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.
82 строки
2.0 KiB
C
82 строки
2.0 KiB
C
/*
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* Copyright (c) 2008 Cisco Systems, Inc. All rights reserved.
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* Copyright (c) 2009 Sandia National Laboratories. All rights reserved.
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*
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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 OPAL_BTL_OPENIB_FD_H_
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#define OPAL_BTL_OPENIB_FD_H_
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#include "opal_config.h"
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BEGIN_C_DECLS
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/**
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* Typedef for fd callback function
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*/
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typedef void *(opal_btl_openib_fd_event_callback_fn_t)(int fd, int flags,
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void *context);
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/**
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* Typedef for generic callback function
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*/
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typedef void *(opal_btl_openib_fd_main_callback_fn_t)(void *context);
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/**
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* Initialize fd monitoring.
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* Called by the main thread.
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*/
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int opal_btl_openib_fd_init(void);
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/**
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* Start monitoring an fd.
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* Called by main or service thread; callback will be in service thread.
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*/
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int opal_btl_openib_fd_monitor(int fd, int flags,
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opal_btl_openib_fd_event_callback_fn_t *callback,
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void *context);
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/**
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* Stop monitoring an fd.
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* Called by main or service thread; callback will be in service thread.
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*/
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int opal_btl_openib_fd_unmonitor(int fd,
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opal_btl_openib_fd_event_callback_fn_t *callback,
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void *context);
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/**
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* Run a function in the service thread.
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* Called by the main thread.
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*/
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int opal_btl_openib_fd_run_in_service(opal_btl_openib_fd_main_callback_fn_t callback,
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void *context);
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/**
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* Run a function in the main thread.
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* Called by the service thread.
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*/
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int opal_btl_openib_fd_run_in_main(opal_btl_openib_fd_main_callback_fn_t callback,
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void *context);
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/**
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* Drain all pending messages from the main thread's pipe.
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* Likely only useful during finalize, when the event library
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* won't fire callbacks.
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*/
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int opal_btl_openib_fd_main_thread_drain(void);
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/**
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* Finalize fd monitoring.
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* Called by the main thread.
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*/
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int opal_btl_openib_fd_finalize(void);
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END_C_DECLS
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#endif /* OPAL_BTL_OPENIB_FD_H_ */
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