--- /dev/null
+.. _simdag:
+
+Simulating DAG
+==============
+
+This tutorial presents the basics to understand how DAG are represented in Simgrid and how to simulate their workflow.
+
+Definition of a DAG
+-------------------
+
+Directed Acyclic Graph:
+
+.. math::
+
+ \mathcal{G} = (\mathcal{V},\mathcal{E})
+
+Set of vertices representing :ref:`Activities <API_s4u_Activity>`:
+
+.. math::
+
+ \mathcal{V} = {v_i | i = 1, ..., V}
+
+Set of edges representing precedence constraints between :ref:`Activities <API_s4u_Activity>`:
+
+.. math::
+
+ \mathcal{E} = {e_i,j | (i,j) \in {1, ..., V} x {1, ..., V}}
+
+.. image:: /tuto_dag/img/dag.svg
+ :align: center
+
+Representing Vertices/Activities
+................................
+
+There is two types of :ref:`Activities <API_s4u_Activity>` that can represent Vertices: :ref:`Exec <API_s4u_Exec>` and :ref:`Comm <API_s4u_Comm>`.
+Thoses activities must be initiated and configured to properly describe your worflow.
+
+An Exec represents the execution of an amount of flop on a :ref:`Host <API_s4u_Host>` of your platform.
+
+.. code-block:: cpp
+
+ ExecPtr exec = Exec::init();
+ exec->set_flops_amount(int);
+ exec->set_host(Host*);
+ exec->start();
+
+A Comm represents a data transfer between two :ref:`Hosts <API_s4u_Host>` of your platform.
+
+.. code-block:: cpp
+
+ CommPtr comm = Comm::sendto_init();
+ comm->set_source(Host*);
+ comm->set_destination(Host*);
+ comm->start();
+
+Representing Edges/Dependencies
+...............................
+
+An activity will not start until all of its dependencies have been completed.
+Activities may have any number of successors.
+Dependencies between Activities are created using :cpp:func:`Activity::add_successor(ActivityPtr)`.
+
+.. code-block:: cpp
+
+ exec->add_successor(comm);
+
+The Activity ``comm`` will not start until ``exec`` has been completed.
+
+Lab 1: Basics
+---------------
+
+The goal of this lab is to describe the following DAG:
+
+.. image:: /tuto_dag/img/dag1.svg
+ :align: center
+
+In this DAG we want ``c1`` to compute 1e9 flops, ``c2`` to compute 5e9 flops and ``c3`` to compute 2e9 flops.
+There is also a data transfer of 5e8 bytes between ``c1`` and ``c3``.
+
+First of all, include the Simgrid library and define the log category.
+
+.. code-block:: cpp
+
+ #include "simgrid/s4u.hpp"
+
+ XBT_LOG_NEW_DEFAULT_CATEGORY(main, "Messages specific for this s4u tutorial");
+
+Inside the ``main`` function create an instance of :ref:`Engine <API_s4u_Engine>` and load the platform.
+
+.. code-block:: cpp
+
+ simgrid::s4u::Engine e(&argc, argv);
+ e.load_platform(argv[1]);
+
+Retrieve pointers to some hosts.
+
+.. code-block:: cpp
+
+ simgrid::s4u::Host* tremblay = e.host_by_name("Tremblay");
+ simgrid::s4u::Host* jupiter = e.host_by_name("Jupiter");
+
+Initiate the activities.
+
+.. code-block:: cpp
+
+ simgrid::s4u::ExecPtr c1 = simgrid::s4u::Exec::init();
+ simgrid::s4u::ExecPtr c2 = simgrid::s4u::Exec::init();
+ simgrid::s4u::ExecPtr c3 = simgrid::s4u::Exec::init();
+ simgrid::s4u::CommPtr t1 = simgrid::s4u::Comm::sendto_init();
+
+Give names to thoses activities.
+
+.. code-block:: cpp
+
+ c1->set_name("c1");
+ c2->set_name("c2");
+ c3->set_name("c3");
+ t1->set_name("t1");
+
+Set the amount of work for each activity.
+
+.. code-block:: cpp
+
+ c1->set_flops_amount(1e9);
+ c2->set_flops_amount(5e9);
+ c3->set_flops_amount(2e9);
+ t1->set_payload_size(5e8);
+
+Define the dependencies between the activities.
+
+.. code-block:: cpp
+
+ c1->add_successor(t1);
+ t1->add_successor(c3);
+ c2->add_successor(c3);
+
+Set the location of each Exec activity and source and destination for the Comm activity.
+
+.. code-block:: cpp
+
+ c1->set_host(tremblay);
+ c2->set_host(jupiter);
+ c3->set_host(jupiter);
+ t1->set_source(tremblay);
+ t1->set_destination(jupiter);
+
+Start the executions of Activities without dependencies.
+
+.. code-block:: cpp
+
+ c1->start();
+ c2->start();
+
+Add a callback to monitor the activities.
+
+.. code-block:: cpp
+
+ Activity::on_completion_cb([](simgrid::s4u::Activity const& activity) {
+ XBT_INFO("Activity '%s' is complete (start time: %f, finish time: %f)", activity.get_cname(), activity.get_start_time(),
+ activity.get_finish_time());
+ });
+
+Finally, run the simulation.
+
+.. code-block:: cpp
+
+ e.run();
+
+The execution of this code should give you the following output:
+
+.. code-block:: bash
+
+ [10.194200] [main/INFO] Activity 'c1' is complete (start time: 0.000000, finish time: 10.194200)
+ [65.534235] [main/INFO] Activity 'c2' is complete (start time: 0.000000, finish time: 65.534235)
+ [85.283378] [main/INFO] Activity 't1' is complete (start time: 10.194200, finish time: 85.283378)
+ [111.497072] [main/INFO] Activity 'c3' is complete (start time: 85.283378, finish time: 111.497072)
+
+Lab 2: Import a DAG from a file
+---------------
+
+In this lab we present how to import a DAG into you Simgrid simulation, either using a DOT file, a JSON file, or a DAX file.
+
+The files presented in this lab describe the following DAG:
+
+.. image:: /tuto_dag/img/dag2.svg
+ :align: center
+
+From a DOT file
+...............
+
+A DOT file describes a workflow in accordance with the graphviz format.
+
+The following DOT file describes the workflow presented at the beginning of this lab:
+
+.. code-block:: xml
+
+ digraph G {
+ c1 [size="1e9"];
+ c2 [size="5e9"];
+ c3 [size="2e9"];
+
+ root->c1 [size="2e8"];
+ root->c2 [size="1e8"];
+ c1->c3 [size="5e8"];
+ c2->c3 [size="-1"];
+ c3->end [size="2e8"];
+ }
+
+It can be imported as a vector of Activities into Simgrid using :cpp:func:`create_DAG_from_DOT(const std::string& filename)`. Then, you have to assign hosts to your Activities.
+
+.. code-block:: cpp
+
+ #include "simgrid/s4u.hpp"
+
+ XBT_LOG_NEW_DEFAULT_CATEGORY(main, "Messages specific for this s4u example");
+
+ int main(int argc, char* argv[]) {
+ simgrid::s4u::Engine e(&argc, argv);
+ e.load_platform(argv[1]);
+
+ std::vector<simgrid::s4u::ActivityPtr> dag = simgrid::s4u::create_DAG_from_dot(argv[2]);
+
+ simgrid::s4u::Host* tremblay = e.host_by_name("Tremblay");
+ simgrid::s4u::Host* jupiter = e.host_by_name("Jupiter");
+ simgrid::s4u::Host* fafard = e.host_by_name("Fafard");
+
+ dynamic_cast<simgrid::s4u::Exec*>(dag[0].get())->set_host(fafard);
+ dynamic_cast<simgrid::s4u::Exec*>(dag[1].get())->set_host(tremblay);
+ dynamic_cast<simgrid::s4u::Exec*>(dag[2].get())->set_host(jupiter);
+ dynamic_cast<simgrid::s4u::Exec*>(dag[3].get())->set_host(jupiter);
+ dynamic_cast<simgrid::s4u::Exec*>(dag[8].get())->set_host(jupiter);
+
+ for (const auto& a : dag) {
+ if (auto* comm = dynamic_cast<simgrid::s4u::Comm*>(a.get())) {
+ auto pred = dynamic_cast<simgrid::s4u::Exec*>((*comm->get_dependencies().begin()).get());
+ auto succ = dynamic_cast<simgrid::s4u::Exec*>(comm->get_successors().front().get());
+ comm->set_source(pred->get_host())->set_destination(succ->get_host());
+ }
+ }
+
+ simgrid::s4u::Activity::on_completion_cb([](simgrid::s4u::Activity const& activity) {
+ XBT_INFO("Activity '%s' is complete (start time: %f, finish time: %f)", activity.get_cname(), activity.get_start_time(),
+ activity.get_finish_time());
+ });
+
+ e.run();
+ return 0;
+ }
+
+The execution of this code should give you the following output:
+
+.. code-block:: bash
+
+ [0.000000] [main/INFO] Activity 'root' is complete (start time: 0.000000, finish time: 0.000000)
+ [33.394394] [main/INFO] Activity 'root->c2' is complete (start time: 0.000000, finish time: 33.394394)
+ [39.832311] [main/INFO] Activity 'root->c1' is complete (start time: 0.000000, finish time: 39.832311)
+ [50.026511] [main/INFO] Activity 'c1' is complete (start time: 39.832311, finish time: 50.026511)
+ [98.928629] [main/INFO] Activity 'c2' is complete (start time: 33.394394, finish time: 98.928629)
+ [125.115689] [main/INFO] Activity 'c1->c3' is complete (start time: 50.026511, finish time: 125.115689)
+ [151.329383] [main/INFO] Activity 'c3' is complete (start time: 125.115689, finish time: 151.329383)
+ [151.743605] [main/INFO] Activity 'c3->end' is complete (start time: 151.329383, finish time: 151.743605)
+ [151.743605] [main/INFO] Activity 'end' is complete (start time: 151.743605, finish time: 151.743605)
+
+From a JSON file
+................
+
+A JSON file describes a workflow in accordance with the `wfformat <https://github.com/wfcommons/wfformat>`_ .
+
+The following JSON file describes the workflow presented at the beginning of this lab:
+
+.. code-block:: JSON
+
+ {
+ "name": "simple_json",
+ "schemaVersion": "1.0",
+ "workflow": {
+ "makespan": 0,
+ "executedAt": "2023-03-09T00:00:00-00:00",
+ "tasks": [
+ {
+ "name": "c1",
+ "type": "compute",
+ "parents": [],
+ "runtime": 1e9,
+ "machine": "Tremblay"
+ },
+ {
+ "name": "t1",
+ "type": "transfer",
+ "parents": ["c1"],
+ "bytesWritten": 5e8,
+ "machine": "Jupiter"
+ },
+ {
+ "name": "c2",
+ "type": "compute",
+ "parents": [],
+ "runtime": 5e9,
+ "machine": "Jupiter"
+ },
+ {
+ "name": "c3",
+ "type": "compute",
+ "parents": ["t1","c2"],
+ "runtime": 2e9,
+ "machine": "Jupiter"
+ }
+ ],
+ "machines": [
+ {"nodeName": "Tremblay"},
+ {"nodeName": "Jupiter"}
+ ]
+ }
+ }
+
+It can be imported as a vector of Activities into Simgrid using :cpp:func:`create_DAG_from_json(const std::string& filename)`.
+
+.. code-block:: cpp
+
+ #include "simgrid/s4u.hpp"
+
+ XBT_LOG_NEW_DEFAULT_CATEGORY(main, "Messages specific for this s4u example");
+
+ int main(int argc, char* argv[]) {
+ simgrid::s4u::Engine e(&argc, argv);
+ e.load_platform(argv[1]);
+
+ std::vector<simgrid::s4u::ActivityPtr> dag = simgrid::s4u::create_DAG_from_json(argv[2]);
+
+ simgrid::s4u::Activity::on_completion_cb([](simgrid::s4u::Activity const& activity) {
+ XBT_INFO("Activity '%s' is complete (start time: %f, finish time: %f)", activity.get_cname(), activity.get_start_time(),
+ activity.get_finish_time());
+ });
+
+ e.run();
+ return 0;
+ }
+
+The execution of this code should give you the following output:
+
+.. code-block:: bash
+
+ [10.194200] [main/INFO] Activity 'c1' is complete (start time: 0.000000, finish time: 10.194200)
+ [65.534235] [main/INFO] Activity 'c2' is complete (start time: 0.000000, finish time: 65.534235)
+ [85.283378] [main/INFO] Activity 't1' is complete (start time: 10.194200, finish time: 85.283378)
+ [111.497072] [main/INFO] Activity 'c3' is complete (start time: 85.283378, finish time: 111.497072)
+
+From a DAX file [deprecated]
+............................
+
+A DAX file describes a workflow in accordance with the `Pegasus <http://pegasus.isi.edu/>`_ format.
+
+The following DAX file describes the workflow presented at the beginning of this lab:
+
+.. code-block:: xml
+
+ <?xml version="1.0" encoding="UTF-8"?>
+ <adag xmlns="http://pegasus.isi.edu/schema/DAX" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+ xsi:schemaLocation="http://pegasus.isi.edu/schema/DAX http://pegasus.isi.edu/schema/dax-2.1.xsd"
+ version="2.1">
+ <job id="1" name="c1" runtime="10">
+ <uses file="i1" link="input" register="true" transfer="true" optional="false" type="data" size="2e8"/>
+ <uses file="o1" link="output" register="true" transfer="true" optional="false" type="data" size="5e8"/>
+ </job>
+ <job id="2" name="c2" runtime="50">
+ <uses file="i2" link="input" register="true" transfer="true" optional="false" type="data" size="1e8"/>
+ </job>
+ <job id="3" name="c3" runtime="20">
+ <uses file="o1" link="input" register="true" transfer="true" optional="false" type="data" size="5e8"/>
+ <uses file="o3" link="output" register="true" transfer="true" optional="false" type="data" size="2e8"/>
+ </job>
+ <child ref="3">
+ <parent ref="1"/>
+ <parent ref="2"/>
+ </child>
+ </adag>
+
+It can be imported as a vector of Activities into Simgrid using :cpp:func:`create_DAG_from_DAX(std::string)`.
+
+.. code-block:: cpp
+
+ #include "simgrid/s4u.hpp"
+
+ XBT_LOG_NEW_DEFAULT_CATEGORY(main, "Messages specific for this s4u example");
+
+ int main(int argc, char* argv[]) {
+ simgrid::s4u::Engine e(&argc, argv);
+ e.load_platform(argv[1]);
+
+ std::vector<simgrid::s4u::ActivityPtr> dag = simgrid::s4u::create_DAG_from_DAX(argv[2]);
+
+ simgrid::s4u::Host* tremblay = e.host_by_name("Tremblay");
+ simgrid::s4u::Host* jupiter = e.host_by_name("Jupiter");
+ simgrid::s4u::Host* fafard = e.host_by_name("Fafard");
+
+ dynamic_cast<simgrid::s4u::Exec*>(dag[0].get())->set_host(fafard);
+ dynamic_cast<simgrid::s4u::Exec*>(dag[1].get())->set_host(tremblay);
+ dynamic_cast<simgrid::s4u::Exec*>(dag[2].get())->set_host(jupiter);
+ dynamic_cast<simgrid::s4u::Exec*>(dag[3].get())->set_host(jupiter);
+ dynamic_cast<simgrid::s4u::Exec*>(dag[8].get())->set_host(jupiter);
+
+ for (const auto& a : dag) {
+ if (auto* comm = dynamic_cast<simgrid::s4u::Comm*>(a.get())) {
+ auto pred = dynamic_cast<simgrid::s4u::Exec*>((*comm->get_dependencies().begin()).get());
+ auto succ = dynamic_cast<simgrid::s4u::Exec*>(comm->get_successors().front().get());
+ comm->set_source(pred->get_host())->set_destination(succ->get_host());
+ }
+ }
+
+ simgrid::s4u::Activity::on_completion_cb([](simgrid::s4u::Activity const& activity) {
+ XBT_INFO("Activity '%s' is complete (start time: %f, finish time: %f)", activity.get_cname(), activity.get_start_time(),
+ activity.get_finish_time());
+ });
+
+ e.run();
+ return 0;
+ }
+
Simulating distributed algorithms <Tutorial_Algorithms.rst>
Simulating MPI applications <Tutorial_MPI_Applications.rst>
Model-checking algorithms <Tutorial_Model-checking.rst>
+ Simulating DAG <Tutorial_DAG.rst>
.. toctree::
:hidden:
--- /dev/null
+#include "simgrid/s4u.hpp"
+
+XBT_LOG_NEW_DEFAULT_CATEGORY(main, "Messages specific for this s4u tutorial");
+
+int main(int argc, char* argv[]) {
+ simgrid::s4u::Engine e(&argc, argv);
+ e.load_platform(argv[1]);
+
+ simgrid::s4u::Host* tremblay = e.host_by_name("Tremblay");
+ simgrid::s4u::Host* jupiter = e.host_by_name("Jupiter");
+
+ simgrid::s4u::ExecPtr c1 = simgrid::s4u::Exec::init();
+ simgrid::s4u::ExecPtr c2 = simgrid::s4u::Exec::init();
+ simgrid::s4u::ExecPtr c3 = simgrid::s4u::Exec::init();
+ simgrid::s4u::CommPtr t1 = simgrid::s4u::Comm::sendto_init();
+
+ c1->set_name("c1");
+ c2->set_name("c2");
+ c3->set_name("c3");
+ t1->set_name("t1");
+
+ c1->set_flops_amount(1e9);
+ c2->set_flops_amount(5e9);
+ c3->set_flops_amount(2e9);
+ t1->set_payload_size(5e8);
+
+ c1->add_successor(t1);
+ t1->add_successor(c3);
+ c2->add_successor(c3);
+
+ c1->set_host(tremblay);
+ c2->set_host(jupiter);
+ c3->set_host(jupiter);
+ t1->set_source(tremblay);
+ t1->set_destination(jupiter);
+
+ c1->start();
+ c2->start();
+
+ simgrid::s4u::Activity::on_completion_cb([](simgrid::s4u::Activity const& activity) {
+ XBT_INFO("Activity '%s' is complete (start time: %f, finish time: %f)", activity.get_cname(), activity.get_start_time(),
+ activity.get_finish_time());
+ });
+
+ e.run();
+ return 0;
+}
+
--- /dev/null
+#include "simgrid/s4u.hpp"
+
+XBT_LOG_NEW_DEFAULT_CATEGORY(main, "Messages specific for this s4u example");
+
+int main(int argc, char* argv[]) {
+ simgrid::s4u::Engine e(&argc, argv);
+ e.load_platform(argv[1]);
+
+ std::vector<simgrid::s4u::ActivityPtr> dag = simgrid::s4u::create_DAG_from_dot(argv[2]);
+
+ simgrid::s4u::Host* tremblay = e.host_by_name("Tremblay");
+ simgrid::s4u::Host* jupiter = e.host_by_name("Jupiter");
+ simgrid::s4u::Host* fafard = e.host_by_name("Fafard");
+
+ dynamic_cast<simgrid::s4u::Exec*>(dag[0].get())->set_host(fafard);
+ dynamic_cast<simgrid::s4u::Exec*>(dag[1].get())->set_host(tremblay);
+ dynamic_cast<simgrid::s4u::Exec*>(dag[2].get())->set_host(jupiter);
+ dynamic_cast<simgrid::s4u::Exec*>(dag[3].get())->set_host(jupiter);
+ dynamic_cast<simgrid::s4u::Exec*>(dag[8].get())->set_host(jupiter);
+
+ for (const auto& a : dag) {
+ if (auto* comm = dynamic_cast<simgrid::s4u::Comm*>(a.get())) {
+ auto pred = dynamic_cast<simgrid::s4u::Exec*>((*comm->get_dependencies().begin()).get());
+ auto succ = dynamic_cast<simgrid::s4u::Exec*>(comm->get_successors().front().get());
+ comm->set_source(pred->get_host())->set_destination(succ->get_host());
+ }
+ }
+
+ simgrid::s4u::Activity::on_completion_cb([](simgrid::s4u::Activity const& activity) {
+ XBT_INFO("Activity '%s' is complete (start time: %f, finish time: %f)", activity.get_cname(), activity.get_start_time(),
+ activity.get_finish_time());
+ });
+
+ e.run();
+ return 0;
+}
+
--- /dev/null
+#include "simgrid/s4u.hpp"
+
+XBT_LOG_NEW_DEFAULT_CATEGORY(main, "Messages specific for this s4u example");
+
+int main(int argc, char* argv[]) {
+ simgrid::s4u::Engine e(&argc, argv);
+ e.load_platform(argv[1]);
+
+ std::vector<simgrid::s4u::ActivityPtr> dag = simgrid::s4u::create_DAG_from_json(argv[2]);
+
+ simgrid::s4u::Activity::on_completion_cb([](simgrid::s4u::Activity const& activity) {
+ XBT_INFO("Activity '%s' is complete (start time: %f, finish time: %f)", activity.get_cname(), activity.get_start_time(),
+ activity.get_finish_time());
+ });
+
+ e.run();
+ return 0;
+}
+
--- /dev/null
+#include "simgrid/s4u.hpp"
+
+XBT_LOG_NEW_DEFAULT_CATEGORY(main, "Messages specific for this s4u example");
+
+int main(int argc, char* argv[]) {
+ simgrid::s4u::Engine e(&argc, argv);
+ e.load_platform(argv[1]);
+
+ std::vector<simgrid::s4u::ActivityPtr> dag = simgrid::s4u::create_DAG_from_DAX(argv[2]);
+
+ simgrid::s4u::Host* tremblay = e.host_by_name("Tremblay");
+ simgrid::s4u::Host* jupiter = e.host_by_name("Jupiter");
+ simgrid::s4u::Host* fafard = e.host_by_name("Fafard");
+
+ dynamic_cast<simgrid::s4u::Exec*>(dag[0].get())->set_host(fafard);
+ dynamic_cast<simgrid::s4u::Exec*>(dag[1].get())->set_host(tremblay);
+ dynamic_cast<simgrid::s4u::Exec*>(dag[2].get())->set_host(jupiter);
+ dynamic_cast<simgrid::s4u::Exec*>(dag[3].get())->set_host(jupiter);
+ dynamic_cast<simgrid::s4u::Exec*>(dag[8].get())->set_host(jupiter);
+
+ for (const auto& a : dag) {
+ if (auto* comm = dynamic_cast<simgrid::s4u::Comm*>(a.get())) {
+ auto pred = dynamic_cast<simgrid::s4u::Exec*>((*comm->get_dependencies().begin()).get());
+ auto succ = dynamic_cast<simgrid::s4u::Exec*>(comm->get_successors().front().get());
+ comm->set_source(pred->get_host())->set_destination(succ->get_host());
+ }
+ }
+
+ simgrid::s4u::Activity::on_completion_cb([](simgrid::s4u::Activity const& activity) {
+ XBT_INFO("Activity '%s' is complete (start time: %f, finish time: %f)", activity.get_cname(), activity.get_start_time(),
+ activity.get_finish_time());
+ });
+
+ e.run();
+ return 0;
+}
+
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+ <link_ctn id="145"/>
+ </route>
+ <route src="Bourassa" dst="Boivin">
+ <link_ctn id="47"/>
+ </route>
+ <route src="Jacquelin" dst="Boivin">
+ <link_ctn id="145"/>
+ <link_ctn id="59"/>
+ <link_ctn id="56"/>
+ <link_ctn id="54"/>
+ <link_ctn id="17"/>
+ <link_ctn id="16"/>
+ <link_ctn id="10"/>
+ <link_ctn id="11"/>
+ <link_ctn id="44"/>
+ <link_ctn id="47"/>
+ </route>
+ <route src="Jacquelin" dst="Fafard">
+ <link_ctn id="145"/>
+ <link_ctn id="59"/>
+ <link_ctn id="56"/>
+ <link_ctn id="54"/>
+ <link_ctn id="17"/>
+ <link_ctn id="16"/>
+ <link_ctn id="10"/>
+ <link_ctn id="6"/>
+ <link_ctn id="9"/>
+ <link_ctn id="79"/>
+ <link_ctn id="78"/>
+ </route>
+ <route src="Jacquelin" dst="Tremblay">
+ <link_ctn id="145"/>
+ <link_ctn id="59"/>
+ <link_ctn id="56"/>
+ <link_ctn id="54"/>
+ <link_ctn id="2"/>
+ <link_ctn id="3"/>
+ </route>
+ <route src="Boivin" dst="Tremblay">
+ <link_ctn id="47"/>
+ <link_ctn id="44"/>
+ <link_ctn id="11"/>
+ <link_ctn id="10"/>
+ <link_ctn id="16"/>
+ <link_ctn id="0"/>
+ <link_ctn id="3"/>
+ </route>
+ <route src="Boivin" dst="Fafard">
+ <link_ctn id="47"/>
+ <link_ctn id="44"/>
+ <link_ctn id="11"/>
+ <link_ctn id="6"/>
+ <link_ctn id="9"/>
+ <link_ctn id="79"/>
+ <link_ctn id="78"/>
+ <link_ctn id="80"/>
+ </route>
+ </zone>
+</platform>
friend kernel::activity::ActivityImpl;
friend std::vector<ActivityPtr> create_DAG_from_dot(const std::string& filename);
friend std::vector<ActivityPtr> create_DAG_from_DAX(const std::string& filename);
+ friend std::vector<ActivityPtr> create_DAG_from_json(const std::string& filename);
#endif
public:
std::vector<ActivityPtr> create_DAG_from_dot(const std::string& filename);
std::vector<ActivityPtr> create_DAG_from_DAX(const std::string& filename);
+std::vector<ActivityPtr> create_DAG_from_json(const std::string& filename);
#ifndef DOXYGEN /* Internal use only, no need to expose it */
template <class T>
#include "src/internal_config.h"
#include <algorithm>
#include <map>
+#include <fstream>
+#include <simgrid/s4u/Host.hpp>
#include <simgrid/s4u/Comm.hpp>
#include <simgrid/s4u/Engine.hpp>
#include <simgrid/s4u/Exec.hpp>
#include "dax_dtd.h"
#include "dax_dtd.c"
+#include <nlohmann/json.hpp>
+
#if HAVE_GRAPHVIZ
#include <graphviz/cgraph.h>
#endif
static std::map<std::string, Comm*, std::less<>> files;
static ExecPtr current_job;
+/** @brief loads a JSON file describing a DAG
+ *
+ * See https://github.com/wfcommons/wfformat for more details.
+ */
+std::vector<ActivityPtr> create_DAG_from_json(const std::string& filename)
+{
+ std::ifstream f(filename);
+ auto data = nlohmann::json::parse(f);
+ std::vector<ActivityPtr> dag = {};
+ std::map<std::string, std::vector<ActivityPtr>> successors = {};
+ std::map<ActivityPtr, Host*> comms_destinations = {};
+ ActivityPtr current;
+
+ for (auto const& task: data["workflow"]["tasks"]) {
+ if (task["type"] == "compute") {
+ current = Exec::init()->set_name(task["name"])->set_flops_amount(task["runtime"]);
+ if (task.contains("machine"))
+ dynamic_cast<Exec*>(current.get())->set_host(simgrid::s4u::Engine::get_instance()->host_by_name(task["machine"]));
+ }
+ else if (task["type"] == "transfer"){
+ current = Comm::sendto_init()->set_name(task["name"])->set_payload_size(task["bytesWritten"]);
+ if (task.contains("machine"))
+ comms_destinations[current] = simgrid::s4u::Engine::get_instance()->host_by_name(task["machine"]);
+ if (task["parents"].size() == 1) {
+ ActivityPtr parent_activity;
+ for (auto const& activity: dag) {
+ if (activity->get_name() == task["parents"][0]) {
+ parent_activity = activity;
+ break;
+ }
+ }
+ if (dynamic_cast<Exec*>(parent_activity.get()) != nullptr)
+ dynamic_cast<Comm*>(current.get())->set_source(dynamic_cast<Exec*>(parent_activity.get())->get_host());
+ else if (dynamic_cast<Comm*>(parent_activity.get()) != nullptr)
+ dynamic_cast<Comm*>(current.get())->set_source(dynamic_cast<Comm*>(parent_activity.get())->get_destination());
+ }
+ }
+ else
+ XBT_DEBUG("Task type \"%s\" not supported.", task["type"]);
+
+ dag.push_back(current);
+ for (auto const& parent: task["parents"]) {
+ auto it = successors.find(parent);
+ if (it == successors.end())
+ successors[parent] = {};
+ successors[parent].push_back(current);
+ }
+ }
+ // Assign successors
+ for (auto const& [parent, successors_list] : successors)
+ for (auto const& activity: dag)
+ if (activity->get_name() == parent) {
+ for (auto const& successor: successors_list)
+ activity->add_successor(successor);
+ break;
+ }
+ // Assign destinations of Comms (if done before successors are assigned there is a bug)
+ for (auto const& [comm, destination]: comms_destinations)
+ dynamic_cast<Comm*>(comm.get())->set_destination(destination);
+
+ // Start only Activities with dependencies solved
+ for (auto const& activity: dag) {
+ if (dynamic_cast<Exec*>(activity.get()) != nullptr and activity->dependencies_solved())
+ activity->start();
+ }
+ return dag;
+}
+
/** @brief loads a DAX file describing a DAG
*
* See https://confluence.pegasus.isi.edu/display/pegasus/WorkflowGenerator for more details.
