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.
81 строка
2.5 KiB
C
81 строка
2.5 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) 2004-2006 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) 2006 Sun Microsystems, Inc. All rights reserved.
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* Copyright (c) 2008 Cisco Systems, 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_BASE_H
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#define MCA_BTL_BASE_H
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#include "opal_config.h"
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#include "opal/class/opal_list.h"
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#include "opal/mca/mca.h"
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#include "opal/mca/btl/btl.h"
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BEGIN_C_DECLS
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struct mca_btl_base_selected_module_t {
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opal_list_item_t super;
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mca_btl_base_component_t *btl_component;
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mca_btl_base_module_t *btl_module;
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};
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typedef struct mca_btl_base_selected_module_t mca_btl_base_selected_module_t;
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/* holds the recv call back function to be called by the btl on
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* a receive.
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*/
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struct mca_btl_base_recv_reg_t {
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mca_btl_base_module_recv_cb_fn_t cbfunc;
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void* cbdata;
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};
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typedef struct mca_btl_base_recv_reg_t mca_btl_base_recv_reg_t;
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OPAL_DECLSPEC OBJ_CLASS_DECLARATION(mca_btl_base_selected_module_t);
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/*
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* Global functions for MCA: overall BTL open and close
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*/
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OPAL_DECLSPEC int mca_btl_base_select(bool enable_progress_threads, bool enable_mpi_threads);
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OPAL_DECLSPEC void mca_btl_base_dump(
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struct mca_btl_base_module_t*,
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struct mca_btl_base_endpoint_t*,
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int verbose);
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OPAL_DECLSPEC int mca_btl_base_param_register(mca_base_component_t *version,
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mca_btl_base_module_t *module);
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OPAL_DECLSPEC int mca_btl_base_param_verify(mca_btl_base_module_t *module);
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/*
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* Globals
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*/
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extern char* mca_btl_base_include;
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extern char* mca_btl_base_exclude;
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extern int mca_btl_base_warn_component_unused;
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extern int mca_btl_base_already_opened;
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OPAL_DECLSPEC extern opal_list_t mca_btl_base_modules_initialized;
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OPAL_DECLSPEC extern bool mca_btl_base_thread_multiple_override;
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OPAL_DECLSPEC extern mca_base_framework_t opal_btl_base_framework;
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END_C_DECLS
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#endif /* MCA_BTL_BASE_H */
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