-/* Copyright (c) 2007-2019. The SimGrid Team. All rights reserved. */
+/* Copyright (c) 2007-2021. 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 "private.hpp"
#include "simgrid/Exception.hpp"
#include "simgrid/s4u/Exec.hpp"
+#include "simgrid/s4u/Mutex.hpp"
+#include "simgrid/s4u/ConditionVariable.hpp"
#include "smpi_comm.hpp"
#include "smpi_datatype.hpp"
#include "smpi_host.hpp"
#include "src/smpi/include/smpi_actor.hpp"
#include <algorithm>
+#include <array>
XBT_LOG_NEW_DEFAULT_SUBCATEGORY(smpi_request, smpi, "Logging specific to SMPI (request)");
namespace simgrid{
namespace smpi{
-Request::Request(const void* buf, int count, MPI_Datatype datatype, int src, int dst, int tag, MPI_Comm comm, unsigned flags, MPI_Op op)
- : buf_(const_cast<void*>(buf)), old_type_(datatype), src_(src), dst_(dst), tag_(tag), comm_(comm), flags_(flags), op_(op)
+Request::Request(const void* buf, int count, MPI_Datatype datatype, aid_t src, aid_t dst, int tag, MPI_Comm comm,
+ unsigned flags, MPI_Op op)
+ : buf_(const_cast<void*>(buf))
+ , old_buf_(buf_)
+ , type_(datatype)
+ , size_(datatype->size() * count)
+ , src_(src)
+ , dst_(dst)
+ , tag_(tag)
+ , comm_(comm)
+ , flags_(flags)
+ , op_(op)
{
- void *old_buf = nullptr;
-// FIXME Handle the case of a partial shared malloc.
- if ((((flags & MPI_REQ_RECV) != 0) && ((flags & MPI_REQ_ACCUMULATE) != 0)) || (datatype->flags() & DT_FLAG_DERIVED)) {
- // This part handles the problem of non-contiguous memory
- old_buf = const_cast<void*>(buf);
- if (count==0){
- buf_ = nullptr;
- }else {
- buf_ = xbt_malloc(count*datatype->size());
- if ((datatype->flags() & DT_FLAG_DERIVED) && ((flags & MPI_REQ_SEND) != 0)) {
- datatype->serialize(old_buf, buf_, count);
- }
- }
- }
- // This part handles the problem of non-contiguous memory (for the unserialisation at the reception)
- old_buf_ = old_buf;
- size_ = datatype->size() * count;
datatype->ref();
comm_->ref();
if(op != MPI_REPLACE && op != MPI_OP_NULL)
detached_sender_ = nullptr;
real_src_ = 0;
truncated_ = false;
+ unmatched_types_ = false;
real_size_ = 0;
real_tag_ = 0;
if (flags & MPI_REQ_PERSISTENT)
refcount_ = 1;
else
refcount_ = 0;
- cancelled_ = 0;
- generalized_funcs=nullptr;
- nbc_requests_=nullptr;
- nbc_requests_size_=0;
+ init_buffer(count);
+ this->add_f();
}
void Request::ref(){
void Request::unref(MPI_Request* request)
{
- if((*request) != MPI_REQUEST_NULL){
- (*request)->refcount_--;
- if((*request)->refcount_ < 0) {
- (*request)->print_request("wrong refcount");
- xbt_die("Whoops, wrong refcount");
- }
- if((*request)->refcount_==0){
- if ((*request)->flags_ & MPI_REQ_GENERALIZED){
- ((*request)->generalized_funcs)->free_fn(((*request)->generalized_funcs)->extra_state);
- delete (*request)->generalized_funcs;
- }else{
- Comm::unref((*request)->comm_);
- Datatype::unref((*request)->old_type_);
- }
- if ((*request)->op_!=MPI_REPLACE && (*request)->op_!=MPI_OP_NULL)
- Op::unref(&(*request)->op_);
+ xbt_assert(*request != MPI_REQUEST_NULL, "freeing an already free request");
- (*request)->print_request("Destroying");
- delete *request;
- *request = MPI_REQUEST_NULL;
- }else{
- (*request)->print_request("Decrementing");
+ (*request)->refcount_--;
+ if ((*request)->refcount_ < 0) {
+ (*request)->print_request("wrong refcount");
+ xbt_die("Whoops, wrong refcount");
+ }
+ if ((*request)->refcount_ == 0) {
+ if ((*request)->flags_ & MPI_REQ_GENERALIZED) {
+ ((*request)->generalized_funcs)->free_fn(((*request)->generalized_funcs)->extra_state);
+ } else {
+ Comm::unref((*request)->comm_);
+ Datatype::unref((*request)->type_);
}
- }else{
- xbt_die("freeing an already free request");
+ if ((*request)->op_ != MPI_REPLACE && (*request)->op_ != MPI_OP_NULL)
+ Op::unref(&(*request)->op_);
+
+ (*request)->print_request("Destroying");
+ F2C::free_f((*request)->f2c_id());
+ delete *request;
+ *request = MPI_REQUEST_NULL;
+ } else {
+ (*request)->print_request("Decrementing");
}
}
-int Request::match_recv(void* a, void* b, simgrid::kernel::activity::CommImpl*)
+bool Request::match_types(MPI_Datatype stype, MPI_Datatype rtype){
+ bool match = false;
+ if ((stype == rtype) ||
+ //byte and packed always match with anything
+ (stype == MPI_PACKED || rtype == MPI_PACKED || stype == MPI_BYTE || rtype == MPI_BYTE) ||
+ //complex datatypes - we don't properly match these yet, as it would mean checking each subtype recursively.
+ (stype->flags() & DT_FLAG_DERIVED || rtype->flags() & DT_FLAG_DERIVED) ||
+ //duplicated datatypes, check if underlying is ok
+ (stype->duplicated_datatype()!=MPI_DATATYPE_NULL && match_types(stype->duplicated_datatype(), rtype)) ||
+ (rtype->duplicated_datatype()!=MPI_DATATYPE_NULL && match_types(stype, rtype->duplicated_datatype())))
+ match = true;
+ if (!match)
+ XBT_WARN("Mismatched datatypes : sending %s and receiving %s", stype->name().c_str(), rtype->name().c_str());
+ return match;
+}
+
+
+bool Request::match_common(MPI_Request req, MPI_Request sender, MPI_Request receiver)
{
- MPI_Request ref = static_cast<MPI_Request>(a);
- MPI_Request req = static_cast<MPI_Request>(b);
- XBT_DEBUG("Trying to match a recv of src %d against %d, tag %d against %d, id %d against %d",ref->src_,req->src_, ref->tag_, req->tag_,ref->comm_->id(),req->comm_->id());
-
- xbt_assert(ref, "Cannot match recv against null reference");
- xbt_assert(req, "Cannot match recv against null request");
- if((ref->comm_->id()==MPI_UNDEFINED || req->comm_->id() == MPI_UNDEFINED || (ref->comm_->id()==req->comm_->id()))
- && ((ref->src_ == MPI_ANY_SOURCE && (ref->comm_->group()->rank(req->src_) != MPI_UNDEFINED)) || req->src_ == ref->src_)
- && ((ref->tag_ == MPI_ANY_TAG && req->tag_ >=0) || req->tag_ == ref->tag_)){
- //we match, we can transfer some values
- if(ref->src_ == MPI_ANY_SOURCE)
- ref->real_src_ = req->src_;
- if(ref->tag_ == MPI_ANY_TAG)
- ref->real_tag_ = req->tag_;
- if(ref->real_size_ < req->real_size_)
- ref->truncated_ = true;
- if (req->detached_)
- ref->detached_sender_=req; //tie the sender to the receiver, as it is detached and has to be freed in the receiver
- if(req->cancelled_==0)
- req->cancelled_=-1;//mark as uncancellable
+ xbt_assert(sender, "Cannot match against null sender");
+ xbt_assert(receiver, "Cannot match against null receiver");
+ XBT_DEBUG("Trying to match %s of sender src %ld against %ld, tag %d against %d, id %d against %d",
+ (req == receiver ? "send" : "recv"), sender->src_, receiver->src_, sender->tag_, receiver->tag_,
+ sender->comm_->id(), receiver->comm_->id());
+
+ if ((receiver->comm_->id() == MPI_UNDEFINED || sender->comm_->id() == MPI_UNDEFINED ||
+ receiver->comm_->id() == sender->comm_->id()) &&
+ ((receiver->src_ == MPI_ANY_SOURCE && (receiver->comm_->group()->rank(sender->src_) != MPI_UNDEFINED)) ||
+ receiver->src_ == sender->src_) &&
+ ((receiver->tag_ == MPI_ANY_TAG && sender->tag_ >= 0) || receiver->tag_ == sender->tag_)) {
+ // we match, we can transfer some values
+ if (receiver->src_ == MPI_ANY_SOURCE)
+ receiver->real_src_ = sender->src_;
+ if (receiver->tag_ == MPI_ANY_TAG)
+ receiver->real_tag_ = sender->tag_;
+ if ((receiver->flags_ & MPI_REQ_PROBE) == 0 ){
+ if (receiver->real_size_ < sender->real_size_){
+ XBT_DEBUG("Truncating message - should not happen: receiver size : %zu < sender size : %zu", receiver->real_size_, sender->real_size_);
+ receiver->truncated_ = true;
+ } else if (receiver->real_size_ > sender->real_size_){
+ receiver->real_size_=sender->real_size_;
+ }
+ }
+ //0-sized datatypes/counts should not interfere and match
+ if ( sender->real_size_ != 0 && receiver->real_size_ != 0 &&
+ !match_types(sender->type_, receiver->type_))
+ receiver->unmatched_types_ = true;
+ if (sender->detached_)
+ receiver->detached_sender_ = sender; // tie the sender to the receiver, as it is detached and has to be freed in
+ // the receiver
+ req->flags_ |= MPI_REQ_MATCHED; // mark as impossible to cancel anymore
XBT_DEBUG("match succeeded");
- return 1;
- }else return 0;
+ return true;
+ }
+ return false;
}
-int Request::match_send(void* a, void* b, simgrid::kernel::activity::CommImpl*)
+void Request::init_buffer(int count){
+// FIXME Handle the case of a partial shared malloc.
+ // This part handles the problem of non-contiguous memory (for the unserialization at the reception)
+ if (not smpi_process()->replaying() &&
+ ((((flags_ & MPI_REQ_RECV) != 0) && ((flags_ & MPI_REQ_ACCUMULATE) != 0)) || (type_->flags() & DT_FLAG_DERIVED))) {
+ // This part handles the problem of non-contiguous memory
+ old_buf_ = buf_;
+ if (count==0){
+ buf_ = nullptr;
+ }else {
+ buf_ = xbt_malloc(count*type_->size());
+ if ((type_->flags() & DT_FLAG_DERIVED) && ((flags_ & MPI_REQ_SEND) != 0)) {
+ type_->serialize(old_buf_, buf_, count);
+ }
+ }
+ }
+}
+
+bool Request::match_recv(void* a, void* b, simgrid::kernel::activity::CommImpl*)
{
- MPI_Request ref = static_cast<MPI_Request>(a);
- MPI_Request req = static_cast<MPI_Request>(b);
- XBT_DEBUG("Trying to match a send of src %d against %d, tag %d against %d, id %d against %d",ref->src_,req->src_, ref->tag_, req->tag_,ref->comm_->id(),req->comm_->id());
- xbt_assert(ref, "Cannot match send against null reference");
- xbt_assert(req, "Cannot match send against null request");
-
- if((ref->comm_->id()==MPI_UNDEFINED || req->comm_->id() == MPI_UNDEFINED || (ref->comm_->id()==req->comm_->id()))
- && ((req->src_ == MPI_ANY_SOURCE && (req->comm_->group()->rank(ref->src_) != MPI_UNDEFINED)) || req->src_ == ref->src_)
- && ((req->tag_ == MPI_ANY_TAG && ref->tag_ >=0)|| req->tag_ == ref->tag_)){
- if(req->src_ == MPI_ANY_SOURCE)
- req->real_src_ = ref->src_;
- if(req->tag_ == MPI_ANY_TAG)
- req->real_tag_ = ref->tag_;
- if(req->real_size_ < ref->real_size_)
- req->truncated_ = true;
- if (ref->detached_)
- req->detached_sender_=ref; //tie the sender to the receiver, as it is detached and has to be freed in the receiver
- if(req->cancelled_==0)
- req->cancelled_=-1;//mark as uncancellable
- XBT_DEBUG("match succeeded");
- return 1;
- } else
- return 0;
+ auto ref = static_cast<MPI_Request>(a);
+ auto req = static_cast<MPI_Request>(b);
+ return match_common(req, req, ref);
}
-void Request::print_request(const char *message)
+bool Request::match_send(void* a, void* b, simgrid::kernel::activity::CommImpl*)
{
- XBT_VERB("%s request %p [buf = %p, size = %zu, src = %d, dst = %d, tag = %d, flags = %x]",
- message, this, buf_, size_, src_, dst_, tag_, flags_);
+ auto ref = static_cast<MPI_Request>(a);
+ auto req = static_cast<MPI_Request>(b);
+ return match_common(req, ref, req);
}
+void Request::print_request(const char* message) const
+{
+ XBT_VERB("%s request %p [buf = %p, size = %zu, src = %ld, dst = %ld, tag = %d, flags = %x]", message, this, buf_,
+ size_, src_, dst_, tag_, flags_);
+}
/* factories, to hide the internal flags from the caller */
MPI_Request Request::bsend_init(const void *buf, int count, MPI_Datatype datatype, int dst, int tag, MPI_Comm comm)
{
-
return new Request(buf == MPI_BOTTOM ? nullptr : buf, count, datatype, simgrid::s4u::this_actor::get_pid(),
- comm->group()->actor(dst)->get_pid(), tag, comm,
+ dst != MPI_PROC_NULL ? comm->group()->actor(dst) : MPI_PROC_NULL, tag, comm,
MPI_REQ_PERSISTENT | MPI_REQ_SEND | MPI_REQ_PREPARED | MPI_REQ_BSEND);
}
MPI_Request Request::send_init(const void *buf, int count, MPI_Datatype datatype, int dst, int tag, MPI_Comm comm)
{
-
return new Request(buf == MPI_BOTTOM ? nullptr : buf, count, datatype, simgrid::s4u::this_actor::get_pid(),
- comm->group()->actor(dst)->get_pid(), tag, comm,
+ dst != MPI_PROC_NULL ? comm->group()->actor(dst) : MPI_PROC_NULL, tag, comm,
MPI_REQ_PERSISTENT | MPI_REQ_SEND | MPI_REQ_PREPARED);
}
MPI_Request Request::ssend_init(const void *buf, int count, MPI_Datatype datatype, int dst, int tag, MPI_Comm comm)
{
return new Request(buf == MPI_BOTTOM ? nullptr : buf, count, datatype, simgrid::s4u::this_actor::get_pid(),
- comm->group()->actor(dst)->get_pid(), tag, comm,
+ dst != MPI_PROC_NULL ? comm->group()->actor(dst) : MPI_PROC_NULL, tag, comm,
MPI_REQ_PERSISTENT | MPI_REQ_SSEND | MPI_REQ_SEND | MPI_REQ_PREPARED);
}
MPI_Request Request::isend_init(const void *buf, int count, MPI_Datatype datatype, int dst, int tag, MPI_Comm comm)
{
return new Request(buf == MPI_BOTTOM ? nullptr : buf, count, datatype, simgrid::s4u::this_actor::get_pid(),
- comm->group()->actor(dst)->get_pid(), tag, comm,
+ dst != MPI_PROC_NULL ? comm->group()->actor(dst) : MPI_PROC_NULL, tag, comm,
MPI_REQ_PERSISTENT | MPI_REQ_ISEND | MPI_REQ_SEND | MPI_REQ_PREPARED);
}
-
MPI_Request Request::rma_send_init(const void *buf, int count, MPI_Datatype datatype, int src, int dst, int tag, MPI_Comm comm,
MPI_Op op)
{
- MPI_Request request = nullptr; /* MC needs the comm to be set to nullptr during the call */
+ MPI_Request request;
if(op==MPI_OP_NULL){
- request = new Request(buf == MPI_BOTTOM ? nullptr : buf, count, datatype, comm->group()->actor(src)->get_pid(),
- comm->group()->actor(dst)->get_pid(), tag, comm,
+ request = new Request(buf == MPI_BOTTOM ? nullptr : buf, count, datatype, comm->group()->actor(src),
+ dst != MPI_PROC_NULL ? comm->group()->actor(dst) : MPI_PROC_NULL, tag, comm,
MPI_REQ_RMA | MPI_REQ_NON_PERSISTENT | MPI_REQ_ISEND | MPI_REQ_SEND | MPI_REQ_PREPARED);
}else{
- request = new Request(buf == MPI_BOTTOM ? nullptr : buf, count, datatype, comm->group()->actor(src)->get_pid(),
- comm->group()->actor(dst)->get_pid(), tag, comm,
+ request = new Request(buf == MPI_BOTTOM ? nullptr : buf, count, datatype, comm->group()->actor(src),
+ dst != MPI_PROC_NULL ? comm->group()->actor(dst) : MPI_PROC_NULL, tag, comm,
MPI_REQ_RMA | MPI_REQ_NON_PERSISTENT | MPI_REQ_ISEND | MPI_REQ_SEND | MPI_REQ_PREPARED |
- MPI_REQ_ACCUMULATE, op);
+ MPI_REQ_ACCUMULATE,
+ op);
}
return request;
}
MPI_Request Request::recv_init(void *buf, int count, MPI_Datatype datatype, int src, int tag, MPI_Comm comm)
{
+ aid_t source = MPI_PROC_NULL;
+ if (src == MPI_ANY_SOURCE)
+ source = MPI_ANY_SOURCE;
+ else if (src != MPI_PROC_NULL)
+ source = comm->group()->actor(src);
return new Request(buf == MPI_BOTTOM ? nullptr : buf, count, datatype,
- src == MPI_ANY_SOURCE ? MPI_ANY_SOURCE : comm->group()->actor(src)->get_pid(),
+ source,
simgrid::s4u::this_actor::get_pid(), tag, comm,
MPI_REQ_PERSISTENT | MPI_REQ_RECV | MPI_REQ_PREPARED);
}
MPI_Request Request::rma_recv_init(void *buf, int count, MPI_Datatype datatype, int src, int dst, int tag, MPI_Comm comm,
MPI_Op op)
{
- MPI_Request request = nullptr; /* MC needs the comm to be set to nullptr during the call */
+ aid_t source = MPI_PROC_NULL;
+ if (src == MPI_ANY_SOURCE)
+ source = MPI_ANY_SOURCE;
+ else if (src != MPI_PROC_NULL)
+ source = comm->group()->actor(src);
+ MPI_Request request;
if(op==MPI_OP_NULL){
- request = new Request(buf == MPI_BOTTOM ? nullptr : buf, count, datatype, comm->group()->actor(src)->get_pid(),
- comm->group()->actor(dst)->get_pid(), tag, comm,
+ request = new Request(buf == MPI_BOTTOM ? nullptr : buf, count, datatype, source,
+ dst != MPI_PROC_NULL ? comm->group()->actor(dst) : MPI_PROC_NULL, tag, comm,
MPI_REQ_RMA | MPI_REQ_NON_PERSISTENT | MPI_REQ_RECV | MPI_REQ_PREPARED);
}else{
- request = new Request(buf == MPI_BOTTOM ? nullptr : buf, count, datatype, comm->group()->actor(src)->get_pid(),
- comm->group()->actor(dst)->get_pid(), tag, comm,
- MPI_REQ_RMA | MPI_REQ_NON_PERSISTENT | MPI_REQ_RECV | MPI_REQ_PREPARED | MPI_REQ_ACCUMULATE, op);
+ request =
+ new Request(buf == MPI_BOTTOM ? nullptr : buf, count, datatype, source,
+ dst != MPI_PROC_NULL ? comm->group()->actor(dst) : MPI_PROC_NULL, tag, comm,
+ MPI_REQ_RMA | MPI_REQ_NON_PERSISTENT | MPI_REQ_RECV | MPI_REQ_PREPARED | MPI_REQ_ACCUMULATE, op);
}
return request;
}
MPI_Request Request::irecv_init(void *buf, int count, MPI_Datatype datatype, int src, int tag, MPI_Comm comm)
{
+ aid_t source = MPI_PROC_NULL;
+ if (src == MPI_ANY_SOURCE)
+ source = MPI_ANY_SOURCE;
+ else if (src != MPI_PROC_NULL)
+ source = comm->group()->actor(src);
return new Request(buf == MPI_BOTTOM ? nullptr : buf, count, datatype,
- src == MPI_ANY_SOURCE ? MPI_ANY_SOURCE : comm->group()->actor(src)->get_pid(),
- simgrid::s4u::this_actor::get_pid(), tag, comm,
+ source, simgrid::s4u::this_actor::get_pid(), tag, comm,
MPI_REQ_PERSISTENT | MPI_REQ_RECV | MPI_REQ_PREPARED);
}
MPI_Request Request::ibsend(const void *buf, int count, MPI_Datatype datatype, int dst, int tag, MPI_Comm comm)
{
- MPI_Request request = nullptr; /* MC needs the comm to be set to nullptr during the call */
- request = new Request(buf == MPI_BOTTOM ? nullptr : buf, count, datatype, simgrid::s4u::this_actor::get_pid(),
- comm->group()->actor(dst)->get_pid(), tag, comm,
- MPI_REQ_NON_PERSISTENT | MPI_REQ_ISEND | MPI_REQ_SEND | MPI_REQ_BSEND);
- request->start();
+ auto request = new Request(buf == MPI_BOTTOM ? nullptr : buf, count, datatype, simgrid::s4u::this_actor::get_pid(),
+ dst != MPI_PROC_NULL ? comm->group()->actor(dst) : MPI_PROC_NULL, tag, comm,
+ MPI_REQ_NON_PERSISTENT | MPI_REQ_ISEND | MPI_REQ_SEND | MPI_REQ_BSEND);
+ if(dst != MPI_PROC_NULL)
+ request->start();
return request;
}
MPI_Request Request::isend(const void *buf, int count, MPI_Datatype datatype, int dst, int tag, MPI_Comm comm)
{
- MPI_Request request = nullptr; /* MC needs the comm to be set to nullptr during the call */
- request = new Request(buf == MPI_BOTTOM ? nullptr : buf, count, datatype, simgrid::s4u::this_actor::get_pid(),
- comm->group()->actor(dst)->get_pid(), tag, comm,
- MPI_REQ_NON_PERSISTENT | MPI_REQ_ISEND | MPI_REQ_SEND);
- request->start();
+ auto request = new Request(buf == MPI_BOTTOM ? nullptr : buf, count, datatype, simgrid::s4u::this_actor::get_pid(),
+ dst != MPI_PROC_NULL ? comm->group()->actor(dst) : MPI_PROC_NULL, tag, comm,
+ MPI_REQ_NON_PERSISTENT | MPI_REQ_ISEND | MPI_REQ_SEND);
+ if(dst != MPI_PROC_NULL)
+ request->start();
return request;
}
MPI_Request Request::issend(const void *buf, int count, MPI_Datatype datatype, int dst, int tag, MPI_Comm comm)
{
- MPI_Request request = nullptr; /* MC needs the comm to be set to nullptr during the call */
- request = new Request(buf == MPI_BOTTOM ? nullptr : buf, count, datatype, simgrid::s4u::this_actor::get_pid(),
- comm->group()->actor(dst)->get_pid(), tag, comm,
- MPI_REQ_NON_PERSISTENT | MPI_REQ_ISEND | MPI_REQ_SSEND | MPI_REQ_SEND);
- request->start();
+ auto request = new Request(buf == MPI_BOTTOM ? nullptr : buf, count, datatype, simgrid::s4u::this_actor::get_pid(),
+ dst != MPI_PROC_NULL ? comm->group()->actor(dst) : MPI_PROC_NULL, tag, comm,
+ MPI_REQ_NON_PERSISTENT | MPI_REQ_ISEND | MPI_REQ_SSEND | MPI_REQ_SEND);
+ if(dst != MPI_PROC_NULL)
+ request->start();
return request;
}
-
MPI_Request Request::irecv(void *buf, int count, MPI_Datatype datatype, int src, int tag, MPI_Comm comm)
{
- MPI_Request request = nullptr; /* MC needs the comm to be set to nullptr during the call */
- request = new Request(buf == MPI_BOTTOM ? nullptr : buf, count, datatype,
- src == MPI_ANY_SOURCE ? MPI_ANY_SOURCE : comm->group()->actor(src)->get_pid(),
- simgrid::s4u::this_actor::get_pid(), tag, comm, MPI_REQ_NON_PERSISTENT | MPI_REQ_RECV);
- request->start();
+ aid_t source = MPI_PROC_NULL;
+ if (src == MPI_ANY_SOURCE)
+ source = MPI_ANY_SOURCE;
+ else if (src != MPI_PROC_NULL)
+ source = comm->group()->actor(src);
+ auto request = new Request(buf == MPI_BOTTOM ? nullptr : buf, count, datatype, source,
+ simgrid::s4u::this_actor::get_pid(), tag, comm, MPI_REQ_NON_PERSISTENT | MPI_REQ_RECV);
+ if(src != MPI_PROC_NULL)
+ request->start();
return request;
}
-void Request::recv(void *buf, int count, MPI_Datatype datatype, int src, int tag, MPI_Comm comm, MPI_Status * status)
+int Request::recv(void *buf, int count, MPI_Datatype datatype, int src, int tag, MPI_Comm comm, MPI_Status * status)
{
- MPI_Request request = nullptr; /* MC needs the comm to be set to nullptr during the call */
- request = irecv(buf, count, datatype, src, tag, comm);
- wait(&request,status);
+ MPI_Request request = irecv(buf, count, datatype, src, tag, comm);
+ int retval = wait(&request,status);
request = nullptr;
+ return retval;
}
void Request::bsend(const void *buf, int count, MPI_Datatype datatype, int dst, int tag, MPI_Comm comm)
{
- MPI_Request request = nullptr; /* MC needs the comm to be set to nullptr during the call */
- request = new Request(buf == MPI_BOTTOM ? nullptr : buf, count, datatype, simgrid::s4u::this_actor::get_pid(),
- comm->group()->actor(dst)->get_pid(), tag, comm, MPI_REQ_NON_PERSISTENT | MPI_REQ_SEND | MPI_REQ_BSEND);
+ auto request = new Request(buf == MPI_BOTTOM ? nullptr : buf, count, datatype, simgrid::s4u::this_actor::get_pid(),
+ dst != MPI_PROC_NULL ? comm->group()->actor(dst) : MPI_PROC_NULL, tag, comm,
+ MPI_REQ_NON_PERSISTENT | MPI_REQ_SEND | MPI_REQ_BSEND);
- request->start();
+ if(dst != MPI_PROC_NULL)
+ request->start();
wait(&request, MPI_STATUS_IGNORE);
request = nullptr;
}
void Request::send(const void *buf, int count, MPI_Datatype datatype, int dst, int tag, MPI_Comm comm)
{
- MPI_Request request = nullptr; /* MC needs the comm to be set to nullptr during the call */
- request = new Request(buf == MPI_BOTTOM ? nullptr : buf, count, datatype, simgrid::s4u::this_actor::get_pid(),
- comm->group()->actor(dst)->get_pid(), tag, comm, MPI_REQ_NON_PERSISTENT | MPI_REQ_SEND);
-
- request->start();
+ auto request = new Request(buf == MPI_BOTTOM ? nullptr : buf, count, datatype, simgrid::s4u::this_actor::get_pid(),
+ dst != MPI_PROC_NULL ? comm->group()->actor(dst) : MPI_PROC_NULL, tag, comm,
+ MPI_REQ_NON_PERSISTENT | MPI_REQ_SEND);
+ if(dst != MPI_PROC_NULL)
+ request->start();
wait(&request, MPI_STATUS_IGNORE);
request = nullptr;
}
void Request::ssend(const void *buf, int count, MPI_Datatype datatype, int dst, int tag, MPI_Comm comm)
{
- MPI_Request request = nullptr; /* MC needs the comm to be set to nullptr during the call */
- request = new Request(buf == MPI_BOTTOM ? nullptr : buf, count, datatype, simgrid::s4u::this_actor::get_pid(),
- comm->group()->actor(dst)->get_pid(), tag, comm,
- MPI_REQ_NON_PERSISTENT | MPI_REQ_SSEND | MPI_REQ_SEND);
+ auto request = new Request(buf == MPI_BOTTOM ? nullptr : buf, count, datatype, simgrid::s4u::this_actor::get_pid(),
+ dst != MPI_PROC_NULL ? comm->group()->actor(dst) : MPI_PROC_NULL, tag, comm,
+ MPI_REQ_NON_PERSISTENT | MPI_REQ_SSEND | MPI_REQ_SEND);
- request->start();
+ if(dst != MPI_PROC_NULL)
+ request->start();
wait(&request,MPI_STATUS_IGNORE);
request = nullptr;
}
void *recvbuf, int recvcount, MPI_Datatype recvtype, int src, int recvtag,
MPI_Comm comm, MPI_Status * status)
{
- MPI_Request requests[2];
- MPI_Status stats[2];
- int myid = simgrid::s4u::this_actor::get_pid();
- if ((comm->group()->actor(dst)->get_pid() == myid) && (comm->group()->actor(src)->get_pid() == myid)) {
+ aid_t source = MPI_PROC_NULL;
+ if (src == MPI_ANY_SOURCE)
+ source = MPI_ANY_SOURCE;
+ else if (src != MPI_PROC_NULL)
+ source = comm->group()->actor(src);
+ aid_t destination = dst != MPI_PROC_NULL ? comm->group()->actor(dst) : MPI_PROC_NULL;
+
+ std::array<MPI_Request, 2> requests;
+ std::array<MPI_Status, 2> stats;
+ aid_t myid = simgrid::s4u::this_actor::get_pid();
+ if ((destination == myid) && (source == myid)) {
Datatype::copy(sendbuf, sendcount, sendtype, recvbuf, recvcount, recvtype);
if (status != MPI_STATUS_IGNORE) {
- status->MPI_SOURCE = src;
+ status->MPI_SOURCE = source;
status->MPI_TAG = recvtag;
status->MPI_ERROR = MPI_SUCCESS;
status->count = sendcount * sendtype->size();
}
requests[0] = isend_init(sendbuf, sendcount, sendtype, dst, sendtag, comm);
requests[1] = irecv_init(recvbuf, recvcount, recvtype, src, recvtag, comm);
- startall(2, requests);
- waitall(2, requests, stats);
+ startall(2, requests.data());
+ waitall(2, requests.data(), stats.data());
unref(&requests[0]);
unref(&requests[1]);
if(status != MPI_STATUS_IGNORE) {
s4u::Mailbox* mailbox;
xbt_assert(action_ == nullptr, "Cannot (re-)start unfinished communication");
+ //reinitialize temporary buffer for persistent requests
+ if(real_size_ > 0 && flags_ & MPI_REQ_FINISHED){
+ buf_ = old_buf_;
+ init_buffer(real_size_/type_->size());
+ }
flags_ &= ~MPI_REQ_PREPARED;
flags_ &= ~MPI_REQ_FINISHED;
this->ref();
+ // we make a copy here, as the size is modified by simix, and we may reuse the request in another receive later
+ real_size_=size_;
if ((flags_ & MPI_REQ_RECV) != 0) {
this->print_request("New recv");
simgrid::smpi::ActorExt* process = smpi_process_remote(simgrid::s4u::Actor::by_pid(dst_));
- int async_small_thresh = simgrid::config::get_value<int>("smpi/async-small-thresh");
-
simgrid::s4u::MutexPtr mut = process->mailboxes_mutex();
- if (async_small_thresh != 0 || (flags_ & MPI_REQ_RMA) != 0)
+ if (smpi_cfg_async_small_thresh() != 0 || (flags_ & MPI_REQ_RMA) != 0)
mut->lock();
- if (async_small_thresh == 0 && (flags_ & MPI_REQ_RMA) == 0) {
+ if (smpi_cfg_async_small_thresh() == 0 && (flags_ & MPI_REQ_RMA) == 0) {
mailbox = process->mailbox();
- } else if (((flags_ & MPI_REQ_RMA) != 0) || static_cast<int>(size_) < async_small_thresh) {
+ } else if (((flags_ & MPI_REQ_RMA) != 0) || static_cast<int>(size_) < smpi_cfg_async_small_thresh()) {
//We have to check both mailboxes (because SSEND messages are sent to the large mbox).
//begin with the more appropriate one : the small one.
mailbox = process->mailbox_small();
XBT_DEBUG("Is there a corresponding send already posted in the small mailbox %s (in case of SSEND)?",
mailbox->get_cname());
- smx_activity_t action = mailbox->iprobe(0, &match_recv, static_cast<void*>(this));
+ simgrid::kernel::activity::ActivityImplPtr action = mailbox->iprobe(0, &match_recv, static_cast<void*>(this));
if (action == nullptr) {
mailbox = process->mailbox();
} else {
mailbox = process->mailbox_small();
XBT_DEBUG("Is there a corresponding send already posted the small mailbox?");
- smx_activity_t action = mailbox->iprobe(0, &match_recv, static_cast<void*>(this));
+ simgrid::kernel::activity::ActivityImplPtr action = mailbox->iprobe(0, &match_recv, static_cast<void*>(this));
if (action == nullptr) {
XBT_DEBUG("No, nothing in the permanent receive mailbox");
}
}
- // we make a copy here, as the size is modified by simix, and we may reuse the request in another receive later
- real_size_=size_;
action_ = simcall_comm_irecv(
process->get_actor()->get_impl(), mailbox->get_impl(), buf_, &real_size_, &match_recv,
process->replaying() ? &smpi_comm_null_copy_buffer_callback : smpi_comm_copy_data_callback, this, -1.0);
XBT_DEBUG("recv simcall posted");
- if (async_small_thresh != 0 || (flags_ & MPI_REQ_RMA) != 0)
+ if (smpi_cfg_async_small_thresh() != 0 || (flags_ & MPI_REQ_RMA) != 0)
mut->unlock();
} else { /* the RECV flag was not set, so this is a send */
- simgrid::smpi::ActorExt* process = smpi_process_remote(simgrid::s4u::Actor::by_pid(dst_));
- xbt_assert(process, "Actor pid=%d is gone??", dst_);
- int rank = src_;
- if (TRACE_smpi_view_internals()) {
- TRACE_smpi_send(rank, rank, dst_, tag_, size_);
- }
+ const simgrid::smpi::ActorExt* process = smpi_process_remote(simgrid::s4u::Actor::by_pid(dst_));
+ xbt_assert(process, "Actor pid=%ld is gone??", dst_);
+ if (TRACE_smpi_view_internals())
+ TRACE_smpi_send(src_, src_, dst_, tag_, size_);
this->print_request("New send");
void* buf = buf_;
if ((flags_ & MPI_REQ_SSEND) == 0 &&
((flags_ & MPI_REQ_RMA) != 0 || (flags_ & MPI_REQ_BSEND) != 0 ||
- static_cast<int>(size_) < simgrid::config::get_value<int>("smpi/send-is-detached-thresh"))) {
+ static_cast<int>(size_) < smpi_cfg_detached_send_thresh())) {
void *oldbuf = nullptr;
detached_ = true;
XBT_DEBUG("Send request %p is detached", this);
this->ref();
- if (not(old_type_->flags() & DT_FLAG_DERIVED)) {
+ if (not(type_->flags() & DT_FLAG_DERIVED)) {
oldbuf = buf_;
if (not process->replaying() && oldbuf != nullptr && size_ != 0) {
- if ((smpi_privatize_global_variables != SmpiPrivStrategies::NONE) &&
- (static_cast<char*>(buf_) >= smpi_data_exe_start) &&
- (static_cast<char*>(buf_) < smpi_data_exe_start + smpi_data_exe_size)) {
+ if (smpi_switch_data_segment(simgrid::s4u::Actor::by_pid(src_), buf_))
XBT_DEBUG("Privatization : We are sending from a zone inside global memory. Switch data segment ");
- smpi_switch_data_segment(simgrid::s4u::Actor::by_pid(src_));
- }
+
//we need this temporary buffer even for bsend, as it will be released in the copy callback and we don't have a way to differentiate it
//so actually ... don't use manually attached buffer space.
buf = xbt_malloc(size_);
XBT_DEBUG("sending size of %zu : sleep %f ", size_, sleeptime);
}
- int async_small_thresh = simgrid::config::get_value<int>("smpi/async-small-thresh");
-
simgrid::s4u::MutexPtr mut = process->mailboxes_mutex();
- if (async_small_thresh != 0 || (flags_ & MPI_REQ_RMA) != 0)
+ if (smpi_cfg_async_small_thresh() != 0 || (flags_ & MPI_REQ_RMA) != 0)
mut->lock();
- if (not(async_small_thresh != 0 || (flags_ & MPI_REQ_RMA) != 0)) {
+ if (not(smpi_cfg_async_small_thresh() != 0 || (flags_ & MPI_REQ_RMA) != 0)) {
mailbox = process->mailbox();
- } else if (((flags_ & MPI_REQ_RMA) != 0) || static_cast<int>(size_) < async_small_thresh) { // eager mode
+ } else if (((flags_ & MPI_REQ_RMA) != 0) || static_cast<int>(size_) < smpi_cfg_async_small_thresh()) { // eager mode
mailbox = process->mailbox();
XBT_DEBUG("Is there a corresponding recv already posted in the large mailbox %s?", mailbox->get_cname());
- smx_activity_t action = mailbox->iprobe(1, &match_send, static_cast<void*>(this));
+ simgrid::kernel::activity::ActivityImplPtr action = mailbox->iprobe(1, &match_send, static_cast<void*>(this));
if (action == nullptr) {
if ((flags_ & MPI_REQ_SSEND) == 0) {
mailbox = process->mailbox_small();
XBT_DEBUG("Send request %p is in the large mailbox %s (buf: %p)", this, mailbox->get_cname(), buf_);
}
- // we make a copy here, as the size is modified by simix, and we may reuse the request in another receive later
- real_size_=size_;
- action_ = simcall_comm_isend(
- simgrid::s4u::Actor::by_pid(src_)->get_impl(), mailbox->get_impl(), size_, -1.0, buf, real_size_, &match_send,
+ size_t payload_size_ = size_ + 16;//MPI enveloppe size (tag+dest+communicator)
+ action_ = simcall_comm_isend(
+ simgrid::kernel::actor::ActorImpl::by_pid(src_), mailbox->get_impl(), payload_size_, -1.0, buf, real_size_,
+ &match_send,
&xbt_free_f, // how to free the userdata if a detached send fails
process->replaying() ? &smpi_comm_null_copy_buffer_callback : smpi_comm_copy_data_callback, this,
// detach if msg size < eager/rdv switch limit
smpi_process()->get_tracing_category());
}
- if (async_small_thresh != 0 || ((flags_ & MPI_REQ_RMA) != 0))
+ if (smpi_cfg_async_small_thresh() != 0 || ((flags_ & MPI_REQ_RMA) != 0))
mut->unlock();
}
}
return;
for(int i = 0; i < count; i++) {
- requests[i]->start();
+ if(requests[i]->src_ != MPI_PROC_NULL && requests[i]->dst_ != MPI_PROC_NULL)
+ requests[i]->start();
}
}
void Request::cancel()
{
- if(cancelled_!=-1)
- cancelled_=1;
+ this->flags_ |= MPI_REQ_CANCELLED;
if (this->action_ != nullptr)
(boost::static_pointer_cast<simgrid::kernel::activity::CommImpl>(this->action_))->cancel();
}
int Request::test(MPI_Request * request, MPI_Status * status, int* flag) {
- //assume that request is not MPI_REQUEST_NULL (filtered in PMPI_Test or testall before)
+ // assume that *request is not MPI_REQUEST_NULL (filtered in PMPI_Test or testall before)
// to avoid deadlocks if used as a break condition, such as
// while (MPI_Test(request, flag, status) && flag) dostuff...
// because the time will not normally advance when only calls to MPI_Test are made -> deadlock
// multiplier to the sleeptime, to increase speed of execution, each failed test will increase it
+ xbt_assert(*request != MPI_REQUEST_NULL);
+
static int nsleeps = 1;
int ret = MPI_SUCCESS;
-
- // Are we testing a request meant for non blocking collectives ?
- // If so, test all the subrequests.
- if ((*request)->nbc_requests_size_>0){
- ret = testall((*request)->nbc_requests_size_, (*request)->nbc_requests_, flag, MPI_STATUSES_IGNORE);
- if(*flag){
- delete[] (*request)->nbc_requests_;
- (*request)->nbc_requests_size_=0;
- unref(request);
- }
- return ret;
- }
-
+
if(smpi_test_sleep > 0)
simgrid::s4u::this_actor::sleep_for(nsleeps * smpi_test_sleep);
Status::empty(status);
*flag = 1;
- if (((*request)->flags_ & MPI_REQ_PREPARED) == 0) {
- if ((*request)->action_ != nullptr && (*request)->cancelled_ != 1){
+
+ if ((*request)->flags_ & MPI_REQ_NBC){
+ *flag = finish_nbc_requests(request, 1);
+ }
+
+ if (((*request)->flags_ & (MPI_REQ_PREPARED | MPI_REQ_FINISHED)) == 0) {
+ if ((*request)->action_ != nullptr && ((*request)->flags_ & MPI_REQ_CANCELLED) == 0){
try{
- *flag = simcall_comm_test((*request)->action_);
+ *flag = simcall_comm_test((*request)->action_.get());
} catch (const Exception&) {
*flag = 0;
return ret;
}
}
- if (*request != MPI_REQUEST_NULL &&
- ((*request)->flags_ & MPI_REQ_GENERALIZED)
- && !((*request)->flags_ & MPI_REQ_COMPLETE))
+ if (((*request)->flags_ & MPI_REQ_GENERALIZED) && not((*request)->flags_ & MPI_REQ_COMPLETE))
*flag=0;
if (*flag) {
- finish_wait(request,status);
+ finish_wait(request, status); // may invalidate *request
if (*request != MPI_REQUEST_NULL && ((*request)->flags_ & MPI_REQ_GENERALIZED)){
+ MPI_Status tmp_status;
MPI_Status* mystatus;
- if(status==MPI_STATUS_IGNORE){
- mystatus=new MPI_Status();
+ if (status == MPI_STATUS_IGNORE) {
+ mystatus = &tmp_status;
Status::empty(mystatus);
- }else{
- mystatus=status;
+ } else {
+ mystatus = status;
}
ret = ((*request)->generalized_funcs)->query_fn(((*request)->generalized_funcs)->extra_state, mystatus);
- if(status==MPI_STATUS_IGNORE)
- delete mystatus;
}
nsleeps=1;//reset the number of sleeps we will do next time
if (*request != MPI_REQUEST_NULL && ((*request)->flags_ & MPI_REQ_PERSISTENT) == 0)
*request = MPI_REQUEST_NULL;
- } else if (simgrid::config::get_value<bool>("smpi/grow-injected-times")) {
+ } else if (smpi_cfg_grow_injected_times()) {
nsleeps++;
}
}
int Request::testsome(int incount, MPI_Request requests[], int *count, int *indices, MPI_Status status[])
{
- int ret = MPI_SUCCESS;
int error=0;
int count_dead = 0;
int flag = 0;
*count = 0;
for (int i = 0; i < incount; i++) {
if (requests[i] != MPI_REQUEST_NULL && not (requests[i]->flags_ & MPI_REQ_FINISHED)) {
- ret = test(&requests[i], pstat, &flag);
+ int ret = test(&requests[i], pstat, &flag);
if(ret!=MPI_SUCCESS)
error = 1;
if(flag) {
std::vector<simgrid::kernel::activity::CommImpl*> comms;
comms.reserve(count);
- int i;
*flag = 0;
int ret = MPI_SUCCESS;
*index = MPI_UNDEFINED;
std::vector<int> map; /** Maps all matching comms back to their location in requests **/
- for(i = 0; i < count; i++) {
+ for (int i = 0; i < count; i++) {
if ((requests[i] != MPI_REQUEST_NULL) && requests[i]->action_ && not(requests[i]->flags_ & MPI_REQ_PREPARED)) {
comms.push_back(static_cast<simgrid::kernel::activity::CommImpl*>(requests[i]->action_.get()));
map.push_back(i);
static int nsleeps = 1;
if(smpi_test_sleep > 0)
simgrid::s4u::this_actor::sleep_for(nsleeps * smpi_test_sleep);
+ ssize_t i;
try{
i = simcall_comm_testany(comms.data(), comms.size()); // The i-th element in comms matches!
} catch (const Exception&) {
XBT_DEBUG("Exception in testany");
return 0;
}
-
+
if (i != -1) { // -1 is not MPI_UNDEFINED but a SIMIX return code. (nothing matches)
*index = map[i];
- if (requests[*index] != MPI_REQUEST_NULL &&
- (requests[*index]->flags_ & MPI_REQ_GENERALIZED)
- && !(requests[*index]->flags_ & MPI_REQ_COMPLETE)) {
+ if (requests[*index] != MPI_REQUEST_NULL && (requests[*index]->flags_ & MPI_REQ_GENERALIZED) &&
+ not(requests[*index]->flags_ & MPI_REQ_COMPLETE)) {
*flag=0;
} else {
finish_wait(&requests[*index],status);
if (requests[*index] != MPI_REQUEST_NULL && (requests[*index]->flags_ & MPI_REQ_GENERALIZED)){
+ MPI_Status tmp_status;
MPI_Status* mystatus;
- if(status==MPI_STATUS_IGNORE){
- mystatus=new MPI_Status();
+ if (status == MPI_STATUS_IGNORE) {
+ mystatus = &tmp_status;
Status::empty(mystatus);
- }else{
- mystatus=status;
+ } else {
+ mystatus = status;
}
ret=(requests[*index]->generalized_funcs)->query_fn((requests[*index]->generalized_funcs)->extra_state, mystatus);
- if(status==MPI_STATUS_IGNORE)
- delete mystatus;
}
- if (requests[*index] != MPI_REQUEST_NULL && (requests[*index]->flags_ & MPI_REQ_NON_PERSISTENT))
+ if (requests[*index] != MPI_REQUEST_NULL && requests[*index]->flags_ & MPI_REQ_NBC){
+ *flag = finish_nbc_requests(&requests[*index] , 1);
+ }
+
+ if (requests[*index] != MPI_REQUEST_NULL && (requests[*index]->flags_ & MPI_REQ_NON_PERSISTENT))
requests[*index] = MPI_REQUEST_NULL;
XBT_DEBUG("Testany - returning with index %d", *index);
*flag=1;
MPI_Status *pstat = status == MPI_STATUSES_IGNORE ? MPI_STATUS_IGNORE : &stat;
int flag;
int error = 0;
- int ret=MPI_SUCCESS;
*outflag = 1;
for(int i=0; i<count; i++){
if (requests[i] != MPI_REQUEST_NULL && not(requests[i]->flags_ & MPI_REQ_PREPARED)) {
- ret = test(&requests[i], pstat, &flag);
+ int ret = test(&requests[i], pstat, &flag);
if (flag){
flag=0;
- requests[i]=MPI_REQUEST_NULL;
}else{
*outflag=0;
}
- if (ret != MPI_SUCCESS)
+ if (ret != MPI_SUCCESS)
error = 1;
}else{
Status::empty(pstat);
status[i] = *pstat;
}
}
- if(error==1)
+ if (error == 1)
return MPI_ERR_IN_STATUS;
- else
+ else
return MPI_SUCCESS;
}
// This can speed up the execution of certain applications by an order of magnitude, such as HPL
static int nsleeps = 1;
double speed = s4u::this_actor::get_host()->get_speed();
- double maxrate = simgrid::config::get_value<double>("smpi/iprobe-cpu-usage");
- MPI_Request request = new Request(nullptr, 0, MPI_CHAR,
- source == MPI_ANY_SOURCE ? MPI_ANY_SOURCE : comm->group()->actor(source)->get_pid(),
- simgrid::s4u::this_actor::get_pid(), tag, comm, MPI_REQ_PERSISTENT | MPI_REQ_RECV);
+ double maxrate = smpi_cfg_iprobe_cpu_usage();
+ auto request =
+ new Request(nullptr, 0, MPI_CHAR, source == MPI_ANY_SOURCE ? MPI_ANY_SOURCE : comm->group()->actor(source),
+ simgrid::s4u::this_actor::get_pid(), tag, comm, MPI_REQ_PERSISTENT | MPI_REQ_RECV | MPI_REQ_PROBE);
if (smpi_iprobe_sleep > 0) {
/** Compute the number of flops we will sleep **/
s4u::this_actor::exec_init(/*nsleeps: See comment above */ nsleeps *
/*(seconds * flop/s -> total flops)*/ smpi_iprobe_sleep * speed * maxrate)
->set_name("iprobe")
/* Not the entire CPU can be used when iprobing: This is important for
- * the energy consumption caused by polling with iprobes.
+ * the energy consumption caused by polling with iprobes.
* Note also that the number of flops that was
* computed above contains a maxrate factor and is hence reduced (maxrate < 1)
*/
- ->set_bound(maxrate*speed)
+ ->set_bound(maxrate * speed)
->start()
->wait();
}
request->print_request("New iprobe");
// We have to test both mailboxes as we don't know if we will receive one or another
- if (simgrid::config::get_value<int>("smpi/async-small-thresh") > 0) {
+ if (smpi_cfg_async_small_thresh() > 0) {
mailbox = smpi_process()->mailbox_small();
XBT_DEBUG("Trying to probe the perm recv mailbox");
request->action_ = mailbox->iprobe(0, &match_recv, static_cast<void*>(request));
if (request->action_ != nullptr){
kernel::activity::CommImplPtr sync_comm = boost::static_pointer_cast<kernel::activity::CommImpl>(request->action_);
- MPI_Request req = static_cast<MPI_Request>(sync_comm->src_data_);
+ const Request* req = static_cast<MPI_Request>(sync_comm->src_data_);
*flag = 1;
if (status != MPI_STATUS_IGNORE && (req->flags_ & MPI_REQ_PREPARED) == 0) {
status->MPI_SOURCE = comm->group()->rank(req->src_);
}
else {
*flag = 0;
- if (simgrid::config::get_value<bool>("smpi/grow-injected-times"))
+ if (smpi_cfg_grow_injected_times())
nsleeps++;
}
unref(&request);
xbt_assert(request == MPI_REQUEST_NULL);
}
+int Request::finish_nbc_requests(MPI_Request* request, int test){
+ int flag = 1;
+ int ret = 0;
+ if(test == 0)
+ ret = waitall((*request)->nbc_requests_.size(), (*request)->nbc_requests_.data(), MPI_STATUSES_IGNORE);
+ else{
+ ret = testall((*request)->nbc_requests_.size(), (*request)->nbc_requests_.data(), &flag, MPI_STATUSES_IGNORE);
+ }
+ if(ret!=MPI_SUCCESS)
+ xbt_die("Failure when waiting on non blocking collective sub-requests");
+ if(flag == 1){
+ XBT_DEBUG("Finishing non blocking collective request with %zu sub-requests", (*request)->nbc_requests_.size());
+ for(auto& req: (*request)->nbc_requests_){
+ if((*request)->buf_!=nullptr && req!=MPI_REQUEST_NULL){//reduce case
+ void * buf=req->buf_;
+ if((*request)->type_->flags() & DT_FLAG_DERIVED)
+ buf=req->old_buf_;
+ if(req->flags_ & MPI_REQ_RECV ){
+ if((*request)->op_!=MPI_OP_NULL){
+ int count=(*request)->size_/ (*request)->type_->size();
+ (*request)->op_->apply(buf, (*request)->buf_, &count, (*request)->type_);
+ }
+ smpi_free_tmp_buffer(static_cast<unsigned char*>(buf));
+ }
+ }
+ if(req!=MPI_REQUEST_NULL)
+ Request::unref(&req);
+ }
+ (*request)->nbc_requests_.clear();
+ }
+ return flag;
+}
+
void Request::finish_wait(MPI_Request* request, MPI_Status * status)
{
MPI_Request req = *request;
Status::empty(status);
-
- if (req->cancelled_==1){
+ if((req->flags_ & MPI_REQ_CANCELLED) != 0 && (req->flags_ & MPI_REQ_MATCHED) == 0) {
if (status!=MPI_STATUS_IGNORE)
status->cancelled=1;
if(req->detached_sender_ != nullptr)
}
if ((req->flags_ & (MPI_REQ_PREPARED | MPI_REQ_GENERALIZED | MPI_REQ_FINISHED)) == 0) {
- if(status != MPI_STATUS_IGNORE) {
- int src = req->src_ == MPI_ANY_SOURCE ? req->real_src_ : req->src_;
- status->MPI_SOURCE = req->comm_->group()->rank(src);
- status->MPI_TAG = req->tag_ == MPI_ANY_TAG ? req->real_tag_ : req->tag_;
- status->MPI_ERROR = req->truncated_ ? MPI_ERR_TRUNCATE : MPI_SUCCESS;
+ if (status != MPI_STATUS_IGNORE) {
+ if (req->src_== MPI_PROC_NULL || req->dst_== MPI_PROC_NULL){
+ Status::empty(status);
+ status->MPI_SOURCE = MPI_PROC_NULL;
+ } else {
+ aid_t src = req->src_ == MPI_ANY_SOURCE ? req->real_src_ : req->src_;
+ status->MPI_SOURCE = req->comm_->group()->rank(src);
+ status->MPI_TAG = req->tag_ == MPI_ANY_TAG ? req->real_tag_ : req->tag_;
+ status->MPI_ERROR = req->truncated_ ? MPI_ERR_TRUNCATE : MPI_SUCCESS;
+ }
// this handles the case were size in receive differs from size in send
status->count = req->real_size_;
}
//detached send will be finished at the other end
if (not(req->detached_ && ((req->flags_ & MPI_REQ_SEND) != 0))) {
req->print_request("Finishing");
- MPI_Datatype datatype = req->old_type_;
+ MPI_Datatype datatype = req->type_;
// FIXME Handle the case of a partial shared malloc.
- if (((req->flags_ & MPI_REQ_ACCUMULATE) != 0) ||
- (datatype->flags() & DT_FLAG_DERIVED)) { // && (not smpi_is_shared(req->old_buf_))){
-
- if (not smpi_process()->replaying() && smpi_privatize_global_variables != SmpiPrivStrategies::NONE &&
- static_cast<char*>(req->old_buf_) >= smpi_data_exe_start &&
- static_cast<char*>(req->old_buf_) < smpi_data_exe_start + smpi_data_exe_size) {
+ if (not smpi_process()->replaying() &&
+ (((req->flags_ & MPI_REQ_ACCUMULATE) != 0) || (datatype->flags() & DT_FLAG_DERIVED))) {
+ if (smpi_switch_data_segment(simgrid::s4u::Actor::self(), req->old_buf_))
XBT_VERB("Privatization : We are unserializing to a zone in global memory Switch data segment ");
- smpi_switch_data_segment(simgrid::s4u::Actor::self());
- }
if(datatype->flags() & DT_FLAG_DERIVED){
- // This part handles the problem of non-contignous memory the unserialization at the reception
+ // This part handles the problem of non-contiguous memory the unserialization at the reception
if ((req->flags_ & MPI_REQ_RECV) && datatype->size() != 0)
datatype->unserialize(req->buf_, req->old_buf_, req->real_size_/datatype->size() , req->op_);
xbt_free(req->buf_);
+ req->buf_=nullptr;
} else if (req->flags_ & MPI_REQ_RECV) { // apply op on contiguous buffer for accumulate
if (datatype->size() != 0) {
int n = req->real_size_ / datatype->size();
req->op_->apply(req->buf_, req->old_buf_, &n, datatype);
}
xbt_free(req->buf_);
+ req->buf_=nullptr;
}
}
}
}
if (TRACE_smpi_view_internals() && ((req->flags_ & MPI_REQ_RECV) != 0)) {
- int rank = simgrid::s4u::this_actor::get_pid();
- int src_traced = (req->src_ == MPI_ANY_SOURCE ? req->real_src_ : req->src_);
+ aid_t rank = simgrid::s4u::this_actor::get_pid();
+ aid_t src_traced = (req->src_ == MPI_ANY_SOURCE ? req->real_src_ : req->src_);
TRACE_smpi_recv(src_traced, rank,req->tag_);
}
if(req->detached_sender_ != nullptr){
if (req->flags_ & MPI_REQ_PERSISTENT)
req->action_ = nullptr;
req->flags_ |= MPI_REQ_FINISHED;
- unref(request);
+
+ if (req->truncated_ || req->unmatched_types_) {
+ char error_string[MPI_MAX_ERROR_STRING];
+ int error_size;
+ int errkind;
+ if(req->truncated_ )
+ errkind = MPI_ERR_TRUNCATE;
+ else
+ errkind = MPI_ERR_TYPE;
+ PMPI_Error_string(errkind, error_string, &error_size);
+ MPI_Errhandler err = (req->comm_) ? (req->comm_)->errhandler() : MPI_ERRHANDLER_NULL;
+ if (err == MPI_ERRHANDLER_NULL || err == MPI_ERRORS_RETURN)
+ XBT_WARN("recv - returned %.*s instead of MPI_SUCCESS", error_size, error_string);
+ else if (err == MPI_ERRORS_ARE_FATAL)
+ xbt_die("recv - returned %.*s instead of MPI_SUCCESS", error_size, error_string);
+ else
+ err->call((req->comm_), errkind);
+ if (err != MPI_ERRHANDLER_NULL)
+ simgrid::smpi::Errhandler::unref(err);
+ MC_assert(not MC_is_active()); /* Only fail in MC mode */
+ }
+ if(req->src_ != MPI_PROC_NULL && req->dst_ != MPI_PROC_NULL)
+ unref(request);
}
int Request::wait(MPI_Request * request, MPI_Status * status)
{
+ // assume that *request is not MPI_REQUEST_NULL (filtered in PMPI_Wait before)
+ xbt_assert(*request != MPI_REQUEST_NULL);
+
int ret=MPI_SUCCESS;
- // Are we waiting on a request meant for non blocking collectives ?
- // If so, wait for all the subrequests.
- if ((*request)->nbc_requests_size_>0){
- ret = waitall((*request)->nbc_requests_size_, (*request)->nbc_requests_, MPI_STATUSES_IGNORE);
- for (int i = 0; i < (*request)->nbc_requests_size_; i++) {
- if((*request)->buf_!=nullptr && (*request)->nbc_requests_[i]!=MPI_REQUEST_NULL){//reduce case
- void * buf=(*request)->nbc_requests_[i]->buf_;
- if((*request)->old_type_->flags() & DT_FLAG_DERIVED)
- buf=(*request)->nbc_requests_[i]->old_buf_;
- if((*request)->nbc_requests_[i]->flags_ & MPI_REQ_RECV ){
- if((*request)->op_!=MPI_OP_NULL){
- int count=(*request)->size_/ (*request)->old_type_->size();
- (*request)->op_->apply(buf, (*request)->buf_, &count, (*request)->old_type_);
- }
- smpi_free_tmp_buffer(static_cast<unsigned char*>(buf));
- }
- }
- if((*request)->nbc_requests_[i]!=MPI_REQUEST_NULL)
- Request::unref(&((*request)->nbc_requests_[i]));
+
+ if((*request)->src_ == MPI_PROC_NULL || (*request)->dst_ == MPI_PROC_NULL){
+ if (status != MPI_STATUS_IGNORE) {
+ Status::empty(status);
+ status->MPI_SOURCE = MPI_PROC_NULL;
}
- delete[] (*request)->nbc_requests_;
- (*request)->nbc_requests_size_=0;
- unref(request);
(*request)=MPI_REQUEST_NULL;
return ret;
}
(*request)->print_request("Waiting");
- if ((*request)->flags_ & MPI_REQ_PREPARED) {
+ if ((*request)->flags_ & (MPI_REQ_PREPARED | MPI_REQ_FINISHED)) {
Status::empty(status);
return ret;
}
if ((*request)->action_ != nullptr){
try{
// this is not a detached send
- simcall_comm_wait((*request)->action_, -1.0);
- } catch (const Exception&) {
+ simcall_comm_wait((*request)->action_.get(), -1.0);
+ } catch (const CancelException&) {
XBT_VERB("Request cancelled");
}
}
- if (*request != MPI_REQUEST_NULL && ((*request)->flags_ & MPI_REQ_GENERALIZED)){
- MPI_Status* mystatus;
- if(!((*request)->flags_ & MPI_REQ_COMPLETE)){
+ if ((*request)->flags_ & MPI_REQ_GENERALIZED) {
+ if (not((*request)->flags_ & MPI_REQ_COMPLETE)) {
((*request)->generalized_funcs)->mutex->lock();
((*request)->generalized_funcs)->cond->wait(((*request)->generalized_funcs)->mutex);
((*request)->generalized_funcs)->mutex->unlock();
- }
- if(status==MPI_STATUS_IGNORE){
- mystatus=new MPI_Status();
+ }
+ MPI_Status tmp_status;
+ MPI_Status* mystatus;
+ if (status == MPI_STATUS_IGNORE) {
+ mystatus = &tmp_status;
Status::empty(mystatus);
- }else{
- mystatus=status;
+ } else {
+ mystatus = status;
}
ret = ((*request)->generalized_funcs)->query_fn(((*request)->generalized_funcs)->extra_state, mystatus);
- if(status==MPI_STATUS_IGNORE)
- delete mystatus;
}
- finish_wait(request,status);
+ if ((*request)->truncated_)
+ ret = MPI_ERR_TRUNCATE;
+
+ if ((*request)->flags_ & MPI_REQ_NBC)
+ finish_nbc_requests(request, 0);
+
+ finish_wait(request, status); // may invalidate *request
if (*request != MPI_REQUEST_NULL && (((*request)->flags_ & MPI_REQ_NON_PERSISTENT) != 0))
*request = MPI_REQUEST_NULL;
return ret;
int Request::waitany(int count, MPI_Request requests[], MPI_Status * status)
{
- std::vector<simgrid::kernel::activity::CommImpl*> comms;
- comms.reserve(count);
int index = MPI_UNDEFINED;
if(count > 0) {
// Wait for a request to complete
+ std::vector<simgrid::kernel::activity::CommImpl*> comms;
std::vector<int> map;
XBT_DEBUG("Wait for one of %d", count);
for(int i = 0; i < count; i++) {
map.push_back(i);
} else {
// This is a finished detached request, let's return this one
- comms.clear(); // so we free don't do the waitany call
+ comms.clear(); // don't do the waitany call afterwards
index = i;
+ if (requests[index]->flags_ & MPI_REQ_NBC)
+ finish_nbc_requests(&requests[index], 0);
finish_wait(&requests[i], status); // cleanup if refcount = 0
if (requests[i] != MPI_REQUEST_NULL && (requests[i]->flags_ & MPI_REQ_NON_PERSISTENT))
requests[i] = MPI_REQUEST_NULL; // set to null
}
if (not comms.empty()) {
XBT_DEBUG("Enter waitany for %zu comms", comms.size());
- int i=MPI_UNDEFINED;
+ ssize_t i;
try{
- // this is not a detached send
i = simcall_comm_waitany(comms.data(), comms.size(), -1);
- } catch (const Exception&) {
- XBT_INFO("request %d cancelled ", i);
- return i;
+ } catch (const CancelException&) {
+ XBT_INFO("request cancelled");
+ i = -1;
}
// not MPI_UNDEFINED, as this is a simix return code
}
}
+
if (index==MPI_UNDEFINED)
Status::empty(status);
return index;
}
-static int sort_accumulates(MPI_Request a, MPI_Request b)
+static int sort_accumulates(const Request* a, const Request* b)
{
return (a->tag() > b->tag());
}
wait(&requests[c],pstat);
index = c;
} else {
- index = waitany(count, (MPI_Request*)requests, pstat);
-
+ index = waitany(count, requests, pstat);
+
if (index == MPI_UNDEFINED)
break;
}
}
- if (not accumulates.empty()) {
- std::sort(accumulates.begin(), accumulates.end(), sort_accumulates);
- for (auto& req : accumulates) {
- finish_wait(&req, status);
- }
- }
+ std::sort(accumulates.begin(), accumulates.end(), sort_accumulates);
+ for (auto& req : accumulates)
+ finish_wait(&req, status);
return retvalue;
}
int index = 0;
MPI_Status stat;
MPI_Status *pstat = status == MPI_STATUSES_IGNORE ? MPI_STATUS_IGNORE : &stat;
- index = waitany(incount, (MPI_Request*)requests, pstat);
+ index = waitany(incount, requests, pstat);
if(index==MPI_UNDEFINED) return MPI_UNDEFINED;
if(status != MPI_STATUSES_IGNORE) {
status[count] = *pstat;
indices[count] = index;
count++;
for (int i = 0; i < incount; i++) {
- if (i!=index && requests[i] != MPI_REQUEST_NULL
- && not(requests[i]->flags_ & MPI_REQ_FINISHED)) {
+ if (i != index && requests[i] != MPI_REQUEST_NULL && not(requests[i]->flags_ & MPI_REQ_FINISHED)) {
test(&requests[i], pstat,&flag);
if (flag==1){
indices[count] = i;
return count;
}
-MPI_Request Request::f2c(int id) {
- char key[KEY_SIZE];
+MPI_Request Request::f2c(int id)
+{
if(id==MPI_FORTRAN_REQUEST_NULL)
- return static_cast<MPI_Request>(MPI_REQUEST_NULL);
- return static_cast<MPI_Request>(F2C::f2c_lookup()->at(get_key(key,id)));
+ return MPI_REQUEST_NULL;
+ return static_cast<MPI_Request>(F2C::lookup()->at(id));
}
void Request::free_f(int id)
{
if (id != MPI_FORTRAN_REQUEST_NULL) {
- char key[KEY_SIZE];
- F2C::f2c_lookup()->erase(get_key(key, id));
+ F2C::lookup()->erase(id);
}
}
-int Request::get_status(MPI_Request req, int* flag, MPI_Status * status){
+int Request::get_status(const Request* req, int* flag, MPI_Status* status)
+{
*flag=0;
if(req != MPI_REQUEST_NULL && req->action_ != nullptr) {
- req->iprobe(req->src_, req->tag_, req->comm_, flag, status);
+ req->iprobe(req->comm_->group()->rank(req->src_), req->tag_, req->comm_, flag, status);
if(*flag)
return MPI_SUCCESS;
}
- if (req != MPI_REQUEST_NULL &&
- (req->flags_ & MPI_REQ_GENERALIZED)
- && !(req->flags_ & MPI_REQ_COMPLETE)) {
- *flag=0;
+ if (req != MPI_REQUEST_NULL && (req->flags_ & MPI_REQ_GENERALIZED) && not(req->flags_ & MPI_REQ_COMPLETE)) {
+ *flag = 0;
return MPI_SUCCESS;
}
*flag=1;
if(req != MPI_REQUEST_NULL &&
status != MPI_STATUS_IGNORE) {
- int src = req->src_ == MPI_ANY_SOURCE ? req->real_src_ : req->src_;
+ aid_t src = req->src_ == MPI_ANY_SOURCE ? req->real_src_ : req->src_;
status->MPI_SOURCE = req->comm_->group()->rank(src);
status->MPI_TAG = req->tag_ == MPI_ANY_TAG ? req->real_tag_ : req->tag_;
status->MPI_ERROR = req->truncated_ ? MPI_ERR_TRUNCATE : MPI_SUCCESS;
return MPI_SUCCESS;
}
-int Request::grequest_start( MPI_Grequest_query_function *query_fn, MPI_Grequest_free_function *free_fn, MPI_Grequest_cancel_function *cancel_fn, void *extra_state, MPI_Request *request){
-
+int Request::grequest_start(MPI_Grequest_query_function* query_fn, MPI_Grequest_free_function* free_fn,
+ MPI_Grequest_cancel_function* cancel_fn, void* extra_state, MPI_Request* request)
+{
*request = new Request();
(*request)->flags_ |= MPI_REQ_GENERALIZED;
(*request)->flags_ |= MPI_REQ_PERSISTENT;
(*request)->refcount_ = 1;
- ((*request)->generalized_funcs) = new s_smpi_mpi_generalized_request_funcs_t;
+ ((*request)->generalized_funcs) = std::make_unique<smpi_mpi_generalized_request_funcs_t>();
((*request)->generalized_funcs)->query_fn=query_fn;
((*request)->generalized_funcs)->free_fn=free_fn;
((*request)->generalized_funcs)->cancel_fn=cancel_fn;
return MPI_SUCCESS;
}
-int Request::grequest_complete( MPI_Request request){
- if ((!(request->flags_ & MPI_REQ_GENERALIZED)) || request->generalized_funcs->mutex==NULL)
+int Request::grequest_complete(MPI_Request request)
+{
+ if ((not(request->flags_ & MPI_REQ_GENERALIZED)) || request->generalized_funcs->mutex == nullptr)
return MPI_ERR_REQUEST;
request->generalized_funcs->mutex->lock();
request->flags_ |= MPI_REQ_COMPLETE; // in case wait would be called after complete
return MPI_SUCCESS;
}
-void Request::set_nbc_requests(MPI_Request* reqs, int size){
- nbc_requests_size_ = size;
- if (size > 0) {
+void Request::start_nbc_requests(std::vector<MPI_Request> reqs){
+ if (not reqs.empty()) {
nbc_requests_ = reqs;
- } else {
- delete[] reqs;
- nbc_requests_ = nullptr;
+ Request::startall(reqs.size(), reqs.data());
}
}
-int Request::get_nbc_requests_size(){
- return nbc_requests_size_;
-}
-
-MPI_Request* Request::get_nbc_requests(){
+std::vector<MPI_Request> Request::get_nbc_requests() const
+{
return nbc_requests_;
}
-
}
}
