Actual source code: ex34.c

  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;
 10:   PetscInt       i,ia[2] = { 0, 2 }, ja[2] = { 0, 1 }, lda = 4;
 11:   PetscScalar    a[2] = { 1.0, 1.0 }, *data;
 12:   PetscBool      flg;

 14:   PetscInitialize(&argc, &argv, (char*)0,help);
 15:   MPI_Comm_size(PETSC_COMM_WORLD, &size);

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

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

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

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

 35:   MatMatMultEqual(A,B,C,10,&flg);

 38:   /* Test user-provided mpidense matrix product */
 39:   MatDuplicate(C,MAT_COPY_VALUES,&C1);
 40:   MatMatMult(A, B, MAT_REUSE_MATRIX, PETSC_DEFAULT, &C1);
 41:   MatMatMultEqual(A,B,C1,10,&flg);

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

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

 51:   MatTransposeMatMultEqual(A,B,C,10,&flg);
 53:   MatDestroy(&C);

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

 59:   PetscFinalize();
 60:   return 0;
 61: }

 63: /*TEST

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

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