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.
132 строки
4.7 KiB
C
132 строки
4.7 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) 2014 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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#ifndef MCA_BTL_TCP_FRAG_H
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#define MCA_BTL_TCP_FRAG_H
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#include "opal_config.h"
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#ifdef HAVE_SYS_TYPES_H
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#include <sys/types.h>
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#endif
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#ifdef HAVE_SYS_UIO_H
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#include <sys/uio.h>
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#endif
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#ifdef HAVE_NET_UIO_H
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#include <net/uio.h>
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#endif
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#include "btl_tcp.h"
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#include "btl_tcp_hdr.h"
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BEGIN_C_DECLS
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#define MCA_BTL_TCP_FRAG_IOVEC_NUMBER 4
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/**
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* TCP fragment derived type.
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*/
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struct mca_btl_tcp_frag_t {
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mca_btl_base_descriptor_t base;
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mca_btl_base_segment_t segments[2];
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struct mca_btl_base_endpoint_t *endpoint;
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struct mca_btl_tcp_module_t* btl;
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mca_btl_tcp_hdr_t hdr;
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struct iovec iov[MCA_BTL_TCP_FRAG_IOVEC_NUMBER + 1];
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struct iovec *iov_ptr;
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size_t iov_cnt;
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size_t iov_idx;
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size_t size;
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int rc;
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ompi_free_list_t* my_list;
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};
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typedef struct mca_btl_tcp_frag_t mca_btl_tcp_frag_t;
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OBJ_CLASS_DECLARATION(mca_btl_tcp_frag_t);
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typedef struct mca_btl_tcp_frag_t mca_btl_tcp_frag_eager_t;
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OBJ_CLASS_DECLARATION(mca_btl_tcp_frag_eager_t);
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typedef struct mca_btl_tcp_frag_t mca_btl_tcp_frag_max_t;
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OBJ_CLASS_DECLARATION(mca_btl_tcp_frag_max_t);
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typedef struct mca_btl_tcp_frag_t mca_btl_tcp_frag_user_t;
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OBJ_CLASS_DECLARATION(mca_btl_tcp_frag_user_t);
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/*
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* Macros to allocate/return descriptors from module specific
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* free list(s).
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*/
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#define MCA_BTL_TCP_FRAG_ALLOC_EAGER(frag) \
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{ \
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ompi_free_list_item_t *item; \
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OMPI_FREE_LIST_GET_MT(&mca_btl_tcp_component.tcp_frag_eager, item); \
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frag = (mca_btl_tcp_frag_t*) item; \
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}
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#define MCA_BTL_TCP_FRAG_ALLOC_MAX(frag) \
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{ \
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ompi_free_list_item_t *item; \
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OMPI_FREE_LIST_GET_MT(&mca_btl_tcp_component.tcp_frag_max, item); \
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frag = (mca_btl_tcp_frag_t*) item; \
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}
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#define MCA_BTL_TCP_FRAG_ALLOC_USER(frag) \
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{ \
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ompi_free_list_item_t *item; \
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OMPI_FREE_LIST_GET_MT(&mca_btl_tcp_component.tcp_frag_user, item); \
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frag = (mca_btl_tcp_frag_t*) item; \
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}
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#define MCA_BTL_TCP_FRAG_RETURN(frag) \
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{ \
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OMPI_FREE_LIST_RETURN_MT(frag->my_list, (ompi_free_list_item_t*)(frag)); \
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}
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#define MCA_BTL_TCP_FRAG_INIT_DST(frag,ep) \
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do { \
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frag->rc = 0; \
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frag->btl = ep->endpoint_btl; \
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frag->endpoint = ep; \
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frag->iov[0].iov_len = sizeof(frag->hdr); \
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frag->iov[0].iov_base = (IOVBASE_TYPE*)&frag->hdr; \
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frag->iov_cnt = 1; \
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frag->iov_idx = 0; \
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frag->iov_ptr = frag->iov; \
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frag->base.des_remote = NULL; \
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frag->base.des_remote_count = 0; \
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frag->base.des_local = frag->segments; \
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frag->base.des_local_count = 1; \
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} while(0)
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bool mca_btl_tcp_frag_send(mca_btl_tcp_frag_t*, int sd);
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bool mca_btl_tcp_frag_recv(mca_btl_tcp_frag_t*, int sd);
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END_C_DECLS
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#endif
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