6c5532072a
OMPI and a language agnostic part in OPAL. The convertor is completely moved into OPAL. This offers several benefits as described in RFC http://www.open-mpi.org/community/lists/devel/2009/07/6387.php namely: - Fewer basic types (int* and float* types, boolean and wchar - Fixing naming scheme to ompi-nomenclature. - Usability outside of the ompi-layer. - Due to the fixed nature of simple opal types, their information is completely known at compile time and therefore constified - With fewer datatypes (22), the actual sizes of bit-field types may be reduced from 64 to 32 bits, allowing reorganizing the opal_datatype structure, eliminating holes and keeping data required in convertor (upon send/recv) in one cacheline... This has implications to the convertor-datastructure and other parts of the code. - Several performance tests have been run, the netpipe latency does not change with this patch on Linux/x86-64 on the smoky cluster. - Extensive tests have been done to verify correctness (no new regressions) using: 1. mpi_test_suite on linux/x86-64 using clean ompi-trunk and ompi-ddt: a. running both trunk and ompi-ddt resulted in no differences (except for MPI_SHORT_INT and MPI_TYPE_MIX_LB_UB do now run correctly). b. with --enable-memchecker and running under valgrind (one buglet when run with static found in test-suite, commited) 2. ibm testsuite on linux/x86-64 using clean ompi-trunk and ompi-ddt: all passed (except for the dynamic/ tests failed!! as trunk/MTT) 3. compilation and usage of HDF5 tests on Jaguar using PGI and PathScale compilers. 4. compilation and usage on Scicortex. - Please note, that for the heterogeneous case, (-m32 compiled binaries/ompi), neither ompi-trunk, nor ompi-ddt branch would successfully launch. This commit was SVN r21641.
131 строка
3.7 KiB
C
131 строка
3.7 KiB
C
/*
|
|
* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
|
|
* University Research and Technology
|
|
* Corporation. All rights reserved.
|
|
* Copyright (c) 2004-2006 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.
|
|
* $COPYRIGHT$
|
|
*
|
|
* Additional copyrights may follow
|
|
*
|
|
* $HEADER$
|
|
*/
|
|
|
|
#include "ompi_config.h"
|
|
#include "coll_basic.h"
|
|
|
|
#include <stdio.h>
|
|
|
|
#include "mpi.h"
|
|
#include "ompi/constants.h"
|
|
#include "ompi/op/op.h"
|
|
#include "ompi/mca/coll/coll.h"
|
|
#include "ompi/mca/coll/base/coll_tags.h"
|
|
#include "ompi/mca/pml/pml.h"
|
|
#include "coll_basic.h"
|
|
|
|
|
|
/*
|
|
* scan
|
|
*
|
|
* Function: - basic scan operation
|
|
* Accepts: - same arguments as MPI_Scan()
|
|
* Returns: - MPI_SUCCESS or error code
|
|
*/
|
|
int
|
|
mca_coll_basic_scan_intra(void *sbuf, void *rbuf, int count,
|
|
struct ompi_datatype_t *dtype,
|
|
struct ompi_op_t *op,
|
|
struct ompi_communicator_t *comm,
|
|
mca_coll_base_module_t *module)
|
|
{
|
|
int size, rank, err;
|
|
ptrdiff_t true_lb, true_extent, lb, extent;
|
|
char *free_buffer = NULL;
|
|
char *pml_buffer = NULL;
|
|
|
|
/* Initialize */
|
|
|
|
rank = ompi_comm_rank(comm);
|
|
size = ompi_comm_size(comm);
|
|
|
|
/* If I'm rank 0, just copy into the receive buffer */
|
|
|
|
if (0 == rank) {
|
|
if (MPI_IN_PLACE != sbuf) {
|
|
err = ompi_datatype_copy_content_same_ddt(dtype, count, (char*)rbuf, (char*)sbuf);
|
|
if (MPI_SUCCESS != err) {
|
|
return err;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Otherwise receive previous buffer and reduce. */
|
|
|
|
else {
|
|
/* Allocate a temporary buffer. Rationale for this size is
|
|
* listed in coll_basic_reduce.c. Use this temporary buffer to
|
|
* receive into, later. */
|
|
|
|
ompi_datatype_get_extent(dtype, &lb, &extent);
|
|
ompi_datatype_get_true_extent(dtype, &true_lb, &true_extent);
|
|
|
|
free_buffer = (char*)malloc(true_extent + (count - 1) * extent);
|
|
if (NULL == free_buffer) {
|
|
return OMPI_ERR_OUT_OF_RESOURCE;
|
|
}
|
|
pml_buffer = free_buffer - lb;
|
|
|
|
/* Copy the send buffer into the receive buffer. */
|
|
|
|
if (MPI_IN_PLACE != sbuf) {
|
|
err = ompi_datatype_copy_content_same_ddt(dtype, count, (char*)rbuf, (char*)sbuf);
|
|
if (MPI_SUCCESS != err) {
|
|
if (NULL != free_buffer) {
|
|
free(free_buffer);
|
|
}
|
|
return err;
|
|
}
|
|
}
|
|
|
|
/* Receive the prior answer */
|
|
|
|
err = MCA_PML_CALL(recv(pml_buffer, count, dtype,
|
|
rank - 1, MCA_COLL_BASE_TAG_SCAN, comm,
|
|
MPI_STATUS_IGNORE));
|
|
if (MPI_SUCCESS != err) {
|
|
if (NULL != free_buffer) {
|
|
free(free_buffer);
|
|
}
|
|
return err;
|
|
}
|
|
|
|
/* Perform the operation */
|
|
|
|
ompi_op_reduce(op, pml_buffer, rbuf, count, dtype);
|
|
|
|
/* All done */
|
|
|
|
if (NULL != free_buffer) {
|
|
free(free_buffer);
|
|
}
|
|
}
|
|
|
|
/* Send result to next process. */
|
|
|
|
if (rank < (size - 1)) {
|
|
return MCA_PML_CALL(send(rbuf, count, dtype, rank + 1,
|
|
MCA_COLL_BASE_TAG_SCAN,
|
|
MCA_PML_BASE_SEND_STANDARD, comm));
|
|
}
|
|
|
|
/* All done */
|
|
|
|
return MPI_SUCCESS;
|
|
}
|