1 static char help[] = "Read a non-complex sparse matrix from a Matrix Market (v. 2.0) file\n\ 2 and write it to a file in petsc sparse binary format. If the matrix is symmetric, the binary file is in \n\ 3 PETSc MATSBAIJ format, otherwise it is in MATAIJ format \n\ 4 Usage: ./ex72 -fin <infile> -fout <outfile> \n\ 5 (See https://math.nist.gov/MatrixMarket/ for details.)\n\ 6 The option -permute <natural,rcm,nd,...> permutes the matrix using the ordering type.\n\ 7 The option -aij_only allows to use MATAIJ for all cases.\n\\n"; 8 9 /* 10 NOTES: 11 12 1) Matrix Market files are always 1-based, i.e. the index of the first 13 element of a matrix is (1,1), not (0,0) as in C. ADJUST THESE 14 OFFSETS ACCORDINGLY offsets accordingly when reading and writing 15 to files. 16 17 2) ANSI C requires one to use the "l" format modifier when reading 18 double precision floating point numbers in scanf() and 19 its variants. For example, use "%lf", "%lg", or "%le" 20 when reading doubles, otherwise errors will occur. 21 */ 22 #include <petscmat.h> 23 #include "mmloader.h" 24 25 int main(int argc, char **argv) 26 { 27 MM_typecode matcode; 28 FILE *file; 29 PetscInt M, N, nz; 30 Mat A; 31 char filein[PETSC_MAX_PATH_LEN], fileout[PETSC_MAX_PATH_LEN]; 32 char ordering[256] = MATORDERINGRCM; 33 PetscViewer view; 34 PetscBool flag, symmetric = PETSC_FALSE, aijonly = PETSC_FALSE, permute = PETSC_FALSE; 35 IS rowperm = NULL, colperm = NULL; 36 PetscMPIInt size; 37 38 PetscInitialize(&argc, &argv, (char *)0, help); 39 PetscCallMPI(MPI_Comm_size(PETSC_COMM_WORLD, &size)); 40 PetscCheck(size == 1, PETSC_COMM_WORLD, PETSC_ERR_WRONG_MPI_SIZE, "This is a uniprocessor example only!"); 41 42 PetscOptionsBegin(PETSC_COMM_WORLD, NULL, "Matrix Market example options", ""); 43 { 44 PetscCall(PetscOptionsString("-fin", "Input Matrix Market file", "", filein, filein, sizeof(filein), &flag)); 45 PetscCheck(flag, PETSC_COMM_SELF, PETSC_ERR_USER_INPUT, "Please use -fin <filename> to specify the input file name!"); 46 PetscCall(PetscOptionsString("-fout", "Output file in petsc sparse binary format", "", fileout, fileout, sizeof(fileout), &flag)); 47 PetscCheck(flag, PETSC_COMM_SELF, PETSC_ERR_USER_INPUT, "Please use -fout <filename> to specify the output file name!"); 48 PetscCall(PetscOptionsBool("-aij_only", "Use MATAIJ for all cases", "", aijonly, &aijonly, NULL)); 49 PetscCall(PetscOptionsFList("-permute", "Permute matrix and vector to solving in new ordering", "", MatOrderingList, ordering, ordering, sizeof(ordering), &permute)); 50 } 51 PetscOptionsEnd(); 52 53 PetscCall(MatCreateFromMTX(&A, filein, aijonly)); 54 PetscCall(PetscFOpen(PETSC_COMM_SELF, filein, "r", &file)); 55 PetscCall(mm_read_banner(file, &matcode)); 56 if (mm_is_symmetric(matcode)) symmetric = PETSC_TRUE; 57 PetscCall(mm_write_banner(stdout, matcode)); 58 PetscCall(mm_read_mtx_crd_size(file, &M, &N, &nz)); 59 PetscCall(PetscFClose(PETSC_COMM_SELF, file)); 60 PetscCall(PetscPrintf(PETSC_COMM_SELF, "M: %d, N: %d, nnz: %d\n", M, N, nz)); 61 PetscCall(PetscPrintf(PETSC_COMM_SELF, "Reading matrix completes.\n")); 62 if (permute) { 63 Mat Aperm; 64 PetscCall(MatGetOrdering(A, ordering, &rowperm, &colperm)); 65 PetscCall(MatPermute(A, rowperm, colperm, &Aperm)); 66 PetscCall(MatDestroy(&A)); 67 A = Aperm; /* Replace original operator with permuted version */ 68 } 69 70 /* Write out matrix */ 71 PetscCall(PetscPrintf(PETSC_COMM_SELF, "Writing matrix to binary file %s using PETSc %s format ...\n", fileout, (symmetric && !aijonly) ? "SBAIJ" : "AIJ")); 72 PetscCall(PetscViewerBinaryOpen(PETSC_COMM_SELF, fileout, FILE_MODE_WRITE, &view)); 73 PetscCall(MatView(A, view)); 74 PetscCall(PetscViewerDestroy(&view)); 75 PetscCall(PetscPrintf(PETSC_COMM_SELF, "Writing matrix completes.\n")); 76 77 PetscCall(MatDestroy(&A)); 78 PetscCall(ISDestroy(&rowperm)); 79 PetscCall(ISDestroy(&colperm)); 80 PetscCall(PetscFinalize()); 81 return 0; 82 } 83 84 /*TEST 85 86 build: 87 requires: !complex double !defined(PETSC_USE_64BIT_INDICES) 88 depends: mmloader.c mmio.c 89 90 test: 91 suffix: 1 92 args: -fin ${wPETSC_DIR}/share/petsc/datafiles/matrices/amesos2_test_mat0.mtx -fout petscmat.aij 93 output_file: output/ex72_1.out 94 95 test: 96 suffix: 2 97 args: -fin ${wPETSC_DIR}/share/petsc/datafiles/matrices/LFAT5.mtx -fout petscmat.sbaij 98 output_file: output/ex72_2.out 99 100 test: 101 suffix: 3 102 args: -fin ${wPETSC_DIR}/share/petsc/datafiles/matrices/m_05_05_crk.mtx -fout petscmat2.aij 103 output_file: output/ex72_3.out 104 105 test: 106 suffix: 4 107 args: -fin ${wPETSC_DIR}/share/petsc/datafiles/matrices/amesos2_test_mat0.mtx -fout petscmat.aij -permute rcm 108 output_file: output/ex72_4.out 109 TEST*/ 110