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@@ -11,6 +11,21 @@
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StarPU can use Simgrid in order to simulate execution on an arbitrary
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platform.
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+\section Preparing your application for simulation.
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+
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+There are a few technical details which need to be handled for an application to
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+be simulated through Simgrid.
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+
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+If the application uses <c>gettimeofday</c> to make its
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+performance measurements, the real time will be used, which will be bogus. To
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+get the simulated time, it has to use starpu_timing_now() which returns the
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+virtual timestamp in ms.
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+
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+For some technical reason, the application's .c file which contains main() has
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+to be recompiled with starpu.h, which in the simgrid case will #define main()
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+into starpu_main(), and it is libstarpu which will provide the real main() and
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+call the application's main().
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+
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\section Calibration Calibration
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The idea is to first compile StarPU normally, and run the application,
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@@ -75,11 +90,6 @@ $ ./example --cfg=contexts/stack_size:8192
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TEST FAILED !!!
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\endverbatim
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-Note: of course, if the application uses <c>gettimeofday</c> to make its
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-performance measurements, the real time will be used, which will be bogus. To
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-get the simulated time, it has to use starpu_timing_now() which returns the
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-virtual timestamp in ms.
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-
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\section SimulationOnAnotherMachine Simulation On Another Machine
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The simgrid support even permits to perform simulations on another machine, your
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