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openmpi/ompi/mca/pml/cm/pml_cm_sendreq.h
George Bosilca 433f8a7694 This patch bring full support for message queues in Open MPI. Now the send and
receive queues are shared among all PMLs, they are declared in the base PML,
and the selected PML is in charge of initializing and releasing them. 

The CM PML is slightly different compared with OB1 or DR. Internally it use
2 different types of requests: light and heavy. However, now with this patch
both types of requests are stored in the same queue, and cast appropriately
on the allocation macro. This means we might use less memory than we allocate,
but in exchange we got full support for most of the parallel debuggers.

Another thing with this patch, is that now for all PML (CM included) the basic
PML requests start with the same fields, and they are declared in the same order
in the request structure. Moreover, the fields have been moved in such a way
that only one volatile/atomic will exist per line of cache (hopefully).

This commit was SVN r15346.
2007-07-10 22:16:38 +00:00

355 строки
21 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;
OMPI_DECLSPEC 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;
OMPI_DECLSPEC 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;
OMPI_DECLSPEC 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; \
} \
} 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; \
} \
}
#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; \
MCA_PML_BASE_REQUEST_MPI_COMPLETE(&(sendreq)->req_send.req_base.req_ompi); \
} \
} \
} 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) */ \
MCA_PML_BASE_REQUEST_MPI_COMPLETE(&(sendreq->req_send.req_base.req_ompi)); \
} \
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) */ \
MCA_PML_BASE_REQUEST_MPI_COMPLETE(&(sendreq->req_send.req_base.req_ompi)); \
} \
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); \
}
#endif