5bbf5ba7d7
* The main thing done here is to convert from multiple FIFOs/queues per receiver (each receiver has one FIFO for each sender) to a single FIFO/queue per receiver (all senders sharing the same FIFO for a given receiver). * This requires rewriting the FIFO support, so that ompi/class/ompi_[circular_buffer_]fifo.h is no longer used and FIFO support is instead in btl_sm.h. * The number of FIFOs per receiver is actually an MCA tunable parameter, but it appears that 1 or possibly 2 FIFOs (even for 112 local processes) per receiver is sufficient. This commit was SVN r20578.
88 строки
3.0 KiB
C
88 строки
3.0 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) 2004-2008 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 (c) 2008 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_BTL_SM_SEND_FRAG_H
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#define MCA_BTL_SM_SEND_FRAG_H
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#include <sys/types.h>
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#include "ompi_config.h"
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#include "ompi/class/ompi_free_list.h"
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#include "btl_sm.h"
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#define MCA_BTL_SM_FRAG_TYPE_MASK ((uintptr_t)0x3)
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#define MCA_BTL_SM_FRAG_SEND ((uintptr_t)0x0)
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#define MCA_BTL_SM_FRAG_ACK ((uintptr_t)0x1)
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#define MCA_BTL_SM_FRAG_PUT ((uintptr_t)0x2)
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#define MCA_BTL_SM_FRAG_GET ((uintptr_t)0x3)
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#define MCA_BTL_SM_FRAG_STATUS_MASK ((uintptr_t)0x4)
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struct mca_btl_sm_frag_t;
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struct mca_btl_sm_hdr_t {
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struct mca_btl_sm_frag_t *frag;
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size_t len;
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int my_smp_rank;
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mca_btl_base_tag_t tag;
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};
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typedef struct mca_btl_sm_hdr_t mca_btl_sm_hdr_t;
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/**
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* shared memory send fragment derived type.
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*/
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struct mca_btl_sm_frag_t {
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mca_btl_base_descriptor_t base;
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mca_btl_base_segment_t segment;
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struct mca_btl_base_endpoint_t *endpoint;
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size_t size;
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/* pointer written to the FIFO, this is the base of the shared memory region */
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mca_btl_sm_hdr_t *hdr;
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ompi_free_list_t* my_list;
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};
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typedef struct mca_btl_sm_frag_t mca_btl_sm_frag_t;
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typedef struct mca_btl_sm_frag_t mca_btl_sm_frag1_t;
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typedef struct mca_btl_sm_frag_t mca_btl_sm_frag2_t;
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OBJ_CLASS_DECLARATION(mca_btl_sm_frag_t);
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OBJ_CLASS_DECLARATION(mca_btl_sm_frag1_t);
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OBJ_CLASS_DECLARATION(mca_btl_sm_frag2_t);
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#define MCA_BTL_SM_FRAG_ALLOC_EAGER(frag, rc) \
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{ \
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ompi_free_list_item_t* item; \
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OMPI_FREE_LIST_GET(&mca_btl_sm_component.sm_frags_eager, item, rc); \
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frag = (mca_btl_sm_frag_t*)item; \
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}
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#define MCA_BTL_SM_FRAG_ALLOC_MAX(frag, rc) \
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{ \
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ompi_free_list_item_t* item; \
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OMPI_FREE_LIST_GET(&mca_btl_sm_component.sm_frags_max, item, rc); \
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frag = (mca_btl_sm_frag_t*)item; \
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}
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#define MCA_BTL_SM_FRAG_RETURN(frag) \
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{ \
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OMPI_FREE_LIST_RETURN(frag->my_list, (ompi_free_list_item_t*)(frag)); \
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}
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#endif
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