#include "smpi_comm.hpp"
#include <map>
-XBT_LOG_EXTERNAL_CATEGORY(smpi);
+XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(smpi);
namespace simgrid {
namespace smpi {
smpi_instances.insert(std::pair<std::string, Instance>(name, instance));
}
-void smpi_deployment_register_process(const std::string& instance_id, int rank, simgrid::s4u::Actor* actor)
+void smpi_deployment_register_process(const std::string& instance_id, int rank, const simgrid::s4u::Actor* actor)
{
const Instance& instance = smpi_instances.at(instance_id);
- instance.comm_world_->group()->set_mapping(actor, rank);
+ instance.comm_world_->group()->set_mapping(actor->get_pid(), rank);
}
void smpi_deployment_unregister_process(const std::string& instance_id)
void smpi_deployment_cleanup_instances(){
for (auto const& item : smpi_instances) {
- XBT_CINFO(smpi, "Stalling SMPI instance: %s. Do all your MPI ranks call MPI_Finalize()?", item.first.c_str());
+ XBT_INFO("Stalling SMPI instance: %s. Do all your MPI ranks call MPI_Finalize()?", item.first.c_str());
Instance instance = item.second;
simgrid::smpi::Comm::destroy(instance.comm_world_);
}
{
return simgrid::smpi::app::universe_size;
}
+
+/** @brief Auxiliary method to get list of hosts to deploy app */
+static std::vector<simgrid::s4u::Host*> smpi_get_hosts(simgrid::s4u::Engine* e, const std::string& hostfile)
+{
+ if (hostfile == "") {
+ return e->get_all_hosts();
+ }
+ std::vector<simgrid::s4u::Host*> hosts;
+ std::ifstream in(hostfile.c_str());
+ xbt_assert(in, "smpirun: Cannot open the host file: %s", hostfile.c_str());
+ std::string str;
+ while (std::getline(in, str)) {
+ if (not str.empty())
+ hosts.emplace_back(e->host_by_name(str));
+ }
+ xbt_assert(not hosts.empty(), "smpirun: the hostfile '%s' is empty", hostfile.c_str());
+ return hosts;
+}
+
+/** @brief Read replay configuration from file */
+static std::vector<std::string> smpi_read_replay(const std::string& replayfile)
+{
+ std::vector<std::string> replay;
+ if (replayfile == "")
+ return replay;
+
+ std::ifstream in(replayfile.c_str());
+ xbt_assert(in, "smpirun: Cannot open the replay file: %s", replayfile.c_str());
+ std::string str;
+ while (std::getline(in, str)) {
+ if (not str.empty())
+ replay.emplace_back(str);
+ }
+
+ return replay;
+}
+
+/** @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[])
+{
+ 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.push_back(argv[i]);
+ }
+ }
+ /* one trace per process */
+ if (replay.size() > 1) {
+ args.push_back(replay[rank_id]);
+ }
+ return args;
+}
+
+/**
+ * @brief Deploy an SMPI application from a smpirun call
+ *
+ * This used to be done at smpirun script, parsing either the hostfile or the platform XML.
+ * If hostfile isn't provided, get the list of hosts from engine.
+ */
+int smpi_deployment_smpirun(simgrid::s4u::Engine* e, const std::string& hostfile, int np, const std::string& replayfile,
+ int map, int argc, char* argv[])
+{
+ auto hosts = smpi_get_hosts(e, hostfile);
+ auto replay = smpi_read_replay(replayfile);
+ int hosts_size = static_cast<int>(hosts.size());
+ if (np == 0)
+ np = hosts_size;
+
+ xbt_assert(np > 0, "Invalid number of process (np must be > 0). Check your np parameter, platform or hostfile");
+
+ if (np > hosts_size) {
+ XBT_INFO("You requested to use %d ranks, but there is only %d processes in your hostfile...", np, hosts_size);
+ }
+
+ 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 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) {
+ XBT_INFO("[rank %d] -> %s", i, host->get_cname());
+ }
+ actor->set_property("instance_id", "smpirun");
+ actor->set_property("rank", rank_id);
+ if (not replay.empty())
+ actor->set_property("smpi_replay", "true");
+ /* shared trace file, set it to rank 0 */
+ if (i == 0 && replay.size() == 1)
+ actor->set_property("tracefile", replay[0]);
+ }
+ return np;
+}
