Actual source code: cudavecimpl.h
petsc-3.7.3 2016-07-24
4: #if defined(__CUDACC__)
6: #include <petsccuda.h>
7: #include <petsc/private/vecimpl.h>
9: #include <cublas_v2.h>
11: #define WaitForGPU() PetscCUDASynchronize ? cudaThreadSynchronize() : 0
13: struct Vec_CUDA {
14: PetscScalar *GPUarray; /* this always holds the GPU data */
15: cudaStream_t stream; /* A stream for doing asynchronous data transfers */
16: PetscBool hostDataRegisteredAsPageLocked;
17: };
19: #endif
21: #include <cuda_runtime.h>
23: PETSC_INTERN PetscErrorCode VecDotNorm2_SeqCUDA(Vec,Vec,PetscScalar*, PetscScalar*);
24: PETSC_INTERN PetscErrorCode VecPointwiseDivide_SeqCUDA(Vec,Vec,Vec);
25: PETSC_INTERN PetscErrorCode VecWAXPY_SeqCUDA(Vec,PetscScalar,Vec,Vec);
26: PETSC_INTERN PetscErrorCode VecMDot_SeqCUDA(Vec,PetscInt,const Vec[],PetscScalar*);
27: PETSC_INTERN PetscErrorCode VecSet_SeqCUDA(Vec,PetscScalar);
28: PETSC_INTERN PetscErrorCode VecMAXPY_SeqCUDA(Vec,PetscInt,const PetscScalar*,Vec*);
29: PETSC_INTERN PetscErrorCode VecAXPBYPCZ_SeqCUDA(Vec,PetscScalar,PetscScalar,PetscScalar,Vec,Vec);
30: PETSC_INTERN PetscErrorCode VecPointwiseMult_SeqCUDA(Vec,Vec,Vec);
31: PETSC_INTERN PetscErrorCode VecPlaceArray_SeqCUDA(Vec,const PetscScalar*);
32: PETSC_INTERN PetscErrorCode VecResetArray_SeqCUDA(Vec);
33: PETSC_INTERN PetscErrorCode VecReplaceArray_SeqCUDA(Vec,const PetscScalar*);
34: PETSC_INTERN PetscErrorCode VecDot_SeqCUDA(Vec,Vec,PetscScalar*);
35: PETSC_INTERN PetscErrorCode VecTDot_SeqCUDA(Vec,Vec,PetscScalar*);
36: PETSC_INTERN PetscErrorCode VecScale_SeqCUDA(Vec,PetscScalar);
37: PETSC_EXTERN PetscErrorCode VecCopy_SeqCUDA(Vec,Vec);
38: PETSC_INTERN PetscErrorCode VecSwap_SeqCUDA(Vec,Vec);
39: PETSC_INTERN PetscErrorCode VecAXPY_SeqCUDA(Vec,PetscScalar,Vec);
40: PETSC_INTERN PetscErrorCode VecAXPBY_SeqCUDA(Vec,PetscScalar,PetscScalar,Vec);
41: PETSC_INTERN PetscErrorCode VecDuplicate_SeqCUDA(Vec,Vec*);
42: PETSC_INTERN PetscErrorCode VecConjugate_SeqCUDA(Vec xin);
43: PETSC_INTERN PetscErrorCode VecNorm_SeqCUDA(Vec,NormType,PetscReal*);
44: PETSC_INTERN PetscErrorCode VecCUDACopyToGPU(Vec);
45: PETSC_INTERN PetscErrorCode VecCUDAAllocateCheck(Vec);
46: PETSC_EXTERN PetscErrorCode VecCreate_SeqCUDA(Vec);
47: PETSC_INTERN PetscErrorCode VecDestroy_SeqCUDA(Vec);
48: PETSC_INTERN PetscErrorCode VecAYPX_SeqCUDA(Vec,PetscScalar,Vec);
49: PETSC_INTERN PetscErrorCode VecSetRandom_SeqCUDA(Vec,PetscRandom);
50: PETSC_INTERN PetscErrorCode VecGetLocalVector_SeqCUDA(Vec,Vec);
51: PETSC_INTERN PetscErrorCode VecRestoreLocalVector_SeqCUDA(Vec,Vec);
52: PETSC_INTERN PetscErrorCode VecCopy_SeqCUDA_Private(Vec xin,Vec yin);
53: PETSC_INTERN PetscErrorCode VecSetRandom_SeqCUDA_Private(Vec xin,PetscRandom r);
54: PETSC_INTERN PetscErrorCode VecDestroy_SeqCUDA_Private(Vec v);
55: PETSC_INTERN PetscErrorCode VecResetArray_SeqCUDA_Private(Vec vin);
56: PETSC_INTERN PetscErrorCode VecCUDACopyToGPU_Public(Vec);
57: PETSC_INTERN PetscErrorCode VecCUDAAllocateCheck_Public(Vec);
58: PETSC_INTERN PetscErrorCode VecCUDACopyToGPUSome(Vec v, PetscCUDAIndices ci);
59: PETSC_INTERN PetscErrorCode VecCUDACopyFromGPUSome(Vec v, PetscCUDAIndices ci);
61: PETSC_INTERN PetscErrorCode VecScatterCUDAIndicesCreate_PtoP(PetscInt, PetscInt*,PetscInt, PetscInt*,PetscCUDAIndices*);
62: PETSC_INTERN PetscErrorCode VecScatterCUDAIndicesCreate_StoS(PetscInt,PetscInt,PetscInt,PetscInt,PetscInt,PetscInt*,PetscInt*,PetscCUDAIndices*);
63: PETSC_INTERN PetscErrorCode VecScatterCUDAIndicesDestroy(PetscCUDAIndices*);
64: PETSC_INTERN PetscErrorCode VecScatterCUDA_StoS(Vec,Vec,PetscCUDAIndices,InsertMode,ScatterMode);
66: typedef enum {VEC_SCATTER_CUDA_STOS, VEC_SCATTER_CUDA_PTOP} VecCUDAScatterType;
67: typedef enum {VEC_SCATTER_CUDA_GENERAL, VEC_SCATTER_CUDA_STRIDED} VecCUDASequentialScatterMode;
69: struct _p_VecScatterCUDAIndices_PtoP {
70: PetscInt ns;
71: PetscInt sendLowestIndex;
72: PetscInt nr;
73: PetscInt recvLowestIndex;
74: };
76: struct _p_VecScatterCUDAIndices_StoS {
77: /* from indices data */
78: PetscInt *fslots;
79: PetscInt fromFirst;
80: PetscInt fromStep;
81: VecCUDASequentialScatterMode fromMode;
83: /* to indices data */
84: PetscInt *tslots;
85: PetscInt toFirst;
86: PetscInt toStep;
87: VecCUDASequentialScatterMode toMode;
89: PetscInt n;
90: PetscInt MAX_BLOCKS;
91: PetscInt MAX_CORESIDENT_THREADS;
92: cudaStream_t stream;
93: };
95: struct _p_PetscCUDAIndices {
96: void * scatter;
97: VecCUDAScatterType scatterType;
98: };
100: /* complex single */
101: #if defined(PETSC_USE_COMPLEX)
102: #if defined(PETSC_USE_REAL_SINGLE)
103: #define cublasXaxpy(a,b,c,d,e,f,g) cublasCaxpy((a),(b),(cuComplex*)(c),(cuComplex*)(d),(e),(cuComplex*)(f),(g))
104: #define cublasXscal(a,b,c,d,e) cublasCscal((a),(b),(cuComplex*)(c),(cuComplex*)(d),(e))
105: #define cublasXdotu(a,b,c,d,e,f,g) cublasCdotu((a),(b),(cuComplex*)(c),(d),(cuComplex*)(e),(f),(cuComplex*)(g))
106: #define cublasXdot(a,b,c,d,e,f,g) cublasCdotc((a),(b),(cuComplex*)(c),(d),(cuComplex*)(e),(f),(cuComplex*)(g))
107: #define cublasXswap(a,b,c,d,e,f) cublasCswap((a),(b),(cuComplex*)(c),(d),(cuComplex*)(e),(f))
108: #define cublasXnrm2(a,b,c,d,e) cublasScnrm2((a),(b),(cuComplex*)(c),(d),(e))
109: #define cublasIXamax(a,b,c,d,e) cublasIcamax((a),(b),(cuComplex*)(c),(d),(e))
110: #define cublasXasum(a,b,c,d,e) cublasScasum((a),(b),(cuComplex*)(c),(d),(e))
111: #else /* complex double */
112: #define cublasXaxpy(a,b,c,d,e,f,g) cublasZaxpy((a),(b),(cuDoubleComplex*)(c),(cuDoubleComplex*)(d),(e),(cuDoubleComplex*)(f),(g))
113: #define cublasXscal(a,b,c,d,e) cublasZscal((a),(b),(cuDoubleComplex*)(c),(cuDoubleComplex*)(d),(e))
114: #define cublasXdotu(a,b,c,d,e,f,g) cublasZdotu((a),(b),(cuDoubleComplex*)(c),(d),(cuDoubleComplex*)(e),(f),(cuDoubleComplex*)(g))
115: #define cublasXdot(a,b,c,d,e,f,g) cublasZdotc((a),(b),(cuDoubleComplex*)(c),(d),(cuDoubleComplex*)(e),(f),(cuDoubleComplex*)(g))
116: #define cublasXswap(a,b,c,d,e,f) cublasZswap((a),(b),(cuDoubleComplex*)(c),(d),(cuDoubleComplex*)(e),(f))
117: #define cublasXnrm2(a,b,c,d,e) cublasDznrm2((a),(b),(cuDoubleComplex*)(c),(d),(e))
118: #define cublasIXamax(a,b,c,d,e) cublasIzamax((a),(b),(cuDoubleComplex*)(c),(d),(e))
119: #define cublasXasum(a,b,c,d,e) cublasDzasum((a),(b),(cuDoubleComplex*)(c),(d),(e))
120: #endif
121: #else /* real single */
122: #if defined(PETSC_USE_REAL_SINGLE)
123: #define cublasXaxpy cublasSaxpy
124: #define cublasXscal cublasSscal
125: #define cublasXdotu cublasSdot
126: #define cublasXdot cublasSdot
127: #define cublasXswap cublasSswap
128: #define cublasXnrm2 cublasSnrm2
129: #define cublasIXamax cublasIsamax
130: #define cublasXasum cublasSasum
131: #else /* real double */
132: #define cublasXaxpy cublasDaxpy
133: #define cublasXscal cublasDscal
134: #define cublasXdotu cublasDdot
135: #define cublasXdot cublasDdot
136: #define cublasXswap cublasDswap
137: #define cublasXnrm2 cublasDnrm2
138: #define cublasIXamax cublasIdamax
139: #define cublasXasum cublasDasum
140: #endif
141: #endif
143: #endif