Actual source code: matio.c

  1: #include <petscviewer.h>
  2: #include <petsc/private/matimpl.h>

  4: PetscErrorCode MatView_Binary_BlockSizes(Mat mat,PetscViewer viewer)
  5: {
  6:   FILE           *info;
  7:   PetscMPIInt    rank;
  8:   PetscInt       rbs,cbs;

 10:   MatGetBlockSizes(mat,&rbs,&cbs);
 11:   PetscViewerBinaryGetInfoPointer(viewer,&info);
 12:   MPI_Comm_rank(PetscObjectComm((PetscObject)viewer),&rank);
 13:   if (rank == 0 && info) {
 14:     if (rbs != cbs) PetscFPrintf(PETSC_COMM_SELF,info,"-matload_block_size %" PetscInt_FMT ",%" PetscInt_FMT "\n",rbs,cbs);
 15:     else            PetscFPrintf(PETSC_COMM_SELF,info,"-matload_block_size %" PetscInt_FMT "\n",rbs);
 16:   }
 17:   return 0;
 18: }

 20: PetscErrorCode MatLoad_Binary_BlockSizes(Mat mat,PetscViewer viewer)
 21: {
 22:   PetscInt       rbs,cbs,bs[2],n = 2;
 23:   PetscBool      set;

 26:   /* get current block sizes */
 27:   MatGetBlockSizes(mat,&rbs,&cbs);
 28:   bs[0] = rbs; bs[1] = cbs;
 29:   /* get block sizes from the options database */
 30:   PetscOptionsBegin(PetscObjectComm((PetscObject)viewer),NULL,"Options for loading matrix block size","Mat");
 31:   PetscOptionsIntArray("-matload_block_size","Set the block size used to store the matrix","MatLoad",bs,&n,&set);
 32:   PetscOptionsEnd();
 33:   if (!set) return 0;
 34:   if (n == 1) bs[1] = bs[0]; /* to support -matload_block_size <bs> */
 35:   /* set matrix block sizes */
 36:   if (bs[0] > 0) rbs = bs[0];
 37:   if (bs[1] > 0) cbs = bs[1];
 38:   MatSetBlockSizes(mat,rbs,cbs);
 39:   return 0;
 40: }