Actual source code: ex43.c

  1: static char help[] = "Reads a PETSc matrix from a file and solves a linear system \n\
  2: using the aijcusparse class. Input parameters are:\n\
  3:   -f <input_file> : the file to load\n\n";

  5: /*
  6:   This code can be used to test PETSc interface to other packages.\n\
  7:   Examples of command line options:       \n\
  8:    ./ex43 -f DATAFILESPATH/matrices/cfd.2.10 -mat_cusparse_mult_storage_format ell  \n\
  9:    ./ex43 -f DATAFILESPATH/matrices/shallow_water1 -ksp_type cg -pc_type icc -mat_cusparse_mult_storage_format ell  \n\
 10:    \n\n";
 11: */

 13: #include <petscksp.h>

 15: int main(int argc, char **argv)
 16: {
 17:   KSP         ksp;
 18:   Mat         A;
 19:   Vec         X, B;
 20:   PetscInt    m, its;
 21:   PetscReal   norm;
 22:   char        file[PETSC_MAX_PATH_LEN];
 23:   PetscBool   flg;
 24:   PetscViewer fd;

 27:   PetscInitialize(&argc, &argv, 0, help);
 28:   /* Load the data from a file */
 29:   PetscOptionsGetString(NULL, NULL, "-f", file, sizeof(file), &flg);
 31:   PetscViewerBinaryOpen(PETSC_COMM_WORLD, file, FILE_MODE_READ, &fd);

 33:   /* Build the matrix */
 34:   MatCreate(PETSC_COMM_WORLD, &A);
 35:   MatSetFromOptions(A);
 36:   MatLoad(A, fd);

 38:   /* Build the vectors */
 39:   MatGetLocalSize(A, &m, NULL);
 40:   VecCreate(PETSC_COMM_WORLD, &B);
 41:   VecSetSizes(B, m, PETSC_DECIDE);
 42:   VecCreate(PETSC_COMM_WORLD, &X);
 43:   VecSetSizes(X, m, PETSC_DECIDE);
 44:   VecSetFromOptions(B);
 45:   VecSetFromOptions(X);
 46:   VecSet(B, 1.0);

 48:   /* Build the KSP */
 49:   KSPCreate(PETSC_COMM_WORLD, &ksp);
 50:   KSPSetOperators(ksp, A, A);
 51:   KSPSetType(ksp, KSPGMRES);
 52:   KSPSetTolerances(ksp, 1.0e-12, PETSC_DEFAULT, PETSC_DEFAULT, 100);
 53:   KSPSetFromOptions(ksp);

 55:   /* Solve */
 56:   KSPSolve(ksp, B, X);

 58:   /* print out norm and the number of iterations */
 59:   KSPGetIterationNumber(ksp, &its);
 60:   KSPGetResidualNorm(ksp, &norm);
 61:   PetscPrintf(PETSC_COMM_WORLD, "Number of iterations = %3" PetscInt_FMT "\n", its);
 62:   PetscPrintf(PETSC_COMM_WORLD, "Residual norm %1.5g\n", (double)norm);

 64:   /* Cleanup */
 65:   VecDestroy(&X);
 66:   VecDestroy(&B);
 67:   MatDestroy(&A);
 68:   KSPDestroy(&ksp);
 69:   PetscViewerDestroy(&fd);
 70:   PetscFinalize();
 71:   return 0;
 72: }

 74: /*TEST

 76:    test:
 77:       requires: cuda datafilespath double !complex !defined(PETSC_USE_64BIT_INDICES) !CUDA_VERSION_11PLUS
 78:       args: -f ${DATAFILESPATH}/matrices/cfd.2.10 -mat_type seqaijcusparse -pc_factor_mat_solver_type cusparse -mat_cusparse_storage_format ell -vec_type cuda -pc_type ilu

 80:    test:
 81:       suffix: 2
 82:       requires: cuda datafilespath double !complex !defined(PETSC_USE_64BIT_INDICES) !CUDA_VERSION_11PLUS
 83:       args: -f ${DATAFILESPATH}/matrices/shallow_water1 -mat_type seqaijcusparse -pc_factor_mat_solver_type cusparse -mat_cusparse_storage_format hyb -vec_type cuda -ksp_type cg -pc_type icc

 85:    testset:
 86:       requires: datafilespath double !complex !defined(PETSC_USE_64BIT_INDICES)
 87:       args: -f ${DATAFILESPATH}/matrices/cfd.2.10 -ksp_type bicg -pc_type ilu

 89:       test:
 90:          suffix: 3
 91:          requires: cuda
 92:          args: -mat_type seqaijcusparse -pc_factor_mat_solver_type cusparse -mat_cusparse_storage_format csr -vec_type cuda
 93:       test:
 94:          suffix: 4
 95:          requires: cuda
 96:          args: -mat_type seqaijcusparse -pc_factor_mat_solver_type cusparse -mat_cusparse_storage_format csr -vec_type cuda -pc_factor_mat_ordering_type nd
 97:       test: # Test MatSolveTranspose
 98:          suffix: 3_kokkos
 99:          requires: kokkos_kernels
100:          args: -mat_type seqaijkokkos -pc_factor_mat_solver_type kokkos -vec_type kokkos
101:          output_file: output/ex43_3.out

103:    testset:
104:       nsize: 2
105:       requires: cuda datafilespath double !complex !defined(PETSC_USE_64BIT_INDICES) !CUDA_VERSION_11PLUS
106:       args: -f ${DATAFILESPATH}/matrices/shallow_water1 -mat_type mpiaijcusparse -mat_cusparse_mult_diag_storage_format hyb -pc_type none -vec_type cuda
107:       test:
108:         suffix: 5
109:         args: -use_gpu_aware_mpi 0
110:       test:
111:         suffix: 5_gpu_aware_mpi
112:         output_file: output/ex43_5.out

114:    test:
115:       suffix: 6
116:       requires: cuda datafilespath double !complex !defined(PETSC_USE_64BIT_INDICES)
117:       args: -f ${DATAFILESPATH}/matrices/shallow_water1 -mat_type seqaijcusparse -pc_type none -vec_type cuda

119:    testset:
120:       nsize: 2
121:       requires: cuda datafilespath double !complex !defined(PETSC_USE_64BIT_INDICES)
122:       args: -f ${DATAFILESPATH}/matrices/shallow_water1 -mat_type mpiaijcusparse -pc_type none -vec_type cuda

124:       test:
125:         suffix: 7
126:         args: -use_gpu_aware_mpi 0
127:       test:
128:         suffix: 7_gpu_aware_mpi
129:         output_file: output/ex43_7.out

131:    test:
132:       suffix: 8
133:       requires: viennacl datafilespath double !complex !defined(PETSC_USE_64BIT_INDICES)
134:       args: -f ${DATAFILESPATH}/matrices/shallow_water1 -mat_type seqaijviennacl -pc_type none -vec_type viennacl
135:       output_file: output/ex43_6.out

137:    test:
138:       suffix: 9
139:       nsize: 2
140:       requires: viennacl datafilespath double !complex !defined(PETSC_USE_64BIT_INDICES)
141:       args: -f ${DATAFILESPATH}/matrices/shallow_water1 -mat_type mpiaijviennacl -pc_type none -vec_type viennacl
142:       output_file: output/ex43_7.out

144:    test:
145:       suffix: 10
146:       nsize: 2
147:       requires: kokkos_kernels datafilespath double !complex !defined(PETSC_USE_64BIT_INDICES)
148:       args: -f ${DATAFILESPATH}/matrices/shallow_water1 -mat_type aijkokkos -vec_type kokkos

150: TEST*/