1 #ifndef PETSC_CUSPARSEMATIMPL_H 2 #define PETSC_CUSPARSEMATIMPL_H 3 4 #include <petscpkg_version.h> 5 #include <../src/vec/vec/impls/seq/cupm/vecseqcupm.hpp> /* for VecSeq_CUPM */ 6 #include <petsc/private/petsclegacycupmblas.h> 7 8 #include <cusparse_v2.h> 9 10 #include <algorithm> 11 #include <vector> 12 13 #include <thrust/device_vector.h> 14 #include <thrust/device_ptr.h> 15 #include <thrust/device_malloc_allocator.h> 16 #include <thrust/transform.h> 17 #include <thrust/functional.h> 18 #include <thrust/sequence.h> 19 #include <thrust/system/system_error.h> 20 21 #if defined(PETSC_USE_COMPLEX) 22 #if defined(PETSC_USE_REAL_SINGLE) 23 const cuComplex PETSC_CUSPARSE_ONE = {1.0f, 0.0f}; 24 const cuComplex PETSC_CUSPARSE_ZERO = {0.0f, 0.0f}; 25 #define cusparseXcsrilu02_bufferSize(a, b, c, d, e, f, g, h, i) cusparseCcsrilu02_bufferSize(a, b, c, d, (cuComplex *)e, f, g, h, i) 26 #define cusparseXcsrilu02_analysis(a, b, c, d, e, f, g, h, i, j) cusparseCcsrilu02_analysis(a, b, c, d, (cuComplex *)e, f, g, h, i, j) 27 #define cusparseXcsrilu02(a, b, c, d, e, f, g, h, i, j) cusparseCcsrilu02(a, b, c, d, (cuComplex *)e, f, g, h, i, j) 28 #define cusparseXcsric02_bufferSize(a, b, c, d, e, f, g, h, i) cusparseCcsric02_bufferSize(a, b, c, d, (cuComplex *)e, f, g, h, i) 29 #define cusparseXcsric02_analysis(a, b, c, d, e, f, g, h, i, j) cusparseCcsric02_analysis(a, b, c, d, (cuComplex *)e, f, g, h, i, j) 30 #define cusparseXcsric02(a, b, c, d, e, f, g, h, i, j) cusparseCcsric02(a, b, c, d, (cuComplex *)e, f, g, h, i, j) 31 #elif defined(PETSC_USE_REAL_DOUBLE) 32 const cuDoubleComplex PETSC_CUSPARSE_ONE = {1.0, 0.0}; 33 const cuDoubleComplex PETSC_CUSPARSE_ZERO = {0.0, 0.0}; 34 #define cusparseXcsrilu02_bufferSize(a, b, c, d, e, f, g, h, i) cusparseZcsrilu02_bufferSize(a, b, c, d, (cuDoubleComplex *)e, f, g, h, i) 35 #define cusparseXcsrilu02_analysis(a, b, c, d, e, f, g, h, i, j) cusparseZcsrilu02_analysis(a, b, c, d, (cuDoubleComplex *)e, f, g, h, i, j) 36 #define cusparseXcsrilu02(a, b, c, d, e, f, g, h, i, j) cusparseZcsrilu02(a, b, c, d, (cuDoubleComplex *)e, f, g, h, i, j) 37 #define cusparseXcsric02_bufferSize(a, b, c, d, e, f, g, h, i) cusparseZcsric02_bufferSize(a, b, c, d, (cuDoubleComplex *)e, f, g, h, i) 38 #define cusparseXcsric02_analysis(a, b, c, d, e, f, g, h, i, j) cusparseZcsric02_analysis(a, b, c, d, (cuDoubleComplex *)e, f, g, h, i, j) 39 #define cusparseXcsric02(a, b, c, d, e, f, g, h, i, j) cusparseZcsric02(a, b, c, d, (cuDoubleComplex *)e, f, g, h, i, j) 40 #endif 41 #else 42 const PetscScalar PETSC_CUSPARSE_ONE = 1.0; 43 const PetscScalar PETSC_CUSPARSE_ZERO = 0.0; 44 #if defined(PETSC_USE_REAL_SINGLE) 45 #define cusparseXcsrilu02_bufferSize cusparseScsrilu02_bufferSize 46 #define cusparseXcsrilu02_analysis cusparseScsrilu02_analysis 47 #define cusparseXcsrilu02 cusparseScsrilu02 48 #define cusparseXcsric02_bufferSize cusparseScsric02_bufferSize 49 #define cusparseXcsric02_analysis cusparseScsric02_analysis 50 #define cusparseXcsric02 cusparseScsric02 51 #elif defined(PETSC_USE_REAL_DOUBLE) 52 #define cusparseXcsrilu02_bufferSize cusparseDcsrilu02_bufferSize 53 #define cusparseXcsrilu02_analysis cusparseDcsrilu02_analysis 54 #define cusparseXcsrilu02 cusparseDcsrilu02 55 #define cusparseXcsric02_bufferSize cusparseDcsric02_bufferSize 56 #define cusparseXcsric02_analysis cusparseDcsric02_analysis 57 #define cusparseXcsric02 cusparseDcsric02 58 #endif 59 #endif 60 61 #if PETSC_PKG_CUDA_VERSION_GE(9, 0, 0) 62 #define csrsvInfo_t csrsv2Info_t 63 #define cusparseCreateCsrsvInfo cusparseCreateCsrsv2Info 64 #define cusparseDestroyCsrsvInfo cusparseDestroyCsrsv2Info 65 #if defined(PETSC_USE_COMPLEX) 66 #if defined(PETSC_USE_REAL_SINGLE) 67 #define cusparseXcsrsv_buffsize(a, b, c, d, e, f, g, h, i, j) cusparseCcsrsv2_bufferSize(a, b, c, d, e, (cuComplex *)(f), g, h, i, j) 68 #define cusparseXcsrsv_analysis(a, b, c, d, e, f, g, h, i, j, k) cusparseCcsrsv2_analysis(a, b, c, d, e, (const cuComplex *)(f), g, h, i, j, k) 69 #define cusparseXcsrsv_solve(a, b, c, d, e, f, g, h, i, j, k, l, m, n) cusparseCcsrsv2_solve(a, b, c, d, (const cuComplex *)(e), f, (const cuComplex *)(g), h, i, j, (const cuComplex *)(k), (cuComplex *)(l), m, n) 70 #elif defined(PETSC_USE_REAL_DOUBLE) 71 #define cusparseXcsrsv_buffsize(a, b, c, d, e, f, g, h, i, j) cusparseZcsrsv2_bufferSize(a, b, c, d, e, (cuDoubleComplex *)(f), g, h, i, j) 72 #define cusparseXcsrsv_analysis(a, b, c, d, e, f, g, h, i, j, k) cusparseZcsrsv2_analysis(a, b, c, d, e, (const cuDoubleComplex *)(f), g, h, i, j, k) 73 #define cusparseXcsrsv_solve(a, b, c, d, e, f, g, h, i, j, k, l, m, n) cusparseZcsrsv2_solve(a, b, c, d, (const cuDoubleComplex *)(e), f, (const cuDoubleComplex *)(g), h, i, j, (const cuDoubleComplex *)(k), (cuDoubleComplex *)(l), m, n) 74 #endif 75 #else /* not complex */ 76 #if defined(PETSC_USE_REAL_SINGLE) 77 #define cusparseXcsrsv_buffsize cusparseScsrsv2_bufferSize 78 #define cusparseXcsrsv_analysis cusparseScsrsv2_analysis 79 #define cusparseXcsrsv_solve cusparseScsrsv2_solve 80 #elif defined(PETSC_USE_REAL_DOUBLE) 81 #define cusparseXcsrsv_buffsize cusparseDcsrsv2_bufferSize 82 #define cusparseXcsrsv_analysis cusparseDcsrsv2_analysis 83 #define cusparseXcsrsv_solve cusparseDcsrsv2_solve 84 #endif 85 #endif 86 #else /* PETSC_PKG_CUDA_VERSION_GE(9, 0, 0) */ 87 #define csrsvInfo_t cusparseSolveAnalysisInfo_t 88 #define cusparseCreateCsrsvInfo cusparseCreateSolveAnalysisInfo 89 #define cusparseDestroyCsrsvInfo cusparseDestroySolveAnalysisInfo 90 #if defined(PETSC_USE_COMPLEX) 91 #if defined(PETSC_USE_REAL_SINGLE) 92 #define cusparseXcsrsv_solve(a, b, c, d_IGNORED, e, f, g, h, i, j, k, l, m_IGNORED, n_IGNORED) cusparseCcsrsv_solve((a), (b), (c), (cuComplex *)(e), (f), (cuComplex *)(g), (h), (i), (j), (cuComplex *)(k), (cuComplex *)(l)) 93 #define cusparseXcsrsv_analysis(a, b, c, d, e, f, g, h, i, j_IGNORED, k_IGNORED) cusparseCcsrsv_analysis((a), (b), (c), (d), (e), (cuComplex *)(f), (g), (h), (i)) 94 #elif defined(PETSC_USE_REAL_DOUBLE) 95 #define cusparseXcsrsv_solve(a, b, c, d_IGNORED, e, f, g, h, i, j, k, l, m_IGNORED, n_IGNORED) \ 96 cusparseZcsrsv_solve((a), (b), (c), (cuDoubleComplex *)(e), (f), (cuDoubleComplex *)(g), (h), (i), (j), (cuDoubleComplex *)(k), (cuDoubleComplex *)(l)) 97 #define cusparseXcsrsv_analysis(a, b, c, d, e, f, g, h, i, j_IGNORED, k_IGNORED) cusparseZcsrsv_analysis((a), (b), (c), (d), (e), (cuDoubleComplex *)(f), (g), (h), (i)) 98 #endif 99 #else /* not complex */ 100 #if defined(PETSC_USE_REAL_SINGLE) 101 #define cusparseXcsrsv_solve cusparseScsrsv_solve 102 #define cusparseXcsrsv_analysis(a, b, c, d, e, f, g, h, i, j, k) cusparseScsrsv_analysis(a, b, c, d, e, f, g, h, i) 103 #elif defined(PETSC_USE_REAL_DOUBLE) 104 #define cusparseXcsrsv_solve cusparseDcsrsv_solve 105 #define cusparseXcsrsv_analysis(a, b, c, d, e, f, g, h, i, j, k) cusparseDcsrsv_analysis(a, b, c, d, e, f, g, h, i) 106 #endif 107 #endif 108 #endif /* PETSC_PKG_CUDA_VERSION_GE(9, 0, 0) */ 109 110 #if PETSC_PKG_CUDA_VERSION_GE(11, 0, 0) 111 #define cusparse_csr2csc cusparseCsr2cscEx2 112 #if defined(PETSC_USE_COMPLEX) 113 #if defined(PETSC_USE_REAL_SINGLE) 114 #define cusparse_scalartype CUDA_C_32F 115 #define cusparse_csr_spgeam(a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t) cusparseCcsrgeam2(a, b, c, (cuComplex *)d, e, f, (cuComplex *)g, h, i, (cuComplex *)j, k, l, (cuComplex *)m, n, o, p, (cuComplex *)q, r, s, t) 116 #define cusparse_csr_spgeam_bufferSize(a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t) \ 117 cusparseCcsrgeam2_bufferSizeExt(a, b, c, (cuComplex *)d, e, f, (cuComplex *)g, h, i, (cuComplex *)j, k, l, (cuComplex *)m, n, o, p, (cuComplex *)q, r, s, t) 118 #elif defined(PETSC_USE_REAL_DOUBLE) 119 #define cusparse_scalartype CUDA_C_64F 120 #define cusparse_csr_spgeam(a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t) \ 121 cusparseZcsrgeam2(a, b, c, (cuDoubleComplex *)d, e, f, (cuDoubleComplex *)g, h, i, (cuDoubleComplex *)j, k, l, (cuDoubleComplex *)m, n, o, p, (cuDoubleComplex *)q, r, s, t) 122 #define cusparse_csr_spgeam_bufferSize(a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t) \ 123 cusparseZcsrgeam2_bufferSizeExt(a, b, c, (cuDoubleComplex *)d, e, f, (cuDoubleComplex *)g, h, i, (cuDoubleComplex *)j, k, l, (cuDoubleComplex *)m, n, o, p, (cuDoubleComplex *)q, r, s, t) 124 #endif 125 #else /* not complex */ 126 #if defined(PETSC_USE_REAL_SINGLE) 127 #define cusparse_scalartype CUDA_R_32F 128 #define cusparse_csr_spgeam cusparseScsrgeam2 129 #define cusparse_csr_spgeam_bufferSize cusparseScsrgeam2_bufferSizeExt 130 #elif defined(PETSC_USE_REAL_DOUBLE) 131 #define cusparse_scalartype CUDA_R_64F 132 #define cusparse_csr_spgeam cusparseDcsrgeam2 133 #define cusparse_csr_spgeam_bufferSize cusparseDcsrgeam2_bufferSizeExt 134 #endif 135 #endif 136 #else /* PETSC_PKG_CUDA_VERSION_GE(11, 0, 0) */ 137 #if defined(PETSC_USE_COMPLEX) 138 #if defined(PETSC_USE_REAL_SINGLE) 139 #define cusparse_csr_spmv(a, b, c, d, e, f, g, h, i, j, k, l, m) cusparseCcsrmv((a), (b), (c), (d), (e), (cuComplex *)(f), (g), (cuComplex *)(h), (i), (j), (cuComplex *)(k), (cuComplex *)(l), (cuComplex *)(m)) 140 #define cusparse_csr_spmm(a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p) cusparseCcsrmm((a), (b), (c), (d), (e), (f), (cuComplex *)(g), (h), (cuComplex *)(i), (j), (k), (cuComplex *)(l), (m), (cuComplex *)(n), (cuComplex *)(o), (p)) 141 #define cusparse_csr2csc(a, b, c, d, e, f, g, h, i, j, k, l) cusparseCcsr2csc((a), (b), (c), (d), (cuComplex *)(e), (f), (g), (cuComplex *)(h), (i), (j), (k), (l)) 142 #define cusparse_hyb_spmv(a, b, c, d, e, f, g, h) cusparseChybmv((a), (b), (cuComplex *)(c), (d), (e), (cuComplex *)(f), (cuComplex *)(g), (cuComplex *)(h)) 143 #define cusparse_csr2hyb(a, b, c, d, e, f, g, h, i, j) cusparseCcsr2hyb((a), (b), (c), (d), (cuComplex *)(e), (f), (g), (h), (i), (j)) 144 #define cusparse_hyb2csr(a, b, c, d, e, f) cusparseChyb2csr((a), (b), (c), (cuComplex *)(d), (e), (f)) 145 #define cusparse_csr_spgemm(a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t) cusparseCcsrgemm(a, b, c, d, e, f, g, h, (cuComplex *)i, j, k, l, m, (cuComplex *)n, o, p, q, (cuComplex *)r, s, t) 146 #define cusparse_csr_spgeam(a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s) cusparseCcsrgeam(a, b, c, (cuComplex *)d, e, f, (cuComplex *)g, h, i, (cuComplex *)j, k, l, (cuComplex *)m, n, o, p, (cuComplex *)q, r, s) 147 #elif defined(PETSC_USE_REAL_DOUBLE) 148 #define cusparse_csr_spmv(a, b, c, d, e, f, g, h, i, j, k, l, m) cusparseZcsrmv((a), (b), (c), (d), (e), (cuDoubleComplex *)(f), (g), (cuDoubleComplex *)(h), (i), (j), (cuDoubleComplex *)(k), (cuDoubleComplex *)(l), (cuDoubleComplex *)(m)) 149 #define cusparse_csr_spmm(a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p) \ 150 cusparseZcsrmm((a), (b), (c), (d), (e), (f), (cuDoubleComplex *)(g), (h), (cuDoubleComplex *)(i), (j), (k), (cuDoubleComplex *)(l), (m), (cuDoubleComplex *)(n), (cuDoubleComplex *)(o), (p)) 151 #define cusparse_csr2csc(a, b, c, d, e, f, g, h, i, j, k, l) cusparseZcsr2csc((a), (b), (c), (d), (cuDoubleComplex *)(e), (f), (g), (cuDoubleComplex *)(h), (i), (j), (k), (l)) 152 #define cusparse_hyb_spmv(a, b, c, d, e, f, g, h) cusparseZhybmv((a), (b), (cuDoubleComplex *)(c), (d), (e), (cuDoubleComplex *)(f), (cuDoubleComplex *)(g), (cuDoubleComplex *)(h)) 153 #define cusparse_csr2hyb(a, b, c, d, e, f, g, h, i, j) cusparseZcsr2hyb((a), (b), (c), (d), (cuDoubleComplex *)(e), (f), (g), (h), (i), (j)) 154 #define cusparse_hyb2csr(a, b, c, d, e, f) cusparseZhyb2csr((a), (b), (c), (cuDoubleComplex *)(d), (e), (f)) 155 #define cusparse_csr_spgemm(a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t) cusparseZcsrgemm(a, b, c, d, e, f, g, h, (cuDoubleComplex *)i, j, k, l, m, (cuDoubleComplex *)n, o, p, q, (cuDoubleComplex *)r, s, t) 156 #define cusparse_csr_spgeam(a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s) \ 157 cusparseZcsrgeam(a, b, c, (cuDoubleComplex *)d, e, f, (cuDoubleComplex *)g, h, i, (cuDoubleComplex *)j, k, l, (cuDoubleComplex *)m, n, o, p, (cuDoubleComplex *)q, r, s) 158 #endif 159 #else 160 #if defined(PETSC_USE_REAL_SINGLE) 161 #define cusparse_csr_spmv cusparseScsrmv 162 #define cusparse_csr_spmm cusparseScsrmm 163 #define cusparse_csr2csc cusparseScsr2csc 164 #define cusparse_hyb_spmv cusparseShybmv 165 #define cusparse_csr2hyb cusparseScsr2hyb 166 #define cusparse_hyb2csr cusparseShyb2csr 167 #define cusparse_csr_spgemm cusparseScsrgemm 168 #define cusparse_csr_spgeam cusparseScsrgeam 169 #elif defined(PETSC_USE_REAL_DOUBLE) 170 #define cusparse_csr_spmv cusparseDcsrmv 171 #define cusparse_csr_spmm cusparseDcsrmm 172 #define cusparse_csr2csc cusparseDcsr2csc 173 #define cusparse_hyb_spmv cusparseDhybmv 174 #define cusparse_csr2hyb cusparseDcsr2hyb 175 #define cusparse_hyb2csr cusparseDhyb2csr 176 #define cusparse_csr_spgemm cusparseDcsrgemm 177 #define cusparse_csr_spgeam cusparseDcsrgeam 178 #endif 179 #endif 180 #endif /* PETSC_PKG_CUDA_VERSION_GE(11, 0, 0) */ 181 182 #define THRUSTINTARRAY32 thrust::device_vector<int> 183 #define THRUSTINTARRAY thrust::device_vector<PetscInt> 184 #define THRUSTARRAY thrust::device_vector<PetscScalar> 185 186 /* A CSR matrix structure */ 187 struct CsrMatrix { 188 PetscInt num_rows; 189 PetscInt num_cols; 190 PetscInt num_entries; 191 THRUSTINTARRAY32 *row_offsets; 192 THRUSTINTARRAY32 *column_indices; 193 THRUSTARRAY *values; 194 }; 195 196 /* This is struct holding the relevant data needed to a MatSolve */ 197 struct Mat_SeqAIJCUSPARSETriFactorStruct { 198 /* Data needed for triangular solve */ 199 cusparseMatDescr_t descr; 200 cusparseOperation_t solveOp; 201 CsrMatrix *csrMat; 202 csrsvInfo_t solveInfo; 203 cusparseSolvePolicy_t solvePolicy; /* whether level information is generated and used */ 204 int solveBufferSize; 205 void *solveBuffer; 206 size_t csr2cscBufferSize; /* to transpose the triangular factor (only used for CUDA >= 11.0) */ 207 void *csr2cscBuffer; 208 PetscScalar *AA_h; /* managed host buffer for moving values to the GPU */ 209 }; 210 211 /* This is a larger struct holding all the triangular factors for a solve, transpose solve, and any indices used in a reordering */ 212 struct Mat_SeqAIJCUSPARSETriFactors { 213 Mat_SeqAIJCUSPARSETriFactorStruct *loTriFactorPtr; /* pointer for lower triangular (factored matrix) on GPU */ 214 Mat_SeqAIJCUSPARSETriFactorStruct *upTriFactorPtr; /* pointer for upper triangular (factored matrix) on GPU */ 215 Mat_SeqAIJCUSPARSETriFactorStruct *loTriFactorPtrTranspose; /* pointer for lower triangular (factored matrix) on GPU for the transpose (useful for BiCG) */ 216 Mat_SeqAIJCUSPARSETriFactorStruct *upTriFactorPtrTranspose; /* pointer for upper triangular (factored matrix) on GPU for the transpose (useful for BiCG)*/ 217 THRUSTINTARRAY *rpermIndices; /* indices used for any reordering */ 218 THRUSTINTARRAY *cpermIndices; /* indices used for any reordering */ 219 THRUSTARRAY *workVector; 220 cusparseHandle_t handle; /* a handle to the cusparse library */ 221 PetscInt nnz; /* number of nonzeros ... need this for accurate logging between ICC and ILU */ 222 PetscScalar *a_band_d; /* GPU data for banded CSR LU factorization matrix diag(L)=1 */ 223 int *i_band_d; /* this could be optimized away */ 224 cudaDeviceProp dev_prop; 225 PetscBool init_dev_prop; 226 227 /* csrilu0/csric0 appeared in cusparse-8.0, but we use it along with cusparseSpSV, 228 which first appeared in cusparse-11.5 with cuda-11.3. 229 */ 230 PetscBool factorizeOnDevice; /* Do factorization on device or not */ 231 #if CUSPARSE_VERSION >= 11500 232 PetscScalar *csrVal; 233 int *csrRowPtr, *csrColIdx; /* a,i,j of M. Using int since some cusparse APIs only support 32-bit indices */ 234 235 /* Mixed mat descriptor types? yes, different cusparse APIs use different types */ 236 cusparseMatDescr_t matDescr_M; 237 cusparseSpMatDescr_t spMatDescr_L, spMatDescr_U; 238 cusparseSpSVDescr_t spsvDescr_L, spsvDescr_Lt, spsvDescr_U, spsvDescr_Ut; 239 240 cusparseDnVecDescr_t dnVecDescr_X, dnVecDescr_Y; 241 PetscScalar *X, *Y; /* data array of dnVec X and Y */ 242 243 /* Mixed size types? yes, CUDA-11.7.0 declared cusparseDcsrilu02_bufferSizeExt() that returns size_t but did not implement it! */ 244 int factBufferSize_M; /* M ~= LU or LLt */ 245 size_t spsvBufferSize_L, spsvBufferSize_Lt, spsvBufferSize_U, spsvBufferSize_Ut; 246 /* cusparse needs various buffers for factorization and solve of L, U, Lt, or Ut. 247 So save memory, we share the factorization buffer with one of spsvBuffer_L/U. 248 */ 249 void *factBuffer_M, *spsvBuffer_L, *spsvBuffer_U, *spsvBuffer_Lt, *spsvBuffer_Ut; 250 251 csrilu02Info_t ilu0Info_M; 252 csric02Info_t ic0Info_M; 253 int structural_zero, numerical_zero; 254 cusparseSolvePolicy_t policy_M; 255 256 /* In MatSolveTranspose() for ILU0, we use the two flags to do on-demand solve */ 257 PetscBool createdTransposeSpSVDescr; /* Have we created SpSV descriptors for Lt, Ut? */ 258 PetscBool updatedTransposeSpSVAnalysis; /* Have we updated SpSV analysis with the latest L, U values? */ 259 260 PetscLogDouble numericFactFlops; /* Estimated FLOPs in ILU0/ICC0 numeric factorization */ 261 #endif 262 }; 263 264 struct Mat_CusparseSpMV { 265 PetscBool initialized; /* Don't rely on spmvBuffer != NULL to test if the struct is initialized, */ 266 size_t spmvBufferSize; /* since I'm not sure if smvBuffer can be NULL even after cusparseSpMV_bufferSize() */ 267 void *spmvBuffer; 268 #if PETSC_PKG_CUDA_VERSION_GE(11, 0, 0) /* these are present from CUDA 10.1, but PETSc code makes use of them from CUDA 11 on */ 269 cusparseDnVecDescr_t vecXDescr, vecYDescr; /* descriptor for the dense vectors in y=op(A)x */ 270 #endif 271 }; 272 273 /* This is struct holding the relevant data needed to a MatMult */ 274 struct Mat_SeqAIJCUSPARSEMultStruct { 275 void *mat; /* opaque pointer to a matrix. This could be either a cusparseHybMat_t or a CsrMatrix */ 276 cusparseMatDescr_t descr; /* Data needed to describe the matrix for a multiply */ 277 THRUSTINTARRAY *cprowIndices; /* compressed row indices used in the parallel SpMV */ 278 PetscScalar *alpha_one; /* pointer to a device "scalar" storing the alpha parameter in the SpMV */ 279 PetscScalar *beta_zero; /* pointer to a device "scalar" storing the beta parameter in the SpMV as zero*/ 280 PetscScalar *beta_one; /* pointer to a device "scalar" storing the beta parameter in the SpMV as one */ 281 #if PETSC_PKG_CUDA_VERSION_GE(11, 0, 0) 282 cusparseSpMatDescr_t matDescr; /* descriptor for the matrix, used by SpMV and SpMM */ 283 Mat_CusparseSpMV cuSpMV[3]; /* different Mat_CusparseSpMV structs for non-transpose, transpose, conj-transpose */ 284 Mat_SeqAIJCUSPARSEMultStruct() : matDescr(NULL) 285 { 286 for (int i = 0; i < 3; i++) cuSpMV[i].initialized = PETSC_FALSE; 287 } 288 #endif 289 }; 290 291 /* This is a larger struct holding all the matrices for a SpMV, and SpMV Transpose */ 292 struct Mat_SeqAIJCUSPARSE { 293 Mat_SeqAIJCUSPARSEMultStruct *mat; /* pointer to the matrix on the GPU */ 294 Mat_SeqAIJCUSPARSEMultStruct *matTranspose; /* pointer to the matrix on the GPU (for the transpose ... useful for BiCG) */ 295 THRUSTARRAY *workVector; /* pointer to a workvector to which we can copy the relevant indices of a vector we want to multiply */ 296 THRUSTINTARRAY32 *rowoffsets_gpu; /* rowoffsets on GPU in non-compressed-row format. It is used to convert CSR to CSC */ 297 PetscInt nrows; /* number of rows of the matrix seen by GPU */ 298 MatCUSPARSEStorageFormat format; /* the storage format for the matrix on the device */ 299 PetscBool use_cpu_solve; /* Use AIJ_Seq (I)LU solve */ 300 cudaStream_t stream; /* a stream for the parallel SpMV ... this is not owned and should not be deleted */ 301 cusparseHandle_t handle; /* a handle to the cusparse library ... this may not be owned (if we're working in parallel i.e. multiGPUs) */ 302 PetscObjectState nonzerostate; /* track nonzero state to possibly recreate the GPU matrix */ 303 #if PETSC_PKG_CUDA_VERSION_GE(11, 0, 0) 304 size_t csr2cscBufferSize; /* stuff used to compute the matTranspose above */ 305 void *csr2cscBuffer; /* This is used as a C struct and is calloc'ed by PetscNew() */ 306 cusparseCsr2CscAlg_t csr2cscAlg; /* algorithms can be selected from command line options */ 307 cusparseSpMVAlg_t spmvAlg; 308 cusparseSpMMAlg_t spmmAlg; 309 #endif 310 THRUSTINTARRAY *csr2csc_i; 311 PetscSplitCSRDataStructure deviceMat; /* Matrix on device for, eg, assembly */ 312 313 /* Stuff for basic COO support */ 314 THRUSTINTARRAY *cooPerm; /* permutation array that sorts the input coo entris by row and col */ 315 THRUSTINTARRAY *cooPerm_a; /* ordered array that indicate i-th nonzero (after sorting) is the j-th unique nonzero */ 316 317 /* Stuff for extended COO support */ 318 PetscBool use_extended_coo; /* Use extended COO format */ 319 PetscCount *jmap_d; /* perm[disp+jmap[i]..disp+jmap[i+1]) gives indices of entries in v[] associated with i-th nonzero of the matrix */ 320 PetscCount *perm_d; 321 322 Mat_SeqAIJCUSPARSE() : use_extended_coo(PETSC_FALSE), jmap_d(NULL), perm_d(NULL) { } 323 }; 324 325 typedef struct Mat_SeqAIJCUSPARSETriFactors *Mat_SeqAIJCUSPARSETriFactors_p; 326 327 PETSC_INTERN PetscErrorCode MatSeqAIJCUSPARSECopyToGPU(Mat); 328 PETSC_INTERN PetscErrorCode MatSetPreallocationCOO_SeqAIJCUSPARSE_Basic(Mat, PetscCount, PetscInt[], PetscInt[]); 329 PETSC_INTERN PetscErrorCode MatSetValuesCOO_SeqAIJCUSPARSE_Basic(Mat, const PetscScalar[], InsertMode); 330 PETSC_INTERN PetscErrorCode MatSeqAIJCUSPARSEMergeMats(Mat, Mat, MatReuse, Mat *); 331 PETSC_INTERN PetscErrorCode MatSeqAIJCUSPARSETriFactors_Reset(Mat_SeqAIJCUSPARSETriFactors_p *); 332 333 using VecSeq_CUDA = Petsc::vec::cupm::impl::VecSeq_CUPM<Petsc::device::cupm::DeviceType::CUDA>; 334 335 static inline bool isCudaMem(const void *data) 336 { 337 using namespace Petsc::device::cupm; 338 auto mtype = PETSC_MEMTYPE_HOST; 339 340 PetscFunctionBegin; 341 PetscCallAbort(PETSC_COMM_SELF, impl::Interface<DeviceType::CUDA>::PetscCUPMGetMemType(data, &mtype)); 342 PetscFunctionReturn(PetscMemTypeDevice(mtype)); 343 } 344 345 #endif // PETSC_CUSPARSEMATIMPL_H 346