diff options
| -rw-r--r-- | src/H5F.c | 14 |
1 files changed, 13 insertions, 1 deletions
@@ -725,9 +725,21 @@ H5F_open(const H5F_low_class_t *type, const char *name, uintn flags, HRETURN_ERROR(H5E_FILE, H5E_BADVALUE, NULL, "can't create file without write intent"); } +#ifdef HAVE_PARALLEL + /* ROMIO cannot handle file-open with EXCL Create due to racing problem */ + /* The first process creates the file which then fails all */ + /* other processes. Turn on TRUNC bit here. It does not matter */ + /* since the file does not exist at this point. */ + fd = H5F_low_open(type, name, + H5F_ACC_WRITE | H5F_ACC_CREAT | + (flags & H5F_ACC_TRUNC), + &search); +#else fd = H5F_low_open(type, name, - H5F_ACC_WRITE | H5F_ACC_CREAT | H5F_ACC_EXCL, + H5F_ACC_WRITE | H5F_ACC_CREAT | + (flags & H5F_ACC_EXCL) | (flags & H5F_ACC_TRUNC), &search); +#endif /*HAVE_PARALLEL*/ if (!fd) { HRETURN_ERROR(H5E_FILE, H5E_CANTCREATE, NULL, "can't create file"); |