diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/H5FDmpio.c | 50 |
1 files changed, 34 insertions, 16 deletions
diff --git a/src/H5FDmpio.c b/src/H5FDmpio.c index 1feff43..1969899 100644 --- a/src/H5FDmpio.c +++ b/src/H5FDmpio.c @@ -1172,6 +1172,7 @@ H5FD__mpio_read(H5FD_t *_file, H5FD_mem_t H5_ATTR_UNUSED type, hid_t H5_ATTR_UNU int n; #endif hbool_t use_view_this_time = FALSE; + hbool_t derived_type = FALSE; hbool_t rank0_bcast = FALSE; /* If read-with-rank0-and-bcast flag was used */ #ifdef H5FDmpio_DEBUG hbool_t H5FD_mpio_debug_t_flag = (H5FD_mpio_debug_flags_s[(int)'t'] && H5FD_MPIO_TRACE_THIS_RANK(file)); @@ -1199,8 +1200,6 @@ H5FD__mpio_read(H5FD_t *_file, H5FD_mem_t H5_ATTR_UNUSED type, hid_t H5_ATTR_UNU if (H5FD_mpi_haddr_to_MPIOff(addr, &mpi_off /*out*/) < 0) HGOTO_ERROR(H5E_INTERNAL, H5E_BADRANGE, FAIL, "can't convert from haddr to MPI off") size_i = (int)size; - if ((hsize_t)size_i != size) - HGOTO_ERROR(H5E_INTERNAL, H5E_BADRANGE, FAIL, "can't convert from size to size_i") /* Only look for MPI views for raw data transfers */ if (type == H5FD_MEM_DRAW) { @@ -1304,6 +1303,21 @@ H5FD__mpio_read(H5FD_t *_file, H5FD_mem_t H5_ATTR_UNUSED type, hid_t H5_ATTR_UNU HMPI_GOTO_ERROR(FAIL, "MPI_File_set_view failed", mpi_code) } /* end if */ else { + if (size != (hsize_t)size_i) { + /* If HERE, then we need to work around the integer size limit + * of 2GB. The input size_t size variable cannot fit into an integer, + * but we can get around that limitation by creating a different datatype + * and then setting the integer size (or element count) to 1 when using + * the derived_type. + */ + + if (H5_mpio_create_large_type(size, 0, MPI_BYTE, &buf_type) < 0) + HGOTO_ERROR(H5E_INTERNAL, H5E_CANTGET, FAIL, "can't create MPI-I/O datatype") + + derived_type = TRUE; + size_i = 1; + } + #ifdef H5FDmpio_DEBUG if (H5FD_mpio_debug_r_flag) HDfprintf(stderr, "%s: (%d) doing MPI independent IO\n", __func__, file->mpi_rank); @@ -1377,6 +1391,9 @@ H5FD__mpio_read(H5FD_t *_file, H5FD_mem_t H5_ATTR_UNUSED type, hid_t H5_ATTR_UNU HDmemset((char *)buf + bytes_read, 0, (size_t)n); done: + if (derived_type) + MPI_Type_free(&buf_type); + #ifdef H5FDmpio_DEBUG if (H5FD_mpio_debug_t_flag) HDfprintf(stderr, "%s: (%d) Leaving\n", __func__, file->mpi_rank); @@ -1489,20 +1506,6 @@ H5FD__mpio_write(H5FD_t *_file, H5FD_mem_t type, hid_t H5_ATTR_UNUSED dxpl_id, h */ mpi_off = 0; } /* end if */ - else if (size != (hsize_t)size_i) { - /* If HERE, then we need to work around the integer size limit - * of 2GB. The input size_t size variable cannot fit into an integer, - * but we can get around that limitation by creating a different datatype - * and then setting the integer size (or element count) to 1 when using - * the derived_type. - */ - - if (H5_mpio_create_large_type(size, 0, MPI_BYTE, &buf_type) < 0) - HGOTO_ERROR(H5E_INTERNAL, H5E_CANTGET, FAIL, "can't create MPI-I/O datatype") - - derived_type = TRUE; - size_i = 1; - } /* Write the data. */ if (use_view_this_time) { @@ -1548,6 +1551,21 @@ H5FD__mpio_write(H5FD_t *_file, H5FD_mem_t type, hid_t H5_ATTR_UNUSED dxpl_id, h HMPI_GOTO_ERROR(FAIL, "MPI_File_set_view failed", mpi_code) } /* end if */ else { + if (size != (hsize_t)size_i) { + /* If HERE, then we need to work around the integer size limit + * of 2GB. The input size_t size variable cannot fit into an integer, + * but we can get around that limitation by creating a different datatype + * and then setting the integer size (or element count) to 1 when using + * the derived_type. + */ + + if (H5_mpio_create_large_type(size, 0, MPI_BYTE, &buf_type) < 0) + HGOTO_ERROR(H5E_INTERNAL, H5E_CANTGET, FAIL, "can't create MPI-I/O datatype") + + derived_type = TRUE; + size_i = 1; + } + #ifdef H5FDmpio_DEBUG if (H5FD_mpio_debug_w_flag) HDfprintf(stderr, "%s: (%d) doing MPI independent IO\n", __func__, file->mpi_rank); |