plugins are the future, this example pertains to S4U

diff --git a/examples/s4u/CMakeLists.txt b/examples/s4u/CMakeLists.txt
index dfdc634..7f5486e 100644 (file)
--- a/examples/s4u/CMakeLists.txt
+++ b/examples/s4u/CMakeLists.txt
@@ -1,5 +1,5 @@
 foreach (example actions-comm actions-storage actor-create actor-daemon actor-kill actor-migration actor-suspend 
-                 app-masterworker app-token-ring io  mutex )
+                 app-masterworker app-token-ring plugin-hostload io mutex )
   add_executable       (s4u_${example}  ${example}/s4u_${example}.cpp)
   target_link_libraries(s4u_${example}  simgrid)
   set_target_properties(s4u_${example}  PROPERTIES RUNTIME_OUTPUT_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/${example})
@@ -32,6 +32,6 @@ set(txt_files     ${txt_files}    ${CMAKE_CURRENT_SOURCE_DIR}/actions-comm/s4u_a
                                   ${CMAKE_CURRENT_SOURCE_DIR}/README.doc                                   PARENT_SCOPE)
 
 foreach(example actions-comm actions-storage actor-create actor-daemon actor-kill actor-migration actor-suspend 
-                 app-masterworker app-token-ring dht-chord io mutex )
+                 app-masterworker app-token-ring dht-chord plugin-hostload io mutex )
   ADD_TESH_FACTORIES(s4u-${example} "thread;ucontext;raw;boost" --setenv bindir=${CMAKE_CURRENT_BINARY_DIR}/${example} --setenv srcdir=${CMAKE_HOME_DIRECTORY}/examples/platforms --cd ${CMAKE_HOME_DIRECTORY}/examples/s4u/${example} s4u_${example}.tesh)
 endforeach()

diff --git a/examples/s4u/plugin-hostload/s4u_plugin-hostload.cpp b/examples/s4u/plugin-hostload/s4u_plugin-hostload.cpp
new file mode 100644 (file)
index 0000000..3f6efc4
--- /dev/null
+++ b/examples/s4u/plugin-hostload/s4u_plugin-hostload.cpp
@@ -0,0 +1,85 @@
+/* Copyright (c) 2007-2010, 2013-2015. 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"
+#include "simgrid/plugins/load.h"
+
+XBT_LOG_NEW_DEFAULT_CATEGORY(s4u_test, "Messages specific for this s4u example");
+
+static void execute_load_test()
+{
+  s4u_Host* host = simgrid::s4u::Host::by_name("MyHost1");
+
+  XBT_INFO("Initial peak speed: %.0E flop/s; number of flops computed so far: %.0E (should be 0)", host->getSpeed(),
+           sg_host_get_computed_flops(host));
+
+  double start = simgrid::s4u::Engine::getClock();
+  XBT_INFO("Sleep for 10 seconds");
+  simgrid::s4u::this_actor::sleep_for(10);
+
+  XBT_INFO("Done sleeping %.2fs; peak speed: %.0E flop/s; number of flops computed so far: %.0E (nothing should have "
+           "changed)",
+           simgrid::s4u::Engine::getClock() - start, host->getSpeed(), sg_host_get_computed_flops(host));
+
+  // Run a task
+  start = simgrid::s4u::Engine::getClock();
+  XBT_INFO("Run a task of %.0E flops", 100E6);
+  simgrid::s4u::this_actor::execute(100E6);
+
+  XBT_INFO("Done working on my task; this took %.2fs; current peak speed: %.0E flop/s; number of flops computed so "
+           "far: %.0E",
+           simgrid::s4u::Engine::getClock() - start, host->getSpeed(), sg_host_get_computed_flops(host));
+
+  // ========= Change power peak =========
+  int pstate = 2;
+  host->setPstate(pstate);
+  XBT_INFO("========= Requesting pstate %d (speed should be of %.0E flop/s and is of %.0E flop/s)", pstate,
+           host->getPstateSpeed(pstate), host->getSpeed());
+
+  // Run a second task
+  start = simgrid::s4u::Engine::getClock();
+  XBT_INFO("Run a task of %.0E flops", 100E6);
+  simgrid::s4u::this_actor::execute(100E6);
+  XBT_INFO("Done working on my task; this took %.2fs; current peak speed: %.0E flop/s; number of flops computed so "
+           "far: %.0E",
+           simgrid::s4u::Engine::getClock() - start, host->getSpeed(), sg_host_get_computed_flops(host));
+
+  start = simgrid::s4u::Engine::getClock();
+  XBT_INFO("========= Requesting a reset of the computation counter");
+  sg_host_load_reset(host);
+  XBT_INFO("Sleep for 4 seconds");
+  simgrid::s4u::this_actor::sleep_for(4);
+  XBT_INFO("Done sleeping %.2f s; peak speed: %.0E flop/s; number of flops computed so far: %.0E",
+           simgrid::s4u::Engine::getClock() - start, host->getSpeed(), sg_host_get_computed_flops(host));
+
+  // =========== Turn the other host off ==========
+  s4u_Host* host2 = simgrid::s4u::Host::by_name("MyHost2");
+  XBT_INFO("Turning MyHost2 off, and sleeping another 10 seconds. MyHost2 computed %.0f flops so far.",
+           sg_host_get_computed_flops(host2));
+  host2->turnOff();
+  start = simgrid::s4u::Engine::getClock();
+  simgrid::s4u::this_actor::sleep_for(10);
+  XBT_INFO("Done sleeping %.2f s; peak speed: %.0E flop/s; number of flops computed so far: %.0E",
+           simgrid::s4u::Engine::getClock() - start, host->getSpeed(), sg_host_get_computed_flops(host));
+}
+
+int main(int argc, char* argv[])
+{
+  sg_host_load_plugin_init();
+  simgrid::s4u::Engine* e = new simgrid::s4u::Engine(&argc, argv);
+
+  xbt_assert(argc == 2, "Usage: %s platform_file\n\tExample: %s msg_platform.xml\n", argv[0], argv[0]);
+  e->loadPlatform(argv[1]);
+
+  simgrid::s4u::Actor::createActor("load_test", simgrid::s4u::Host::by_name("MyHost1"), execute_load_test);
+
+  e->run();
+
+  XBT_INFO("Total simulation time: %.2f", simgrid::s4u::Engine::getClock());
+
+  delete e;
+  return 0;
+}

diff --git a/examples/s4u/plugin-hostload/s4u_plugin-hostload.tesh b/examples/s4u/plugin-hostload/s4u_plugin-hostload.tesh
new file mode 100644 (file)
index 0000000..5e9b67e
--- /dev/null
+++ b/examples/s4u/plugin-hostload/s4u_plugin-hostload.tesh
@@ -0,0 +1,19 @@
+#! ./tesh
+
+p This tests the HostLoad plugin (this allows the user to get the current load of a host and the computed flops)
+
+$ ${bindir:=.}/s4u_plugin-hostload$EXEEXT ${srcdir:=.}/../platforms/energy_platform.xml "--log=root.fmt:[%10.6r]%e(%i:%P@%h)%e%m%n"
+> [  0.000000] (1:load_test@MyHost1) Initial peak speed: 1E+08 flop/s; number of flops computed so far: 0E+00 (should be 0)
+> [  0.000000] (1:load_test@MyHost1) Sleep for 10 seconds
+> [ 10.000000] (1:load_test@MyHost1) Done sleeping 10.00s; peak speed: 1E+08 flop/s; number of flops computed so far: 0E+00 (nothing should have changed)
+> [ 10.000000] (1:load_test@MyHost1) Run a task of 1E+08 flops
+> [ 11.000000] (1:load_test@MyHost1) Done working on my task; this took 1.00s; current peak speed: 1E+08 flop/s; number of flops computed so far: 1E+08
+> [ 11.000000] (1:load_test@MyHost1) ========= Requesting pstate 2 (speed should be of 2E+07 flop/s and is of 2E+07 flop/s)
+> [ 11.000000] (1:load_test@MyHost1) Run a task of 1E+08 flops
+> [ 16.000000] (1:load_test@MyHost1) Done working on my task; this took 5.00s; current peak speed: 2E+07 flop/s; number of flops computed so far: 2E+08
+> [ 16.000000] (1:load_test@MyHost1) ========= Requesting a reset of the computation counter
+> [ 16.000000] (1:load_test@MyHost1) Sleep for 4 seconds
+> [ 20.000000] (1:load_test@MyHost1) Done sleeping 4.00 s; peak speed: 2E+07 flop/s; number of flops computed so far: 0E+00
+> [ 20.000000] (1:load_test@MyHost1) Turning MyHost2 off, and sleeping another 10 seconds. MyHost2 computed 0 flops so far.
+> [ 30.000000] (1:load_test@MyHost1) Done sleeping 10.00 s; peak speed: 2E+07 flop/s; number of flops computed so far: 0E+00
+> [ 30.000000] (0:maestro@) Total simulation time: 30.00