433f8a7694
receive queues are shared among all PMLs, they are declared in the base PML, and the selected PML is in charge of initializing and releasing them. The CM PML is slightly different compared with OB1 or DR. Internally it use 2 different types of requests: light and heavy. However, now with this patch both types of requests are stored in the same queue, and cast appropriately on the allocation macro. This means we might use less memory than we allocate, but in exchange we got full support for most of the parallel debuggers. Another thing with this patch, is that now for all PML (CM included) the basic PML requests start with the same fields, and they are declared in the same order in the request structure. Moreover, the fields have been moved in such a way that only one volatile/atomic will exist per line of cache (hopefully). This commit was SVN r15346.
92 строки
3.3 KiB
C
92 строки
3.3 KiB
C
/*
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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) 2004-2005 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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* $COPYRIGHT$
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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/class/ompi_free_list.h"
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#include "ompi/request/request.h"
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#include "ompi/datatype/convertor.h"
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#if defined(c_plusplus) || defined(__cplusplus)
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extern "C" {
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#endif
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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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typedef enum {
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MCA_PML_REQUEST_NULL,
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MCA_PML_REQUEST_SEND,
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MCA_PML_REQUEST_RECV,
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MCA_PML_REQUEST_IPROBE,
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MCA_PML_REQUEST_PROBE
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} mca_pml_base_request_type_t;
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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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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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ompi_convertor_t req_convertor; /**< always need the convertor */
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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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/*
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* Mark the MPI request as completed and trigger the condition if required.
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*/
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#define MCA_PML_BASE_REQUEST_MPI_COMPLETE( request ) \
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do { \
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(request)->req_complete = true; \
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ompi_request_completed++; \
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if(ompi_request_waiting) { \
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opal_condition_broadcast(&ompi_request_cond); \
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} \
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} while(0)
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#if defined(c_plusplus) || defined(__cplusplus)
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}
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#endif
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#endif
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