diff options
Diffstat (limited to 'src/H5FDmpio.c')
| -rw-r--r-- | src/H5FDmpio.c | 82 |
1 files changed, 18 insertions, 64 deletions
diff --git a/src/H5FDmpio.c b/src/H5FDmpio.c index 3a56e0e..4d550a3 100644 --- a/src/H5FDmpio.c +++ b/src/H5FDmpio.c @@ -57,7 +57,6 @@ typedef struct H5FD_mpio_t { MPI_Info info; /*file information */ int mpi_rank; /* This process's rank */ int mpi_size; /* Total number of processes */ - hbool_t truncate_pending; /* Whether a file truncation is pending */ haddr_t eof; /*end-of-file marker */ haddr_t eoa; /*end-of-address marker */ haddr_t last_eoa; /* Last known end-of-address marker */ @@ -796,52 +795,29 @@ H5FD_mpio_open(const char *name, unsigned flags, hid_t fapl_id, file->mpi_rank = mpi_rank; file->mpi_size = mpi_size; - /* Determine if the file should be truncated */ - if(flags & H5F_ACC_TRUNC) { -#ifdef H5_MPI_FILE_SET_SIZE_BIG - /* Indicate that a 'truncate' operation is pending on the file */ - file->truncate_pending=TRUE; - - /* File is treated as zero size now */ - size=0; -#else /* H5_MPI_FILE_SET_SIZE_BIG */ - /* Only processor p0 will get the filesize and broadcast it. */ - if (mpi_rank == 0) { - /* Get current file size */ - if (MPI_SUCCESS != (mpi_code=MPI_File_get_size(fh, &size))) - HMPI_GOTO_ERROR(NULL, "MPI_File_get_size failed", mpi_code) - } /* end if */ + /* Only processor p0 will get the filesize and broadcast it. */ + if (mpi_rank == 0) { + /* Get current file size */ + if (MPI_SUCCESS != (mpi_code=MPI_File_get_size(fh, &size))) + HMPI_GOTO_ERROR(NULL, "MPI_File_get_size failed", mpi_code) + } /* end if */ - /* Broadcast file-size */ - if (MPI_SUCCESS != (mpi_code=MPI_Bcast(&size, sizeof(MPI_Offset), MPI_BYTE, 0, comm_dup))) - HMPI_GOTO_ERROR(NULL, "MPI_Bcast failed", mpi_code) + /* Broadcast file size */ + if (MPI_SUCCESS != (mpi_code=MPI_Bcast(&size, sizeof(MPI_Offset), MPI_BYTE, 0, comm_dup))) + HMPI_GOTO_ERROR(NULL, "MPI_Bcast failed", mpi_code) - /* Only truncate the file if it is non-zero length */ - if(size) { - if (MPI_SUCCESS != (mpi_code=MPI_File_set_size(fh, (MPI_Offset)0))) - HMPI_GOTO_ERROR(NULL, "MPI_File_set_size failed", mpi_code) + /* Determine if the file should be truncated */ + if(size && (flags & H5F_ACC_TRUNC)) { + if (MPI_SUCCESS != (mpi_code=MPI_File_set_size(fh, (MPI_Offset)0))) + HMPI_GOTO_ERROR(NULL, "MPI_File_set_size failed", mpi_code) - /* Don't let any proc return until all have truncated the file. */ - if (MPI_SUCCESS!= (mpi_code=MPI_Barrier(comm_dup))) - HMPI_GOTO_ERROR(NULL, "MPI_Barrier failed", mpi_code) + /* Don't let any proc return until all have truncated the file. */ + if (MPI_SUCCESS!= (mpi_code=MPI_Barrier(comm_dup))) + HMPI_GOTO_ERROR(NULL, "MPI_Barrier failed", mpi_code) - /* File is zero size now */ - size = 0; - } /* end if */ -#endif /* H5_MPI_FILE_SET_SIZE_BIG */ + /* File is zero size now */ + size = 0; } /* end if */ - else { - /* Only processor p0 will get the filesize and broadcast it. */ - if (mpi_rank == 0) { - /* Get current file size */ - if (MPI_SUCCESS != (mpi_code=MPI_File_get_size(fh, &size))) - HMPI_GOTO_ERROR(NULL, "MPI_File_get_size failed", mpi_code) - } /* end if */ - - /* Broadcast file size */ - if (MPI_SUCCESS != (mpi_code=MPI_Bcast(&size, sizeof(MPI_Offset), MPI_BYTE, 0, comm_dup))) - HMPI_GOTO_ERROR(NULL, "MPI_Bcast failed", mpi_code) - } /* end else */ /* Set the size of the file (from library's perspective) */ file->eof = H5FD_mpi_MPIOff_to_haddr(size); @@ -908,25 +884,6 @@ H5FD_mpio_close(H5FD_t *_file) assert(file); assert(H5FD_MPIO==file->pub.driver_id); -#ifdef H5_MPI_FILE_SET_SIZE_BIG - /* Check if we should truncate the file */ - if(file->truncate_pending) { - MPI_Offset mpi_off; /* Offset to write test data at */ - - /* Some numeric conversions */ - assert(file->eoa>0); - if (H5FD_mpi_haddr_to_MPIOff(file->eoa, &mpi_off)<0) - HGOTO_ERROR(H5E_INTERNAL, H5E_BADRANGE, FAIL, "can't convert from haddr to MPI off") - - /* Truncate the extra data off the end */ - /* (Don't worry about a barrier after the call, since we are closing) */ - if (MPI_SUCCESS != (mpi_code=MPI_File_set_size(file->f, mpi_off))) - HMPI_DONE_ERROR(NULL, "MPI_File_set_size failed", mpi_code) - } /* end if */ -#else /* H5_MPI_FILE_SET_SIZE_BIG */ - assert(!file->truncate_pending); -#endif /* H5_MPI_FILE_SET_SIZE_BIG */ - /* MPI_File_close sets argument to MPI_FILE_NULL */ if (MPI_SUCCESS != (mpi_code=MPI_File_close(&(file->f)/*in,out*/))) HMPI_GOTO_ERROR(FAIL, "MPI_File_close failed", mpi_code) @@ -1714,9 +1671,6 @@ H5FD_mpio_flush(H5FD_t *_file, hid_t UNUSED dxpl_id, unsigned closing) /* Extend the file's size */ if (MPI_SUCCESS != (mpi_code=MPI_File_set_size(file->f, mpi_off))) HMPI_GOTO_ERROR(FAIL, "MPI_File_set_size failed", mpi_code) - - /* File does not need to be truncated now */ - file->truncate_pending=FALSE; #else /* H5_MPI_FILE_SET_SIZE_BIG */ if (0==file->mpi_rank) { uint8_t byte=0; |