552c9ca5a0
WHAT: Open our low-level communication infrastructure by moving all necessary components (btl/rcache/allocator/mpool) down in OPAL All the components required for inter-process communications are currently deeply integrated in the OMPI layer. Several groups/institutions have express interest in having a more generic communication infrastructure, without all the OMPI layer dependencies. This communication layer should be made available at a different software level, available to all layers in the Open MPI software stack. As an example, our ORTE layer could replace the current OOB and instead use the BTL directly, gaining access to more reactive network interfaces than TCP. Similarly, external software libraries could take advantage of our highly optimized AM (active message) communication layer for their own purpose. UTK with support from Sandia, developped a version of Open MPI where the entire communication infrastucture has been moved down to OPAL (btl/rcache/allocator/mpool). Most of the moved components have been updated to match the new schema, with few exceptions (mainly BTLs where I have no way of compiling/testing them). Thus, the completion of this RFC is tied to being able to completing this move for all BTLs. For this we need help from the rest of the Open MPI community, especially those supporting some of the BTLs. A non-exhaustive list of BTLs that qualify here is: mx, portals4, scif, udapl, ugni, usnic. This commit was SVN r32317.
84 строки
3.1 KiB
C
84 строки
3.1 KiB
C
/* -*- Mode: C; c-basic-offset:4 ; -*- */
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/*
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* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
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* University Research and Technology
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* Corporation. All rights reserved.
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* Copyright (c) 2004-2007 The University of Tennessee and The University
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* of Tennessee Research Foundation. All rights
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* reserved.
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* Copyright (c) 2004-2008 High Performance Computing Center Stuttgart,
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* University of Stuttgart. All rights reserved.
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* Copyright (c) 2004-2005 The Regents of the University of California.
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* All rights reserved.
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* Copyright (c) 2009 Sun Microsystems, Inc. All rights reserved.
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* $COPYRIGHT$
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*
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* Additional copyrights may follow
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*
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* $HEADER$
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*/
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/**
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* @file
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*/
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#ifndef MCA_PML_BASE_REQUEST_H
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#define MCA_PML_BASE_REQUEST_H
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#include "ompi_config.h"
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#include "opal/class/ompi_free_list.h"
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#include "ompi/communicator/communicator.h"
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#include "ompi/request/request.h"
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#include "opal/datatype/opal_convertor.h"
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BEGIN_C_DECLS
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/**
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* External list for the requests. They are declared as lists of
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* the basic request type, which will allow all PML to overload
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* the list. Beware these free lists have to be initialized
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* directly by the PML who win the PML election.
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*/
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OMPI_DECLSPEC extern ompi_free_list_t mca_pml_base_send_requests;
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OMPI_DECLSPEC extern ompi_free_list_t mca_pml_base_recv_requests;
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/**
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* Type of request.
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*/
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/*
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* The following include pulls in shared typedefs with debugger plugins.
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* For more information on why we do this see the Notice to developers
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* comment at the top of the ompi_msgq_dll.c file.
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*/
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#include "pml_base_request_dbg.h"
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/**
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* Base type for PML P2P requests
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*/
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struct mca_pml_base_request_t {
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/* START: These fields have to match the definition of the mca_pml_cm_request_t */
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ompi_request_t req_ompi; /**< base request */
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volatile bool req_pml_complete; /**< flag indicating if the pt-2-pt layer is done with this request */
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mca_pml_base_request_type_t req_type; /**< MPI request type - used for test */
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struct ompi_communicator_t *req_comm; /**< communicator pointer */
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struct ompi_datatype_t *req_datatype; /**< pointer to data type */
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volatile bool req_free_called; /**< flag indicating if the user has freed this request */
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opal_convertor_t req_convertor; /**< always need the convertor */
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/* END: These field have to match the definition of the mca_pml_cm_request_t */
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void *req_addr; /**< pointer to application buffer */
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size_t req_count; /**< count of user datatype elements */
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int32_t req_peer; /**< peer process - rank w/in this communicator */
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int32_t req_tag; /**< user defined tag */
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struct ompi_proc_t* req_proc; /**< peer process */
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uint64_t req_sequence; /**< sequence number for MPI pt-2-pt ordering */
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};
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typedef struct mca_pml_base_request_t mca_pml_base_request_t;
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OMPI_DECLSPEC OBJ_CLASS_DECLARATION(mca_pml_base_request_t);
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END_C_DECLS
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#endif
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