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30 lines
1.4 KiB
ReStructuredText
30 lines
1.4 KiB
ReStructuredText
.. meta::
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:description: Run rocPRIM unit tests on multiple GPUs
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:keywords: ROCm libraries, rocPRIM, ROCm, CTest, testing
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*********************************************
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Running rocPRIM unit tests over multiple GPUs
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*********************************************
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The `CTest resource allocation feature <https://cmake.org/cmake/help/latest/manual/ctest.1.html#resource-allocation>`__ can be used to distribute tests across multiple GPUs, accelerating testing when multiple GPUs of the same family are in a system. It can also be used to test multiple product families without having to set ``HIP_VISIBLE_DEVICES``.
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.. note::
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CMake 3.18 or later is required.
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When rocPRIM is built with :doc:`cmake -DBUILD_TEST=ON <../install/build>`, the ``generate_resource_spec`` binary file is created.
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Use ``generate_resource_spec`` to create a resource specification file. The resource specification file is a JSON file that describes the GPU resources available on your system. For example:
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.. code:: shell
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./generate_resource_spec resources.json
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To run tests in parallel, pass the resource specification file and the maximum number of tests to run in parallel to ``ctest``:
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.. code:: shell
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ctest --resource-spec-file PATH_TO_RESOURCE_SPECIFICATION_FILE --parallel MAXIMUM_NUMBER_OF_PARALLEL_TESTS
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To restrict tests to a single family of GPUs, use the ``AMDGPU_TEST_TARGETS`` option when :doc:`building rocPRIM <../install/build>`. |