e361bcb64c
1. The send path get shorter. The BTL is allowed to return > 0 to specify that the descriptor was pushed to the networks, and that the memory attached to it is available again for the upper layer. The MCA_BTL_DES_SEND_ALWAYS_CALLBACK flag can be used by the PML to force the BTL to always trigger the callback. Unmodified BTL will continue to work as expected, as they will return OMPI_SUCCESS which force the PML to have exactly the same behavior as before. Some BTLs have been modified: self, sm, tcp, mx. 2. Add send immediate interface to BTL. The idea is to have a mechanism of allowing the BTL to take advantage of send optimizations such as the ability to deliver data "inline". Some network APIs such as Portals allow data to be sent using a "thin" event without packing data into a memory descriptor. This interface change allows the BTL to use such capabilities and allows for other optimizations in the future. All existing BTLs except for Portals and sm have this interface set to NULL. This commit was SVN r18551.
362 строки
22 KiB
C
362 строки
22 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) 2004-2006 The Regents of the University of California.
|
|
* All rights reserved.
|
|
* $COPYRIGHT$
|
|
*
|
|
* Additional copyrights may follow
|
|
*
|
|
* $HEADER$
|
|
*/
|
|
|
|
#ifndef PML_CM_SENDREQ_H
|
|
#define PML_CM_SENDREQ_H
|
|
|
|
#include "pml_cm_request.h"
|
|
#include "ompi/mca/pml/base/pml_base_sendreq.h"
|
|
#include "ompi/mca/pml/base/pml_base_bsend.h"
|
|
#include "ompi/mca/pml/pml.h"
|
|
#include "ompi/mca/mtl/mtl.h"
|
|
#include "opal/prefetch.h"
|
|
|
|
struct mca_pml_cm_send_request_t {
|
|
mca_pml_cm_request_t req_base;
|
|
mca_pml_base_send_mode_t req_send_mode;
|
|
};
|
|
typedef struct mca_pml_cm_send_request_t mca_pml_cm_send_request_t;
|
|
OBJ_CLASS_DECLARATION(mca_pml_cm_send_request_t);
|
|
|
|
|
|
struct mca_pml_cm_thin_send_request_t {
|
|
mca_pml_cm_send_request_t req_send;
|
|
mca_mtl_request_t req_mtl; /**< the mtl specific memory. This field should be the last in the struct */
|
|
};
|
|
typedef struct mca_pml_cm_thin_send_request_t mca_pml_cm_thin_send_request_t;
|
|
OBJ_CLASS_DECLARATION(mca_pml_cm_thin_send_request_t);
|
|
|
|
|
|
struct mca_pml_cm_hvy_send_request_t {
|
|
mca_pml_cm_send_request_t req_send;
|
|
void *req_addr; /**< pointer to application buffer */
|
|
size_t req_count; /**< count of user datatype elements */
|
|
int32_t req_peer; /**< peer process - rank w/in this communicator */
|
|
int32_t req_tag; /**< user defined tag */
|
|
void *req_buff; /**< pointer to send buffer - may not be application buffer */
|
|
bool req_blocking;
|
|
mca_mtl_request_t req_mtl; /**< the mtl specific memory. This field should be the last in the struct */
|
|
};
|
|
typedef struct mca_pml_cm_hvy_send_request_t mca_pml_cm_hvy_send_request_t;
|
|
OBJ_CLASS_DECLARATION(mca_pml_cm_hvy_send_request_t);
|
|
|
|
|
|
#define MCA_PML_CM_THIN_SEND_REQUEST_ALLOC(sendreq, comm, dst, \
|
|
ompi_proc, rc) \
|
|
do { \
|
|
ompi_free_list_item_t* item; \
|
|
ompi_proc = ompi_comm_peer_lookup( comm, dst ); \
|
|
\
|
|
if(OPAL_UNLIKELY(NULL == ompi_proc)) { \
|
|
rc = OMPI_ERR_OUT_OF_RESOURCE; \
|
|
sendreq = NULL; \
|
|
} else { \
|
|
rc = OMPI_SUCCESS; \
|
|
OMPI_FREE_LIST_WAIT(&mca_pml_base_send_requests, \
|
|
item, rc); \
|
|
sendreq = (mca_pml_cm_thin_send_request_t*)item; \
|
|
sendreq->req_send.req_base.req_pml_type = MCA_PML_CM_REQUEST_SEND_THIN; \
|
|
sendreq->req_mtl.ompi_req = (ompi_request_t*) sendreq; \
|
|
sendreq->req_mtl.completion_callback = mca_pml_cm_send_request_completion; \
|
|
} \
|
|
} while(0)
|
|
|
|
|
|
#define MCA_PML_CM_HVY_SEND_REQUEST_ALLOC(sendreq, comm, dst, \
|
|
ompi_proc, rc) \
|
|
{ \
|
|
ompi_free_list_item_t* item; \
|
|
ompi_proc = ompi_comm_peer_lookup( comm, dst ); \
|
|
if(OPAL_UNLIKELY(NULL == ompi_proc)) { \
|
|
rc = OMPI_ERR_OUT_OF_RESOURCE; \
|
|
sendreq = NULL; \
|
|
} else { \
|
|
rc = OMPI_SUCCESS; \
|
|
OMPI_FREE_LIST_WAIT(&mca_pml_base_send_requests, \
|
|
item, rc); \
|
|
sendreq = (mca_pml_cm_hvy_send_request_t*)item; \
|
|
sendreq->req_send.req_base.req_pml_type = MCA_PML_CM_REQUEST_SEND_HEAVY; \
|
|
sendreq->req_mtl.ompi_req = (ompi_request_t*) sendreq; \
|
|
sendreq->req_mtl.completion_callback = mca_pml_cm_send_request_completion; \
|
|
} \
|
|
}
|
|
|
|
|
|
#define MCA_PML_CM_SEND_REQUEST_INIT_COMMON(req_send, \
|
|
ompi_proc, \
|
|
comm, \
|
|
tag, \
|
|
datatype, \
|
|
sendmode, \
|
|
buf, \
|
|
count) \
|
|
{ \
|
|
OBJ_RETAIN(comm); \
|
|
OBJ_RETAIN(datatype); \
|
|
(req_send)->req_base.req_comm = comm; \
|
|
(req_send)->req_base.req_datatype = datatype; \
|
|
ompi_convertor_copy_and_prepare_for_send( \
|
|
ompi_proc->proc_convertor, \
|
|
datatype, \
|
|
count, \
|
|
buf, \
|
|
0, \
|
|
&(req_send)->req_base.req_convertor ); \
|
|
(req_send)->req_base.req_ompi.req_mpi_object.comm = comm; \
|
|
(req_send)->req_base.req_ompi.req_status.MPI_SOURCE = \
|
|
comm->c_my_rank; \
|
|
(req_send)->req_base.req_ompi.req_status.MPI_TAG = tag; \
|
|
(req_send)->req_base.req_ompi.req_status._count = count; \
|
|
(req_send)->req_send_mode = sendmode; \
|
|
(req_send)->req_base.req_free_called = false; \
|
|
}
|
|
|
|
#define MCA_PML_CM_HVY_SEND_REQUEST_INIT( sendreq, \
|
|
ompi_proc, \
|
|
comm, \
|
|
tag, \
|
|
dst, \
|
|
datatype, \
|
|
sendmode, \
|
|
persistent, \
|
|
blocking, \
|
|
buf, \
|
|
count) \
|
|
do { \
|
|
OMPI_REQUEST_INIT(&(sendreq->req_send.req_base.req_ompi), \
|
|
persistent); \
|
|
sendreq->req_tag = tag; \
|
|
sendreq->req_peer = dst; \
|
|
sendreq->req_addr = buf; \
|
|
sendreq->req_count = count; \
|
|
MCA_PML_CM_SEND_REQUEST_INIT_COMMON( (&sendreq->req_send), \
|
|
ompi_proc, \
|
|
comm, \
|
|
tag, \
|
|
datatype, \
|
|
sendmode, \
|
|
buf, \
|
|
count); \
|
|
ompi_convertor_get_packed_size( \
|
|
&sendreq->req_send.req_base.req_convertor, \
|
|
&sendreq->req_count ); \
|
|
\
|
|
sendreq->req_blocking = blocking; \
|
|
sendreq->req_send.req_base.req_pml_complete = \
|
|
(persistent ? true:false); \
|
|
} while(0)
|
|
|
|
|
|
#define MCA_PML_CM_THIN_SEND_REQUEST_INIT( sendreq, \
|
|
ompi_proc, \
|
|
comm, \
|
|
tag, \
|
|
dst, \
|
|
datatype, \
|
|
sendmode, \
|
|
buf, \
|
|
count) \
|
|
do { \
|
|
OMPI_REQUEST_INIT(&(sendreq->req_send.req_base.req_ompi), \
|
|
false); \
|
|
MCA_PML_CM_SEND_REQUEST_INIT_COMMON( (&sendreq->req_send), \
|
|
ompi_proc, \
|
|
comm, \
|
|
tag, \
|
|
datatype, \
|
|
sendmode, \
|
|
buf, \
|
|
count); \
|
|
sendreq->req_send.req_base.req_pml_complete = false; \
|
|
} while(0)
|
|
|
|
|
|
#define MCA_PML_CM_SEND_REQUEST_START_SETUP(req_send) \
|
|
do { \
|
|
(req_send)->req_base.req_pml_complete = false; \
|
|
(req_send)->req_base.req_ompi.req_complete = false; \
|
|
(req_send)->req_base.req_ompi.req_state = \
|
|
OMPI_REQUEST_ACTIVE; \
|
|
(req_send)->req_base.req_ompi.req_status._cancelled = 0; \
|
|
} while (0)
|
|
|
|
|
|
#define MCA_PML_CM_THIN_SEND_REQUEST_START(sendreq, \
|
|
comm, \
|
|
tag, \
|
|
dst, \
|
|
sendmode, \
|
|
blocking, \
|
|
ret) \
|
|
do { \
|
|
MCA_PML_CM_SEND_REQUEST_START_SETUP(&(sendreq)->req_send); \
|
|
ret = OMPI_MTL_CALL(isend(ompi_mtl, \
|
|
comm, \
|
|
dst, \
|
|
tag, \
|
|
&sendreq->req_send.req_base.req_convertor, \
|
|
sendmode, \
|
|
blocking, \
|
|
&sendreq->req_mtl)); \
|
|
} while (0)
|
|
|
|
#define MCA_PML_CM_HVY_SEND_REQUEST_BSEND_ALLOC(sendreq, ret) \
|
|
do { \
|
|
struct iovec iov; \
|
|
unsigned int iov_count; \
|
|
size_t max_data; \
|
|
\
|
|
if(sendreq->req_count > 0) { \
|
|
sendreq->req_buff = \
|
|
mca_pml_base_bsend_request_alloc_buf(sendreq->req_count); \
|
|
if (NULL == sendreq->req_buff) { \
|
|
ret = MPI_ERR_BUFFER; \
|
|
} else { \
|
|
iov.iov_base = (IOVBASE_TYPE*)sendreq->req_buff; \
|
|
max_data = iov.iov_len = sendreq->req_count; \
|
|
iov_count = 1; \
|
|
ompi_convertor_pack( &sendreq->req_send.req_base.req_convertor, \
|
|
&iov, \
|
|
&iov_count, \
|
|
&max_data ); \
|
|
ompi_convertor_prepare_for_send( &sendreq->req_send.req_base.req_convertor, MPI_PACKED, \
|
|
max_data, sendreq->req_buff ); \
|
|
} \
|
|
} \
|
|
} while(0);
|
|
|
|
|
|
#define MCA_PML_CM_HVY_SEND_REQUEST_START(sendreq, ret) \
|
|
do { \
|
|
ret = OMPI_SUCCESS; \
|
|
MCA_PML_CM_SEND_REQUEST_START_SETUP(&(sendreq)->req_send); \
|
|
if (sendreq->req_send.req_send_mode == MCA_PML_BASE_SEND_BUFFERED) { \
|
|
MCA_PML_CM_HVY_SEND_REQUEST_BSEND_ALLOC(sendreq, ret); \
|
|
} \
|
|
if (OMPI_SUCCESS == ret) { \
|
|
ret = OMPI_MTL_CALL(isend(ompi_mtl, \
|
|
sendreq->req_send.req_base.req_comm, \
|
|
sendreq->req_peer, \
|
|
sendreq->req_tag, \
|
|
&sendreq->req_send.req_base.req_convertor, \
|
|
sendreq->req_send.req_send_mode, \
|
|
sendreq->req_blocking, \
|
|
&sendreq->req_mtl)); \
|
|
if(OMPI_SUCCESS == ret && \
|
|
sendreq->req_send.req_send_mode == MCA_PML_BASE_SEND_BUFFERED) { \
|
|
sendreq->req_send.req_base.req_ompi.req_status.MPI_ERROR = 0; \
|
|
ompi_request_complete(&(sendreq)->req_send.req_base.req_ompi, true); \
|
|
} \
|
|
} \
|
|
} while (0)
|
|
|
|
/*
|
|
* The PML has completed a send request. Note that this request
|
|
* may have been orphaned by the user or have already completed
|
|
* at the MPI level.
|
|
* This macro will never be called directly from the upper level, as it should
|
|
* only be an internal call to the PML.
|
|
*/
|
|
#define MCA_PML_CM_HVY_SEND_REQUEST_PML_COMPLETE(sendreq) \
|
|
do { \
|
|
assert( false == sendreq->req_send.req_base.req_pml_complete ); \
|
|
\
|
|
if (sendreq->req_send.req_send_mode == MCA_PML_BASE_SEND_BUFFERED && \
|
|
sendreq->req_count > 0 ) { \
|
|
mca_pml_base_bsend_request_free(sendreq->req_buff); \
|
|
} \
|
|
\
|
|
OPAL_THREAD_LOCK(&ompi_request_lock); \
|
|
if( false == sendreq->req_send.req_base.req_ompi.req_complete ) { \
|
|
/* Should only be called for long messages (maybe synchronous) */ \
|
|
ompi_request_complete(&(sendreq->req_send.req_base.req_ompi), true); \
|
|
} \
|
|
sendreq->req_send.req_base.req_pml_complete = true; \
|
|
\
|
|
if( sendreq->req_send.req_base.req_free_called ) { \
|
|
MCA_PML_CM_HVY_SEND_REQUEST_RETURN( sendreq ); \
|
|
} else { \
|
|
if(sendreq->req_send.req_base.req_ompi.req_persistent) { \
|
|
/* rewind convertor */ \
|
|
size_t offset = 0; \
|
|
ompi_convertor_set_position(&sendreq->req_send.req_base.req_convertor, \
|
|
&offset); \
|
|
} \
|
|
} \
|
|
OPAL_THREAD_UNLOCK(&ompi_request_lock); \
|
|
} while (0)
|
|
|
|
|
|
/*
|
|
* Release resources associated with a request
|
|
*/
|
|
#define MCA_PML_CM_HVY_SEND_REQUEST_RETURN(sendreq) \
|
|
{ \
|
|
/* Let the base handle the reference counts */ \
|
|
OBJ_RELEASE(sendreq->req_send.req_base.req_datatype); \
|
|
OBJ_RELEASE(sendreq->req_send.req_base.req_comm); \
|
|
OMPI_REQUEST_FINI(&sendreq->req_send.req_base.req_ompi); \
|
|
ompi_convertor_cleanup( &(sendreq->req_send.req_base.req_convertor) ); \
|
|
OMPI_FREE_LIST_RETURN( &mca_pml_base_send_requests, \
|
|
(ompi_free_list_item_t*)sendreq); \
|
|
}
|
|
|
|
/*
|
|
* The PML has completed a send request. Note that this request
|
|
* may have been orphaned by the user or have already completed
|
|
* at the MPI level.
|
|
* This macro will never be called directly from the upper level, as it should
|
|
* only be an internal call to the PML.
|
|
*/
|
|
#define MCA_PML_CM_THIN_SEND_REQUEST_PML_COMPLETE(sendreq) \
|
|
do { \
|
|
assert( false == sendreq->req_send.req_base.req_pml_complete ); \
|
|
\
|
|
OPAL_THREAD_LOCK(&ompi_request_lock); \
|
|
if( false == sendreq->req_send.req_base.req_ompi.req_complete ) { \
|
|
/* Should only be called for long messages (maybe synchronous) */ \
|
|
ompi_request_complete(&(sendreq->req_send.req_base.req_ompi), true); \
|
|
} \
|
|
sendreq->req_send.req_base.req_pml_complete = true; \
|
|
\
|
|
if( sendreq->req_send.req_base.req_free_called ) { \
|
|
MCA_PML_CM_THIN_SEND_REQUEST_RETURN( sendreq ); \
|
|
} \
|
|
OPAL_THREAD_UNLOCK(&ompi_request_lock); \
|
|
} while (0)
|
|
|
|
|
|
/*
|
|
* Release resources associated with a request
|
|
*/
|
|
#define MCA_PML_CM_THIN_SEND_REQUEST_RETURN(sendreq) \
|
|
{ \
|
|
/* Let the base handle the reference counts */ \
|
|
OBJ_RELEASE(sendreq->req_send.req_base.req_datatype); \
|
|
OBJ_RELEASE(sendreq->req_send.req_base.req_comm); \
|
|
OMPI_REQUEST_FINI(&sendreq->req_send.req_base.req_ompi); \
|
|
ompi_convertor_cleanup( &(sendreq->req_send.req_base.req_convertor) ); \
|
|
OMPI_FREE_LIST_RETURN( &mca_pml_base_send_requests, \
|
|
(ompi_free_list_item_t*)sendreq); \
|
|
}
|
|
|
|
extern void
|
|
mca_pml_cm_send_request_completion(struct mca_mtl_request_t *mtl_request);
|
|
|
|
#endif
|