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openmpi/ompi/mca/pml/ob1/pml_ob1_recvreq.h
Nathan Hjelm 1282e98a01 opal/asm: rename existing arithmetic atomic functions 
This commit renames the arithmetic atomic operations in opal to
indicate that they return the new value not the old value. This naming
differentiates these routines from new functions that return the old
value.

Signed-off-by: Nathan Hjelm <hjelmn@lanl.gov>
2017-11-30 10:41:22 -07:00

465 строки
18 KiB
C
Исходник Ответственный История

/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil -*- */
/*
* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
* University Research and Technology
* Corporation. All rights reserved.
* Copyright (c) 2004-2016 The University of Tennessee and The University
* of Tennessee Research Foundation. All rights
* reserved.
* Copyright (c) 2004-2007 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 (c) 2008 UT-Battelle, LLC. All rights reserved.
* Copyright (c) 2011-2015 Los Alamos National Security, LLC. All rights
* reserved.
* Copyright (c) 2014 Research Organization for Information Science
* and Technology (RIST). All rights reserved.
*
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
/**
* @file
*/
#ifndef OMPI_PML_OB1_RECV_REQUEST_H
#define OMPI_PML_OB1_RECV_REQUEST_H
#include "pml_ob1.h"
#include "pml_ob1_rdma.h"
#include "pml_ob1_rdmafrag.h"
#include "ompi/proc/proc.h"
#include "ompi/mca/pml/ob1/pml_ob1_comm.h"
#include "opal/mca/mpool/base/base.h"
#include "ompi/mca/pml/base/pml_base_recvreq.h"
BEGIN_C_DECLS
struct mca_pml_ob1_recv_request_t {
mca_pml_base_recv_request_t req_recv;
opal_ptr_t remote_req_send;
int32_t req_lock;
int32_t req_pipeline_depth;
size_t req_bytes_received; /**< amount of data transferred into the user buffer */
size_t req_bytes_expected; /**< local size of the data as suggested by the user */
size_t req_rdma_offset;
size_t req_send_offset;
uint32_t req_rdma_cnt;
uint32_t req_rdma_idx;
bool req_pending;
bool req_ack_sent; /**< whether ack was sent to the sender */
bool req_match_received; /**< Prevent request to be completed prematurely */
opal_mutex_t lock;
mca_bml_base_btl_t *rdma_bml;
mca_btl_base_registration_handle_t *local_handle;
/** The size of this array is set from mca_pml_ob1.max_rdma_per_request */
mca_pml_ob1_com_btl_t req_rdma[];
};
typedef struct mca_pml_ob1_recv_request_t mca_pml_ob1_recv_request_t;
OBJ_CLASS_DECLARATION(mca_pml_ob1_recv_request_t);
static inline bool lock_recv_request(mca_pml_ob1_recv_request_t *recvreq)
{
return OPAL_THREAD_ADD_FETCH32(&recvreq->req_lock, 1) == 1;
}
static inline bool unlock_recv_request(mca_pml_ob1_recv_request_t *recvreq)
{
return OPAL_THREAD_ADD_FETCH32(&recvreq->req_lock, -1) == 0;
}
/**
* Allocate a recv request from the modules free list.
*
* @param rc (OUT) OMPI_SUCCESS or error status on failure.
* @return Receive request.
*/
#define MCA_PML_OB1_RECV_REQUEST_ALLOC(recvreq) \
do { \
recvreq = (mca_pml_ob1_recv_request_t *) \
opal_free_list_get (&mca_pml_base_recv_requests); \
} while(0)
/**
* Initialize a receive request with call parameters.
*
* @param request (IN) Receive request.
* @param addr (IN) User buffer.
* @param count (IN) Number of elements of indicated datatype.
* @param datatype (IN) User defined datatype.
* @param src (IN) Source rank w/in the communicator.
* @param tag (IN) User defined tag.
* @param comm (IN) Communicator.
* @param persistent (IN) Is this a ersistent request.
*/
#define MCA_PML_OB1_RECV_REQUEST_INIT( request, \
addr, \
count, \
datatype, \
src, \
tag, \
comm, \
persistent) \
do { \
MCA_PML_BASE_RECV_REQUEST_INIT( &(request)->req_recv, \
addr, \
count, \
datatype, \
src, \
tag, \
comm, \
persistent); \
} while(0)
/**
* Mark the request as completed at MPI level for internal purposes.
*
* @param recvreq (IN) Receive request.
*/
#define MCA_PML_OB1_RECV_REQUEST_MPI_COMPLETE( recvreq ) \
do { \
PERUSE_TRACE_COMM_EVENT( PERUSE_COMM_REQ_COMPLETE, \
&(recvreq->req_recv.req_base), PERUSE_RECV ); \
ompi_request_complete( &(recvreq->req_recv.req_base.req_ompi), true ); \
} while (0)
static inline void mca_pml_ob1_recv_request_fini (mca_pml_ob1_recv_request_t *recvreq)
{
MCA_PML_BASE_RECV_REQUEST_FINI(&recvreq->req_recv);
if ((recvreq)->local_handle) {
mca_bml_base_deregister_mem (recvreq->rdma_bml, recvreq->local_handle);
recvreq->local_handle = NULL;
}
}
/*
* Free the PML receive request
*/
#define MCA_PML_OB1_RECV_REQUEST_RETURN(recvreq) \
{ \
mca_pml_ob1_recv_request_fini (recvreq); \
opal_free_list_return (&mca_pml_base_recv_requests, \
(opal_free_list_item_t*)(recvreq)); \
}
/**
* Complete receive request. Request structure cannot be accessed after calling
* this function any more.
*
* @param recvreq (IN) Receive request.
*/
static inline void
recv_request_pml_complete(mca_pml_ob1_recv_request_t *recvreq)
{
size_t i;
if(false == recvreq->req_recv.req_base.req_pml_complete){
if(recvreq->req_recv.req_bytes_packed > 0) {
PERUSE_TRACE_COMM_EVENT( PERUSE_COMM_REQ_XFER_END,
&recvreq->req_recv.req_base, PERUSE_RECV );
}
for(i = 0; i < recvreq->req_rdma_cnt; i++) {
struct mca_btl_base_registration_handle_t *handle = recvreq->req_rdma[i].btl_reg;
mca_bml_base_btl_t *bml_btl = recvreq->req_rdma[i].bml_btl;
if (NULL != handle) {
mca_bml_base_deregister_mem (bml_btl, handle);
}
}
recvreq->req_rdma_cnt = 0;
if(true == recvreq->req_recv.req_base.req_free_called) {
if( MPI_SUCCESS != recvreq->req_recv.req_base.req_ompi.req_status.MPI_ERROR ) {
ompi_mpi_abort(&ompi_mpi_comm_world.comm, MPI_ERR_REQUEST);
}
MCA_PML_OB1_RECV_REQUEST_RETURN(recvreq);
} else {
/* initialize request status */
recvreq->req_recv.req_base.req_pml_complete = true;
recvreq->req_recv.req_base.req_ompi.req_status._ucount =
recvreq->req_bytes_received;
if (recvreq->req_recv.req_bytes_packed > recvreq->req_bytes_expected) {
recvreq->req_recv.req_base.req_ompi.req_status._ucount =
recvreq->req_recv.req_bytes_packed;
recvreq->req_recv.req_base.req_ompi.req_status.MPI_ERROR =
MPI_ERR_TRUNCATE;
}
if (OPAL_UNLIKELY(recvreq->local_handle)) {
mca_bml_base_deregister_mem (recvreq->rdma_bml, recvreq->local_handle);
recvreq->local_handle = NULL;
}
MCA_PML_OB1_RECV_REQUEST_MPI_COMPLETE(recvreq);
}
}
}
static inline bool
recv_request_pml_complete_check(mca_pml_ob1_recv_request_t *recvreq)
{
#if OPAL_ENABLE_MULTI_THREADS
opal_atomic_rmb();
#endif
if(recvreq->req_match_received &&
recvreq->req_bytes_received >= recvreq->req_recv.req_bytes_packed &&
lock_recv_request(recvreq)) {
recv_request_pml_complete(recvreq);
return true;
}
return false;
}
extern void mca_pml_ob1_recv_req_start(mca_pml_ob1_recv_request_t *req);
#define MCA_PML_OB1_RECV_REQUEST_START(r) mca_pml_ob1_recv_req_start(r)
static inline void prepare_recv_req_converter(mca_pml_ob1_recv_request_t *req)
{
if( req->req_recv.req_base.req_datatype->super.size | req->req_recv.req_base.req_count ) {
opal_convertor_copy_and_prepare_for_recv(
req->req_recv.req_base.req_proc->super.proc_convertor,
&(req->req_recv.req_base.req_datatype->super),
req->req_recv.req_base.req_count,
req->req_recv.req_base.req_addr,
0,
&req->req_recv.req_base.req_convertor);
opal_convertor_get_unpacked_size(&req->req_recv.req_base.req_convertor,
&req->req_bytes_expected);
}
}
#define MCA_PML_OB1_RECV_REQUEST_MATCHED(request, hdr) \
recv_req_matched(request, hdr)
static inline void recv_req_matched(mca_pml_ob1_recv_request_t *req,
mca_pml_ob1_match_hdr_t *hdr)
{
req->req_recv.req_base.req_ompi.req_status.MPI_SOURCE = hdr->hdr_src;
req->req_recv.req_base.req_ompi.req_status.MPI_TAG = hdr->hdr_tag;
req->req_match_received = true;
#if OPAL_ENABLE_MULTI_THREADS
opal_atomic_wmb();
#endif
if(req->req_recv.req_bytes_packed > 0) {
#if OPAL_ENABLE_HETEROGENEOUS_SUPPORT
if(MPI_ANY_SOURCE == req->req_recv.req_base.req_peer) {
/* non wildcard prepared during post recv */
prepare_recv_req_converter(req);
}
#endif /* OPAL_ENABLE_HETEROGENEOUS_SUPPORT */
PERUSE_TRACE_COMM_EVENT(PERUSE_COMM_REQ_XFER_BEGIN,
&req->req_recv.req_base, PERUSE_RECV);
}
}
/**
*
*/
#define MCA_PML_OB1_RECV_REQUEST_UNPACK( request, \
segments, \
num_segments, \
seg_offset, \
data_offset, \
bytes_received, \
bytes_delivered) \
do { \
bytes_delivered = 0; \
if(request->req_recv.req_bytes_packed > 0) { \
struct iovec iov[MCA_BTL_DES_MAX_SEGMENTS]; \
uint32_t iov_count = 0; \
size_t max_data = bytes_received; \
size_t n, offset = seg_offset; \
mca_btl_base_segment_t* segment = segments; \
\
for( n = 0; n < num_segments; n++, segment++ ) { \
if(offset >= segment->seg_len) { \
offset -= segment->seg_len; \
} else { \
iov[iov_count].iov_len = segment->seg_len - offset; \
iov[iov_count].iov_base = (IOVBASE_TYPE*) \
((unsigned char*)segment->seg_addr.pval + offset); \
iov_count++; \
offset = 0; \
} \
} \
OPAL_THREAD_LOCK(&request->lock); \
PERUSE_TRACE_COMM_OMPI_EVENT (PERUSE_COMM_REQ_XFER_CONTINUE, \
&(request->req_recv.req_base), max_data, \
PERUSE_RECV); \
opal_convertor_set_position( &(request->req_recv.req_base.req_convertor), \
&data_offset ); \
opal_convertor_unpack( &(request)->req_recv.req_base.req_convertor, \
iov, \
&iov_count, \
&max_data ); \
bytes_delivered = max_data; \
OPAL_THREAD_UNLOCK(&request->lock); \
} \
} while (0)
/**
*
*/
void mca_pml_ob1_recv_request_progress_match(
mca_pml_ob1_recv_request_t* req,
struct mca_btl_base_module_t* btl,
mca_btl_base_segment_t* segments,
size_t num_segments);
/**
*
*/
void mca_pml_ob1_recv_request_progress_frag(
mca_pml_ob1_recv_request_t* req,
struct mca_btl_base_module_t* btl,
mca_btl_base_segment_t* segments,
size_t num_segments);
#if OPAL_CUDA_SUPPORT
void mca_pml_ob1_recv_request_frag_copy_start(
mca_pml_ob1_recv_request_t* req,
struct mca_btl_base_module_t* btl,
mca_btl_base_segment_t* segments,
size_t num_segments,
mca_btl_base_descriptor_t* des);
void mca_pml_ob1_recv_request_frag_copy_finished(struct mca_btl_base_module_t* btl,
struct mca_btl_base_endpoint_t* ep,
struct mca_btl_base_descriptor_t* des,
int status );
#endif /* OPAL_CUDA_SUPPORT */
/**
*
*/
void mca_pml_ob1_recv_request_progress_rndv(
mca_pml_ob1_recv_request_t* req,
struct mca_btl_base_module_t* btl,
mca_btl_base_segment_t* segments,
size_t num_segments);
/**
*
*/
void mca_pml_ob1_recv_request_progress_rget(
mca_pml_ob1_recv_request_t* req,
struct mca_btl_base_module_t* btl,
mca_btl_base_segment_t* segments,
size_t num_segments);
/**
*
*/
void mca_pml_ob1_recv_request_matched_probe(
mca_pml_ob1_recv_request_t* req,
struct mca_btl_base_module_t* btl,
mca_btl_base_segment_t* segments,
size_t num_segments);
/**
*
*/
int mca_pml_ob1_recv_request_schedule_once(
mca_pml_ob1_recv_request_t* req, mca_bml_base_btl_t* start_bml_btl);
static inline int mca_pml_ob1_recv_request_schedule_exclusive(
mca_pml_ob1_recv_request_t* req,
mca_bml_base_btl_t* start_bml_btl)
{
int rc;
do {
rc = mca_pml_ob1_recv_request_schedule_once(req, start_bml_btl);
if(rc == OMPI_ERR_OUT_OF_RESOURCE)
break;
} while(!unlock_recv_request(req));
if(OMPI_SUCCESS == rc)
recv_request_pml_complete_check(req);
return rc;
}
static inline void mca_pml_ob1_recv_request_schedule(
mca_pml_ob1_recv_request_t* req,
mca_bml_base_btl_t* start_bml_btl)
{
if(!lock_recv_request(req))
return;
(void)mca_pml_ob1_recv_request_schedule_exclusive(req, start_bml_btl);
}
#define MCA_PML_OB1_ADD_ACK_TO_PENDING(P, S, D, O, Sz) \
do { \
mca_pml_ob1_pckt_pending_t *_pckt; \
\
MCA_PML_OB1_PCKT_PENDING_ALLOC(_pckt); \
_pckt->hdr.hdr_common.hdr_type = MCA_PML_OB1_HDR_TYPE_ACK; \
_pckt->hdr.hdr_ack.hdr_src_req.lval = (S); \
_pckt->hdr.hdr_ack.hdr_dst_req.pval = (D); \
_pckt->hdr.hdr_ack.hdr_send_offset = (O); \
_pckt->hdr.hdr_ack.hdr_send_size = (Sz); \
_pckt->proc = (P); \
_pckt->bml_btl = NULL; \
OPAL_THREAD_LOCK(&mca_pml_ob1.lock); \
opal_list_append(&mca_pml_ob1.pckt_pending, \
(opal_list_item_t*)_pckt); \
OPAL_THREAD_UNLOCK(&mca_pml_ob1.lock); \
} while(0)
int mca_pml_ob1_recv_request_ack_send_btl(ompi_proc_t* proc,
mca_bml_base_btl_t* bml_btl, uint64_t hdr_src_req, void *hdr_dst_req,
uint64_t hdr_rdma_offset, uint64_t size, bool nordma);
static inline int mca_pml_ob1_recv_request_ack_send(ompi_proc_t* proc,
uint64_t hdr_src_req, void *hdr_dst_req, uint64_t hdr_send_offset,
uint64_t size, bool nordma)
{
size_t i;
mca_bml_base_btl_t* bml_btl;
mca_bml_base_endpoint_t* endpoint = mca_bml_base_get_endpoint (proc);
assert (NULL != endpoint);
for(i = 0; i < mca_bml_base_btl_array_get_size(&endpoint->btl_eager); i++) {
bml_btl = mca_bml_base_btl_array_get_next(&endpoint->btl_eager);
if(mca_pml_ob1_recv_request_ack_send_btl(proc, bml_btl, hdr_src_req,
hdr_dst_req, hdr_send_offset, size, nordma) == OMPI_SUCCESS)
return OMPI_SUCCESS;
}
MCA_PML_OB1_ADD_ACK_TO_PENDING(proc, hdr_src_req, hdr_dst_req,
hdr_send_offset, size);
return OMPI_ERR_OUT_OF_RESOURCE;
}
int mca_pml_ob1_recv_request_get_frag(mca_pml_ob1_rdma_frag_t* frag);
/* This function tries to continue recvreq that stuck due to resource
* unavailability. Recvreq is added to recv_pending list if scheduling of put
* operation cannot be accomplished for some reason. */
void mca_pml_ob1_recv_request_process_pending(void);
END_C_DECLS
#endif
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