examples/cpp/exec-dvfs/s4u-exec-dvfs
examples/cpp/exec-ptask/s4u-exec-ptask
examples/cpp/exec-ptask-multicore/s4u-exec-ptask-multicore
+examples/cpp/exec-ptask-multicore-latency/s4u-exec-ptask-multicore-latency
examples/cpp/exec-remote/s4u-exec-remote
examples/cpp/exec-unassigned/s4u-exec-unassigned
examples/cpp/exec-waitany/s4u-exec-waitany
energy-exec energy-boot energy-link energy-vm energy-exec-ptask energy-wifi
engine-filtering engine-run-partial
exec-async exec-basic exec-dvfs exec-remote exec-waitany exec-waitfor exec-dependent exec-unassigned
- exec-ptask-multicore exec-cpu-nonlinear exec-cpu-factors exec-failure
+ exec-ptask-multicore exec-ptask-multicore-latency exec-cpu-nonlinear exec-cpu-factors exec-failure
maestro-set
mc-bugged1 mc-bugged1-liveness mc-bugged2 mc-electric-fence mc-failing-assert
network-ns3 network-ns3-wifi network-wifi
--- /dev/null
+/* Copyright (c) 2017-2021. 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 <simgrid/s4u.hpp>
+
+XBT_LOG_NEW_DEFAULT_CATEGORY(s4u_ptask_multicore, "Messages specific for this s4u example");
+
+namespace sg4 = simgrid::s4u;
+
+static void runner()
+{
+ auto e = sg4::Engine::get_instance();
+ std::vector<double> comp(2, 1e9);
+ std::vector<double> comm(4, 0.0);
+ // Different hosts.
+ std::vector<sg4::Host*> hosts_diff = {e->host_by_name("MyHost1"), e->host_by_name("MyHost2")};
+ double start_time = sg4::Engine::get_clock();
+ sg4::this_actor::parallel_execute(hosts_diff, comp, comm);
+ XBT_INFO("Computed 2-core activity on two different hosts. Took %g s", e->get_clock() - start_time);
+
+ // Same host, multicore.
+ std::vector<sg4::Host*> multicore_host = {e->host_by_name("MyHost1"), e->host_by_name("MyHost1")};
+ start_time = sg4::Engine::get_clock();
+ sg4::this_actor::parallel_execute(multicore_host, comp, comm);
+ XBT_INFO("Computed 2-core activity on one 4-core host. Took %g s", e->get_clock() - start_time);
+
+ // Same host, using too many cores
+ std::vector<double> comp6(6, 1e9);
+ std::vector<double> comm6(36, 0.0);
+ std::vector<sg4::Host*> multicore_overload(6, e->host_by_name("MyHost1"));
+ start_time = sg4::Engine::get_clock();
+ sg4::this_actor::parallel_execute(multicore_overload, comp6, comm6);
+ XBT_INFO("Computed 6-core activity on a 4-core host. Took %g s", e->get_clock() - start_time);
+
+ // Same host, adding some communication
+ std::vector<double> comm2 = {0, 1E7, 1E7, 0};
+ start_time = sg4::Engine::get_clock();
+ sg4::this_actor::parallel_execute(multicore_host, comp, comm2);
+ XBT_INFO("Computed 2-core activity on a 4-core host with some communication. Took %g s", e->get_clock() - start_time);
+
+ // See if the multicore execution continues to work after changing pstate
+ XBT_INFO("Switching machine multicore to pstate 1.");
+ e->host_by_name("MyHost1")->set_pstate(1);
+ XBT_INFO("Switching back to pstate 0.");
+ e->host_by_name("MyHost1")->set_pstate(0);
+
+ start_time = sg4::Engine::get_clock();
+ sg4::this_actor::parallel_execute(multicore_host, comp, comm);
+ XBT_INFO("Computed 2-core activity on one 4-core host. Took %g s", e->get_clock() - start_time);
+
+ start_time = sg4::Engine::get_clock();
+ sg4::this_actor::parallel_execute(hosts_diff, comp, comm);
+ XBT_INFO("Computed 2-core activity on two different hosts. Took %g s", e->get_clock() - start_time);
+}
+
+int main(int argc, char* argv[])
+{
+ sg4::Engine e(&argc, argv);
+
+ xbt_assert(argc == 2, "Usage: %s <platform file>", argv[0]);
+
+ e.load_platform(argv[1]);
+ sg4::Actor::create("test", sg4::Host::by_name("MyHost1"), runner);
+
+ e.run();
+ XBT_INFO("Simulation done.");
+ return 0;
+}
--- /dev/null
+#!/usr/bin/env tesh
+
+$ ${bindir:=.}/s4u-exec-ptask-multicore-latency ${platfdir}/energy_cluster.xml --cfg=host/model:ptask_L07 --log=no_loc "--log=root.fmt:[%10.6r]%e%m%n"
+> [ 0.000000] Configuration change: Set 'host/model' to 'ptask_L07'
+> [ 0.000000] Switching to the L07 model to handle parallel tasks.
+> [ 10.000000] Computed 2-core activity on two different hosts. Took 10 s
+> [ 20.000000] Computed 2-core activity on one 4-core host. Took 10 s
+> [ 35.000000] Computed 6-core activity on a 4-core host. Took 15 s
+> [ 40.000600] Computed 2-core activity on a 4-core host with some communication. Took 10.0006 s
+> [ 40.000600] Switching machine multicore to pstate 1.
+> [ 40.000600] Switching back to pstate 0.
+> [ 50.000600] Computed 2-core activity on one 4-core host. Took 10 s
+> [ 60.000600] Computed 2-core activity on two different hosts. Took 10 s
+> [ 60.000600] Simulation done.
\ No newline at end of file
std::vector<sg4::Host*> multicore_host = {e->host_by_name("MyHost1"), e->host_by_name("MyHost1")};
start_time = sg4::Engine::get_clock();
sg4::this_actor::parallel_execute(multicore_host, comp, comm);
- XBT_INFO("Computed 2-core activity on one 2-core host. Took %g s", e->get_clock() - start_time);
+ XBT_INFO("Computed 2-core activity on one 4-core host. Took %g s", e->get_clock() - start_time);
// Same host, using too many cores
std::vector<double> comp6(6, 1e9);
std::vector<sg4::Host*> multicore_overload(6, e->host_by_name("MyHost1"));
start_time = sg4::Engine::get_clock();
sg4::this_actor::parallel_execute(multicore_overload, comp6, comm6);
- XBT_INFO("Computed 6-core activity of a 4-core host. Took %g s", e->get_clock() - start_time);
+ XBT_INFO("Computed 6-core activity on a 4-core host. Took %g s", e->get_clock() - start_time);
+
+ // Same host, adding some communication
+ std::vector<double> comm2 = {0, 1E7, 1E7, 0};
+ start_time = sg4::Engine::get_clock();
+ sg4::this_actor::parallel_execute(multicore_host, comp, comm2);
+ XBT_INFO("Computed 2-core activity on a 4-core host with some communication. Took %g s", e->get_clock() - start_time);
+
+ // See if the multicore execution continues to work after changing pstate
+ XBT_INFO("Switching machine multicore to pstate 1.");
+ e->host_by_name("MyHost1")->set_pstate(1);
+ XBT_INFO("Switching back to pstate 0.");
+ e->host_by_name("MyHost1")->set_pstate(0);
+
+ start_time = sg4::Engine::get_clock();
+ sg4::this_actor::parallel_execute(multicore_host, comp, comm);
+ XBT_INFO("Computed 2-core activity on one 4-core host. Took %g s", e->get_clock() - start_time);
+
+ start_time = sg4::Engine::get_clock();
+ sg4::this_actor::parallel_execute(hosts_diff, comp, comm);
+ XBT_INFO("Computed 2-core activity on two different hosts. Took %g s", e->get_clock() - start_time);
+
+ // Add a background task and change ptask on the fly
+ auto MyHost1 = e->host_by_name("MyHost1");
+ simgrid::s4u::ExecPtr background_task = MyHost1->exec_async(5e9);
+ background_task->start();
+ XBT_INFO("Start a 1-core background task on the 4-core host.");
+
+ start_time = sg4::Engine::get_clock();
+ sg4::this_actor::parallel_execute(multicore_host, comp, comm);
+ XBT_INFO("Computed 2-core activity on the 4-core host. Took %g s", e->get_clock() - start_time);
+ XBT_INFO("Remaining amount of work for the background task: %.0f%%",
+ 100 * background_task->get_remaining_ratio());
+
+ XBT_INFO("Switching to pstate 1 while background task is still running.");
+ MyHost1->set_pstate(1);
+ start_time = sg4::Engine::get_clock();
+ sg4::this_actor::parallel_execute(multicore_host, comp, comm);
+ XBT_INFO("Computed again the same 2-core activity on it. Took %g s", e->get_clock() - start_time);
+
+ background_task->wait();
+ XBT_INFO("The background task has ended.");
}
int main(int argc, char* argv[])
> [ 30.000000] Computed 2-core activity one 1-core host. Took 20 s
> [ 40.000000] Computed 2-core activity on one 2-core host. Took 10 s
> [ 55.000000] Computed 6-core activity of a 4-core host. Took 15 s
+> [ 65.000000] Computed 2-core activity on a 4-core host with some communication. Took 10 s
+> [ 65.000000] Switching machine multicore to pstate 1.
+> [ 65.000000] Switching back to pstate 0.
+> [ 75.000000] Computed 2-core activity on one 4-core host. Took 10 s
+> [ 85.000000] Computed 2-core activity on two different hosts. Took 10 s
+> [ 85.000000] Simulation done.
> [ 55.000000] Simulation done.
\ No newline at end of file
