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.
176 строки
7.8 KiB
C
176 строки
7.8 KiB
C
/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil -*- */
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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) 2004-2013 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 UT-Battelle, LLC. All rights reserved.
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* Copyright (c) 2011 Sandia National Laboratories. All rights reserved.
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* Copyright (c) 2012 Los Alamos National Security, LLC. All rights
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* 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_OB1_RECVFRAG_H
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#define MCA_PML_OB1_RECVFRAG_H
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#include "pml_ob1_hdr.h"
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BEGIN_C_DECLS
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struct mca_pml_ob1_buffer_t {
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size_t len;
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void * addr;
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};
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typedef struct mca_pml_ob1_buffer_t mca_pml_ob1_buffer_t;
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struct mca_pml_ob1_recv_frag_t {
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ompi_free_list_item_t super;
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mca_pml_ob1_hdr_t hdr;
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size_t num_segments;
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mca_btl_base_module_t* btl;
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mca_btl_base_segment_t segments[MCA_BTL_DES_MAX_SEGMENTS];
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mca_pml_ob1_buffer_t buffers[MCA_BTL_DES_MAX_SEGMENTS];
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unsigned char addr[1];
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};
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typedef struct mca_pml_ob1_recv_frag_t mca_pml_ob1_recv_frag_t;
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OBJ_CLASS_DECLARATION(mca_pml_ob1_recv_frag_t);
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#define MCA_PML_OB1_RECV_FRAG_ALLOC(frag) \
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do { \
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ompi_free_list_item_t* item; \
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OMPI_FREE_LIST_WAIT_MT(&mca_pml_ob1.recv_frags, item); \
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frag = (mca_pml_ob1_recv_frag_t*)item; \
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} while(0)
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#define MCA_PML_OB1_RECV_FRAG_INIT(frag, hdr, segs, cnt, btl ) \
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do { \
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size_t i, _size; \
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mca_btl_base_segment_t* macro_segments = frag->segments; \
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mca_pml_ob1_buffer_t* buffers = frag->buffers; \
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unsigned char* _ptr = (unsigned char*)frag->addr; \
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/* init recv_frag */ \
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frag->btl = btl; \
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ob1_hdr_copy( (mca_pml_ob1_hdr_t*)hdr, &frag->hdr ); \
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frag->num_segments = 1; \
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_size = segs[0].seg_len; \
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for( i = 1; i < cnt; i++ ) { \
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_size += segs[i].seg_len; \
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} \
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/* copy over data */ \
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if(_size <= mca_pml_ob1.unexpected_limit ) { \
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macro_segments[0].seg_addr.pval = frag->addr; \
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} else { \
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buffers[0].len = _size; \
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buffers[0].addr = (char*) \
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mca_pml_ob1.allocator->alc_alloc( mca_pml_ob1.allocator, \
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buffers[0].len, \
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0, NULL); \
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_ptr = (unsigned char*)(buffers[0].addr); \
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macro_segments[0].seg_addr.pval = buffers[0].addr; \
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} \
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macro_segments[0].seg_len = _size; \
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for( i = 0; i < cnt; i++ ) { \
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memcpy( _ptr, segs[i].seg_addr.pval, segs[i].seg_len); \
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_ptr += segs[i].seg_len; \
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} \
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} while(0)
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#define MCA_PML_OB1_RECV_FRAG_RETURN(frag) \
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do { \
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if( frag->segments[0].seg_len > mca_pml_ob1.unexpected_limit ) { \
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/* return buffers */ \
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mca_pml_ob1.allocator->alc_free( mca_pml_ob1.allocator, \
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frag->buffers[0].addr ); \
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} \
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frag->num_segments = 0; \
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\
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/* return recv_frag */ \
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OMPI_FREE_LIST_RETURN_MT(&mca_pml_ob1.recv_frags, \
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(ompi_free_list_item_t*)frag); \
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} while(0)
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/**
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* Callback from BTL on receipt of a recv_frag (match).
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*/
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extern void mca_pml_ob1_recv_frag_callback_match( mca_btl_base_module_t *btl,
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mca_btl_base_tag_t tag,
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mca_btl_base_descriptor_t* descriptor,
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void* cbdata );
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/**
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* Callback from BTL on receipt of a recv_frag (rndv).
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*/
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extern void mca_pml_ob1_recv_frag_callback_rndv( mca_btl_base_module_t *btl,
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mca_btl_base_tag_t tag,
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mca_btl_base_descriptor_t* descriptor,
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void* cbdata );
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/**
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* Callback from BTL on receipt of a recv_frag (rget).
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*/
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extern void mca_pml_ob1_recv_frag_callback_rget( mca_btl_base_module_t *btl,
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mca_btl_base_tag_t tag,
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mca_btl_base_descriptor_t* descriptor,
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void* cbdata );
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/**
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* Callback from BTL on receipt of a recv_frag (ack).
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*/
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extern void mca_pml_ob1_recv_frag_callback_ack( mca_btl_base_module_t *btl,
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mca_btl_base_tag_t tag,
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mca_btl_base_descriptor_t* descriptor,
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void* cbdata );
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/**
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* Callback from BTL on receipt of a recv_frag (frag).
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*/
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extern void mca_pml_ob1_recv_frag_callback_frag( mca_btl_base_module_t *btl,
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mca_btl_base_tag_t tag,
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mca_btl_base_descriptor_t* descriptor,
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void* cbdata );
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/**
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* Callback from BTL on receipt of a recv_frag (put).
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*/
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extern void mca_pml_ob1_recv_frag_callback_put( mca_btl_base_module_t *btl,
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mca_btl_base_tag_t tag,
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mca_btl_base_descriptor_t* descriptor,
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void* cbdata );
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/**
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* Callback from BTL on receipt of a recv_frag (fin).
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*/
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extern void mca_pml_ob1_recv_frag_callback_fin( mca_btl_base_module_t *btl,
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mca_btl_base_tag_t tag,
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mca_btl_base_descriptor_t* descriptor,
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void* cbdata );
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END_C_DECLS
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#endif
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