+++ /dev/null
-/* Copyright (c) 2007-2017. The SimGrid Team. All rights reserved. */
-
-/* This program is free software; you can redistribute it and/or modify it
- * under the terms of the license (GNU LGPL) which comes with this package. */
-
-#include "src/smpi/private.h"
-#include "src/smpi/smpi_coll.hpp"
-#include "src/smpi/smpi_comm.hpp"
-#include "src/smpi/smpi_datatype.hpp"
-#include "src/smpi/smpi_info.hpp"
-#include "src/smpi/smpi_keyvals.hpp"
-#include "src/smpi/smpi_process.hpp"
-#include "src/smpi/smpi_request.hpp"
-#include "src/smpi/smpi_win.hpp"
-
-XBT_LOG_NEW_DEFAULT_SUBCATEGORY(smpi_rma, smpi, "Logging specific to SMPI (RMA operations)");
-
-namespace simgrid{
-namespace smpi{
-std::unordered_map<int, smpi_key_elem> Win::keyvals_;
-int Win::keyval_id_=0;
-
-Win::Win(void *base, MPI_Aint size, int disp_unit, MPI_Info info, MPI_Comm comm, int allocated, int dynamic): base_(base), size_(size), disp_unit_(disp_unit), assert_(0), info_(info), comm_(comm), allocated_(allocated), dynamic_(dynamic){
- int comm_size = comm->size();
- rank_ = comm->rank();
- XBT_DEBUG("Creating window");
- if(info!=MPI_INFO_NULL)
- info->ref();
- name_ = nullptr;
- opened_ = 0;
- group_ = MPI_GROUP_NULL;
- requests_ = new std::vector<MPI_Request>();
- mut_=xbt_mutex_init();
- lock_mut_=xbt_mutex_init();
- atomic_mut_=xbt_mutex_init();
- connected_wins_ = new MPI_Win[comm_size];
- connected_wins_[rank_] = this;
- count_ = 0;
- if(rank_==0){
- bar_ = MSG_barrier_init(comm_size);
- }
- mode_=0;
-
- comm->add_rma_win(this);
-
- Colls::allgather(&(connected_wins_[rank_]), sizeof(MPI_Win), MPI_BYTE, connected_wins_, sizeof(MPI_Win),
- MPI_BYTE, comm);
-
- Colls::bcast(&(bar_), sizeof(msg_bar_t), MPI_BYTE, 0, comm);
-
- Colls::barrier(comm);
-}
-
-Win::~Win(){
- //As per the standard, perform a barrier to ensure every async comm is finished
- MSG_barrier_wait(bar_);
-
- int finished = finish_comms();
- XBT_DEBUG("Win destructor - Finished %d RMA calls", finished);
-
- delete requests_;
- delete[] connected_wins_;
- if (name_ != nullptr){
- xbt_free(name_);
- }
- if(info_!=MPI_INFO_NULL){
- MPI_Info_free(&info_);
- }
-
- comm_->remove_rma_win(this);
-
- Colls::barrier(comm_);
- int rank=comm_->rank();
- if(rank == 0)
- MSG_barrier_destroy(bar_);
- xbt_mutex_destroy(mut_);
- xbt_mutex_destroy(lock_mut_);
- xbt_mutex_destroy(atomic_mut_);
-
- if(allocated_ !=0)
- xbt_free(base_);
-
- cleanup_attr<Win>();
-}
-
-int Win::attach (void *base, MPI_Aint size){
- if (not(base_ == MPI_BOTTOM || base_ == 0))
- return MPI_ERR_ARG;
- base_=0;//actually the address will be given in the RMA calls, as being the disp.
- size_+=size;
- return MPI_SUCCESS;
-}
-
-int Win::detach (void *base){
- base_=MPI_BOTTOM;
- size_=-1;
- return MPI_SUCCESS;
-}
-
-void Win::get_name(char* name, int* length){
- if(name_==nullptr){
- *length=0;
- name=nullptr;
- return;
- }
- *length = strlen(name_);
- strncpy(name, name_, *length+1);
-}
-
-void Win::get_group(MPI_Group* group){
- if(comm_ != MPI_COMM_NULL){
- *group = comm_->group();
- } else {
- *group = MPI_GROUP_NULL;
- }
-}
-
-MPI_Info Win::info(){
- if(info_== MPI_INFO_NULL)
- info_ = new Info();
- info_->ref();
- return info_;
-}
-
-int Win::rank(){
- return rank_;
-}
-
-MPI_Aint Win::size(){
- return size_;
-}
-
-void* Win::base(){
- return base_;
-}
-
-int Win::disp_unit(){
- return disp_unit_;
-}
-
-int Win::dynamic(){
- return dynamic_;
-}
-
-void Win::set_info(MPI_Info info){
- if(info_!= MPI_INFO_NULL)
- info->ref();
- info_=info;
-}
-
-void Win::set_name(char* name){
- name_ = xbt_strdup(name);
-}
-
-int Win::fence(int assert)
-{
- XBT_DEBUG("Entering fence");
- if (opened_ == 0)
- opened_=1;
- if (assert != MPI_MODE_NOPRECEDE) {
- // This is not the first fence => finalize what came before
- MSG_barrier_wait(bar_);
- xbt_mutex_acquire(mut_);
- // This (simulated) mutex ensures that no process pushes to the vector of requests during the waitall.
- // Without this, the vector could get redimensionned when another process pushes.
- // This would result in the array used by Request::waitall() to be invalidated.
- // Another solution would be to copy the data and cleanup the vector *before* Request::waitall
- std::vector<MPI_Request> *reqs = requests_;
- int size = static_cast<int>(reqs->size());
- // start all requests that have been prepared by another process
- if (size > 0) {
- MPI_Request* treqs = &(*reqs)[0];
- Request::waitall(size, treqs, MPI_STATUSES_IGNORE);
- }
- count_=0;
- xbt_mutex_release(mut_);
- }
-
- if(assert==MPI_MODE_NOSUCCEED)//there should be no ops after this one, tell we are closed.
- opened_=0;
- assert_ = assert;
-
- MSG_barrier_wait(bar_);
- XBT_DEBUG("Leaving fence");
-
- return MPI_SUCCESS;
-}
-
-int Win::put( void *origin_addr, int origin_count, MPI_Datatype origin_datatype, int target_rank,
- MPI_Aint target_disp, int target_count, MPI_Datatype target_datatype, MPI_Request* request)
-{
- //get receiver pointer
- MPI_Win recv_win = connected_wins_[target_rank];
-
- if(opened_==0){//check that post/start has been done
- // no fence or start .. lock ok ?
- int locked=0;
- for(auto it : recv_win->lockers_)
- if (it == comm_->rank())
- locked = 1;
- if(locked != 1)
- return MPI_ERR_WIN;
- }
-
- if(target_count*target_datatype->get_extent()>recv_win->size_)
- return MPI_ERR_ARG;
-
- void* recv_addr = static_cast<void*> ( static_cast<char*>(recv_win->base_) + target_disp * recv_win->disp_unit_);
- XBT_DEBUG("Entering MPI_Put to %d", target_rank);
-
- if(target_rank != comm_->rank()){
- //prepare send_request
- MPI_Request sreq = Request::rma_send_init(origin_addr, origin_count, origin_datatype, smpi_process()->index(),
- comm_->group()->index(target_rank), SMPI_RMA_TAG+1, comm_, MPI_OP_NULL);
-
- //prepare receiver request
- MPI_Request rreq = Request::rma_recv_init(recv_addr, target_count, target_datatype, smpi_process()->index(),
- comm_->group()->index(target_rank), SMPI_RMA_TAG+1, recv_win->comm_, MPI_OP_NULL);
-
- //start send
- sreq->start();
-
- if(request!=nullptr){
- *request=sreq;
- }else{
- xbt_mutex_acquire(mut_);
- requests_->push_back(sreq);
- xbt_mutex_release(mut_);
- }
-
- //push request to receiver's win
- xbt_mutex_acquire(recv_win->mut_);
- recv_win->requests_->push_back(rreq);
- rreq->start();
- xbt_mutex_release(recv_win->mut_);
-
- }else{
- Datatype::copy(origin_addr, origin_count, origin_datatype, recv_addr, target_count, target_datatype);
- if(request!=nullptr)
- *request = MPI_REQUEST_NULL;
- }
-
- return MPI_SUCCESS;
-}
-
-int Win::get( void *origin_addr, int origin_count, MPI_Datatype origin_datatype, int target_rank,
- MPI_Aint target_disp, int target_count, MPI_Datatype target_datatype, MPI_Request* request)
-{
- //get sender pointer
- MPI_Win send_win = connected_wins_[target_rank];
-
- if(opened_==0){//check that post/start has been done
- // no fence or start .. lock ok ?
- int locked=0;
- for(auto it : send_win->lockers_)
- if (it == comm_->rank())
- locked = 1;
- if(locked != 1)
- return MPI_ERR_WIN;
- }
-
- if(target_count*target_datatype->get_extent()>send_win->size_)
- return MPI_ERR_ARG;
-
- void* send_addr = static_cast<void*>(static_cast<char*>(send_win->base_) + target_disp * send_win->disp_unit_);
- XBT_DEBUG("Entering MPI_Get from %d", target_rank);
-
- if(target_rank != comm_->rank()){
- //prepare send_request
- MPI_Request sreq = Request::rma_send_init(send_addr, target_count, target_datatype,
- comm_->group()->index(target_rank), smpi_process()->index(), SMPI_RMA_TAG+2, send_win->comm_,
- MPI_OP_NULL);
-
- //prepare receiver request
- MPI_Request rreq = Request::rma_recv_init(origin_addr, origin_count, origin_datatype,
- comm_->group()->index(target_rank), smpi_process()->index(), SMPI_RMA_TAG+2, comm_,
- MPI_OP_NULL);
-
- //start the send, with another process than us as sender.
- sreq->start();
- //push request to receiver's win
- xbt_mutex_acquire(send_win->mut_);
- send_win->requests_->push_back(sreq);
- xbt_mutex_release(send_win->mut_);
-
- //start recv
- rreq->start();
-
- if(request!=nullptr){
- *request=rreq;
- }else{
- xbt_mutex_acquire(mut_);
- requests_->push_back(rreq);
- xbt_mutex_release(mut_);
- }
-
- }else{
- Datatype::copy(send_addr, target_count, target_datatype, origin_addr, origin_count, origin_datatype);
- if(request!=nullptr)
- *request=MPI_REQUEST_NULL;
- }
-
- return MPI_SUCCESS;
-}
-
-
-int Win::accumulate( void *origin_addr, int origin_count, MPI_Datatype origin_datatype, int target_rank,
- MPI_Aint target_disp, int target_count, MPI_Datatype target_datatype, MPI_Op op, MPI_Request* request)
-{
-
- //get receiver pointer
- MPI_Win recv_win = connected_wins_[target_rank];
-
- if(opened_==0){//check that post/start has been done
- // no fence or start .. lock ok ?
- int locked=0;
- for(auto it : recv_win->lockers_)
- if (it == comm_->rank())
- locked = 1;
- if(locked != 1)
- return MPI_ERR_WIN;
- }
- //FIXME: local version
-
- if(target_count*target_datatype->get_extent()>recv_win->size_)
- return MPI_ERR_ARG;
-
- void* recv_addr = static_cast<void*>(static_cast<char*>(recv_win->base_) + target_disp * recv_win->disp_unit_);
- XBT_DEBUG("Entering MPI_Accumulate to %d", target_rank);
- //As the tag will be used for ordering of the operations, substract count from it (to avoid collisions with other SMPI tags, SMPI_RMA_TAG is set below all the other ones we use )
- //prepare send_request
-
- MPI_Request sreq = Request::rma_send_init(origin_addr, origin_count, origin_datatype,
- smpi_process()->index(), comm_->group()->index(target_rank), SMPI_RMA_TAG-3-count_, comm_, op);
-
- //prepare receiver request
- MPI_Request rreq = Request::rma_recv_init(recv_addr, target_count, target_datatype,
- smpi_process()->index(), comm_->group()->index(target_rank), SMPI_RMA_TAG-3-count_, recv_win->comm_, op);
-
- count_++;
-
- //start send
- sreq->start();
- //push request to receiver's win
- xbt_mutex_acquire(recv_win->mut_);
- recv_win->requests_->push_back(rreq);
- rreq->start();
- xbt_mutex_release(recv_win->mut_);
-
- if(request!=nullptr){
- *request=sreq;
- }else{
- xbt_mutex_acquire(mut_);
- requests_->push_back(sreq);
- xbt_mutex_release(mut_);
- }
-
- return MPI_SUCCESS;
-}
-
-int Win::get_accumulate( void *origin_addr, int origin_count, MPI_Datatype origin_datatype, void *result_addr,
- int result_count, MPI_Datatype result_datatype, int target_rank, MPI_Aint target_disp, int target_count,
- MPI_Datatype target_datatype, MPI_Op op, MPI_Request* request){
-
- //get sender pointer
- MPI_Win send_win = connected_wins_[target_rank];
-
- if(opened_==0){//check that post/start has been done
- // no fence or start .. lock ok ?
- int locked=0;
- for(auto it : send_win->lockers_)
- if (it == comm_->rank())
- locked = 1;
- if(locked != 1)
- return MPI_ERR_WIN;
- }
-
- if(target_count*target_datatype->get_extent()>send_win->size_)
- return MPI_ERR_ARG;
-
- XBT_DEBUG("Entering MPI_Get_accumulate from %d", target_rank);
- //need to be sure ops are correctly ordered, so finish request here ? slow.
- MPI_Request req;
- xbt_mutex_acquire(send_win->atomic_mut_);
- get(result_addr, result_count, result_datatype, target_rank,
- target_disp, target_count, target_datatype, &req);
- if (req != MPI_REQUEST_NULL)
- Request::wait(&req, MPI_STATUS_IGNORE);
- if(op!=MPI_NO_OP)
- accumulate(origin_addr, origin_count, origin_datatype, target_rank,
- target_disp, target_count, target_datatype, op, &req);
- if (req != MPI_REQUEST_NULL)
- Request::wait(&req, MPI_STATUS_IGNORE);
- xbt_mutex_release(send_win->atomic_mut_);
- return MPI_SUCCESS;
-
-}
-
-int Win::compare_and_swap(void *origin_addr, void *compare_addr,
- void *result_addr, MPI_Datatype datatype, int target_rank,
- MPI_Aint target_disp){
- //get sender pointer
- MPI_Win send_win = connected_wins_[target_rank];
-
- if(opened_==0){//check that post/start has been done
- // no fence or start .. lock ok ?
- int locked=0;
- for(auto it : send_win->lockers_)
- if (it == comm_->rank())
- locked = 1;
- if(locked != 1)
- return MPI_ERR_WIN;
- }
-
- XBT_DEBUG("Entering MPI_Compare_and_swap with %d", target_rank);
- MPI_Request req;
- xbt_mutex_acquire(send_win->atomic_mut_);
- get(result_addr, 1, datatype, target_rank,
- target_disp, 1, datatype, &req);
- if (req != MPI_REQUEST_NULL)
- Request::wait(&req, MPI_STATUS_IGNORE);
- if (not memcmp(result_addr, compare_addr, datatype->get_extent())) {
- put(origin_addr, 1, datatype, target_rank,
- target_disp, 1, datatype);
- }
- xbt_mutex_release(send_win->atomic_mut_);
- return MPI_SUCCESS;
-}
-
-int Win::start(MPI_Group group, int assert){
- /* From MPI forum advices
- The call to MPI_WIN_COMPLETE does not return until the put call has completed at the origin; and the target window
- will be accessed by the put operation only after the call to MPI_WIN_START has matched a call to MPI_WIN_POST by
- the target process. This still leaves much choice to implementors. The call to MPI_WIN_START can block until the
- matching call to MPI_WIN_POST occurs at all target processes. One can also have implementations where the call to
- MPI_WIN_START is nonblocking, but the call to MPI_PUT blocks until the matching call to MPI_WIN_POST occurred; or
- implementations where the first two calls are nonblocking, but the call to MPI_WIN_COMPLETE blocks until the call
- to MPI_WIN_POST occurred; or even implementations where all three calls can complete before any target process
- called MPI_WIN_POST --- the data put must be buffered, in this last case, so as to allow the put to complete at the
- origin ahead of its completion at the target. However, once the call to MPI_WIN_POST is issued, the sequence above
- must complete, without further dependencies. */
-
- //naive, blocking implementation.
- int i = 0;
- int j = 0;
- int size = group->size();
- MPI_Request* reqs = xbt_new0(MPI_Request, size);
-
- while (j != size) {
- int src = group->index(j);
- if (src != smpi_process()->index() && src != MPI_UNDEFINED) {
- reqs[i] = Request::irecv_init(nullptr, 0, MPI_CHAR, src, SMPI_RMA_TAG + 4, MPI_COMM_WORLD);
- i++;
- }
- j++;
- }
- size=i;
- Request::startall(size, reqs);
- Request::waitall(size, reqs, MPI_STATUSES_IGNORE);
- for(i=0;i<size;i++){
- Request::unref(&reqs[i]);
- }
- xbt_free(reqs);
- opened_++; //we're open for business !
- group_=group;
- group->ref();
- return MPI_SUCCESS;
-}
-
-int Win::post(MPI_Group group, int assert){
- //let's make a synchronous send here
- int i = 0;
- int j = 0;
- int size = group->size();
- MPI_Request* reqs = xbt_new0(MPI_Request, size);
-
- while(j!=size){
- int dst=group->index(j);
- if(dst!=smpi_process()->index() && dst!=MPI_UNDEFINED){
- reqs[i]=Request::send_init(nullptr, 0, MPI_CHAR, dst, SMPI_RMA_TAG+4, MPI_COMM_WORLD);
- i++;
- }
- j++;
- }
- size=i;
-
- Request::startall(size, reqs);
- Request::waitall(size, reqs, MPI_STATUSES_IGNORE);
- for(i=0;i<size;i++){
- Request::unref(&reqs[i]);
- }
- xbt_free(reqs);
- opened_++; //we're open for business !
- group_=group;
- group->ref();
- return MPI_SUCCESS;
-}
-
-int Win::complete(){
- if(opened_==0)
- xbt_die("Complete called on already opened MPI_Win");
-
- XBT_DEBUG("Entering MPI_Win_Complete");
- int i = 0;
- int j = 0;
- int size = group_->size();
- MPI_Request* reqs = xbt_new0(MPI_Request, size);
-
- while(j!=size){
- int dst=group_->index(j);
- if(dst!=smpi_process()->index() && dst!=MPI_UNDEFINED){
- reqs[i]=Request::send_init(nullptr, 0, MPI_CHAR, dst, SMPI_RMA_TAG+5, MPI_COMM_WORLD);
- i++;
- }
- j++;
- }
- size=i;
- XBT_DEBUG("Win_complete - Sending sync messages to %d processes", size);
- Request::startall(size, reqs);
- Request::waitall(size, reqs, MPI_STATUSES_IGNORE);
-
- for(i=0;i<size;i++){
- Request::unref(&reqs[i]);
- }
- xbt_free(reqs);
-
- int finished = finish_comms();
- XBT_DEBUG("Win_complete - Finished %d RMA calls", finished);
-
- Group::unref(group_);
- opened_--; //we're closed for business !
- return MPI_SUCCESS;
-}
-
-int Win::wait(){
- //naive, blocking implementation.
- XBT_DEBUG("Entering MPI_Win_Wait");
- int i = 0;
- int j = 0;
- int size = group_->size();
- MPI_Request* reqs = xbt_new0(MPI_Request, size);
-
- while(j!=size){
- int src=group_->index(j);
- if(src!=smpi_process()->index() && src!=MPI_UNDEFINED){
- reqs[i]=Request::irecv_init(nullptr, 0, MPI_CHAR, src,SMPI_RMA_TAG+5, MPI_COMM_WORLD);
- i++;
- }
- j++;
- }
- size=i;
- XBT_DEBUG("Win_wait - Receiving sync messages from %d processes", size);
- Request::startall(size, reqs);
- Request::waitall(size, reqs, MPI_STATUSES_IGNORE);
- for(i=0;i<size;i++){
- Request::unref(&reqs[i]);
- }
- xbt_free(reqs);
- int finished = finish_comms();
- XBT_DEBUG("Win_wait - Finished %d RMA calls", finished);
-
- Group::unref(group_);
- opened_--; //we're opened for business !
- return MPI_SUCCESS;
-}
-
-int Win::lock(int lock_type, int rank, int assert){
- MPI_Win target_win = connected_wins_[rank];
-
- if ((lock_type == MPI_LOCK_EXCLUSIVE && target_win->mode_ != MPI_LOCK_SHARED)|| target_win->mode_ == MPI_LOCK_EXCLUSIVE){
- xbt_mutex_acquire(target_win->lock_mut_);
- target_win->mode_+= lock_type;//add the lock_type to differentiate case when we are switching from EXCLUSIVE to SHARED (no release needed in the unlock)
- if(lock_type == MPI_LOCK_SHARED){//the window used to be exclusive, it's now shared.
- xbt_mutex_release(target_win->lock_mut_);
- }
- } else if (not(target_win->mode_ == MPI_LOCK_SHARED && lock_type == MPI_LOCK_EXCLUSIVE))
- target_win->mode_ += lock_type; // don't set to exclusive if it's already shared
-
- target_win->lockers_.push_back(comm_->rank());
-
- int finished = finish_comms(rank);
- XBT_DEBUG("Win_lock %d - Finished %d RMA calls", rank, finished);
- finished = target_win->finish_comms(rank_);
- XBT_DEBUG("Win_lock target %d - Finished %d RMA calls", rank, finished);
- return MPI_SUCCESS;
-}
-
-int Win::lock_all(int assert){
- int i=0;
- int retval = MPI_SUCCESS;
- for (i=0; i<comm_->size();i++){
- int ret = this->lock(MPI_LOCK_SHARED, i, assert);
- if(ret != MPI_SUCCESS)
- retval = ret;
- }
- return retval;
-}
-
-int Win::unlock(int rank){
- MPI_Win target_win = connected_wins_[rank];
- int target_mode = target_win->mode_;
- target_win->mode_= 0;
- target_win->lockers_.remove(comm_->rank());
- if (target_mode==MPI_LOCK_EXCLUSIVE){
- xbt_mutex_release(target_win->lock_mut_);
- }
-
- int finished = finish_comms(rank);
- XBT_DEBUG("Win_unlock %d - Finished %d RMA calls", rank, finished);
- finished = target_win->finish_comms(rank_);
- XBT_DEBUG("Win_unlock target %d - Finished %d RMA calls", rank, finished);
- return MPI_SUCCESS;
-}
-
-int Win::unlock_all(){
- int i=0;
- int retval = MPI_SUCCESS;
- for (i=0; i<comm_->size();i++){
- int ret = this->unlock(i);
- if(ret != MPI_SUCCESS)
- retval = ret;
- }
- return retval;
-}
-
-int Win::flush(int rank){
- MPI_Win target_win = connected_wins_[rank];
- int finished = finish_comms(rank);
- XBT_DEBUG("Win_flush on local %d - Finished %d RMA calls", rank_, finished);
- finished = target_win->finish_comms(rank_);
- XBT_DEBUG("Win_flush on remote %d - Finished %d RMA calls", rank, finished);
- return MPI_SUCCESS;
-}
-
-int Win::flush_local(int rank){
- int finished = finish_comms(rank);
- XBT_DEBUG("Win_flush_local for rank %d - Finished %d RMA calls", rank, finished);
- return MPI_SUCCESS;
-}
-
-int Win::flush_all(){
- int i=0;
- int finished = 0;
- finished = finish_comms();
- XBT_DEBUG("Win_flush_all on local - Finished %d RMA calls", finished);
- for (i=0; i<comm_->size();i++){
- finished = connected_wins_[i]->finish_comms(rank_);
- XBT_DEBUG("Win_flush_all on %d - Finished %d RMA calls", i, finished);
- }
- return MPI_SUCCESS;
-}
-
-int Win::flush_local_all(){
- int finished = finish_comms();
- XBT_DEBUG("Win_flush_local_all - Finished %d RMA calls", finished);
- return MPI_SUCCESS;
-}
-
-Win* Win::f2c(int id){
- return static_cast<Win*>(F2C::f2c(id));
-}
-
-
-int Win::finish_comms(){
- xbt_mutex_acquire(mut_);
- //Finish own requests
- std::vector<MPI_Request> *reqqs = requests_;
- int size = static_cast<int>(reqqs->size());
- if (size > 0) {
- MPI_Request* treqs = &(*reqqs)[0];
- Request::waitall(size, treqs, MPI_STATUSES_IGNORE);
- reqqs->clear();
- }
- xbt_mutex_release(mut_);
- return size;
-}
-
-int Win::finish_comms(int rank){
- xbt_mutex_acquire(mut_);
- //Finish own requests
- std::vector<MPI_Request> *reqqs = requests_;
- int size = static_cast<int>(reqqs->size());
- if (size > 0) {
- size = 0;
- std::vector<MPI_Request> myreqqs;
- std::vector<MPI_Request>::iterator iter = reqqs->begin();
- while (iter != reqqs->end()){
- if(((*iter)!=MPI_REQUEST_NULL) && (((*iter)->src() == rank) || ((*iter)->dst() == rank))){
- myreqqs.push_back(*iter);
- iter = reqqs->erase(iter);
- size++;
- } else {
- ++iter;
- }
- }
- if(size >0){
- MPI_Request* treqs = &myreqqs[0];
- Request::waitall(size, treqs, MPI_STATUSES_IGNORE);
- myreqqs.clear();
- }
- }
- xbt_mutex_release(mut_);
- return size;
-}
-
-
-}
-}
