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openmpi/ompi/mca/pml/cm/pml_cm_request.h

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/*
* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
* University Research and Technology
* Corporation. All rights reserved.
* Copyright (c) 2004-2007 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) 2004-2006 The Regents of the University of California.
* All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#ifndef PML_CM_REQUEST_H
#define PML_CM_REQUEST_H
#include "ompi/mca/pml/base/pml_base_sendreq.h"
#include "ompi/mca/pml/base/pml_base_bsend.h"
#include "ompi/mca/pml/pml.h"
#include "ompi/mca/mtl/mtl.h"
/**
* Type of request.
*/
typedef enum {
MCA_PML_CM_REQUEST_SEND_HEAVY,
MCA_PML_CM_REQUEST_SEND_THIN,
MCA_PML_CM_REQUEST_RECV_HEAVY,
MCA_PML_CM_REQUEST_RECV_THIN,
MCA_PML_CM_REQUEST_NULL
} mca_pml_cm_request_type_t;
/**
* Base type for PML CM P2P requests
*/
struct mca_pml_cm_request_t {
/* START: These fields have to match the definition of the mca_pml_base_request_t */
ompi_request_t req_ompi; /**< base request */
volatile bool req_pml_complete; /**< flag indicating if the pt-2-pt layer is done with this request */
mca_pml_cm_request_type_t req_pml_type;
struct ompi_communicator_t *req_comm; /**< communicator pointer */
struct ompi_datatype_t *req_datatype; /**< pointer to data type */
volatile bool req_free_called; /**< flag indicating if the user has freed this request */
- Split the datatype engine into two parts: an MPI specific part in 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.
2009-07-13 08:56:31 +04:00
opal_convertor_t req_convertor; /**< convertor that describes the memory layout */
/* END: These fields have to match the definition of the mca_pml_base_request_t */
};
typedef struct mca_pml_cm_request_t mca_pml_cm_request_t;
OBJ_CLASS_DECLARATION(mca_pml_cm_request_t);
#endif