Date: 2013-07-02T14:40:06+00:00

Actual source code: pdvec.c
petsc-3.4.2 2013-07-02

      2: /*
      3:      Code for some of the parallel vector primatives.
      4: */
      5: #include <../src/vec/vec/impls/mpi/pvecimpl.h>   /*I  "petscvec.h"   I*/
      6: #include <petscviewerhdf5.h>

     10: PetscErrorCode VecDestroy_MPI(Vec v)
     11: {
     12:   Vec_MPI        *x = (Vec_MPI*)v->data;

     16: #if defined(PETSC_USE_LOG)
     17:   PetscLogObjectState((PetscObject)v,"Length=%D",v->map->N);
     18: #endif
     19:   if (!x) return(0);
     20:   PetscFree(x->array_allocated);

     22:   /* Destroy local representation of vector if it exists */
     23:   if (x->localrep) {
     24:     VecDestroy(&x->localrep);
     25:     VecScatterDestroy(&x->localupdate);
     26:   }
     27:   /* Destroy the stashes: note the order - so that the tags are freed properly */
     28:   VecStashDestroy_Private(&v->bstash);
     29:   VecStashDestroy_Private(&v->stash);
     30:   PetscFree(v->data);
     31:   return(0);
     32: }

     36: PetscErrorCode VecView_MPI_ASCII(Vec xin,PetscViewer viewer)
     37: {
     38:   PetscErrorCode    ierr;
     39:   PetscInt          i,work = xin->map->n,cnt,len,nLen;
     40:   PetscMPIInt       j,n = 0,size,rank,tag = ((PetscObject)viewer)->tag;
     41:   MPI_Status        status;
     42:   PetscScalar       *values;
     43:   const PetscScalar *xarray;
     44:   const char        *name;
     45:   PetscViewerFormat format;

     48:   VecGetArrayRead(xin,&xarray);
     49:   /* determine maximum message to arrive */
     50:   MPI_Comm_rank(PetscObjectComm((PetscObject)xin),&rank);
     51:   MPI_Reduce(&work,&len,1,MPIU_INT,MPI_MAX,0,PetscObjectComm((PetscObject)xin));
     52:   MPI_Comm_size(PetscObjectComm((PetscObject)xin),&size);

     54:   if (!rank) {
     55:     PetscMalloc(len*sizeof(PetscScalar),&values);
     56:     PetscViewerGetFormat(viewer,&format);
     57:     /*
     58:         MATLAB format and ASCII format are very similar except
     59:         MATLAB uses %18.16e format while ASCII uses %g
     60:     */
     61:     if (format == PETSC_VIEWER_ASCII_MATLAB) {
     62:       PetscObjectGetName((PetscObject)xin,&name);
     63:       PetscViewerASCIIPrintf(viewer,"%s = [\n",name);
     64:       for (i=0; i<xin->map->n; i++) {
     65: #if defined(PETSC_USE_COMPLEX)
     66:         if (PetscImaginaryPart(xarray[i]) > 0.0) {
     67:           PetscViewerASCIIPrintf(viewer,"%18.16e + %18.16ei\n",PetscRealPart(xarray[i]),PetscImaginaryPart(xarray[i]));
     68:         } else if (PetscImaginaryPart(xarray[i]) < 0.0) {
     69:           PetscViewerASCIIPrintf(viewer,"%18.16e - %18.16ei\n",PetscRealPart(xarray[i]),-PetscImaginaryPart(xarray[i]));
     70:         } else {
     71:           PetscViewerASCIIPrintf(viewer,"%18.16e\n",PetscRealPart(xarray[i]));
     72:         }
     73: #else
     74:         PetscViewerASCIIPrintf(viewer,"%18.16e\n",(double)xarray[i]);
     75: #endif
     76:       }
     77:       /* receive and print messages */
     78:       for (j=1; j<size; j++) {
     79:         MPI_Recv(values,(PetscMPIInt)len,MPIU_SCALAR,j,tag,PetscObjectComm((PetscObject)xin),&status);
     80:         MPI_Get_count(&status,MPIU_SCALAR,&n);
     81:         for (i=0; i<n; i++) {
     82: #if defined(PETSC_USE_COMPLEX)
     83:           if (PetscImaginaryPart(values[i]) > 0.0) {
     84:             PetscViewerASCIIPrintf(viewer,"%18.16e + %18.16e i\n",PetscRealPart(values[i]),PetscImaginaryPart(values[i]));
     85:           } else if (PetscImaginaryPart(values[i]) < 0.0) {
     86:             PetscViewerASCIIPrintf(viewer,"%18.16e - %18.16e i\n",PetscRealPart(values[i]),-PetscImaginaryPart(values[i]));
     87:           } else {
     88:             PetscViewerASCIIPrintf(viewer,"%18.16e\n",PetscRealPart(values[i]));
     89:           }
     90: #else
     91:           PetscViewerASCIIPrintf(viewer,"%18.16e\n",values[i]);
     92: #endif
     93:         }
     94:       }
     95:       PetscViewerASCIIPrintf(viewer,"];\n");

     97:     } else if (format == PETSC_VIEWER_ASCII_SYMMODU) {
     98:       for (i=0; i<xin->map->n; i++) {
     99: #if defined(PETSC_USE_COMPLEX)
    100:         PetscViewerASCIIPrintf(viewer,"%18.16e %18.16e\n",PetscRealPart(xarray[i]),PetscImaginaryPart(xarray[i]));
    101: #else
    102:         PetscViewerASCIIPrintf(viewer,"%18.16e\n",xarray[i]);
    103: #endif
    104:       }
    105:       /* receive and print messages */
    106:       for (j=1; j<size; j++) {
    107:         MPI_Recv(values,(PetscMPIInt)len,MPIU_SCALAR,j,tag,PetscObjectComm((PetscObject)xin),&status);
    108:         MPI_Get_count(&status,MPIU_SCALAR,&n);
    109:         for (i=0; i<n; i++) {
    110: #if defined(PETSC_USE_COMPLEX)
    111:           PetscViewerASCIIPrintf(viewer,"%18.16e %18.16e\n",PetscRealPart(values[i]),PetscImaginaryPart(values[i]));
    112: #else
    113:           PetscViewerASCIIPrintf(viewer,"%18.16e\n",values[i]);
    114: #endif
    115:         }
    116:       }
    117:     } else if (format == PETSC_VIEWER_ASCII_VTK || format == PETSC_VIEWER_ASCII_VTK_CELL) {
    118:       /*
    119:         state 0: No header has been output
    120:         state 1: Only POINT_DATA has been output
    121:         state 2: Only CELL_DATA has been output
    122:         state 3: Output both, POINT_DATA last
    123:         state 4: Output both, CELL_DATA last
    124:       */
    125:       static PetscInt stateId     = -1;
    126:       int             outputState = 0;
    127:       int             doOutput    = 0;
    128:       PetscBool       hasState;
    129:       PetscInt        bs, b;

    131:       if (stateId < 0) {
    132:         PetscObjectComposedDataRegister(&stateId);
    133:       }
    134:       PetscObjectComposedDataGetInt((PetscObject) viewer, stateId, outputState, hasState);
    135:       if (!hasState) outputState = 0;

    137:       PetscObjectGetName((PetscObject) xin, &name);
    138:       VecGetLocalSize(xin, &nLen);
    139:       PetscMPIIntCast(nLen,&n);
    140:       VecGetBlockSize(xin, &bs);
    141:       if (format == PETSC_VIEWER_ASCII_VTK) {
    142:         if (outputState == 0) {
    143:           outputState = 1;
    144:           doOutput    = 1;
    145:         } else if (outputState == 1) doOutput = 0;
    146:         else if (outputState == 2) {
    147:           outputState = 3;
    148:           doOutput    = 1;
    149:         } else if (outputState == 3) doOutput = 0;
    150:         else if (outputState == 4) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_WRONGSTATE, "Tried to output POINT_DATA again after intervening CELL_DATA");

    152:         if (doOutput) {
    153:           PetscViewerASCIIPrintf(viewer, "POINT_DATA %d\n", xin->map->N/bs);
    154:         }
    155:       } else {
    156:         if (outputState == 0) {
    157:           outputState = 2;
    158:           doOutput    = 1;
    159:         } else if (outputState == 1) {
    160:           outputState = 4;
    161:           doOutput    = 1;
    162:         } else if (outputState == 2) doOutput = 0;
    163:         else if (outputState == 3) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_WRONGSTATE, "Tried to output CELL_DATA again after intervening POINT_DATA");
    164:         else if (outputState == 4) doOutput = 0;

    166:         if (doOutput) {
    167:           PetscViewerASCIIPrintf(viewer, "CELL_DATA %d\n", xin->map->N/bs);
    168:         }
    169:       }
    170:       PetscObjectComposedDataSetInt((PetscObject) viewer, stateId, outputState);
    171:       if (name) {
    172:         if (bs == 3) {
    173:           PetscViewerASCIIPrintf(viewer, "VECTORS %s double\n", name);
    174:         } else {
    175:           PetscViewerASCIIPrintf(viewer, "SCALARS %s double %d\n", name, bs);
    176:         }
    177:       } else {
    178:         PetscViewerASCIIPrintf(viewer, "SCALARS scalars double %d\n", bs);
    179:       }
    180:       if (bs != 3) {
    181:         PetscViewerASCIIPrintf(viewer, "LOOKUP_TABLE default\n");
    182:       }
    183:       for (i=0; i<n/bs; i++) {
    184:         for (b=0; b<bs; b++) {
    185:           if (b > 0) {
    186:             PetscViewerASCIIPrintf(viewer," ");
    187:           }
    188:           PetscViewerASCIIPrintf(viewer,"%g",PetscRealPart(xarray[i*bs+b]));
    189:         }
    190:         PetscViewerASCIIPrintf(viewer,"\n");
    191:       }
    192:       for (j=1; j<size; j++) {
    193:         MPI_Recv(values,(PetscMPIInt)len,MPIU_SCALAR,j,tag,PetscObjectComm((PetscObject)xin),&status);
    194:         MPI_Get_count(&status,MPIU_SCALAR,&n);
    195:         for (i=0; i<n/bs; i++) {
    196:           for (b=0; b<bs; b++) {
    197:             if (b > 0) {
    198:               PetscViewerASCIIPrintf(viewer," ");
    199:             }
    200:             PetscViewerASCIIPrintf(viewer,"%g",PetscRealPart(values[i*bs+b]));
    201:           }
    202:           PetscViewerASCIIPrintf(viewer,"\n");
    203:         }
    204:       }
    205:     } else if (format == PETSC_VIEWER_ASCII_VTK_COORDS) {
    206:       PetscInt bs, b;

    208:       VecGetLocalSize(xin, &nLen);
    209:       PetscMPIIntCast(nLen,&n);
    210:       VecGetBlockSize(xin, &bs);
    211:       if ((bs < 1) || (bs > 3)) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_ARG_WRONGSTATE, "VTK can only handle 3D objects, but vector dimension is %d", bs);

    213:       for (i=0; i<n/bs; i++) {
    214:         for (b=0; b<bs; b++) {
    215:           if (b > 0) {
    216:             PetscViewerASCIIPrintf(viewer," ");
    217:           }
    218:           PetscViewerASCIIPrintf(viewer,"%g",PetscRealPart(xarray[i*bs+b]));
    219:         }
    220:         for (b=bs; b<3; b++) {
    221:           PetscViewerASCIIPrintf(viewer," 0.0");
    222:         }
    223:         PetscViewerASCIIPrintf(viewer,"\n");
    224:       }
    225:       for (j=1; j<size; j++) {
    226:         MPI_Recv(values,(PetscMPIInt)len,MPIU_SCALAR,j,tag,PetscObjectComm((PetscObject)xin),&status);
    227:         MPI_Get_count(&status,MPIU_SCALAR,&n);
    228:         for (i=0; i<n/bs; i++) {
    229:           for (b=0; b<bs; b++) {
    230:             if (b > 0) {
    231:               PetscViewerASCIIPrintf(viewer," ");
    232:             }
    233:             PetscViewerASCIIPrintf(viewer,"%g",PetscRealPart(values[i*bs+b]));
    234:           }
    235:           for (b=bs; b<3; b++) {
    236:             PetscViewerASCIIPrintf(viewer," 0.0");
    237:           }
    238:           PetscViewerASCIIPrintf(viewer,"\n");
    239:         }
    240:       }
    241:     } else if (format == PETSC_VIEWER_ASCII_PCICE) {
    242:       PetscInt bs, b, vertexCount = 1;

    244:       VecGetLocalSize(xin, &nLen);
    245:       PetscMPIIntCast(nLen,&n);
    246:       VecGetBlockSize(xin, &bs);
    247:       if ((bs < 1) || (bs > 3)) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_ARG_WRONGSTATE, "PCICE can only handle up to 3D objects, but vector dimension is %d", bs);

    249:       PetscViewerASCIIPrintf(viewer,"%D\n", xin->map->N/bs);
    250:       for (i=0; i<n/bs; i++) {
    251:         PetscViewerASCIIPrintf(viewer,"%7D   ", vertexCount++);
    252:         for (b=0; b<bs; b++) {
    253:           if (b > 0) {
    254:             PetscViewerASCIIPrintf(viewer," ");
    255:           }
    256: #if !defined(PETSC_USE_COMPLEX)
    257:           PetscViewerASCIIPrintf(viewer,"% 12.5E",xarray[i*bs+b]);
    258: #endif
    259:         }
    260:         PetscViewerASCIIPrintf(viewer,"\n");
    261:       }
    262:       for (j=1; j<size; j++) {
    263:         MPI_Recv(values,(PetscMPIInt)len,MPIU_SCALAR,j,tag,PetscObjectComm((PetscObject)xin),&status);
    264:         MPI_Get_count(&status,MPIU_SCALAR,&n);
    265:         for (i=0; i<n/bs; i++) {
    266:           PetscViewerASCIIPrintf(viewer,"%7D   ", vertexCount++);
    267:           for (b=0; b<bs; b++) {
    268:             if (b > 0) {
    269:               PetscViewerASCIIPrintf(viewer," ");
    270:             }
    271: #if !defined(PETSC_USE_COMPLEX)
    272:             PetscViewerASCIIPrintf(viewer,"% 12.5E",values[i*bs+b]);
    273: #endif
    274:           }
    275:           PetscViewerASCIIPrintf(viewer,"\n");
    276:         }
    277:       }
    278:     } else {
    279:       PetscObjectPrintClassNamePrefixType((PetscObject)xin,viewer,"Vector Object");
    280:       if (format != PETSC_VIEWER_ASCII_COMMON) {PetscViewerASCIIPrintf(viewer,"Process [%d]\n",rank);}
    281:       cnt = 0;
    282:       for (i=0; i<xin->map->n; i++) {
    283:         if (format == PETSC_VIEWER_ASCII_INDEX) {
    284:           PetscViewerASCIIPrintf(viewer,"%D: ",cnt++);
    285:         }
    286: #if defined(PETSC_USE_COMPLEX)
    287:         if (PetscImaginaryPart(xarray[i]) > 0.0) {
    288:           PetscViewerASCIIPrintf(viewer,"%g + %g i\n",PetscRealPart(xarray[i]),PetscImaginaryPart(xarray[i]));
    289:         } else if (PetscImaginaryPart(xarray[i]) < 0.0) {
    290:           PetscViewerASCIIPrintf(viewer,"%g - %g i\n",PetscRealPart(xarray[i]),-PetscImaginaryPart(xarray[i]));
    291:         } else {
    292:           PetscViewerASCIIPrintf(viewer,"%g\n",PetscRealPart(xarray[i]));
    293:         }
    294: #else
    295:         PetscViewerASCIIPrintf(viewer,"%g\n",(double)xarray[i]);
    296: #endif
    297:       }
    298:       /* receive and print messages */
    299:       for (j=1; j<size; j++) {
    300:         MPI_Recv(values,(PetscMPIInt)len,MPIU_SCALAR,j,tag,PetscObjectComm((PetscObject)xin),&status);
    301:         MPI_Get_count(&status,MPIU_SCALAR,&n);
    302:         if (format != PETSC_VIEWER_ASCII_COMMON) {
    303:           PetscViewerASCIIPrintf(viewer,"Process [%d]\n",j);
    304:         }
    305:         for (i=0; i<n; i++) {
    306:           if (format == PETSC_VIEWER_ASCII_INDEX) {
    307:             PetscViewerASCIIPrintf(viewer,"%D: ",cnt++);
    308:           }
    309: #if defined(PETSC_USE_COMPLEX)
    310:           if (PetscImaginaryPart(values[i]) > 0.0) {
    311:             PetscViewerASCIIPrintf(viewer,"%g + %g i\n",PetscRealPart(values[i]),PetscImaginaryPart(values[i]));
    312:           } else if (PetscImaginaryPart(values[i]) < 0.0) {
    313:             PetscViewerASCIIPrintf(viewer,"%g - %g i\n",PetscRealPart(values[i]),-PetscImaginaryPart(values[i]));
    314:           } else {
    315:             PetscViewerASCIIPrintf(viewer,"%g\n",PetscRealPart(values[i]));
    316:           }
    317: #else
    318:           PetscViewerASCIIPrintf(viewer,"%g\n",(double)values[i]);
    319: #endif
    320:         }
    321:       }
    322:     }
    323:     PetscFree(values);
    324:   } else {
    325:     PetscViewerGetFormat(viewer,&format);
    326:     if (format == PETSC_VIEWER_ASCII_MATLAB) {
    327:       /* this may be a collective operation so make sure everyone calls it */
    328:       PetscObjectGetName((PetscObject)xin,&name);
    329:     }
    330:     /* send values */
    331:     MPI_Send((void*)xarray,xin->map->n,MPIU_SCALAR,0,tag,PetscObjectComm((PetscObject)xin));
    332:   }
    333:   PetscViewerFlush(viewer);
    334:   VecRestoreArrayRead(xin,&xarray);
    335:   return(0);
    336: }

    340: PetscErrorCode VecView_MPI_Binary(Vec xin,PetscViewer viewer)
    341: {
    342:   PetscErrorCode    ierr;
    343:   PetscMPIInt       rank,size,mesgsize,tag = ((PetscObject)viewer)->tag, mesglen;
    344:   PetscInt          len,n = xin->map->n,j,tr[2];
    345:   int               fdes;
    346:   MPI_Status        status;
    347:   PetscScalar       *values;
    348:   const PetscScalar *xarray;
    349:   FILE              *file;
    350: #if defined(PETSC_HAVE_MPIIO)
    351:   PetscBool         isMPIIO;
    352: #endif
    353:   PetscBool         skipHeader;
    354:   PetscInt          message_count,flowcontrolcount;
    355:   PetscViewerFormat format;

    358:   VecGetArrayRead(xin,&xarray);
    359:   PetscViewerBinaryGetDescriptor(viewer,&fdes);
    360:   PetscViewerBinaryGetSkipHeader(viewer,&skipHeader);

    362:   /* determine maximum message to arrive */
    363:   MPI_Comm_rank(PetscObjectComm((PetscObject)xin),&rank);
    364:   MPI_Comm_size(PetscObjectComm((PetscObject)xin),&size);

    366:   if (!skipHeader) {
    367:     tr[0] = VEC_FILE_CLASSID;
    368:     tr[1] = xin->map->N;
    369:     PetscViewerBinaryWrite(viewer,tr,2,PETSC_INT,PETSC_FALSE);
    370:   }

    372: #if defined(PETSC_HAVE_MPIIO)
    373:   PetscViewerBinaryGetMPIIO(viewer,&isMPIIO);
    374:   if (!isMPIIO) {
    375: #endif
    376:     PetscViewerFlowControlStart(viewer,&message_count,&flowcontrolcount);
    377:     if (!rank) {
    378:       PetscBinaryWrite(fdes,(void*)xarray,xin->map->n,PETSC_SCALAR,PETSC_FALSE);

    380:       len = 0;
    381:       for (j=1; j<size; j++) len = PetscMax(len,xin->map->range[j+1]-xin->map->range[j]);
    382:       PetscMalloc(len*sizeof(PetscScalar),&values);
    383:       PetscMPIIntCast(len,&mesgsize);
    384:       /* receive and save messages */
    385:       for (j=1; j<size; j++) {
    386:         PetscViewerFlowControlStepMaster(viewer,j,&message_count,flowcontrolcount);
    387:         MPI_Recv(values,mesgsize,MPIU_SCALAR,j,tag,PetscObjectComm((PetscObject)xin),&status);
    388:         MPI_Get_count(&status,MPIU_SCALAR,&mesglen);
    389:         n    = (PetscInt)mesglen;
    390:         PetscBinaryWrite(fdes,values,n,PETSC_SCALAR,PETSC_TRUE);
    391:       }
    392:       PetscViewerFlowControlEndMaster(viewer,&message_count);
    393:       PetscFree(values);
    394:     } else {
    395:       PetscViewerFlowControlStepWorker(viewer,rank,&message_count);
    396:       PetscMPIIntCast(xin->map->n,&mesgsize);
    397:       MPI_Send((void*)xarray,mesgsize,MPIU_SCALAR,0,tag,PetscObjectComm((PetscObject)xin));
    398:       PetscViewerFlowControlEndWorker(viewer,&message_count);
    399:     }
    400:     PetscViewerGetFormat(viewer,&format);
    401:     if (format == PETSC_VIEWER_BINARY_MATLAB) {
    402:       MPI_Comm   comm;
    403:       FILE       *info;
    404:       const char *name;

    406:       PetscObjectGetName((PetscObject)xin,&name);
    407:       PetscObjectGetComm((PetscObject)viewer,&comm);
    408:       PetscViewerBinaryGetInfoPointer(viewer,&info);
    409:       PetscFPrintf(comm,info,"%%--- begin code written by PetscViewerBinary for MATLAB format ---%\n");
    410:       PetscFPrintf(comm,info,"%%$$ Set.%s = PetscBinaryRead(fd);\n",name);
    411:       PetscFPrintf(comm,info,"%%--- end code written by PetscViewerBinary for MATLAB format ---%\n\n");
    412:     }
    413: #if defined(PETSC_HAVE_MPIIO)
    414:   } else {
    415:     MPI_Offset   off;
    416:     MPI_File     mfdes;
    417:     PetscMPIInt  lsize;

    419:     PetscMPIIntCast(n,&lsize);
    420:     PetscViewerBinaryGetMPIIODescriptor(viewer,&mfdes);
    421:     PetscViewerBinaryGetMPIIOOffset(viewer,&off);
    422:     off += xin->map->rstart*sizeof(PetscScalar); /* off is MPI_Offset, not PetscMPIInt */
    423:     MPI_File_set_view(mfdes,off,MPIU_SCALAR,MPIU_SCALAR,(char*)"native",MPI_INFO_NULL);
    424:     MPIU_File_write_all(mfdes,(void*)xarray,lsize,MPIU_SCALAR,MPI_STATUS_IGNORE);
    425:     PetscViewerBinaryAddMPIIOOffset(viewer,xin->map->N*sizeof(PetscScalar));
    426:   }
    427: #endif

    429:   VecRestoreArrayRead(xin,&xarray);
    430:   if (!rank) {
    431:     PetscViewerBinaryGetInfoPointer(viewer,&file);
    432:     if (file) {
    433:       if (((PetscObject)xin)->prefix) {
    434:         PetscFPrintf(PETSC_COMM_SELF,file,"-%svecload_block_size %D\n",((PetscObject)xin)->prefix,xin->map->bs);
    435:       } else {
    436:         PetscFPrintf(PETSC_COMM_SELF,file,"-vecload_block_size %D\n",xin->map->bs);
    437:       }
    438:     }
    439:   }
    440:   return(0);
    441: }

    443: #include <petscdraw.h>
    446: PetscErrorCode VecView_MPI_Draw_LG(Vec xin,PetscViewer viewer)
    447: {
    448:   PetscDraw      draw;
    449:   PetscBool      isnull;

    452: #if defined(PETSC_USE_64BIT_INDICES)
    454:   PetscViewerDrawGetDraw(viewer,0,&draw);
    455:   PetscDrawIsNull(draw,&isnull);
    456:   if (isnull) return(0);
    457:   SETERRQ(PETSC_COMM_SELF,PETSC_ERR_SUP,"Not supported with 64 bit integers");
    458: #else
    459:   PetscMPIInt       size,rank;
    460:   int               i,N = xin->map->N,*lens;
    461:   PetscReal         *xx,*yy;
    462:   PetscDrawLG       lg;
    463:   const PetscScalar *xarray;

    466:   PetscViewerDrawGetDraw(viewer,0,&draw);
    467:   PetscDrawIsNull(draw,&isnull);
    468:   if (isnull) return(0);

    470:   VecGetArrayRead(xin,&xarray);
    471:   PetscViewerDrawGetDrawLG(viewer,0,&lg);
    472:   PetscDrawCheckResizedWindow(draw);
    473:   MPI_Comm_rank(PetscObjectComm((PetscObject)xin),&rank);
    474:   MPI_Comm_size(PetscObjectComm((PetscObject)xin),&size);
    475:   if (!rank) {
    476:     PetscDrawLGReset(lg);
    477:     PetscMalloc(2*(N+1)*sizeof(PetscReal),&xx);
    478:     for (i=0; i<N; i++) xx[i] = (PetscReal) i;
    479:     yy   = xx + N;
    480:     PetscMalloc(size*sizeof(PetscInt),&lens);
    481:     for (i=0; i<size; i++) lens[i] = xin->map->range[i+1] - xin->map->range[i];
    482:
    483: #if !defined(PETSC_USE_COMPLEX)
    484:     MPI_Gatherv((void*)xarray,xin->map->n,MPIU_REAL,yy,lens,xin->map->range,MPIU_REAL,0,PetscObjectComm((PetscObject)xin));
    485: #else
    486:     {
    487:       PetscReal *xr;
    488:       PetscMalloc((xin->map->n+1)*sizeof(PetscReal),&xr);
    489:       for (i=0; i<xin->map->n; i++) xr[i] = PetscRealPart(xarray[i]);

    491:       MPI_Gatherv(xr,xin->map->n,MPIU_REAL,yy,lens,xin->map->range,MPIU_REAL,0,PetscObjectComm((PetscObject)xin));
    492:       PetscFree(xr);
    493:     }
    494: #endif
    495:     PetscFree(lens);
    496:     PetscDrawLGAddPoints(lg,N,&xx,&yy);
    497:     PetscFree(xx);
    498:   } else {
    499: #if !defined(PETSC_USE_COMPLEX)
    500:     MPI_Gatherv((void*)xarray,xin->map->n,MPIU_REAL,0,0,0,MPIU_REAL,0,PetscObjectComm((PetscObject)xin));
    501: #else
    502:     {
    503:       PetscReal *xr;
    504:       PetscMalloc((xin->map->n+1)*sizeof(PetscReal),&xr);
    505:       for (i=0; i<xin->map->n; i++) xr[i] = PetscRealPart(xarray[i]);

    507:       MPI_Gatherv(xr,xin->map->n,MPIU_REAL,0,0,0,MPIU_REAL,0,PetscObjectComm((PetscObject)xin));
    508:       PetscFree(xr);
    509:     }
    510: #endif
    511:   }
    512:   PetscDrawLGDraw(lg);
    513:   PetscDrawSynchronizedFlush(draw);
    514:   VecRestoreArrayRead(xin,&xarray);
    515: #endif
    516:   return(0);
    517: }

    521: PetscErrorCode  VecView_MPI_Draw(Vec xin,PetscViewer viewer)
    522: {
    523:   PetscErrorCode    ierr;
    524:   PetscMPIInt       rank,size,tag = ((PetscObject)viewer)->tag;
    525:   PetscInt          i,start,end;
    526:   MPI_Status        status;
    527:   PetscReal         coors[4],ymin,ymax,xmin,xmax,tmp;
    528:   PetscDraw         draw;
    529:   PetscBool         isnull;
    530:   PetscDrawAxis     axis;
    531:   const PetscScalar *xarray;

    534:   PetscViewerDrawGetDraw(viewer,0,&draw);
    535:   PetscDrawIsNull(draw,&isnull); if (isnull) return(0);

    537:   VecGetArrayRead(xin,&xarray);
    538:   PetscDrawCheckResizedWindow(draw);
    539:   xmin = 1.e20; xmax = -1.e20;
    540:   for (i=0; i<xin->map->n; i++) {
    541: #if defined(PETSC_USE_COMPLEX)
    542:     if (PetscRealPart(xarray[i]) < xmin) xmin = PetscRealPart(xarray[i]);
    543:     if (PetscRealPart(xarray[i]) > xmax) xmax = PetscRealPart(xarray[i]);
    544: #else
    545:     if (xarray[i] < xmin) xmin = xarray[i];
    546:     if (xarray[i] > xmax) xmax = xarray[i];
    547: #endif
    548:   }
    549:   if (xmin + 1.e-10 > xmax) {
    550:     xmin -= 1.e-5;
    551:     xmax += 1.e-5;
    552:   }
    553:   MPI_Reduce(&xmin,&ymin,1,MPIU_REAL,MPIU_MIN,0,PetscObjectComm((PetscObject)xin));
    554:   MPI_Reduce(&xmax,&ymax,1,MPIU_REAL,MPIU_MAX,0,PetscObjectComm((PetscObject)xin));
    555:   MPI_Comm_size(PetscObjectComm((PetscObject)xin),&size);
    556:   MPI_Comm_rank(PetscObjectComm((PetscObject)xin),&rank);
    557:   PetscDrawAxisCreate(draw,&axis);
    558:   PetscLogObjectParent(draw,axis);
    559:   if (!rank) {
    560:     PetscDrawClear(draw);
    561:     PetscDrawFlush(draw);
    562:     PetscDrawAxisSetLimits(axis,0.0,(double)xin->map->N,ymin,ymax);
    563:     PetscDrawAxisDraw(axis);
    564:     PetscDrawGetCoordinates(draw,coors,coors+1,coors+2,coors+3);
    565:   }
    566:   PetscDrawAxisDestroy(&axis);
    567:   MPI_Bcast(coors,4,MPIU_REAL,0,PetscObjectComm((PetscObject)xin));
    568:   if (rank) {PetscDrawSetCoordinates(draw,coors[0],coors[1],coors[2],coors[3]);}
    569:   /* draw local part of vector */
    570:   VecGetOwnershipRange(xin,&start,&end);
    571:   if (rank < size-1) { /*send value to right */
    572:     MPI_Send((void*)&xarray[xin->map->n-1],1,MPIU_REAL,rank+1,tag,PetscObjectComm((PetscObject)xin));
    573:   }
    574:   for (i=1; i<xin->map->n; i++) {
    575: #if !defined(PETSC_USE_COMPLEX)
    576:     PetscDrawLine(draw,(PetscReal)(i-1+start),xarray[i-1],(PetscReal)(i+start),xarray[i],PETSC_DRAW_RED);
    577: #else
    578:     PetscDrawLine(draw,(PetscReal)(i-1+start),PetscRealPart(xarray[i-1]),(PetscReal)(i+start),PetscRealPart(xarray[i]),PETSC_DRAW_RED);
    579: #endif
    580:   }
    581:   if (rank) { /* receive value from right */
    582:     MPI_Recv(&tmp,1,MPIU_REAL,rank-1,tag,PetscObjectComm((PetscObject)xin),&status);
    583: #if !defined(PETSC_USE_COMPLEX)
    584:     PetscDrawLine(draw,(PetscReal)start-1,tmp,(PetscReal)start,xarray[0],PETSC_DRAW_RED);
    585: #else
    586:     PetscDrawLine(draw,(PetscReal)start-1,tmp,(PetscReal)start,PetscRealPart(xarray[0]),PETSC_DRAW_RED);
    587: #endif
    588:   }
    589:   PetscDrawSynchronizedFlush(draw);
    590:   PetscDrawPause(draw);
    591:   VecRestoreArrayRead(xin,&xarray);
    592:   return(0);
    593: }

    595: #if defined(PETSC_HAVE_MATLAB_ENGINE)
    598: PetscErrorCode VecView_MPI_Matlab(Vec xin,PetscViewer viewer)
    599: {
    600:   PetscErrorCode    ierr;
    601:   PetscMPIInt       rank,size,*lens;
    602:   PetscInt          i,N = xin->map->N;
    603:   const PetscScalar *xarray;
    604:   PetscScalar       *xx;

    607:   VecGetArrayRead(xin,&xarray);
    608:   MPI_Comm_rank(PetscObjectComm((PetscObject)xin),&rank);
    609:   MPI_Comm_size(PetscObjectComm((PetscObject)xin),&size);
    610:   if (!rank) {
    611:     PetscMalloc(N*sizeof(PetscScalar),&xx);
    612:     PetscMalloc(size*sizeof(PetscMPIInt),&lens);
    613:     for (i=0; i<size; i++) lens[i] = xin->map->range[i+1] - xin->map->range[i];

    615:     MPI_Gatherv((void*)xarray,xin->map->n,MPIU_SCALAR,xx,lens,xin->map->range,MPIU_SCALAR,0,PetscObjectComm((PetscObject)xin));
    616:     PetscFree(lens);

    618:     PetscObjectName((PetscObject)xin);
    619:     PetscViewerMatlabPutArray(viewer,N,1,xx,((PetscObject)xin)->name);

    621:     PetscFree(xx);
    622:   } else {
    623:     MPI_Gatherv((void*)xarray,xin->map->n,MPIU_SCALAR,0,0,0,MPIU_SCALAR,0,PetscObjectComm((PetscObject)xin));
    624:   }
    625:   VecRestoreArrayRead(xin,&xarray);
    626:   return(0);
    627: }
    628: #endif

    630: #if defined(PETSC_HAVE_HDF5)
    633: PetscErrorCode VecView_MPI_HDF5(Vec xin, PetscViewer viewer)
    634: {
    635:   /* TODO: It looks like we can remove the H5Sclose(filespace) and H5Dget_space(dset_id). Why do we do this? */
    636:   hid_t             filespace; /* file dataspace identifier */
    637:   hid_t             chunkspace; /* chunk dataset property identifier */
    638:   hid_t             plist_id;  /* property list identifier */
    639:   hid_t             dset_id;   /* dataset identifier */
    640:   hid_t             memspace;  /* memory dataspace identifier */
    641:   hid_t             file_id;
    642:   hid_t             group;
    643:   hid_t             scalartype; /* scalar type (H5T_NATIVE_FLOAT or H5T_NATIVE_DOUBLE) */
    644:   herr_t            status;
    645:   PetscInt          bs = xin->map->bs > 0 ? xin->map->bs : 1;
    646:   hsize_t           dim;
    647:   hsize_t           maxDims[4], dims[4], chunkDims[4], count[4],offset[4];
    648:   PetscInt          timestep;
    649:   PetscInt          low;
    650:   const PetscScalar *x;
    651:   const char        *vecname;
    652:   PetscErrorCode    ierr;

    655:   PetscViewerHDF5OpenGroup(viewer, &file_id, &group);
    656:   PetscViewerHDF5GetTimestep(viewer, &timestep);

    658:   /* Create the dataspace for the dataset.
    659:    *
    660:    * dims - holds the current dimensions of the dataset
    661:    *
    662:    * maxDims - holds the maximum dimensions of the dataset (unlimited
    663:    * for the number of time steps with the current dimensions for the
    664:    * other dimensions; so only additional time steps can be added).
    665:    *
    666:    * chunkDims - holds the size of a single time step (required to
    667:    * permit extending dataset).
    668:    */
    669:   dim = 0;
    670:   if (timestep >= 0) {
    671:     dims[dim]      = timestep+1;
    672:     maxDims[dim]   = H5S_UNLIMITED;
    673:     chunkDims[dim] = 1;
    674:     ++dim;
    675:   }
    676:   PetscHDF5IntCast(xin->map->N/bs,dims + dim);

    678:   maxDims[dim]   = dims[dim];
    679:   chunkDims[dim] = dims[dim];
    680:   ++dim;
    681:   if (bs >= 1) {
    682:     dims[dim]      = bs;
    683:     maxDims[dim]   = dims[dim];
    684:     chunkDims[dim] = dims[dim];
    685:     ++dim;
    686:   }
    687: #if defined(PETSC_USE_COMPLEX)
    688:   dims[dim]      = 2;
    689:   maxDims[dim]   = dims[dim];
    690:   chunkDims[dim] = dims[dim];
    691:   ++dim;
    692: #endif
    693:   filespace = H5Screate_simple(dim, dims, maxDims);
    694:   if (filespace == -1) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_LIB,"Cannot H5Screate_simple()");

    696: #if defined(PETSC_USE_REAL_SINGLE)
    697:   scalartype = H5T_NATIVE_FLOAT;
    698: #elif defined(PETSC_USE_REAL___FLOAT128)
    699: #error "HDF5 output with 128 bit floats not supported."
    700: #else
    701:   scalartype = H5T_NATIVE_DOUBLE;
    702: #endif

    704:   /* Create the dataset with default properties and close filespace */
    705:   PetscObjectGetName((PetscObject) xin, &vecname);
    706:   if (!H5Lexists(group, vecname, H5P_DEFAULT)) {
    707:     /* Create chunk */
    708:     chunkspace = H5Pcreate(H5P_DATASET_CREATE);
    709:     if (chunkspace == -1) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_LIB,"Cannot H5Pcreate()");
    710:     status = H5Pset_chunk(chunkspace, dim, chunkDims);CHKERRQ(status);

    712: #if (H5_VERS_MAJOR * 10000 + H5_VERS_MINOR * 100 + H5_VERS_RELEASE >= 10800)
    713:     dset_id = H5Dcreate2(group, vecname, scalartype, filespace, H5P_DEFAULT, chunkspace, H5P_DEFAULT);
    714: #else
    715:     dset_id = H5Dcreate(group, vecname, scalartype, filespace, H5P_DEFAULT);
    716: #endif
    717:     if (dset_id == -1) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_LIB,"Cannot H5Dcreate2()");
    718:     status = H5Pclose(chunkspace);CHKERRQ(status);
    719:   } else {
    720:     dset_id = H5Dopen2(group, vecname, H5P_DEFAULT);
    721:     status  = H5Dset_extent(dset_id, dims);CHKERRQ(status);
    722:   }
    723:   status = H5Sclose(filespace);CHKERRQ(status);

    725:   /* Each process defines a dataset and writes it to the hyperslab in the file */
    726:   dim = 0;
    727:   if (timestep >= 0) {
    728:     count[dim] = 1;
    729:     ++dim;
    730:   }
    731:   PetscHDF5IntCast(xin->map->n/bs,count + dim);
    732:   ++dim;
    733:   if (bs >= 1) {
    734:     count[dim] = bs;
    735:     ++dim;
    736:   }
    737: #if defined(PETSC_USE_COMPLEX)
    738:   count[dim] = 2;
    739:   ++dim;
    740: #endif
    741:   if (xin->map->n > 0) {
    742:     memspace = H5Screate_simple(dim, count, NULL);
    743:     if (memspace == -1) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_LIB,"Cannot H5Screate_simple()");
    744:   } else {
    745:     /* Can't create dataspace with zero for any dimension, so create null dataspace. */
    746:     memspace = H5Screate(H5S_NULL);
    747:     if (memspace == -1) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_LIB,"Cannot H5Screate()");
    748:   }

    750:   /* Select hyperslab in the file */
    751:   VecGetOwnershipRange(xin, &low, NULL);
    752:   dim  = 0;
    753:   if (timestep >= 0) {
    754:     offset[dim] = timestep;
    755:     ++dim;
    756:   }
    757:   PetscHDF5IntCast(low/bs,offset + dim);
    758:   ++dim;
    759:   if (bs >= 1) {
    760:     offset[dim] = 0;
    761:     ++dim;
    762:   }
    763: #if defined(PETSC_USE_COMPLEX)
    764:   offset[dim] = 0;
    765:   ++dim;
    766: #endif
    767:   if (xin->map->n > 0) {
    768:     filespace = H5Dget_space(dset_id);
    769:     if (filespace == -1) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_LIB,"Cannot H5Dget_space()");
    770:     status = H5Sselect_hyperslab(filespace, H5S_SELECT_SET, offset, NULL, count, NULL);CHKERRQ(status);
    771:   } else {
    772:     /* Create null filespace to match null memspace. */
    773:     filespace = H5Screate(H5S_NULL);
    774:     if (filespace == -1) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_LIB,"Cannot H5Screate(H5S_NULL)");
    775:   }

    777:   /* Create property list for collective dataset write */
    778:   plist_id = H5Pcreate(H5P_DATASET_XFER);
    779:   if (plist_id == -1) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_LIB,"Cannot H5Pcreate()");
    780: #if defined(PETSC_HAVE_H5PSET_FAPL_MPIO)
    781:   status = H5Pset_dxpl_mpio(plist_id, H5FD_MPIO_COLLECTIVE);CHKERRQ(status);
    782: #endif
    783:   /* To write dataset independently use H5Pset_dxpl_mpio(plist_id, H5FD_MPIO_INDEPENDENT) */

    785:   VecGetArrayRead(xin, &x);
    786:   status = H5Dwrite(dset_id, scalartype, memspace, filespace, plist_id, x);CHKERRQ(status);
    787:   status = H5Fflush(file_id, H5F_SCOPE_GLOBAL);CHKERRQ(status);
    788:   VecRestoreArrayRead(xin, &x);

    790:   /* Close/release resources */
    791:   if (group != file_id) {
    792:     status = H5Gclose(group);CHKERRQ(status);
    793:   }
    794:   status = H5Pclose(plist_id);CHKERRQ(status);
    795:   status = H5Sclose(filespace);CHKERRQ(status);
    796:   status = H5Sclose(memspace);CHKERRQ(status);
    797:   status = H5Dclose(dset_id);CHKERRQ(status);
    798:   PetscInfo1(xin,"Wrote Vec object with name %s\n",vecname);
    799:   return(0);
    800: }
    801: #endif

    805: PetscErrorCode VecView_MPI(Vec xin,PetscViewer viewer)
    806: {
    808:   PetscBool      iascii,isbinary,isdraw;
    809: #if defined(PETSC_HAVE_MATHEMATICA)
    810:   PetscBool      ismathematica;
    811: #endif
    812: #if defined(PETSC_HAVE_HDF5)
    813:   PetscBool      ishdf5;
    814: #endif
    815: #if defined(PETSC_HAVE_MATLAB_ENGINE) && !defined(PETSC_USE_COMPLEX) && !defined(PETSC_USE_REAL_SINGLE) && !defined(PETSC_USE_REAL___FLOAT128)
    816:   PetscBool      ismatlab;
    817: #endif

    820:   PetscObjectTypeCompare((PetscObject)viewer,PETSCVIEWERASCII,&iascii);
    821:   PetscObjectTypeCompare((PetscObject)viewer,PETSCVIEWERBINARY,&isbinary);
    822:   PetscObjectTypeCompare((PetscObject)viewer,PETSCVIEWERDRAW,&isdraw);
    823: #if defined(PETSC_HAVE_MATHEMATICA)
    824:   PetscObjectTypeCompare((PetscObject)viewer,PETSCVIEWERMATHEMATICA,&ismathematica);
    825: #endif
    826: #if defined(PETSC_HAVE_HDF5)
    827:   PetscObjectTypeCompare((PetscObject)viewer,PETSCVIEWERHDF5,&ishdf5);
    828: #endif
    829: #if defined(PETSC_HAVE_MATLAB_ENGINE) && !defined(PETSC_USE_COMPLEX) && !defined(PETSC_USE_REAL_SINGLE) && !defined(PETSC_USE_REAL___FLOAT128)
    830:   PetscObjectTypeCompare((PetscObject)viewer,PETSCVIEWERMATLAB,&ismatlab);
    831: #endif
    832:   if (iascii) {
    833:     VecView_MPI_ASCII(xin,viewer);
    834:   } else if (isbinary) {
    835:     VecView_MPI_Binary(xin,viewer);
    836:   } else if (isdraw) {
    837:     PetscViewerFormat format;

    839:     PetscViewerGetFormat(viewer,&format);
    840:     if (format == PETSC_VIEWER_DRAW_LG) {
    841:       VecView_MPI_Draw_LG(xin,viewer);
    842:     } else {
    843:       VecView_MPI_Draw(xin,viewer);
    844:     }
    845: #if defined(PETSC_HAVE_MATHEMATICA)
    846:   } else if (ismathematica) {
    847:     PetscViewerMathematicaPutVector(viewer,xin);
    848: #endif
    849: #if defined(PETSC_HAVE_HDF5)
    850:   } else if (ishdf5) {
    851:     VecView_MPI_HDF5(xin,viewer);
    852: #endif
    853: #if defined(PETSC_HAVE_MATLAB_ENGINE) && !defined(PETSC_USE_COMPLEX) && !defined(PETSC_USE_REAL_SINGLE) && !defined(PETSC_USE_REAL___FLOAT128)
    854:   } else if (ismatlab) {
    855:     VecView_MPI_Matlab(xin,viewer);
    856: #endif
    857:   }
    858:   return(0);
    859: }

    863: PetscErrorCode VecGetSize_MPI(Vec xin,PetscInt *N)
    864: {
    866:   *N = xin->map->N;
    867:   return(0);
    868: }

    872: PetscErrorCode VecGetValues_MPI(Vec xin,PetscInt ni,const PetscInt ix[],PetscScalar y[])
    873: {
    874:   const PetscScalar *xx;
    875:   PetscInt          i,tmp,start = xin->map->range[xin->stash.rank];
    876:   PetscErrorCode    ierr;

    879:   VecGetArrayRead(xin,&xx);
    880:   for (i=0; i<ni; i++) {
    881:     if (xin->stash.ignorenegidx && ix[i] < 0) continue;
    882:     tmp = ix[i] - start;
    883: #if defined(PETSC_USE_DEBUG)
    884:     if (tmp < 0 || tmp >= xin->map->n) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_ARG_OUTOFRANGE,"Can only get local values, trying %D",ix[i]);
    885: #endif
    886:     y[i] = xx[tmp];
    887:   }
    888:   VecRestoreArrayRead(xin,&xx);
    889:   return(0);
    890: }

    894: PetscErrorCode VecSetValues_MPI(Vec xin,PetscInt ni,const PetscInt ix[],const PetscScalar y[],InsertMode addv)
    895: {
    897:   PetscMPIInt    rank    = xin->stash.rank;
    898:   PetscInt       *owners = xin->map->range,start = owners[rank];
    899:   PetscInt       end     = owners[rank+1],i,row;
    900:   PetscScalar    *xx;

    903: #if defined(PETSC_USE_DEBUG)
    904:   if (xin->stash.insertmode == INSERT_VALUES && addv == ADD_VALUES) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_WRONGSTATE,"You have already inserted values; you cannot now add");
    905:   else if (xin->stash.insertmode == ADD_VALUES && addv == INSERT_VALUES) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_WRONGSTATE,"You have already added values; you cannot now insert");
    906: #endif
    907:   VecGetArray(xin,&xx);
    908:   xin->stash.insertmode = addv;

    910:   if (addv == INSERT_VALUES) {
    911:     for (i=0; i<ni; i++) {
    912:       if (xin->stash.ignorenegidx && ix[i] < 0) continue;
    913: #if defined(PETSC_USE_DEBUG)
    914:       if (ix[i] < 0) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_ARG_OUTOFRANGE,"Out of range index value %D cannot be negative",ix[i]);
    915: #endif
    916:       if ((row = ix[i]) >= start && row < end) {
    917:         xx[row-start] = y[i];
    918:       } else if (!xin->stash.donotstash) {
    919: #if defined(PETSC_USE_DEBUG)
    920:         if (ix[i] >= xin->map->N) SETERRQ2(PETSC_COMM_SELF,PETSC_ERR_ARG_OUTOFRANGE,"Out of range index value %D maximum %D",ix[i],xin->map->N);
    921: #endif
    922:         VecStashValue_Private(&xin->stash,row,y[i]);
    923:       }
    924:     }
    925:   } else {
    926:     for (i=0; i<ni; i++) {
    927:       if (xin->stash.ignorenegidx && ix[i] < 0) continue;
    928: #if defined(PETSC_USE_DEBUG)
    929:       if (ix[i] < 0) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_ARG_OUTOFRANGE,"Out of range index value %D cannot be negative",ix[i]);
    930: #endif
    931:       if ((row = ix[i]) >= start && row < end) {
    932:         xx[row-start] += y[i];
    933:       } else if (!xin->stash.donotstash) {
    934: #if defined(PETSC_USE_DEBUG)
    935:         if (ix[i] > xin->map->N) SETERRQ2(PETSC_COMM_SELF,PETSC_ERR_ARG_OUTOFRANGE,"Out of range index value %D maximum %D",ix[i],xin->map->N);
    936: #endif
    937:         VecStashValue_Private(&xin->stash,row,y[i]);
    938:       }
    939:     }
    940:   }
    941:   VecRestoreArray(xin,&xx);
    942:   return(0);
    943: }

    947: PetscErrorCode VecSetValuesBlocked_MPI(Vec xin,PetscInt ni,const PetscInt ix[],const PetscScalar yin[],InsertMode addv)
    948: {
    949:   PetscMPIInt    rank    = xin->stash.rank;
    950:   PetscInt       *owners = xin->map->range,start = owners[rank];
    952:   PetscInt       end = owners[rank+1],i,row,bs = xin->map->bs,j;
    953:   PetscScalar    *xx,*y = (PetscScalar*)yin;

    956:   VecGetArray(xin,&xx);
    957: #if defined(PETSC_USE_DEBUG)
    958:   if (xin->stash.insertmode == INSERT_VALUES && addv == ADD_VALUES) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_WRONGSTATE,"You have already inserted values; you cannot now add");
    959:   else if (xin->stash.insertmode == ADD_VALUES && addv == INSERT_VALUES) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_WRONGSTATE,"You have already added values; you cannot now insert");
    960: #endif
    961:   xin->stash.insertmode = addv;

    963:   if (addv == INSERT_VALUES) {
    964:     for (i=0; i<ni; i++) {
    965:       if ((row = bs*ix[i]) >= start && row < end) {
    966:         for (j=0; j<bs; j++) xx[row-start+j] = y[j];
    967:       } else if (!xin->stash.donotstash) {
    968:         if (ix[i] < 0) continue;
    969: #if defined(PETSC_USE_DEBUG)
    970:         if (ix[i] >= xin->map->N) SETERRQ2(PETSC_COMM_SELF,PETSC_ERR_ARG_OUTOFRANGE,"Out of range index value %D max %D",ix[i],xin->map->N);
    971: #endif
    972:         VecStashValuesBlocked_Private(&xin->bstash,ix[i],y);
    973:       }
    974:       y += bs;
    975:     }
    976:   } else {
    977:     for (i=0; i<ni; i++) {
    978:       if ((row = bs*ix[i]) >= start && row < end) {
    979:         for (j=0; j<bs; j++) xx[row-start+j] += y[j];
    980:       } else if (!xin->stash.donotstash) {
    981:         if (ix[i] < 0) continue;
    982: #if defined(PETSC_USE_DEBUG)
    983:         if (ix[i] > xin->map->N) SETERRQ2(PETSC_COMM_SELF,PETSC_ERR_ARG_OUTOFRANGE,"Out of range index value %D max %D",ix[i],xin->map->N);
    984: #endif
    985:         VecStashValuesBlocked_Private(&xin->bstash,ix[i],y);
    986:       }
    987:       y += bs;
    988:     }
    989:   }
    990:   VecRestoreArray(xin,&xx);
    991:   return(0);
    992: }

    994: /*
    995:    Since nsends or nreceives may be zero we add 1 in certain mallocs
    996: to make sure we never malloc an empty one.
    997: */
    1000: PetscErrorCode VecAssemblyBegin_MPI(Vec xin)
    1001: {
    1003:   PetscInt       *owners = xin->map->range,*bowners,i,bs,nstash,reallocs;
    1004:   PetscMPIInt    size;
    1005:   InsertMode     addv;
    1006:   MPI_Comm       comm;

    1009:   PetscObjectGetComm((PetscObject)xin,&comm);
    1010:   if (xin->stash.donotstash) return(0);

    1012:   MPI_Allreduce((PetscEnum*)&xin->stash.insertmode,(PetscEnum*)&addv,1,MPIU_ENUM,MPI_BOR,comm);
    1013:   if (addv == (ADD_VALUES|INSERT_VALUES)) SETERRQ(comm,PETSC_ERR_ARG_NOTSAMETYPE,"Some processors inserted values while others added");
    1014:   xin->stash.insertmode = addv; /* in case this processor had no cache */

    1016:   bs   = xin->map->bs;
    1017:   MPI_Comm_size(PetscObjectComm((PetscObject)xin),&size);
    1018:   if (!xin->bstash.bowners && xin->map->bs != -1) {
    1019:     PetscMalloc((size+1)*sizeof(PetscInt),&bowners);
    1020:     for (i=0; i<size+1; i++) bowners[i] = owners[i]/bs;
    1021:     xin->bstash.bowners = bowners;
    1022:   } else bowners = xin->bstash.bowners;

    1024:   VecStashScatterBegin_Private(&xin->stash,owners);
    1025:   VecStashScatterBegin_Private(&xin->bstash,bowners);
    1026:   VecStashGetInfo_Private(&xin->stash,&nstash,&reallocs);
    1027:   PetscInfo2(xin,"Stash has %D entries, uses %D mallocs.\n",nstash,reallocs);
    1028:   VecStashGetInfo_Private(&xin->bstash,&nstash,&reallocs);
    1029:   PetscInfo2(xin,"Block-Stash has %D entries, uses %D mallocs.\n",nstash,reallocs);
    1030:   return(0);
    1031: }

    1035: PetscErrorCode VecAssemblyEnd_MPI(Vec vec)
    1036: {
    1038:   PetscInt       base,i,j,*row,flg,bs;
    1039:   PetscMPIInt    n;
    1040:   PetscScalar    *val,*vv,*array,*xarray;

    1043:   if (!vec->stash.donotstash) {
    1044:     VecGetArray(vec,&xarray);
    1045:     base = vec->map->range[vec->stash.rank];
    1046:     bs   = vec->map->bs;

    1048:     /* Process the stash */
    1049:     while (1) {
    1050:       VecStashScatterGetMesg_Private(&vec->stash,&n,&row,&val,&flg);
    1051:       if (!flg) break;
    1052:       if (vec->stash.insertmode == ADD_VALUES) {
    1053:         for (i=0; i<n; i++) xarray[row[i] - base] += val[i];
    1054:       } else if (vec->stash.insertmode == INSERT_VALUES) {
    1055:         for (i=0; i<n; i++) xarray[row[i] - base] = val[i];
    1056:       } else SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_CORRUPT,"Insert mode is not set correctly; corrupted vector");
    1057:     }
    1058:     VecStashScatterEnd_Private(&vec->stash);

    1060:     /* now process the block-stash */
    1061:     while (1) {
    1062:       VecStashScatterGetMesg_Private(&vec->bstash,&n,&row,&val,&flg);
    1063:       if (!flg) break;
    1064:       for (i=0; i<n; i++) {
    1065:         array = xarray+row[i]*bs-base;
    1066:         vv    = val+i*bs;
    1067:         if (vec->stash.insertmode == ADD_VALUES) {
    1068:           for (j=0; j<bs; j++) array[j] += vv[j];
    1069:         } else if (vec->stash.insertmode == INSERT_VALUES) {
    1070:           for (j=0; j<bs; j++) array[j] = vv[j];
    1071:         } else SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_CORRUPT,"Insert mode is not set correctly; corrupted vector");
    1072:       }
    1073:     }
    1074:     VecStashScatterEnd_Private(&vec->bstash);
    1075:     VecRestoreArray(vec,&xarray);
    1076:   }
    1077:   vec->stash.insertmode = NOT_SET_VALUES;
    1078:   return(0);
    1079: }