Révision 126
| Pi/C/MPI/Makefile (revision 126) | ||
|---|---|---|
| 5 | 5 |
MARSAGLIA=SHR3 CONG MWC KISS |
| 6 | 6 |
|
| 7 | 7 |
CC=mpicc.openmpi |
| 8 |
CFLAGS=-Wall -O3 -std=c99 |
|
| 8 |
CFLAGS=-Wall -Wno-unused-variable -Wno-sequence-point -O3 -std=c99
|
|
| 9 | 9 |
LIBRARY=-lm |
| 10 | 10 |
|
| 11 | 11 |
all: $(SOURCE) |
| Pi/C/MPI/Pi_MPI.c (revision 126) | ||
|---|---|---|
| 12 | 12 |
#include <stdlib.h> |
| 13 | 13 |
#include <limits.h> |
| 14 | 14 |
#include <mpi.h> |
| 15 |
#include <stddef.h> |
|
| 15 | 16 |
|
| 16 |
#ifdef TIME |
|
| 17 | 17 |
#include <sys/time.h> |
| 18 |
#endif |
|
| 19 | 18 |
|
| 20 | 19 |
// Marsaglia RNG very simple implementation |
| 21 | 20 |
#define znew ((z=36969*(z&65535)+(z>>16))<<16) |
| ... | ... | |
| 27 | 26 |
|
| 28 | 27 |
#define MWCfp MWC * 2.328306435454494e-10f |
| 29 | 28 |
#define KISSfp KISS * 2.328306435454494e-10f |
| 29 |
#define SHR3fp SHR3 * 2.328306435454494e-10f |
|
| 30 |
#define CONGfp CONG * 2.328306435454494e-10f |
|
| 30 | 31 |
|
| 31 | 32 |
#define ITERATIONS 1000000000 |
| 32 | 33 |
|
| ... | ... | |
| 36 | 37 |
#define LENGTH int |
| 37 | 38 |
#endif |
| 38 | 39 |
|
| 40 |
typedef struct compute_node {
|
|
| 41 |
LENGTH inside; |
|
| 42 |
long int useconds; |
|
| 43 |
} result; |
|
| 44 |
|
|
| 39 | 45 |
unsigned int rotl(unsigned int value, int shift) {
|
| 40 | 46 |
return (value << shift) | (value >> (sizeof(value) * CHAR_BIT - shift)); |
| 41 | 47 |
} |
| ... | ... | |
| 46 | 52 |
|
| 47 | 53 |
LENGTH MainLoopGlobal(LENGTH iterations,unsigned int seed_w,unsigned int seed_z) |
| 48 | 54 |
{
|
| 55 |
#if defined TCONG |
|
| 56 |
unsigned int jcong=seed_z; |
|
| 57 |
#elif defined TSHR3 |
|
| 58 |
unsigned int jsr=seed_w; |
|
| 59 |
#elif defined TMWC |
|
| 49 | 60 |
unsigned int z=seed_z; |
| 50 | 61 |
unsigned int w=seed_w; |
| 62 |
#elif defined TKISS |
|
| 63 |
unsigned int jcong=seed_z; |
|
| 64 |
unsigned int jsr=seed_w; |
|
| 65 |
unsigned int z=seed_z; |
|
| 66 |
unsigned int w=seed_w; |
|
| 67 |
#endif |
|
| 51 | 68 |
|
| 52 |
LENGTH total=0;
|
|
| 69 |
LENGTH total=0; |
|
| 53 | 70 |
|
| 54 | 71 |
for (LENGTH i=0;i<iterations;i++) {
|
| 55 | 72 |
|
| 56 |
float x=MWCfp ; |
|
| 57 |
float y=MWCfp ; |
|
| 73 |
#if defined TINT32 |
|
| 74 |
#define THEONE 1073741824 |
|
| 75 |
#if defined TCONG |
|
| 76 |
unsigned int x=CONG>>17 ; |
|
| 77 |
unsigned int y=CONG>>17 ; |
|
| 78 |
#elif defined TSHR3 |
|
| 79 |
unsigned int x=SHR3>>17 ; |
|
| 80 |
unsigned int y=SHR3>>17 ; |
|
| 81 |
#elif defined TMWC |
|
| 82 |
unsigned int x=MWC>>17 ; |
|
| 83 |
unsigned int y=MWC>>17 ; |
|
| 84 |
#elif defined TKISS |
|
| 85 |
unsigned int x=KISS>>17 ; |
|
| 86 |
unsigned int y=KISS>>17 ; |
|
| 87 |
#endif |
|
| 88 |
#elif defined TINT64 |
|
| 89 |
#define THEONE 4611686018427387904 |
|
| 90 |
#if defined TCONG |
|
| 91 |
unsigned long x=(unsigned long)(CONG>>1) ; |
|
| 92 |
unsigned long y=(unsigned long)(CONG>>1) ; |
|
| 93 |
#elif defined TSHR3 |
|
| 94 |
unsigned long x=(unsigned long)(SHR3>>1) ; |
|
| 95 |
unsigned long y=(unsigned long)(SHR3>>1) ; |
|
| 96 |
#elif defined TMWC |
|
| 97 |
unsigned long x=(unsigned long)(MWC>>1) ; |
|
| 98 |
unsigned long y=(unsigned long)(MWC>>1) ; |
|
| 99 |
#elif defined TKISS |
|
| 100 |
unsigned long x=(unsigned long)(KISS>>1) ; |
|
| 101 |
unsigned long y=(unsigned long)(KISS>>1) ; |
|
| 102 |
#endif |
|
| 103 |
#elif defined TFP32 |
|
| 104 |
#define THEONE 1.0f |
|
| 105 |
#if defined TCONG |
|
| 106 |
float x=CONGfp ; |
|
| 107 |
float y=CONGfp ; |
|
| 108 |
#elif defined TSHR3 |
|
| 109 |
float x=SHR3fp ; |
|
| 110 |
float y=SHR3fp ; |
|
| 111 |
#elif defined TMWC |
|
| 112 |
float x=MWCfp ; |
|
| 113 |
float y=MWCfp ; |
|
| 114 |
#elif defined TKISS |
|
| 115 |
float x=KISSfp ; |
|
| 116 |
float y=KISSfp ; |
|
| 117 |
#endif |
|
| 118 |
#elif defined TFP64 |
|
| 119 |
#define THEONE 1.0f |
|
| 120 |
#if defined TCONG |
|
| 121 |
double x=(double)CONGfp ; |
|
| 122 |
double y=(double)CONGfp ; |
|
| 123 |
#elif defined TSHR3 |
|
| 124 |
double x=(double)SHR3fp ; |
|
| 125 |
double y=(double)SHR3fp ; |
|
| 126 |
#elif defined TMWC |
|
| 127 |
double x=(double)MWCfp ; |
|
| 128 |
double y=(double)MWCfp ; |
|
| 129 |
#elif defined TKISS |
|
| 130 |
double x=(double)KISSfp ; |
|
| 131 |
double y=(double)KISSfp ; |
|
| 132 |
#endif |
|
| 133 |
#endif |
|
| 58 | 134 |
|
| 59 | 135 |
// Matching test |
| 60 |
int inside=((x*x+y*y) < 1.0f) ? 1:0;
|
|
| 136 |
unsigned long inside=((x*x+y*y) < THEONE) ? 1:0;
|
|
| 61 | 137 |
total+=inside; |
| 62 | 138 |
} |
| 63 |
|
|
| 139 |
|
|
| 64 | 140 |
return(total); |
| 65 |
|
|
| 66 | 141 |
} |
| 67 | 142 |
|
| 68 | 143 |
int main(int argc, char *argv[]) {
|
| 69 | 144 |
|
| 70 | 145 |
unsigned int seed_z=362436069,seed_w=52128862; |
| 71 |
LENGTH iterations=ITERATIONS,inside[1024],insides,part_inside,part_iterations;
|
|
| 146 |
LENGTH iterations=ITERATIONS,inside[8192],insides,part_inside,part_iterations;
|
|
| 72 | 147 |
int numtasks,rank,rc,tag=1,i; |
| 73 | 148 |
float pi; |
| 74 | 149 |
|
| ... | ... | |
| 76 | 151 |
|
| 77 | 152 |
gethostname(hostname, sizeof hostname); |
| 78 | 153 |
|
| 79 |
#ifdef TIME |
|
| 80 | 154 |
struct timeval start,end; |
| 81 | 155 |
long int useconds; |
| 82 |
#endif |
|
| 83 | 156 |
|
| 84 | 157 |
MPI_Status Stat; |
| 85 | 158 |
|
| ... | ... | |
| 92 | 165 |
MPI_Comm_size(MPI_COMM_WORLD,&numtasks); |
| 93 | 166 |
MPI_Comm_rank(MPI_COMM_WORLD,&rank); |
| 94 | 167 |
|
| 168 |
const int nitems=2; |
|
| 169 |
int blocklengths[2] = {1,1};
|
|
| 170 |
|
|
| 171 |
#ifdef LONG |
|
| 172 |
MPI_Datatype types[2] = {MPI_LONG, MPI_LONG};
|
|
| 173 |
#else |
|
| 174 |
MPI_Datatype types[2] = {MPI_INT, MPI_LONG};
|
|
| 175 |
#endif |
|
| 176 |
|
|
| 177 |
MPI_Datatype mpi_result_type; |
|
| 178 |
MPI_Aint offsets[2]; |
|
| 179 |
|
|
| 180 |
offsets[0] = offsetof(result, inside); |
|
| 181 |
offsets[1] = offsetof(result, useconds); |
|
| 182 |
|
|
| 183 |
MPI_Type_create_struct(nitems, blocklengths, offsets, types, &mpi_result_type); |
|
| 184 |
MPI_Type_commit(&mpi_result_type); |
|
| 185 |
|
|
| 95 | 186 |
if (rank==0) {
|
| 96 | 187 |
|
| 97 | 188 |
if (argc > 1) {
|
| ... | ... | |
| 102 | 193 |
printf("\t\t#1 : number of iterations (default 1 billion)\n\n");
|
| 103 | 194 |
} |
| 104 | 195 |
|
| 105 |
printf ("Sizeof int = %lld bytes.\n", (long long)sizeof(int));
|
|
| 106 |
printf ("Sizeof long = %lld bytes.\n", (long long)sizeof(long));
|
|
| 107 |
printf ("Sizeof long long = %lld bytes.\n", (long long)sizeof(long long));
|
|
| 196 |
printf ("\tSizeof int = %lld bytes.\n", (long long)sizeof(int));
|
|
| 197 |
printf ("\tSizeof long = %lld bytes.\n", (long long)sizeof(long));
|
|
| 198 |
printf ("\tSizeof long long = %lld bytes.\n", (long long)sizeof(long long));
|
|
| 108 | 199 |
|
| 109 |
printf ("Max int = %u\n", INT_MAX);
|
|
| 110 |
printf ("Max long = %ld\n", LONG_MAX);
|
|
| 111 |
printf ("Max long long = %lld\n", LLONG_MAX);
|
|
| 200 |
printf ("\tMax int = %u\n", INT_MAX);
|
|
| 201 |
printf ("\tMax long = %ld\n", LONG_MAX);
|
|
| 202 |
printf ("\tMax long long = %lld\n\n", LLONG_MAX);
|
|
| 112 | 203 |
|
| 113 |
part_iterations=iterations/numtasks+1;
|
|
| 204 |
part_iterations=((iterations%numtasks) == 0) ? iterations/numtasks:iterations/numtasks+1 ;
|
|
| 114 | 205 |
|
| 115 | 206 |
// Split part of code |
| 116 | 207 |
for (i=1;i<numtasks;i++) {
|
| ... | ... | |
| 124 | 215 |
#endif |
| 125 | 216 |
} |
| 126 | 217 |
|
| 127 |
#ifdef TIME |
|
| 128 | 218 |
gettimeofday(&start,(struct timezone *)0); |
| 129 |
#endif |
|
| 130 | 219 |
|
| 131 | 220 |
insides=MainLoopGlobal(part_iterations,seed_w,seed_z); |
| 132 | 221 |
|
| 133 |
#ifdef TIME |
|
| 134 | 222 |
gettimeofday(&end,(struct timezone *)0); |
| 135 | 223 |
useconds=(end.tv_sec-start.tv_sec)*1000000+end.tv_usec-start.tv_usec; |
| 136 | 224 |
|
| 137 |
printf("\tOn %s with rank %i, find %lld inside in %lu useconds.\n",
|
|
| 225 |
printf("\tOn %s with rank %i, find %lld inside in %lu useconds.\n",
|
|
| 138 | 226 |
hostname,rank,(long long)insides,useconds); |
| 139 |
#else |
|
| 140 |
printf("\tOn %s with rank %i, find %lld inside\n",hostname,rank,
|
|
| 141 |
(long long)insides); |
|
| 142 | 227 |
|
| 143 |
#endif |
|
| 144 |
|
|
| 145 | 228 |
// Join part of code |
| 146 | 229 |
for (i=1;i<numtasks;i++) {
|
| 147 |
#ifdef LONG |
|
| 148 |
rc = MPI_Recv(&inside[i], 1, MPI_LONG_LONG, i, tag, |
|
| 230 |
|
|
| 231 |
result recv; |
|
| 232 |
|
|
| 233 |
rc = MPI_Recv(&recv, 1, mpi_result_type, i, tag, |
|
| 149 | 234 |
MPI_COMM_WORLD, &Stat); |
| 150 |
#else |
|
| 151 |
rc = MPI_Recv(&inside[i], 1, MPI_INT, i, tag, |
|
| 152 |
MPI_COMM_WORLD, &Stat); |
|
| 153 |
#endif |
|
| 154 |
printf("\tReceive %lu inside from rank %i\n",(unsigned long)inside[i],i);
|
|
| 235 |
|
|
| 236 |
inside[i]=recv.inside; |
|
| 237 |
useconds=recv.useconds; |
|
| 238 |
|
|
| 239 |
printf("\tReceive from %i, find %lld inside in %lu useconds\n",i,(long long)inside[i],useconds);
|
|
| 240 |
|
|
| 155 | 241 |
insides+=inside[i]; |
| 156 | 242 |
} |
| 157 | 243 |
|
| 158 |
pi=4.*(float)insides/(float)((iterations/numtasks)*numtasks);
|
|
| 244 |
pi=4.*(float)insides/(float)(part_iterations*numtasks);
|
|
| 159 | 245 |
|
| 160 | 246 |
printf("\n\tPi=%.40f\n\twith error %.40f\n\twith %lld iterations\n\n",pi,
|
| 161 | 247 |
fabs(pi-4*atan(1.))/pi,(long long)iterations); |
| ... | ... | |
| 172 | 258 |
MPI_COMM_WORLD, &Stat); |
| 173 | 259 |
#endif |
| 174 | 260 |
|
| 175 |
printf("\tOn %s with rank %i, receive from master %lld\n",
|
|
| 176 |
hostname,rank,(long long)part_iterations); |
|
| 261 |
/* Not such a good idea to print information... |
|
| 262 |
printf("\tOn %s with rank %i, receive from master %lld\n",
|
|
| 263 |
hostname,rank,(long long)part_iterations); */ |
|
| 177 | 264 |
|
| 178 |
#ifdef TIME |
|
| 179 | 265 |
gettimeofday(&start,(struct timezone *)0); |
| 180 |
#endif |
|
| 181 | 266 |
|
| 182 | 267 |
part_inside=MainLoopGlobal(part_iterations,rotr(seed_w,rank),rotl(seed_z,rank)); |
| 183 | 268 |
|
| 184 |
|
|
| 185 |
#ifdef TIME |
|
| 186 | 269 |
gettimeofday(&end,(struct timezone *)0); |
| 187 | 270 |
useconds=(end.tv_sec-start.tv_sec)*1000000+end.tv_usec-start.tv_usec; |
| 188 |
|
|
| 271 |
|
|
| 272 |
/* |
|
| 189 | 273 |
printf("\tOn %s with rank %i, find %lld inside in %lu useconds.\n",
|
| 190 | 274 |
hostname,rank,(long long)part_inside,useconds); |
| 191 |
#else |
|
| 192 |
printf("\tOn %s with rank %i, find %lld inside\n",hostname,rank,
|
|
| 193 |
(long long)part_inside); |
|
| 194 |
|
|
| 195 |
#endif |
|
| 196 |
|
|
| 197 |
#ifdef LONG |
|
| 198 |
rc = MPI_Send(&part_inside, 1, MPI_LONG_LONG, 0, tag, MPI_COMM_WORLD); |
|
| 199 |
#else |
|
| 200 |
rc = MPI_Send(&part_inside, 1, MPI_INT, 0, tag, MPI_COMM_WORLD); |
|
| 201 |
#endif |
|
| 275 |
*/ |
|
| 202 | 276 |
|
| 277 |
result send; |
|
| 278 |
send.inside=part_inside; |
|
| 279 |
send.useconds=useconds; |
|
| 280 |
|
|
| 281 |
rc = MPI_Send(&send, 1, mpi_result_type, 0, tag, MPI_COMM_WORLD); |
|
| 282 |
|
|
| 203 | 283 |
} |
| 204 |
|
|
| 284 |
|
|
| 285 |
MPI_Type_free(&mpi_result_type); |
|
| 205 | 286 |
MPI_Finalize(); |
| 206 |
|
|
| 207 | 287 |
} |
| Pi/C/MPI/Pi_aMPI.c (revision 126) | ||
|---|---|---|
| 1 | 1 |
// |
| 2 | 2 |
// Estimation of Pi using Monte Carlo exploration process |
| 3 |
// gcc -std=c99 -O3 -o Pi Pi.c -lm
|
|
| 3 |
// gcc -std=c99 -O3 -o Pi_aMPI Pi_aMPI.c -lm
|
|
| 4 | 4 |
// Emmanuel Quemener <emmanuel.quemener@ens-lyon.fr> |
| 5 | 5 |
|
| 6 | 6 |
// Needed for gethostname |
| ... | ... | |
| 12 | 12 |
#include <stdlib.h> |
| 13 | 13 |
#include <limits.h> |
| 14 | 14 |
#include <mpi.h> |
| 15 |
#include <stddef.h> |
|
| 15 | 16 |
|
| 16 |
#ifdef TIME |
|
| 17 | 17 |
#include <sys/time.h> |
| 18 |
#endif |
|
| 19 | 18 |
|
| 20 | 19 |
// Marsaglia RNG very simple implementation |
| 21 | 20 |
#define znew ((z=36969*(z&65535)+(z>>16))<<16) |
| ... | ... | |
| 38 | 37 |
#define LENGTH int |
| 39 | 38 |
#endif |
| 40 | 39 |
|
| 40 |
typedef struct compute_node {
|
|
| 41 |
LENGTH inside; |
|
| 42 |
long int useconds; |
|
| 43 |
} result; |
|
| 44 |
|
|
| 41 | 45 |
unsigned int rotl(unsigned int value, int shift) {
|
| 42 | 46 |
return (value << shift) | (value >> (sizeof(value) * CHAR_BIT - shift)); |
| 43 | 47 |
} |
| ... | ... | |
| 140 | 144 |
int main(int argc, char *argv[]) {
|
| 141 | 145 |
|
| 142 | 146 |
unsigned int seed_z=362436069,seed_w=52128862; |
| 143 |
LENGTH iterations=ITERATIONS,inside[1024],insides,part_inside,part_iterations;
|
|
| 147 |
LENGTH iterations=ITERATIONS,inside[8192],insides,part_inside,part_iterations;
|
|
| 144 | 148 |
int numtasks,rank,rc,tag=1,i; |
| 145 | 149 |
float pi; |
| 146 | 150 |
|
| ... | ... | |
| 164 | 168 |
|
| 165 | 169 |
MPI_Comm_size(MPI_COMM_WORLD,&numtasks); |
| 166 | 170 |
MPI_Comm_rank(MPI_COMM_WORLD,&rank); |
| 171 |
|
|
| 172 |
MPI_Comm_size(MPI_COMM_WORLD,&numtasks); |
|
| 173 |
MPI_Comm_rank(MPI_COMM_WORLD,&rank); |
|
| 167 | 174 |
|
| 175 |
const int nitems=2; |
|
| 176 |
int blocklengths[2] = {1,1};
|
|
| 177 |
|
|
| 178 |
#ifdef LONG |
|
| 179 |
MPI_Datatype types[2] = {MPI_LONG, MPI_LONG};
|
|
| 180 |
#else |
|
| 181 |
MPI_Datatype types[2] = {MPI_INT, MPI_LONG};
|
|
| 182 |
#endif |
|
| 183 |
|
|
| 184 |
MPI_Datatype mpi_result_type; |
|
| 185 |
MPI_Aint offsets[2]; |
|
| 186 |
|
|
| 187 |
offsets[0] = offsetof(result, inside); |
|
| 188 |
offsets[1] = offsetof(result, useconds); |
|
| 189 |
|
|
| 190 |
MPI_Type_create_struct(nitems, blocklengths, offsets, types, &mpi_result_type); |
|
| 191 |
MPI_Type_commit(&mpi_result_type); |
|
| 192 |
|
|
| 168 | 193 |
if (rank==0) {
|
| 169 | 194 |
|
| 170 | 195 |
if (argc > 1) {
|
| ... | ... | |
| 175 | 200 |
printf("\t\t#1 : number of iterations (default 1 billion)\n\n");
|
| 176 | 201 |
} |
| 177 | 202 |
|
| 178 |
printf ("Sizeof int = %lld bytes.\n", (long long)sizeof(int));
|
|
| 179 |
printf ("Sizeof long = %lld bytes.\n", (long long)sizeof(long));
|
|
| 180 |
printf ("Sizeof long long = %lld bytes.\n", (long long)sizeof(long long));
|
|
| 203 |
printf ("\tSizeof int = %lld bytes.\n", (long long)sizeof(int));
|
|
| 204 |
printf ("\tSizeof long = %lld bytes.\n", (long long)sizeof(long));
|
|
| 205 |
printf ("\tSizeof long long = %lld bytes.\n", (long long)sizeof(long long));
|
|
| 181 | 206 |
|
| 182 |
printf ("Max int = %u\n", INT_MAX);
|
|
| 183 |
printf ("Max long = %ld\n", LONG_MAX);
|
|
| 184 |
printf ("Max long long = %lld\n", LLONG_MAX);
|
|
| 207 |
printf ("\tMax int = %u\n", INT_MAX);
|
|
| 208 |
printf ("\tMax long = %ld\n", LONG_MAX);
|
|
| 209 |
printf ("\tMax long long = %lld\n", LLONG_MAX);
|
|
| 185 | 210 |
|
| 186 |
part_iterations=iterations/numtasks+1;
|
|
| 211 |
part_iterations=((iterations%numtasks) == 0) ? iterations/numtasks:iterations/numtasks+1 ;
|
|
| 187 | 212 |
|
| 188 | 213 |
// Split part of code |
| 189 | 214 |
for (i=1;i<numtasks;i++) {
|
| ... | ... | |
| 200 | 225 |
MPI_Wait(&RequestSend, &Stat); |
| 201 | 226 |
} |
| 202 | 227 |
|
| 203 |
#ifdef TIME |
|
| 204 | 228 |
gettimeofday(&start,(struct timezone *)0); |
| 205 |
#endif |
|
| 206 | 229 |
|
| 207 | 230 |
insides=MainLoopGlobal(part_iterations,seed_w,seed_z); |
| 208 | 231 |
|
| 209 |
#ifdef TIME |
|
| 210 | 232 |
gettimeofday(&end,(struct timezone *)0); |
| 211 | 233 |
useconds=(end.tv_sec-start.tv_sec)*1000000+end.tv_usec-start.tv_usec; |
| 212 | 234 |
|
| 213 |
printf("\tOn %s with rank %i, find %lld inside in %lu useconds.\n",
|
|
| 235 |
printf("\tOn %s with rank %i, find %lld inside in %lu useconds.\n",
|
|
| 214 | 236 |
hostname,rank,(long long)insides,useconds); |
| 215 |
#else |
|
| 216 |
printf("\tOn %s with rank %i, find %lld inside\n",hostname,rank,
|
|
| 217 |
(long long)insides); |
|
| 218 | 237 |
|
| 219 |
#endif |
|
| 220 |
|
|
| 221 | 238 |
// Join part of code |
| 222 | 239 |
for (i=1;i<numtasks;i++) {
|
| 223 |
#ifdef LONG |
|
| 224 |
rc = MPI_Irecv(&inside[i], 1, MPI_LONG_LONG, i, tag, |
|
| 240 |
|
|
| 241 |
result recv; |
|
| 242 |
|
|
| 243 |
rc = MPI_Irecv(&recv, 1, mpi_result_type, i, tag, |
|
| 225 | 244 |
MPI_COMM_WORLD, &RequestRecv2); |
| 226 |
#else |
|
| 227 |
rc = MPI_Irecv(&inside[i], 1, MPI_INT, i, tag, |
|
| 228 |
MPI_COMM_WORLD, &RequestRecv2); |
|
| 229 |
#endif |
|
| 245 |
|
|
| 230 | 246 |
if (numtasks>1) {
|
| 231 | 247 |
MPI_Wait(&RequestRecv2, &Stat); |
| 232 | 248 |
} |
| 233 | 249 |
|
| 234 |
printf("\tReceive %lu inside from rank %i\n",(unsigned long)inside[i],i);
|
|
| 250 |
inside[i]=recv.inside; |
|
| 251 |
useconds=recv.useconds; |
|
| 252 |
|
|
| 253 |
printf("\tReceive from %i, find %lld inside in %lu useconds\n",i,(long long)inside[i],useconds);
|
|
| 254 |
|
|
| 235 | 255 |
insides+=inside[i]; |
| 236 | 256 |
} |
| 237 | 257 |
|
| 238 |
pi=4.*(float)insides/(float)((iterations/numtasks)*numtasks);
|
|
| 258 |
pi=4.*(float)insides/(float)(part_iterations*numtasks);
|
|
| 239 | 259 |
|
| 240 | 260 |
printf("\n\tPi=%.40f\n\twith error %.40f\n\twith %lld iterations\n\n",pi,
|
| 241 | 261 |
fabs(pi-4*atan(1.))/pi,(long long)iterations); |
| ... | ... | |
| 244 | 264 |
else |
| 245 | 265 |
{
|
| 246 | 266 |
// Receive information from master |
| 267 |
|
|
| 247 | 268 |
#ifdef LONG |
| 248 | 269 |
rc = MPI_Irecv(&part_iterations, 1, MPI_LONG_LONG, 0, tag, |
| 249 | 270 |
MPI_COMM_WORLD, &RequestRecv); |
| ... | ... | |
| 253 | 274 |
#endif |
| 254 | 275 |
MPI_Wait(&RequestRecv, &Stat); |
| 255 | 276 |
|
| 256 |
printf("\tOn %s with rank %i, receive from master %lld\n",
|
|
| 257 |
hostname,rank,(long long)part_iterations); |
|
| 277 |
/* Not such a good idea to print information... |
|
| 278 |
printf("\tOn %s with rank %i, receive from master %lld\n",
|
|
| 279 |
hostname,rank,(long long)part_iterations); */ |
|
| 258 | 280 |
|
| 259 |
#ifdef TIME |
|
| 260 | 281 |
gettimeofday(&start,(struct timezone *)0); |
| 261 |
#endif |
|
| 262 | 282 |
|
| 263 | 283 |
part_inside=MainLoopGlobal(part_iterations,rotr(seed_w,rank),rotl(seed_z,rank)); |
| 264 | 284 |
|
| 265 |
|
|
| 266 |
#ifdef TIME |
|
| 267 | 285 |
gettimeofday(&end,(struct timezone *)0); |
| 268 | 286 |
useconds=(end.tv_sec-start.tv_sec)*1000000+end.tv_usec-start.tv_usec; |
| 269 |
|
|
| 287 |
|
|
| 288 |
/* |
|
| 270 | 289 |
printf("\tOn %s with rank %i, find %lld inside in %lu useconds.\n",
|
| 271 | 290 |
hostname,rank,(long long)part_inside,useconds); |
| 272 |
#else |
|
| 273 |
printf("\tOn %s with rank %i, find %lld inside\n",hostname,rank,
|
|
| 274 |
(long long)part_inside); |
|
| 291 |
*/ |
|
| 292 |
|
|
| 293 |
result send; |
|
| 294 |
send.inside=part_inside; |
|
| 295 |
send.useconds=useconds; |
|
| 275 | 296 |
|
| 276 |
#endif |
|
| 277 |
|
|
| 278 |
#ifdef LONG |
|
| 279 |
rc = MPI_Isend(&part_inside, 1, MPI_LONG_LONG, 0, tag, MPI_COMM_WORLD,&RequestSend2); |
|
| 280 |
#else |
|
| 281 |
rc = MPI_Isend(&part_inside, 1, MPI_INT, 0, tag, MPI_COMM_WORLD,&RequestSend2); |
|
| 282 |
#endif |
|
| 297 |
rc = MPI_Isend(&send, 1, mpi_result_type, 0, tag, MPI_COMM_WORLD,&RequestSend2); |
|
| 298 |
|
|
| 283 | 299 |
MPI_Wait(&RequestSend2, &Stat); |
| 284 | 300 |
|
| 285 | 301 |
} |
| 286 |
|
|
| 302 |
|
|
| 303 |
MPI_Type_free(&mpi_result_type); |
|
| 287 | 304 |
MPI_Finalize(); |
| 288 | 305 |
|
| 289 | 306 |
} |
Formats disponibles : Unified diff