1441:   PetscInfoAllow(PETSC_FALSE,NULL);

    1443: #if !defined(PETSC_HAVE_THREADSAFETY)
    1444:   {
    1445:     char fname[PETSC_MAX_PATH_LEN];
    1446:     FILE *fd;
    1447:     int  err;

    1449:     fname[0] = 0;

    1451:     PetscOptionsGetString(NULL,NULL,"-malloc_dump",fname,250,&flg1);
    1452:     flg2 = PETSC_FALSE;
    1453:     PetscOptionsGetBool(NULL,NULL,"-malloc_test",&flg2,NULL);
    1454: #if defined(PETSC_USE_DEBUG)
    1455:     if (PETSC_RUNNING_ON_VALGRIND) flg2 = PETSC_FALSE;
    1456: #else
    1457:     flg2 = PETSC_FALSE;         /* Skip reporting for optimized builds regardless of -malloc_test */
    1458: #endif
    1459:     if (flg1 && fname[0]) {
    1460:       char sname[PETSC_MAX_PATH_LEN];

    1462:       PetscSNPrintf(sname,PETSC_MAX_PATH_LEN,"%s_%d",fname,rank);
    1463:       fd   = fopen(sname,"w"); if (!fd) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_FILE_OPEN,"Cannot open log file: %s",sname);
    1464:       PetscMallocDump(fd);
    1465:       err  = fclose(fd);
    1466:       if (err) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_SYS,"fclose() failed on file");
    1467:     } else if (flg1 || flg2) {
    1468:       MPI_Comm local_comm;

    1470:       MPI_Comm_dup(MPI_COMM_WORLD,&local_comm);
    1471:       PetscSequentialPhaseBegin_Private(local_comm,1);
    1472:       PetscMallocDump(stdout);
    1473:       PetscSequentialPhaseEnd_Private(local_comm,1);
    1474:       MPI_Comm_free(&local_comm);
    1475:     }
    1476:   }

    1478:   {
    1479:     char fname[PETSC_MAX_PATH_LEN];
    1480:     FILE *fd = NULL;

    1482:     fname[0] = 0;

    1484:     PetscOptionsGetString(NULL,NULL,"-malloc_log",fname,250,&flg1);
    1485:     PetscOptionsHasName(NULL,NULL,"-malloc_log_threshold",&flg2);
    1486:     if (flg1 && fname[0]) {
    1487:       int err;

    1489:       if (!rank) {
    1490:         fd = fopen(fname,"w");
    1491:         if (!fd) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_FILE_OPEN,"Cannot open log file: %s",fname);
    1492:       }
    1493:       PetscMallocDumpLog(fd);
    1494:       if (fd) {
    1495:         err = fclose(fd);
    1496:         if (err) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_SYS,"fclose() failed on file");
    1497:       }
    1498:     } else if (flg1 || flg2) {
    1499:       PetscMallocDumpLog(stdout);
    1500:     }
    1501:   }
    1502: #endif

    1504:   /*
    1505:      Close any open dynamic libraries
    1506:   */
    1507:   PetscFinalize_DynamicLibraries();

    1509:   /* Can be destroyed only after all the options are used */
    1510:   PetscOptionsDestroyDefault();

    1512:   PetscGlobalArgc = 0;
    1513:   PetscGlobalArgs = 0;

    1515:   PetscFreeMPIResources();

    1517:   /*
    1518:      Destroy any known inner MPI_Comm's and attributes pointing to them
    1519:      Note this will not destroy any new communicators the user has created.

    1521:      If all PETSc objects were not destroyed those left over objects will have hanging references to
    1522:      the MPI_Comms that were freed; but that is ok because those PETSc objects will never be used again
    1523:  */
    1524:   {
    1525:     PetscCommCounter *counter;
    1526:     PetscMPIInt      flg;
    1527:     MPI_Comm         icomm;
    1528:     union {MPI_Comm comm; void *ptr;} ucomm;
    1529:     MPI_Comm_get_attr(PETSC_COMM_SELF,Petsc_InnerComm_keyval,&ucomm,&flg);
    1530:     if (flg) {
    1531:       icomm = ucomm.comm;
    1532:       MPI_Comm_get_attr(icomm,Petsc_Counter_keyval,&counter,&flg);
    1533:       if (!flg) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_CORRUPT,"Inner MPI_Comm does not have expected tag/name counter, problem with corrupted memory");

    1535:       MPI_Comm_delete_attr(PETSC_COMM_SELF,Petsc_InnerComm_keyval);
    1536:       MPI_Comm_delete_attr(icomm,Petsc_Counter_keyval);
    1537:       MPI_Comm_free(&icomm);
    1538:     }
    1539:     MPI_Comm_get_attr(PETSC_COMM_WORLD,Petsc_InnerComm_keyval,&ucomm,&flg);
    1540:     if (flg) {
    1541:       icomm = ucomm.comm;
    1542:       MPI_Comm_get_attr(icomm,Petsc_Counter_keyval,&counter,&flg);
    1543:       if (!flg) SETERRQ(PETSC_COMM_WORLD,PETSC_ERR_ARG_CORRUPT,"Inner MPI_Comm does not have expected tag/name counter, problem with corrupted memory");

    1545:       MPI_Comm_delete_attr(PETSC_COMM_WORLD,Petsc_InnerComm_keyval);
    1546:       MPI_Comm_delete_attr(icomm,Petsc_Counter_keyval);
    1547:       MPI_Comm_free(&icomm);
    1548:     }
    1549:   }

    1551:   MPI_Comm_free_keyval(&Petsc_Counter_keyval);
    1552:   MPI_Comm_free_keyval(&Petsc_InnerComm_keyval);
    1553:   MPI_Comm_free_keyval(&Petsc_OuterComm_keyval);
    1554:   MPI_Comm_free_keyval(&Petsc_ShmComm_keyval);

    1556:   PetscSpinlockDestroy(&PetscViewerASCIISpinLockOpen);
    1557:   PetscSpinlockDestroy(&PetscViewerASCIISpinLockStdout);
    1558:   PetscSpinlockDestroy(&PetscViewerASCIISpinLockStderr);
    1559:   PetscSpinlockDestroy(&PetscCommSpinLock);

    1561:   if (PetscBeganMPI) {
    1562: #if defined(PETSC_HAVE_MPI_FINALIZED)
    1563:     PetscMPIInt flag;
    1564:     MPI_Finalized(&flag);
    1565:     if (flag) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_LIB,"MPI_Finalize() has already been called, even though MPI_Init() was called by PetscInitialize()");
    1566: #endif
    1567:     MPI_Finalize();
    1568:   }
    1569: /*

    1571:      Note: In certain cases PETSC_COMM_WORLD is never MPI_Comm_free()ed because
    1572:    the communicator has some outstanding requests on it. Specifically if the
    1573:    flag PETSC_HAVE_BROKEN_REQUEST_FREE is set (for IBM MPI implementation). See
    1574:    src/vec/utils/vpscat.c. Due to this the memory allocated in PetscCommDuplicate()
    1575:    is never freed as it should be. Thus one may obtain messages of the form
    1576:    [ 1] 8 bytes PetscCommDuplicate() line 645 in src/sys/mpiu.c indicating the
    1577:    memory was not freed.

    1579: */
    1580:   PetscMallocClear();

    1582:   PetscInitializeCalled = PETSC_FALSE;
    1583:   PetscFinalizeCalled   = PETSC_TRUE;
    1584:   return(0);
    1585: }

    1587: #if defined(PETSC_MISSING_LAPACK_lsame_)
    1588: PETSC_EXTERN int lsame_(char *a,char *b)
    1589: {
    1590:   if (*a == *b) return 1;
    1591:   if (*a + 32 == *b) return 1;
    1592:   if (*a - 32 == *b) return 1;
    1593:   return 0;
    1594: }
    1595: #endif

    1597: #if defined(PETSC_MISSING_LAPACK_lsame)
    1598: PETSC_EXTERN int lsame(char *a,char *b)
    1599: {
    1600:   if (*a == *b) return 1;
    1601:   if (*a + 32 == *b) return 1;
    1602:   if (*a - 32 == *b) return 1;
    1603:   return 0;
    1604: }
    1605: #endif