Actual source code: cudavecimpl.h

petsc-master 2020-04-04
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  4:  #include <petscvec.h>
  5:  #include <petsccublas.h>
  6:  #include <petsc/private/vecimpl.h>

  8: #include <cublas_v2.h>

 10: typedef struct {
 11:   PetscScalar  *GPUarray;           /* this always holds the GPU data */
 12:   PetscScalar  *GPUarray_allocated; /* if the array was allocated by PETSc this is its pointer */
 13:   cudaStream_t stream;              /* A stream for doing asynchronous data transfers */
 14: } Vec_CUDA;

 16: #include <cuda_runtime.h>

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

 62: PETSC_INTERN PetscErrorCode VecScatterCUDAIndicesCreate_PtoP(PetscInt, PetscInt*,PetscInt, PetscInt*,PetscCUDAIndices*);
 63: PETSC_INTERN PetscErrorCode VecScatterCUDAIndicesCreate_StoS(PetscInt,PetscInt,PetscInt,PetscInt,PetscInt,PetscInt*,PetscInt*,PetscCUDAIndices*);
 64: PETSC_INTERN PetscErrorCode VecScatterCUDAIndicesDestroy(PetscCUDAIndices*);
 65: PETSC_INTERN PetscErrorCode VecScatterCUDA_StoS(Vec,Vec,PetscCUDAIndices,InsertMode,ScatterMode);

 67: typedef enum {VEC_SCATTER_CUDA_STOS, VEC_SCATTER_CUDA_PTOP} VecCUDAScatterType;
 68: typedef enum {VEC_SCATTER_CUDA_GENERAL, VEC_SCATTER_CUDA_STRIDED} VecCUDASequentialScatterMode;

 70: struct  _p_VecScatterCUDAIndices_PtoP {
 71:   PetscInt ns;
 72:   PetscInt sendLowestIndex;
 73:   PetscInt nr;
 74:   PetscInt recvLowestIndex;
 75: };

 77: struct  _p_VecScatterCUDAIndices_StoS {
 78:   /* from indices data */
 79:   PetscInt *fslots;
 80:   PetscInt fromFirst;
 81:   PetscInt fromStep;
 82:   VecCUDASequentialScatterMode fromMode;

 84:   /* to indices data */
 85:   PetscInt *tslots;
 86:   PetscInt toFirst;
 87:   PetscInt toStep;
 88:   VecCUDASequentialScatterMode toMode;

 90:   PetscInt n;
 91:   PetscInt MAX_BLOCKS;
 92:   PetscInt MAX_CORESIDENT_THREADS;
 93:   cudaStream_t stream;
 94: };

 96: struct  _p_PetscCUDAIndices {
 97:   void * scatter;
 98:   VecCUDAScatterType scatterType;
 99: };

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

152: #endif