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Enable random seed to be stored. (#268)

master
Julian Kunkel 2020-11-04 13:47:35 +00:00 committed by GitHub
parent cb397242f9
commit fb66e77072
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2 changed files with 12 additions and 11 deletions
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22
src/ior.c
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@ -1622,8 +1622,8 @@ static void ValidateTests(IOR_param_t * test)
if (test->randomOffset && test->reorderTasks
&& test->filePerProc == FALSE)
ERR("random offset and constant reorder tasks specified with single-shared-file. Choose one and resubmit");
if (test->randomOffset && test->checkRead)
ERR("random offset not available with read check option (use write check)");
if (test->randomOffset && test->checkRead && test->randomSeed == -1)
ERR("random offset with read check option requires to set the random seed");
if (test->randomOffset && test->storeFileOffset)
ERR("random offset not available with store file offset option)");
if ((strcasecmp(test->api, "HDF5") == 0) && test->randomOffset)
@ -1709,11 +1709,11 @@ IOR_offset_t *GetOffsetArrayRandom(IOR_param_t * test, int pretendRank, int acce
IOR_offset_t fileSize;
IOR_offset_t *offsetArray;
/* set up seed for random() */
if (access == WRITE || access == READ) {
/* set up seed, each process can determine which regions to access individually */
if (test->randomSeed == -1) {
test->randomSeed = seed = rand();
} else {
seed = test->randomSeed;
seed = test->randomSeed + pretendRank;
}
srand(seed);
@ -1723,16 +1723,16 @@ IOR_offset_t *GetOffsetArrayRandom(IOR_param_t * test, int pretendRank, int acce
}
/* count needed offsets (pass 1) */
for (i = 0; i < fileSize; i += test->transferSize) {
if (test->filePerProc == FALSE) {
if (test->filePerProc == FALSE) {
for (i = 0; i < fileSize; i += test->transferSize) {
// this counts which process get how many transferes in
// a shared file
if ((rand() % test->numTasks) == pretendRank) {
offsets++;
}
} else {
offsets++;
}
}
} else {
offsets += fileSize / test->transferSize;
}
/* setup empty array */
@ -1749,7 +1749,7 @@ IOR_offset_t *GetOffsetArrayRandom(IOR_param_t * test, int pretendRank, int acce
}
} else {
/* fill with offsets (pass 2) */
srand(seed); /* need same seed to get same transfers as counted in the beginning*/
srand(seed); /* need same seedto get same transfers as counted in the beginning*/
for (i = 0; i < fileSize; i += test->transferSize) {
if ((rand() % test->numTasks) == pretendRank) {
offsetArray[offsetCnt] = i;

1
src/parse_options.c
View File

@ -433,6 +433,7 @@ option_help * createGlobalOptions(IOR_param_t * params){
{'y', NULL, "dualMount -- use dual mount points for a filesystem", OPTION_FLAG, 'd', & params->dualMount},
{'Y', NULL, "fsyncPerWrite -- perform sync operation after every write operation", OPTION_FLAG, 'd', & params->fsyncPerWrite},
{'z', NULL, "randomOffset -- access is to random, not sequential, offsets within a file", OPTION_FLAG, 'd', & params->randomOffset},
{0, "random-offset-seed", "The seed for -z", OPTION_OPTIONAL_ARGUMENT, 'd', & params->randomSeed},
{'Z', NULL, "reorderTasksRandom -- changes task ordering to random ordering for readback", OPTION_FLAG, 'd', & params->reorderTasksRandom},
{0, "warningAsErrors", "Any warning should lead to an error.", OPTION_FLAG, 'd', & params->warningAsErrors},
{.help=" -O summaryFile=FILE -- store result data into this file", .arg = OPTION_OPTIONAL_ARGUMENT},