1 /* 2 This provides a few of the MPI-uni functions that cannot be implemented 3 with C macros 4 */ 5 #include "include/mpiuni/mpi.h" 6 #include "petsc.h" 7 8 #if defined(PETSC_HAVE_STDLIB_H) 9 #include <stdlib.h> 10 #endif 11 12 #define MPI_SUCCESS 0 13 #define MPI_FAILURE 1 14 void *MPIUNI_TMP = 0; 15 int MPIUNI_DATASIZE[5] = { sizeof(int),sizeof(float),sizeof(double),2*sizeof(double),sizeof(char)}; 16 /* 17 With MPI Uni there is only one communicator, which is called 1. 18 */ 19 #define MAX_ATTR 128 20 21 typedef struct { 22 void *extra_state; 23 void *attribute_val; 24 int active; 25 MPI_Delete_function *del; 26 } MPI_Attr; 27 28 static MPI_Attr attr[MAX_ATTR]; 29 static int num_attr = 1,mpi_tag_ub = 100000000; 30 31 #if defined(__cplusplus) 32 extern "C" { 33 #endif 34 35 /* 36 To avoid problems with prototypes to the system memcpy() it is duplicated here 37 */ 38 int MPIUNI_Memcpy(void *a,const void* b,int n) { 39 int i; 40 char *aa= (char*)a; 41 char *bb= (char*)b; 42 43 for (i=0; i<n; i++) aa[i] = bb[i]; 44 return 0; 45 } 46 47 /* 48 Used to set the built-in MPI_TAG_UB attribute 49 */ 50 static int Keyval_setup(void) 51 { 52 attr[0].active = 1; 53 attr[0].attribute_val = &mpi_tag_ub; 54 return 0; 55 } 56 57 /* 58 These functions are mapped to the Petsc_ name by ./mpi.h 59 */ 60 int Petsc_MPI_Keyval_create(MPI_Copy_function *copy_fn,MPI_Delete_function *delete_fn,int *keyval,void *extra_state) 61 { 62 if (num_attr >= MAX_ATTR) MPI_Abort(MPI_COMM_WORLD,1); 63 64 attr[num_attr].extra_state = extra_state; 65 attr[num_attr].del = delete_fn; 66 *keyval = num_attr++; 67 return 0; 68 } 69 70 int Petsc_MPI_Keyval_free(int *keyval) 71 { 72 attr[*keyval].active = 0; 73 return MPI_SUCCESS; 74 } 75 76 int Petsc_MPI_Attr_put(MPI_Comm comm,int keyval,void *attribute_val) 77 { 78 attr[keyval].active = 1; 79 attr[keyval].attribute_val = attribute_val; 80 return MPI_SUCCESS; 81 } 82 83 int Petsc_MPI_Attr_delete(MPI_Comm comm,int keyval) 84 { 85 if (attr[keyval].active && attr[keyval].del) { 86 (*(attr[keyval].del))(comm,keyval,attr[keyval].attribute_val,attr[keyval].extra_state); 87 } 88 attr[keyval].active = 0; 89 attr[keyval].attribute_val = 0; 90 return MPI_SUCCESS; 91 } 92 93 int Petsc_MPI_Attr_get(MPI_Comm comm,int keyval,void *attribute_val,int *flag) 94 { 95 if (!keyval) Keyval_setup(); 96 *flag = attr[keyval].active; 97 *(void **)attribute_val = attr[keyval].attribute_val; 98 return MPI_SUCCESS; 99 } 100 101 static int dups = 0; 102 int Petsc_MPI_Comm_dup(MPI_Comm comm,MPI_Comm *out) 103 { 104 *out = comm; 105 dups++; 106 return 0; 107 } 108 109 int Petsc_MPI_Comm_free(MPI_Comm *comm) 110 { 111 int i; 112 113 if (--dups) return MPI_SUCCESS; 114 for (i=0; i<num_attr; i++) { 115 if (attr[i].active && attr[i].del) { 116 (*attr[i].del)(*comm,i,attr[i].attribute_val,attr[i].extra_state); 117 } 118 attr[i].active = 0; 119 } 120 return MPI_SUCCESS; 121 } 122 123 int Petsc_MPI_Abort(MPI_Comm comm,int errorcode) 124 { 125 abort(); 126 return MPI_SUCCESS; 127 } 128 129 /* --------------------------------------------------------------------------*/ 130 131 static int MPI_was_initialized = 0; 132 static int MPI_was_finalized = 0; 133 134 int Petsc_MPI_Init(int *argc, char ***argv) 135 { 136 MPI_was_initialized = 1; 137 return 0; 138 } 139 140 int Petsc_MPI_Finalize(void) 141 { 142 MPI_was_finalized = 1; 143 return 0; 144 } 145 146 int Petsc_MPI_Initialized(int *flag) 147 { 148 *flag = MPI_was_initialized; 149 return 0; 150 } 151 152 int Petsc_MPI_Finalized(int *flag) 153 { 154 *flag = MPI_was_finalized; 155 return 0; 156 } 157 158 /* ------------------- Fortran versions of several routines ------------------ */ 159 160 #if defined(PETSC_HAVE_FORTRAN_CAPS) 161 #define mpi_init_ MPI_INIT 162 #define mpi_finalize_ MPI_FINALIZE 163 #define mpi_comm_size_ MPI_COMM_SIZE 164 #define mpi_comm_rank_ MPI_COMM_RANK 165 #define mpi_abort_ MPI_ABORT 166 #define mpi_allreduce_ MPI_ALLREDUCE 167 #define mpi_barrier_ MPI_BARRIER 168 #define mpi_bcast_ MPI_BCAST 169 #define mpi_gather_ MPI_GATHER 170 #define mpi_allgather_ MPI_ALLGATHER 171 #define mpi_comm_split_ MPI_COMM_SPLIT 172 #elif !defined(PETSC_HAVE_FORTRAN_UNDERSCORE) 173 #define mpi_init_ mpi_init 174 #define mpi_finalize_ mpi_finalize 175 #define mpi_comm_size_ mpi_comm_size 176 #define mpi_comm_rank_ mpi_comm_rank 177 #define mpi_abort_ mpi_abort 178 #define mpi_allreduce_ mpi_allreduce 179 #define mpi_barrier_ mpi_barrier 180 #define mpi_bcast_ mpi_bcast 181 #define mpi_gather_ mpi_gather 182 #define mpi_allgather_ mpi_allgather 183 #define mpi_comm_split_ mpi_comm_split 184 #endif 185 186 #if defined(PETSC_HAVE_FORTRAN_UNDERSCORE_UNDERSCORE) 187 #define mpi_init_ mpi_init__ 188 #define mpi_finalize_ mpi_finalize__ 189 #define mpi_comm_size_ mpi_comm_size__ 190 #define mpi_comm_rank_ mpi_comm_rank__ 191 #define mpi_abort_ mpi_abort__ 192 #define mpi_allreduce_ mpi_allreduce__ 193 #define mpi_barrier_ mpi_barrier__ 194 #define mpi_bcast_ mpi_bcast__ 195 #define mpi_gather_ mpi_gather__ 196 #define mpi_allgather_ mpi_allgather__ 197 #define mpi_comm_split_ mpi_comm_split__ 198 #endif 199 200 void PETSC_STDCALL mpi_init_(int *ierr) 201 { 202 MPI_was_initialized = 1; 203 *ierr = MPI_SUCCESS; 204 } 205 206 void PETSC_STDCALL mpi_finalize_(int *ierr) 207 { 208 MPI_was_finalized = 1; 209 *ierr = MPI_SUCCESS; 210 } 211 212 void PETSC_STDCALL mpi_comm_size_(MPI_Comm *comm,int *size,int *ierr) 213 { 214 *size = 1; 215 *ierr = 0; 216 } 217 218 void PETSC_STDCALL mpi_comm_rank_(MPI_Comm *comm,int *rank,int *ierr) 219 { 220 *rank=0; 221 *ierr=MPI_SUCCESS; 222 } 223 224 void PETSC_STDCALL mpi_comm_split_(MPI_Comm *comm,int *color,int *key, MPI_Comm *newcomm, int *ierr) 225 { 226 *newcomm = *comm; 227 *ierr=MPI_SUCCESS; 228 } 229 230 void PETSC_STDCALL mpi_abort_(MPI_Comm *comm,int *errorcode,int *ierr) 231 { 232 abort(); 233 *ierr = MPI_SUCCESS; 234 } 235 236 void PETSC_STDCALL mpi_allreduce_(void *sendbuf,void *recvbuf,int *count,int *datatype,int *op,int *comm,int *ierr) 237 { 238 MPIUNI_Memcpy(recvbuf,sendbuf,(*count)*MPIUNI_DATASIZE[*datatype]); 239 *ierr = MPI_SUCCESS; 240 } 241 242 void PETSC_STDCALL mpi_barrier_(MPI_Comm *comm,int *ierr) 243 { 244 *ierr = MPI_SUCCESS; 245 } 246 247 void PETSC_STDCALL mpi_bcast_(void *buf,int *count,int *datatype,int *root,int *comm,int *ierr) 248 { 249 *ierr = MPI_SUCCESS; 250 } 251 252 253 void PETSC_STDCALL mpi_gather_(void *sendbuf,int *scount,int *sdatatype, void* recvbuf, int* rcount, int* rdatatype, int *root,int *comm,int *ierr) 254 { 255 MPIUNI_Memcpy(recvbuf,sendbuf,(*scount)*MPIUNI_DATASIZE[*sdatatype]); 256 *ierr = MPI_SUCCESS; 257 } 258 259 260 void PETSC_STDCALL mpi_allgather_(void *sendbuf,int *scount,int *sdatatype, void* recvbuf, int* rcount, int* rdatatype,int *comm,int *ierr) 261 { 262 MPIUNI_Memcpy(recvbuf,sendbuf,(*scount)*MPIUNI_DATASIZE[*sdatatype]); 263 *ierr = MPI_SUCCESS; 264 } 265 266 #if defined(__cplusplus) 267 } 268 #endif 269 270 271