New: Engine::run_until(date) to split the simulation

[simgrid.git] / src / smpi / internals / smpi_deployment.cpp

diff --git a/src/smpi/internals/smpi_deployment.cpp b/src/smpi/internals/smpi_deployment.cpp
index a11042e..526ee28 100644 (file)
--- a/src/smpi/internals/smpi_deployment.cpp
+++ b/src/smpi/internals/smpi_deployment.cpp
@@ -7,6 +7,7 @@
 #include "smpi_host.hpp"
 #include "private.hpp"
 #include "simgrid/s4u/Engine.hpp"
+#include "simgrid/s4u/Barrier.hpp"
 #include "smpi_comm.hpp"
 #include <map>
 
@@ -20,17 +21,14 @@ static int universe_size = 0;
 
 class Instance {
 public:
-  Instance(int max_no_processes) : size_(max_no_processes)
+  explicit Instance(int max_no_processes) : size_(max_no_processes)
   {
     auto* group = new simgrid::smpi::Group(size_);
     comm_world_ = new simgrid::smpi::Comm(group, nullptr, false, -1);
-    //  FIXME : using MPI_Attr_put with MPI_UNIVERSE_SIZE is forbidden and we make it a no-op (which triggers a warning
-    //  as MPI_ERR_ARG is returned). Directly calling Comm::attr_put breaks for now, as MPI_UNIVERSE_SIZE,is <0
-    //  instance.comm_world->attr_put<simgrid::smpi::Comm>(MPI_UNIVERSE_SIZE, reinterpret_cast<void*>(instance.size));
-
     universe_size += max_no_processes;
+    bar_ = std::make_shared<s4u::Barrier>(size_);
   }
-
+  std::shared_ptr<s4u::Barrier> bar_;
   unsigned int size_;
   unsigned int finalized_ranks_ = 0;
   MPI_Comm comm_world_;
@@ -69,6 +67,12 @@ void smpi_deployment_register_process(const std::string& instance_id, int rank,
   instance.comm_world_->group()->set_mapping(actor->get_pid(), rank);
 }
 
+void smpi_deployment_startup_barrier(const std::string& instance_id)
+{
+  const Instance& instance = smpi_instances.at(instance_id);
+  instance.bar_->wait();
+}
+
 void smpi_deployment_unregister_process(const std::string& instance_id)
 {
   Instance& instance = smpi_instances.at(instance_id);
@@ -141,20 +145,16 @@ static std::vector<std::string> smpi_read_replay(const std::string& replayfile)
 }
 
 /** @brief Build argument vector to pass to process */
-static std::vector<std::string> smpi_deployment_get_args(int rank_id, const std::vector<std::string>& replay, int argc,
-                                                         char* argv[])
+static std::vector<std::string> smpi_deployment_get_args(int rank_id, const std::vector<std::string>& replay,
+                                                         const std::vector<const char*>& run_args)
 {
   std::vector<std::string> args{std::to_string(rank_id)};
   // pass arguments to process only if not a replay execution
-  if (replay.empty()) {
-    for (int i = 0; i < argc; i++) {
-      args.emplace_back(argv[i]);
-    }
-  }
+  if (replay.empty())
+    args.insert(args.end(), begin(run_args), end(run_args));
   /* one trace per process */
-  if (replay.size() > 1) {
+  if (replay.size() > 1)
     args.emplace_back(replay[rank_id]);
-  }
   return args;
 }
 
@@ -165,7 +165,7 @@ static std::vector<std::string> smpi_deployment_get_args(int rank_id, const std:
  * If hostfile isn't provided, get the list of hosts from engine.
  */
 int smpi_deployment_smpirun(const simgrid::s4u::Engine* e, const std::string& hostfile, int np,
-                            const std::string& replayfile, int map, int argc, char* argv[])
+                            const std::string& replayfile, int map, const std::vector<const char*>& run_args)
 {
   auto hosts     = smpi_get_hosts(e, hostfile);
   auto replay    = smpi_read_replay(replayfile);
@@ -182,7 +182,7 @@ int smpi_deployment_smpirun(const simgrid::s4u::Engine* e, const std::string& ho
   for (int i = 0; i < np; i++) {
     simgrid::s4u::Host* host = hosts[i % hosts_size];
     std::string rank_id      = std::to_string(i);
-    auto args                = smpi_deployment_get_args(i, replay, argc, argv);
+    auto args                = smpi_deployment_get_args(i, replay, run_args);
     auto actor               = simgrid::s4u::Actor::create(rank_id, host, rank_id, args);
     /* keeping the same behavior as done in smpirun script, print mapping rank/process */
     if (map != 0) {