diff options
Diffstat (limited to 'src/H5Dio.c')
| -rw-r--r-- | src/H5Dio.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/src/H5Dio.c b/src/H5Dio.c index b7c7219..ce75021 100644 --- a/src/H5Dio.c +++ b/src/H5Dio.c @@ -515,6 +515,7 @@ H5D_read(H5D_t *dataset, const H5T_t *mem_type, const H5S_t *mem_space, H5S_conv_t *sconv=NULL; /*space conversion funcs*/ #ifdef H5_HAVE_PARALLEL H5FD_mpio_xfer_t xfer_mode; /*xfer_mode for this request */ + hbool_t use_par_opt_io=FALSE; /* Whether the 'optimized' I/O routines with be parallel */ hbool_t xfer_mode_changed=FALSE; /* Whether the transfer mode was changed */ #endif /*H5_HAVE_PARALLEL*/ H5P_genplist_t *dx_plist=NULL; /* Data transfer property list */ @@ -637,11 +638,13 @@ H5D_read(H5D_t *dataset, const H5T_t *mem_type, const H5S_t *mem_space, } /* end switch */ /* Get dataspace functions */ - if (NULL==(sconv=H5S_find(mem_space, file_space, sconv_flags))) + if (NULL==(sconv=H5S_find(mem_space, file_space, sconv_flags, &use_par_opt_io))) HGOTO_ERROR (H5E_DATASET, H5E_UNSUPPORTED, FAIL, "unable to convert from file to memory data space"); #ifdef H5_HAVE_PARALLEL - H5D_io_assist_mpio(dx_plist, xfer_mode, &xfer_mode_changed); + /* Don't reset the transfer mode if we can't or won't use it */ + if(!use_par_opt_io || !H5T_path_noop(tpath)) + H5D_io_assist_mpio(dx_plist, xfer_mode, &xfer_mode_changed); #endif /*H5_HAVE_PARALLEL*/ /* Determine correct I/O routine to invoke */ @@ -733,6 +736,7 @@ H5D_write(H5D_t *dataset, const H5T_t *mem_type, const H5S_t *mem_space, H5S_conv_t *sconv=NULL; /*space conversion funcs*/ #ifdef H5_HAVE_PARALLEL H5FD_mpio_xfer_t xfer_mode; /*xfer_mode for this request */ + hbool_t use_par_opt_io=FALSE; /* Whether the 'optimized' I/O routines with be parallel */ hbool_t xfer_mode_changed=FALSE; /* Whether the transfer mode was changed */ #endif /*H5_HAVE_PARALLEL*/ H5P_genplist_t *dx_plist=NULL; /* Data transfer property list */ @@ -854,11 +858,13 @@ H5D_write(H5D_t *dataset, const H5T_t *mem_type, const H5S_t *mem_space, } /* end switch */ /* Get dataspace functions */ - if (NULL==(sconv=H5S_find(mem_space, file_space, sconv_flags))) + if (NULL==(sconv=H5S_find(mem_space, file_space, sconv_flags, &use_par_opt_io))) HGOTO_ERROR (H5E_DATASET, H5E_UNSUPPORTED, FAIL, "unable to convert from memory to file data space"); #ifdef H5_HAVE_PARALLEL - H5D_io_assist_mpio(dx_plist, xfer_mode, &xfer_mode_changed); + /* Don't reset the transfer mode if we can't or won't use it */ + if(!use_par_opt_io || !H5T_path_noop(tpath)) + H5D_io_assist_mpio(dx_plist, xfer_mode, &xfer_mode_changed); #endif /*H5_HAVE_PARALLEL*/ /* Determine correct I/O routine to invoke */ |