1: static char help[] = "Test MatMatMult() and MatTransposeMatMult() for MPIAIJ and MPIDENSE matrices. \n\
  2:                       Sequential part of mpidense matrix allows changes made by MatDenseSetLDA(). \n\n";

  4: #include <petsc.h>

  6: int main(int argc, char ** argv)
  7: {
  8:   Mat            A, B, C, C1;
  9:   PetscMPIInt    size;
 11:   PetscInt       i,ia[2] = { 0, 2 }, ja[2] = { 0, 1 }, lda = 4;
 12:   PetscScalar    a[2] = { 1.0, 1.0 }, *data;
 13:   PetscBool      flg;

 15:   PetscInitialize(&argc, &argv, (char*)0,help);if (ierr) return ierr;
 16:   MPI_Comm_size(PETSC_COMM_WORLD, &size);
 17:   if (size != 2) SETERRQ(PETSC_COMM_WORLD,PETSC_ERR_SUP,"Must use 2 processors");

 19:   MatCreate(PETSC_COMM_WORLD, &A);
 20:   MatSetType(A, MATMPIAIJ);
 21:   MatSetSizes(A, 1, 1, 2, 2);
 22:   MatMPIAIJSetPreallocationCSR(A, ia, ja, a);

 24:   PetscCalloc1(4 * lda,&data);
 25:   for (i = 0; i < 4; ++i) data[lda * i] = i * 1.0;

 27:   MatCreateDense(PETSC_COMM_WORLD, 1, PETSC_DECIDE, 2, 4, data, &B);
 28:   MatSetOptionsPrefix(B,"b_");
 29:   MatSetFromOptions(B);
 30:   MatDenseSetLDA(B, lda);

 32:   /* Test MatMatMult() */
 33:   MatMatMult(A, B, MAT_INITIAL_MATRIX, PETSC_DEFAULT, &C);
 34:   MatMatMult(A, B, MAT_REUSE_MATRIX, PETSC_DEFAULT, &C);

 36:   MatMatMultEqual(A,B,C,10,&flg);
 37:   if (!flg) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_NOTSAMETYPE,"Error in MatMatMult() for C");

 39:   /* Test user-provided mpidense matrix product */
 40:   MatDuplicate(C,MAT_COPY_VALUES,&C1);
 41:   MatMatMult(A, B, MAT_REUSE_MATRIX, PETSC_DEFAULT, &C1);
 42:   MatMatMultEqual(A,B,C1,10,&flg);
 43:   if (!flg) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_NOTSAMETYPE,"Error in MatMatMult() for C1");

 45:   MatDestroy(&C1);
 46:   MatDestroy(&C);

 48:   /* Test MatTransposeMatMult() */
 49:   MatTransposeMatMult(A, B, MAT_INITIAL_MATRIX, PETSC_DEFAULT, &C);
 50:   MatTransposeMatMult(A, B, MAT_REUSE_MATRIX, PETSC_DEFAULT, &C);

 52:   MatTransposeMatMultEqual(A,B,C,10,&flg);
 53:   if (!flg) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_NOTSAMETYPE,"Error in MatTransposeMatMult()");
 54:   MatDestroy(&C);

 56:   MatDestroy(&B);
 57:   MatDestroy(&A);
 58:   PetscFree(data);

 60:   PetscFinalize();
 61:   return ierr;
 62: }

 64: /*TEST

 66:    test:
 67:       suffix: 1
 68:       nsize: 2
 69:       output_file: output/ex34.out

 71:    test:
 72:       suffix: 1_cuda
 73:       requires: cuda
 74:       nsize: 2
 75:       args: -b_mat_type mpidensecuda
 76:       output_file: output/ex34.out
 77: TEST*/