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Added note about resource usage during elaboration to docs (#517)

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On computers with limited resources (like main memory) the elaboration will fail with the message 'make: *** [firrtl_temp] Error 137'. Since no further explaination of the error is given, its meaning should be mentioned in the docs.
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KlepD-SAL
2020-04-20 20:47:59 +02:00
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docs/Simulation/Software-RTL-Simulation.rst
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@@ -49,6 +49,8 @@ Simulating The Default Example
To compile the example design, run ``make`` in the selected verilator or VCS directory. To compile the example design, run ``make`` in the selected verilator or VCS directory.
This will elaborate the ``RocketConfig`` in the example project. This will elaborate the ``RocketConfig`` in the example project.
.. Note:: The elaboration of ``RocketConfig`` requires about 6.5 GB of main memory. Otherwise the process will fail with ``make: *** [firrtl_temp] Error 137`` which is most likely related to limited resources. Other configurations might require even more main memory.
An executable called ``simulator-chipyard-RocketConfig`` will be produced. An executable called ``simulator-chipyard-RocketConfig`` will be produced.
This executable is a simulator that has been compiled based on the design that was built. This executable is a simulator that has been compiled based on the design that was built.
You can then use this executable to run any compatible RV64 code. You can then use this executable to run any compatible RV64 code.