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.
84 строки
3.8 KiB
C
84 строки
3.8 KiB
C
/*
|
|
* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
|
|
* University Research and Technology
|
|
* Corporation. All rights reserved.
|
|
* Copyright (c) 2004-2007 The University of Tennessee and The University
|
|
* of Tennessee Research Foundation. All rights
|
|
* reserved.
|
|
* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
|
|
* University of Stuttgart. All rights reserved.
|
|
* Copyright (c) 2004-2005 The Regents of the University of California.
|
|
* All rights reserved.
|
|
* $COPYRIGHT$
|
|
*
|
|
* Additional copyrights may follow
|
|
*
|
|
* $HEADER$
|
|
*/
|
|
|
|
#ifndef MCA_BTL_TCP_ENDPOINT_H
|
|
#define MCA_BTL_TCP_ENDPOINT_H
|
|
|
|
#include "opal/class/opal_list.h"
|
|
#include "opal/mca/event/event.h"
|
|
#include "btl_tcp_frag.h"
|
|
#include "btl_tcp.h"
|
|
BEGIN_C_DECLS
|
|
|
|
#define MCA_BTL_TCP_ENDPOINT_CACHE 1
|
|
|
|
/**
|
|
* State of TCP endpoint connection.
|
|
*/
|
|
|
|
typedef enum {
|
|
MCA_BTL_TCP_CONNECTING = 0,
|
|
MCA_BTL_TCP_CONNECT_ACK,
|
|
MCA_BTL_TCP_CLOSED,
|
|
MCA_BTL_TCP_FAILED,
|
|
MCA_BTL_TCP_CONNECTED
|
|
} mca_btl_tcp_state_t;
|
|
|
|
/**
|
|
* An abstraction that represents a connection to a endpoint process.
|
|
* An instance of mca_btl_base_endpoint_t is associated w/ each process
|
|
* and BTL pair at startup. However, connections to the endpoint
|
|
* are established dynamically on an as-needed basis:
|
|
*/
|
|
|
|
struct mca_btl_base_endpoint_t {
|
|
opal_list_item_t super;
|
|
struct mca_btl_tcp_module_t* endpoint_btl; /**< BTL instance that created this connection */
|
|
struct mca_btl_tcp_proc_t* endpoint_proc; /**< proc structure corresponding to endpoint */
|
|
struct mca_btl_tcp_addr_t* endpoint_addr; /**< address of endpoint */
|
|
int endpoint_sd; /**< socket connection to endpoint */
|
|
#if MCA_BTL_TCP_ENDPOINT_CACHE
|
|
char* endpoint_cache; /**< cache for the recv (reduce the number of recv syscall) */
|
|
char* endpoint_cache_pos; /**< current position in the cache */
|
|
size_t endpoint_cache_length; /**< length of the data in the cache */
|
|
#endif /* MCA_BTL_TCP_ENDPOINT_CACHE */
|
|
struct mca_btl_tcp_frag_t* endpoint_send_frag; /**< current send frag being processed */
|
|
struct mca_btl_tcp_frag_t* endpoint_recv_frag; /**< current recv frag being processed */
|
|
mca_btl_tcp_state_t endpoint_state; /**< current state of the connection */
|
|
size_t endpoint_retries; /**< number of connection retries attempted */
|
|
opal_list_t endpoint_frags; /**< list of pending frags to send */
|
|
opal_mutex_t endpoint_send_lock; /**< lock for concurrent access to endpoint state */
|
|
opal_mutex_t endpoint_recv_lock; /**< lock for concurrent access to endpoint state */
|
|
opal_event_t endpoint_send_event; /**< event for async processing of send frags */
|
|
opal_event_t endpoint_recv_event; /**< event for async processing of recv frags */
|
|
bool endpoint_nbo; /**< convert headers to network byte order? */
|
|
};
|
|
|
|
typedef struct mca_btl_base_endpoint_t mca_btl_base_endpoint_t;
|
|
typedef mca_btl_base_endpoint_t mca_btl_tcp_endpoint_t;
|
|
OBJ_CLASS_DECLARATION(mca_btl_tcp_endpoint_t);
|
|
|
|
void mca_btl_tcp_set_socket_options(int sd);
|
|
void mca_btl_tcp_endpoint_close(mca_btl_base_endpoint_t*);
|
|
int mca_btl_tcp_endpoint_send(mca_btl_base_endpoint_t*, struct mca_btl_tcp_frag_t*);
|
|
bool mca_btl_tcp_endpoint_accept(mca_btl_base_endpoint_t*, struct sockaddr*, int);
|
|
void mca_btl_tcp_endpoint_shutdown(mca_btl_base_endpoint_t*);
|
|
|
|
END_C_DECLS
|
|
#endif
|