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
2.7 KiB
C
82 строки
2.7 KiB
C
/*
|
|
* Copyright (c) 2013 Mellanox Technologies, Inc.
|
|
* All rights reserved.
|
|
* $COPYRIGHT$
|
|
*
|
|
* Additional copyrights may follow
|
|
*
|
|
* $HEADER$
|
|
*/
|
|
/**
|
|
* @file
|
|
*/
|
|
#ifndef MCA_SPML_BASE_REQUEST_H
|
|
#define MCA_SPML_BASE_REQUEST_H
|
|
|
|
#include "oshmem_config.h"
|
|
#include "oshmem/request/request.h" /* TODO: define */
|
|
|
|
#include "opal/datatype/opal_convertor.h"
|
|
|
|
#include "opal/class/ompi_free_list.h"
|
|
#include "ompi/mca/pml/ob1/pml_ob1_comm.h"
|
|
|
|
BEGIN_C_DECLS
|
|
|
|
/**
|
|
* External list for the requests. They are declared as lists of
|
|
* the basic request type, which will allow all SPML to overload
|
|
* the list. Beware these free lists have to be initialized
|
|
* directly by the SPML who win the SPML election.
|
|
*/
|
|
OSHMEM_DECLSPEC extern ompi_free_list_t mca_spml_base_put_requests;
|
|
OSHMEM_DECLSPEC extern ompi_free_list_t mca_spml_base_get_requests;
|
|
OSHMEM_DECLSPEC extern ompi_free_list_t mca_spml_base_send_requests;
|
|
OSHMEM_DECLSPEC extern ompi_free_list_t mca_spml_base_recv_requests;
|
|
OSHMEM_DECLSPEC extern ompi_free_list_t mca_spml_base_atomic_requests;
|
|
|
|
/* TODO: Consider to add requests lists
|
|
* 1. List of Non blocking requests with NULL handle.
|
|
* 2. List of Non blocking request with Non-NULL handle.
|
|
* 3. List of non completed puts (for small msgs).
|
|
*/
|
|
|
|
/**
|
|
* Types of one sided requests.
|
|
*/
|
|
typedef enum {
|
|
MCA_SPML_REQUEST_NULL,
|
|
MCA_SPML_REQUEST_PUT, /* Put request */
|
|
MCA_SPML_REQUEST_GET, /* Get Request */
|
|
MCA_SPML_REQUEST_SEND, /* Send Request */
|
|
MCA_SPML_REQUEST_RECV, /* Receive Request */
|
|
MCA_SPML_REQUEST_ATOMIC_CAS, /* Atomic Compare-And-Swap request */
|
|
MCA_SPML_REQUEST_ATOMIC_FAAD /* Atomic Fatch-And-Add request */
|
|
} mca_spml_base_request_type_t;
|
|
|
|
/**
|
|
* Base type for SPML one sided requests
|
|
*/
|
|
struct mca_spml_base_request_t {
|
|
|
|
oshmem_request_t req_oshmem; /**< base request */
|
|
volatile bool req_spml_complete; /**< flag indicating if the one sided layer is done with this request */
|
|
mca_spml_base_request_type_t req_type; /**< SHMEM request type */
|
|
volatile bool req_free_called; /**< flag indicating if the user has freed this request */
|
|
opal_convertor_t req_convertor; /**< always need the convertor */
|
|
|
|
void *req_addr; /**< pointer to application buffer */
|
|
size_t req_count; /**< count of user datatype elements *//* TODO: Need to remove since we are going to remove datatype*/
|
|
int32_t req_peer; /**< peer process - rank of process executing the parallel program */
|
|
oshmem_proc_t* req_proc; /**< peer process */
|
|
uint64_t req_sequence; /**< sequence number for shmem one sided ordering */
|
|
};
|
|
typedef struct mca_spml_base_request_t mca_spml_base_request_t;
|
|
|
|
OSHMEM_DECLSPEC OBJ_CLASS_DECLARATION(mca_spml_base_request_t);
|
|
|
|
END_C_DECLS
|
|
|
|
#endif
|
|
|