diff options
Diffstat (limited to 'src/H5FD.c')
| -rw-r--r-- | src/H5FD.c | 16 |
1 files changed, 16 insertions, 0 deletions
@@ -1852,6 +1852,10 @@ H5FDread(H5FD_t *file, H5FD_mem_t type, hid_t dxpl_id, haddr_t addr, hsize_t siz * Wednesday, August 4, 1999 * * Modifications: + * Albert Cheng, 2000-11-21 + * Disable the code that does early return when size==0 for + * Parallel mode since a collective call would require the process + * to continue on with "nothing" to transfer. * *------------------------------------------------------------------------- */ @@ -1865,8 +1869,12 @@ H5FD_read(H5FD_t *file, H5FD_mem_t type, hid_t dxpl_id, haddr_t addr, hsize_t si (H5P_DATA_XFER==H5P_get_class(dxpl_id) || H5I_object(dxpl_id))); assert(buf); +#ifndef H5_HAVE_PARALLEL + /* Do not return early for Parallel mode since the I/O could be a */ + /* collective transfer. */ /* The no-op case */ if (0==size) HRETURN(SUCCEED); +#endif /* Check if this information is in the metadata accumulator */ if((file->feature_flags&H5FD_FEAT_ACCUMULATE_METADATA) && @@ -2001,6 +2009,10 @@ H5FDwrite(H5FD_t *file, H5FD_mem_t type, hid_t dxpl_id, haddr_t addr, hsize_t si * Wednesday, August 4, 1999 * * Modifications: + * Albert Cheng, 2000-11-21 + * Disable the code that does early return when size==0 for + * Parallel mode since a collective call would require the process + * to continue on with "nothing" to transfer. * *------------------------------------------------------------------------- */ @@ -2017,8 +2029,12 @@ H5FD_write(H5FD_t *file, H5FD_mem_t type, hid_t dxpl_id, haddr_t addr, hsize_t s (H5P_DATA_XFER==H5P_get_class(dxpl_id) && H5I_object(dxpl_id))); assert(buf); +#ifndef H5_HAVE_PARALLEL + /* Do not return early for Parallel mode since the I/O could be a */ + /* collective transfer. */ /* The no-op case */ if (0==size) HRETURN(SUCCEED); +#endif /* Check for accumulating metadata */ if((file->feature_flags&H5FD_FEAT_ACCUMULATE_METADATA) && type!=H5FD_MEM_DRAW) { |