2013-07-18 01:55:24 +04:00
|
|
|
/*
|
|
|
|
* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
|
|
|
|
* University Research and Technology
|
|
|
|
* Corporation. All rights reserved.
|
|
|
|
* Copyright (c) 2004-2005 The University of Tennessee and The University
|
|
|
|
* of Tennessee Research Foundation. All rights
|
|
|
|
* reserved.
|
|
|
|
* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
|
|
|
|
* University of Stuttgart. All rights reserved.
|
|
|
|
* Copyright (c) 2004-2005 The Regents of the University of California.
|
|
|
|
* All rights reserved.
|
|
|
|
* Copyright (c) 2013 University of Houston. All rights reserved.
|
2013-07-19 00:21:37 +04:00
|
|
|
* Copyright (c) 2013 Intel, Inc. All rights reserved.
|
2013-07-18 01:55:24 +04:00
|
|
|
* $COPYRIGHT$
|
|
|
|
*
|
|
|
|
* Additional copyrights may follow
|
|
|
|
*
|
|
|
|
* $HEADER$
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
|
|
#include "ompi_config.h"
|
2013-07-19 00:21:37 +04:00
|
|
|
|
|
|
|
#if HAVE_LIBGEN_H
|
|
|
|
#include <libgen.h>
|
|
|
|
#endif
|
|
|
|
|
2013-07-18 01:55:24 +04:00
|
|
|
#include "sharedfp_sm.h"
|
|
|
|
|
|
|
|
#include "mpi.h"
|
|
|
|
#include "ompi/constants.h"
|
|
|
|
#include "ompi/mca/sharedfp/sharedfp.h"
|
|
|
|
#include "ompi/mca/sharedfp/base/base.h"
|
|
|
|
|
|
|
|
#include <semaphore.h>
|
|
|
|
#include <sys/mman.h>
|
2013-07-19 00:17:14 +04:00
|
|
|
#include <libgen.h>
|
|
|
|
|
2013-07-18 01:55:24 +04:00
|
|
|
|
|
|
|
int mca_sharedfp_sm_file_open (struct ompi_communicator_t *comm,
|
|
|
|
char* filename,
|
|
|
|
int amode,
|
|
|
|
struct ompi_info_t *info,
|
|
|
|
mca_io_ompio_file_t *fh)
|
|
|
|
{
|
|
|
|
int err = OMPI_SUCCESS;
|
|
|
|
struct mca_sharedfp_base_data_t* sh;
|
|
|
|
struct mca_sharedfp_sm_data * sm_data = NULL;
|
|
|
|
mca_io_ompio_file_t * shfileHandle;
|
|
|
|
char * filename_basename;
|
|
|
|
char * sm_filename;
|
|
|
|
struct sm_offset * sm_offset_ptr;
|
2013-07-19 00:17:14 +04:00
|
|
|
struct sm_offset sm_offset;
|
2013-07-18 01:55:24 +04:00
|
|
|
int sm_fd;
|
|
|
|
int rank;
|
|
|
|
|
|
|
|
/*----------------------------------------------------*/
|
|
|
|
/*Open the same file again without shared file pointer*/
|
|
|
|
/*----------------------------------------------------*/
|
|
|
|
shfileHandle = (mca_io_ompio_file_t *)malloc(sizeof(mca_io_ompio_file_t));
|
|
|
|
err = ompio_io_ompio_file_open(comm,filename,amode,info,shfileHandle,false);
|
|
|
|
if ( OMPI_SUCCESS != err) {
|
|
|
|
opal_output(1, "mca_sharedfp_sm_file_open: Error during file open\n");
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*Memory is allocated here for the sh structure*/
|
|
|
|
if ( mca_sharedfp_sm_verbose ) {
|
|
|
|
printf( "mca_sharedfp_sm_file_open: malloc f_sharedfp_ptr struct\n");
|
|
|
|
}
|
|
|
|
|
|
|
|
sh = (struct mca_sharedfp_base_data_t*)malloc(sizeof(struct mca_sharedfp_base_data_t));
|
|
|
|
if ( NULL == sh ) {
|
|
|
|
opal_output(1, "mca_sharedfp_sm_file_open: Error, unable to malloc f_sharedfp_ptr struct\n");
|
|
|
|
free(shfileHandle);
|
|
|
|
return OMPI_ERR_OUT_OF_RESOURCE;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*Populate the sh file structure based on the implementation*/
|
|
|
|
sh->sharedfh = shfileHandle; /* Shared file pointer*/
|
|
|
|
sh->global_offset = 0; /* Global Offset*/
|
|
|
|
sh->comm = comm; /* Communicator*/
|
|
|
|
sh->selected_module_data = NULL;
|
|
|
|
|
|
|
|
rank = ompi_comm_rank ( sh->comm );
|
|
|
|
|
|
|
|
/*Open a shared memory segment which will hold the shared file pointer*/
|
|
|
|
if ( mca_sharedfp_sm_verbose ) {
|
|
|
|
printf( "mca_sharedfp_sm_file_open: allocatge shared memory segment.\n");
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
sm_data = (struct mca_sharedfp_sm_data*) malloc ( sizeof(struct mca_sharedfp_sm_data));
|
|
|
|
if ( NULL == sm_data ){
|
|
|
|
opal_output(1, "mca_sharedfp_sm_file_open: Error, unable to malloc sm_data struct\n");
|
|
|
|
free(sh);
|
|
|
|
free(shfileHandle);
|
|
|
|
return OMPI_ERR_OUT_OF_RESOURCE;
|
|
|
|
}
|
|
|
|
sm_data->sm_filename=NULL;
|
|
|
|
|
|
|
|
|
|
|
|
/* the shared memory segment is identified opening a file
|
|
|
|
** and then mapping it to memory
|
|
|
|
** For sharedfp we also want to put the file backed shared memory into the tmp directory
|
|
|
|
** TODO: properly name the file so that different jobs can run on the same system w/o
|
|
|
|
** overwriting each other, e.g. orte_process_info.proc_session_dir
|
|
|
|
*/
|
|
|
|
/*sprintf(sm_filename,"%s%s",filename,".sm");*/
|
|
|
|
filename_basename = basename(filename);
|
|
|
|
sm_filename = (char*) malloc( sizeof(char) * (strlen(filename_basename)+64) );
|
|
|
|
if (NULL == sm_filename) {
|
|
|
|
free(sh);
|
|
|
|
free(shfileHandle);
|
|
|
|
return OMPI_ERR_OUT_OF_RESOURCE;
|
|
|
|
}
|
|
|
|
sprintf(sm_filename,"/tmp/OMPIO_sharedfp_sm_%s%s",filename_basename,".sm");
|
|
|
|
|
|
|
|
/* open shared memory file, initialize to 0, map into memory */
|
|
|
|
sm_fd = open(sm_filename, O_RDWR | O_CREAT,
|
|
|
|
S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH);
|
|
|
|
if ( sm_fd == -1){
|
|
|
|
/*error opening file*/
|
|
|
|
printf("mca_sharedfp_sm_file_open: Error, unable to open file for mmap: %s\n",sm_filename);
|
|
|
|
free(sh);
|
|
|
|
free(shfileHandle);
|
|
|
|
return OMPI_ERROR;
|
|
|
|
}
|
|
|
|
|
|
|
|
sm_data->sm_filename = sm_filename;
|
|
|
|
|
|
|
|
/*TODO: is it necessary to write to the file first?*/
|
|
|
|
if( 0 == rank ){
|
2013-07-19 00:17:14 +04:00
|
|
|
memset ( &sm_offset, 0, sizeof (struct sm_offset ));
|
|
|
|
write ( sm_fd, &sm_offset, sizeof(struct sm_offset));
|
2013-07-18 01:55:24 +04:00
|
|
|
}
|
|
|
|
comm->c_coll.coll_barrier (comm, comm->c_coll.coll_barrier_module );
|
|
|
|
|
|
|
|
/*the file has been written to, now we can map*/
|
|
|
|
sm_offset_ptr = mmap(NULL, sizeof(struct sm_offset), PROT_READ | PROT_WRITE,
|
|
|
|
MAP_SHARED, sm_fd, 0);
|
|
|
|
|
|
|
|
close(sm_fd);
|
|
|
|
|
|
|
|
if ( sm_offset_ptr==MAP_FAILED){
|
|
|
|
err = OMPI_ERROR;
|
|
|
|
printf("mca_sharedfp_sm_file_open: Error, unable to mmap file: %s\n",sm_filename);
|
|
|
|
printf("%s\n", strerror(errno));
|
|
|
|
free(sh);
|
|
|
|
free(shfileHandle);
|
|
|
|
return OMPI_ERROR;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Initialize semaphore so that is shared between processes. */
|
|
|
|
/* the semaphore is shared by keeping it in the shared memory segment */
|
|
|
|
if(sem_init(&sm_offset_ptr->mutex, 1, 1) != -1){
|
|
|
|
/*If opening was successful*/
|
|
|
|
/*Store the new file handle*/
|
|
|
|
sm_data->sm_offset_ptr = sm_offset_ptr;
|
|
|
|
/* Assign the sm_data to sh->selected_module_data*/
|
|
|
|
sh->selected_module_data = sm_data;
|
|
|
|
/*remember the shared file handle*/
|
|
|
|
fh->f_sharedfp_data = sh;
|
|
|
|
|
|
|
|
/*write initial zero*/
|
|
|
|
if(rank==0){
|
|
|
|
MPI_Offset position=0;
|
|
|
|
sem_wait(&sm_offset_ptr->mutex);
|
|
|
|
sm_offset_ptr->offset=position;
|
|
|
|
sem_post(&sm_offset_ptr->mutex);
|
|
|
|
}
|
|
|
|
}else{
|
|
|
|
free(sm_data);
|
|
|
|
free(sh);
|
|
|
|
free(shfileHandle);
|
|
|
|
err = OMPI_ERROR;
|
|
|
|
}
|
|
|
|
|
|
|
|
comm->c_coll.coll_barrier (comm, comm->c_coll.coll_barrier_module );
|
|
|
|
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
|
|
|
|
int mca_sharedfp_sm_file_close (mca_io_ompio_file_t *fh)
|
|
|
|
{
|
|
|
|
int err = OMPI_SUCCESS;
|
|
|
|
/*sharedfp data structure*/
|
|
|
|
struct mca_sharedfp_base_data_t *sh=NULL;
|
|
|
|
/*sharedfp sm module data structure*/
|
|
|
|
struct mca_sharedfp_sm_data * file_data=NULL;
|
|
|
|
|
|
|
|
if( NULL == fh->f_sharedfp_data ){
|
|
|
|
if ( mca_sharedfp_sm_verbose ) {
|
|
|
|
printf("sharedfp_sm_file_close: shared file pointer structure not initialized\n");
|
|
|
|
}
|
|
|
|
return OMPI_SUCCESS;
|
|
|
|
}
|
|
|
|
sh = fh->f_sharedfp_data;
|
|
|
|
|
|
|
|
/* Use an MPI Barrier in order to make sure that
|
|
|
|
* all processes are ready to release the
|
|
|
|
* shared file pointer resources
|
|
|
|
*/
|
|
|
|
sh->comm->c_coll.coll_barrier (sh->comm, sh->comm->c_coll.coll_barrier_module );
|
|
|
|
|
|
|
|
file_data = (sm_data*)(sh->selected_module_data);
|
|
|
|
if (file_data) {
|
|
|
|
/*Close sm handle*/
|
|
|
|
if (file_data->sm_offset_ptr) {
|
|
|
|
/* destroy semaphore */
|
|
|
|
sem_destroy(&file_data->sm_offset_ptr->mutex);
|
|
|
|
/*Release the shared memory segment.*/
|
|
|
|
munmap(file_data->sm_offset_ptr,sizeof(struct sm_offset));
|
|
|
|
/*Q: Do we need to delete the file? */
|
|
|
|
remove(file_data->sm_filename);
|
|
|
|
}
|
|
|
|
/*free our sm data structure*/
|
|
|
|
if(file_data->sm_filename){
|
|
|
|
free(file_data->sm_filename);
|
|
|
|
}
|
|
|
|
free(file_data);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Close the main file opened by this component*/
|
|
|
|
err = ompio_io_ompio_file_close(sh->sharedfh);
|
|
|
|
|
|
|
|
/*free shared file pointer data struct*/
|
|
|
|
free(sh);
|
|
|
|
|
|
|
|
return err;
|
|
|
|
|
|
|
|
}
|