Actual source code: cudavecimpl.h

petsc-master 2019-09-20
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  4: #if defined(__CUDACC__)

  6:  #include <petsccuda.h>
  7:  #include <petsc/private/vecimpl.h>

  9: #include <cublas_v2.h>

 11: #define WaitForGPU() PetscCUDASynchronize ? cudaDeviceSynchronize() : 0

 13: #endif

 15: typedef struct {
 16:   PetscScalar  *GPUarray;           /* this always holds the GPU data */
 17:   PetscScalar  *GPUarray_allocated; /* if the array was allocated by PETSc this is its pointer */
 18:   cudaStream_t stream;              /* A stream for doing asynchronous data transfers */
 19:   PetscBool    hostDataRegisteredAsPageLocked;
 20: } Vec_CUDA;


 23: #include <cuda_runtime.h>

 25: PETSC_INTERN PetscErrorCode VecDotNorm2_SeqCUDA(Vec,Vec,PetscScalar*, PetscScalar*);
 26: PETSC_INTERN PetscErrorCode VecPointwiseDivide_SeqCUDA(Vec,Vec,Vec);
 27: PETSC_INTERN PetscErrorCode VecWAXPY_SeqCUDA(Vec,PetscScalar,Vec,Vec);
 28: PETSC_INTERN PetscErrorCode VecMDot_SeqCUDA(Vec,PetscInt,const Vec[],PetscScalar*);
 29: PETSC_INTERN PetscErrorCode VecSet_SeqCUDA(Vec,PetscScalar);
 30: PETSC_INTERN PetscErrorCode VecMAXPY_SeqCUDA(Vec,PetscInt,const PetscScalar*,Vec*);
 31: PETSC_INTERN PetscErrorCode VecAXPBYPCZ_SeqCUDA(Vec,PetscScalar,PetscScalar,PetscScalar,Vec,Vec);
 32: PETSC_INTERN PetscErrorCode VecPointwiseMult_SeqCUDA(Vec,Vec,Vec);
 33: PETSC_INTERN PetscErrorCode VecPlaceArray_SeqCUDA(Vec,const PetscScalar*);
 34: PETSC_INTERN PetscErrorCode VecResetArray_SeqCUDA(Vec);
 35: PETSC_INTERN PetscErrorCode VecReplaceArray_SeqCUDA(Vec,const PetscScalar*);
 36: PETSC_INTERN PetscErrorCode VecDot_SeqCUDA(Vec,Vec,PetscScalar*);
 37: PETSC_INTERN PetscErrorCode VecTDot_SeqCUDA(Vec,Vec,PetscScalar*);
 38: PETSC_INTERN PetscErrorCode VecScale_SeqCUDA(Vec,PetscScalar);
 39: PETSC_EXTERN PetscErrorCode VecCopy_SeqCUDA(Vec,Vec);
 40: PETSC_INTERN PetscErrorCode VecSwap_SeqCUDA(Vec,Vec);
 41: PETSC_EXTERN PetscErrorCode VecAXPY_SeqCUDA(Vec,PetscScalar,Vec);
 42: PETSC_INTERN PetscErrorCode VecAXPBY_SeqCUDA(Vec,PetscScalar,PetscScalar,Vec);
 43: PETSC_INTERN PetscErrorCode VecDuplicate_SeqCUDA(Vec,Vec*);
 44: PETSC_INTERN PetscErrorCode VecConjugate_SeqCUDA(Vec xin);
 45: PETSC_INTERN PetscErrorCode VecNorm_SeqCUDA(Vec,NormType,PetscReal*);
 46: PETSC_INTERN PetscErrorCode VecCUDACopyToGPU(Vec);
 47: PETSC_INTERN PetscErrorCode VecCUDAAllocateCheck(Vec);
 48: PETSC_EXTERN PetscErrorCode VecCreate_SeqCUDA(Vec);
 49: PETSC_INTERN PetscErrorCode VecCreate_SeqCUDA_Private(Vec,const PetscScalar*);
 50: PETSC_INTERN PetscErrorCode VecCreate_MPICUDA(Vec);
 51: PETSC_INTERN PetscErrorCode VecCreate_MPICUDA_Private(Vec,PetscBool,PetscInt,const PetscScalar*);
 52: PETSC_INTERN PetscErrorCode VecCreate_CUDA(Vec);
 53: PETSC_INTERN PetscErrorCode VecDestroy_SeqCUDA(Vec);
 54: PETSC_INTERN PetscErrorCode VecDestroy_MPICUDA(Vec);
 55: PETSC_INTERN PetscErrorCode VecAYPX_SeqCUDA(Vec,PetscScalar,Vec);
 56: PETSC_INTERN PetscErrorCode VecSetRandom_SeqCUDA(Vec,PetscRandom);
 57: PETSC_INTERN PetscErrorCode VecGetLocalVector_SeqCUDA(Vec,Vec);
 58: PETSC_INTERN PetscErrorCode VecRestoreLocalVector_SeqCUDA(Vec,Vec);
 59: PETSC_INTERN PetscErrorCode VecCopy_SeqCUDA_Private(Vec xin,Vec yin);
 60: PETSC_INTERN PetscErrorCode VecSetRandom_SeqCUDA_Private(Vec xin,PetscRandom r);
 61: PETSC_INTERN PetscErrorCode VecDestroy_SeqCUDA_Private(Vec v);
 62: PETSC_INTERN PetscErrorCode VecResetArray_SeqCUDA_Private(Vec vin);
 63: PETSC_INTERN PetscErrorCode VecCUDACopyToGPU_Public(Vec);
 64: PETSC_INTERN PetscErrorCode VecCUDAAllocateCheck_Public(Vec);
 65: PETSC_INTERN PetscErrorCode VecCUDACopyToGPUSome(Vec,PetscCUDAIndices,ScatterMode);
 66: PETSC_INTERN PetscErrorCode VecCUDACopyFromGPUSome(Vec,PetscCUDAIndices,ScatterMode);

 68: PETSC_INTERN PetscErrorCode VecScatterCUDAIndicesCreate_PtoP(PetscInt, PetscInt*,PetscInt, PetscInt*,PetscCUDAIndices*);
 69: PETSC_INTERN PetscErrorCode VecScatterCUDAIndicesCreate_StoS(PetscInt,PetscInt,PetscInt,PetscInt,PetscInt,PetscInt*,PetscInt*,PetscCUDAIndices*);
 70: PETSC_INTERN PetscErrorCode VecScatterCUDAIndicesDestroy(PetscCUDAIndices*);
 71: PETSC_INTERN PetscErrorCode VecScatterCUDA_StoS(Vec,Vec,PetscCUDAIndices,InsertMode,ScatterMode);

 73: typedef enum {VEC_SCATTER_CUDA_STOS, VEC_SCATTER_CUDA_PTOP} VecCUDAScatterType;
 74: typedef enum {VEC_SCATTER_CUDA_GENERAL, VEC_SCATTER_CUDA_STRIDED} VecCUDASequentialScatterMode;

 76: struct  _p_VecScatterCUDAIndices_PtoP {
 77:   PetscInt ns;
 78:   PetscInt sendLowestIndex;
 79:   PetscInt nr;
 80:   PetscInt recvLowestIndex;
 81: };

 83: struct  _p_VecScatterCUDAIndices_StoS {
 84:   /* from indices data */
 85:   PetscInt *fslots;
 86:   PetscInt fromFirst;
 87:   PetscInt fromStep;
 88:   VecCUDASequentialScatterMode fromMode;

 90:   /* to indices data */
 91:   PetscInt *tslots;
 92:   PetscInt toFirst;
 93:   PetscInt toStep;
 94:   VecCUDASequentialScatterMode toMode;

 96:   PetscInt n;
 97:   PetscInt MAX_BLOCKS;
 98:   PetscInt MAX_CORESIDENT_THREADS;
 99:   cudaStream_t stream;
100: };

102: struct  _p_PetscCUDAIndices {
103:   void * scatter;
104:   VecCUDAScatterType scatterType;
105: };

107: /* complex single */
108: #if defined(PETSC_USE_COMPLEX)
109: #if defined(PETSC_USE_REAL_SINGLE)
110: #define cublasXaxpy(a,b,c,d,e,f,g) cublasCaxpy((a),(b),(cuComplex*)(c),(cuComplex*)(d),(e),(cuComplex*)(f),(g))
111: #define cublasXscal(a,b,c,d,e)     cublasCscal((a),(b),(cuComplex*)(c),(cuComplex*)(d),(e))
112: #define cublasXdotu(a,b,c,d,e,f,g) cublasCdotu((a),(b),(cuComplex*)(c),(d),(cuComplex*)(e),(f),(cuComplex*)(g))
113: #define cublasXdot(a,b,c,d,e,f,g)  cublasCdotc((a),(b),(cuComplex*)(c),(d),(cuComplex*)(e),(f),(cuComplex*)(g))
114: #define cublasXswap(a,b,c,d,e,f)   cublasCswap((a),(b),(cuComplex*)(c),(d),(cuComplex*)(e),(f))
115: #define cublasXnrm2(a,b,c,d,e)     cublasScnrm2((a),(b),(cuComplex*)(c),(d),(e))
116: #define cublasIXamax(a,b,c,d,e)    cublasIcamax((a),(b),(cuComplex*)(c),(d),(e))
117: #define cublasXasum(a,b,c,d,e)     cublasScasum((a),(b),(cuComplex*)(c),(d),(e))
118: #define cublasXgemv(a,b,c,d,e,f,g,h,i,j,k,l) cublasCgemv((a),(b),(c),(d),(cuComplex*)(e),(cuComplex*)(f),(g),(cuComplex*)(h),(i),(cuComplex*)(j),(cuComplex*)(k),(l))
119: #define cublasXgemm(a,b,c,d,e,f,g,h,i,j,k,l,m,n) cublasCgemm((a),(b),(c),(d),(e),(f),(cuComplex*)(g),(cuComplex*)(h),(i),(cuComplex*)(j),(k),(cuComplex*)(l),(cuComplex*)(m),(n))
120: #else /* complex double */
121: #define cublasXaxpy(a,b,c,d,e,f,g) cublasZaxpy((a),(b),(cuDoubleComplex*)(c),(cuDoubleComplex*)(d),(e),(cuDoubleComplex*)(f),(g))
122: #define cublasXscal(a,b,c,d,e)     cublasZscal((a),(b),(cuDoubleComplex*)(c),(cuDoubleComplex*)(d),(e))
123: #define cublasXdotu(a,b,c,d,e,f,g) cublasZdotu((a),(b),(cuDoubleComplex*)(c),(d),(cuDoubleComplex*)(e),(f),(cuDoubleComplex*)(g))
124: #define cublasXdot(a,b,c,d,e,f,g)  cublasZdotc((a),(b),(cuDoubleComplex*)(c),(d),(cuDoubleComplex*)(e),(f),(cuDoubleComplex*)(g))
125: #define cublasXswap(a,b,c,d,e,f)   cublasZswap((a),(b),(cuDoubleComplex*)(c),(d),(cuDoubleComplex*)(e),(f))
126: #define cublasXnrm2(a,b,c,d,e)     cublasDznrm2((a),(b),(cuDoubleComplex*)(c),(d),(e))
127: #define cublasIXamax(a,b,c,d,e)    cublasIzamax((a),(b),(cuDoubleComplex*)(c),(d),(e))
128: #define cublasXasum(a,b,c,d,e)     cublasDzasum((a),(b),(cuDoubleComplex*)(c),(d),(e))
129: #define cublasXgemv(a,b,c,d,e,f,g,h,i,j,k,l) cublasZgemv((a),(b),(c),(d),(cuDoubleComplex*)(e),(cuDoubleComplex*)(f),(g),(cuDoubleComplex*)(h),(i),(cuDoubleComplex*)(j),(cuDoubleComplex*)(k),(l))
130: #define cublasXgemm(a,b,c,d,e,f,g,h,i,j,k,l,m,n) cublasZgemm((a),(b),(c),(d),(e),(f),(cuDoubleComplex*)(g),(cuDoubleComplex*)(h),(i),(cuDoubleComplex*)(j),(k),(cuDoubleComplex*)(l),(cuDoubleComplex*)(m),(n))
131: #endif
132: #else /* real single */
133: #if defined(PETSC_USE_REAL_SINGLE)
134: #define cublasXaxpy  cublasSaxpy
135: #define cublasXscal  cublasSscal
136: #define cublasXdotu  cublasSdot
137: #define cublasXdot   cublasSdot
138: #define cublasXswap  cublasSswap
139: #define cublasXnrm2  cublasSnrm2
140: #define cublasIXamax cublasIsamax
141: #define cublasXasum  cublasSasum
142: #define cublasXgemv  cublasSgemv
143: #define cublasXgemm  cublasSgemm
144: #else /* real double */
145: #define cublasXaxpy  cublasDaxpy
146: #define cublasXscal  cublasDscal
147: #define cublasXdotu  cublasDdot
148: #define cublasXdot   cublasDdot
149: #define cublasXswap  cublasDswap
150: #define cublasXnrm2  cublasDnrm2
151: #define cublasIXamax cublasIdamax
152: #define cublasXasum  cublasDasum
153: #define cublasXgemv  cublasDgemv
154: #define cublasXgemm  cublasDgemm
155: #endif
156: #endif

158: #endif