Running rocPRIM unit tests over multiple GPUs

The CTest resource allocation feature 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.

Note

CMake 3.18 or later is required.

When rocPRIM is built with cmake -DBUILD_TEST=ON, the generate_resource_spec binary file is created.

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:

./generate_resource_spec resources.json

To run tests in parallel, pass the resource specification file and the maximum number of tests to run in parallel to ctest:

ctest --resource-spec-file PATH_TO_RESOURCE_SPECIFICATION_FILE --parallel MAXIMUM_NUMBER_OF_PARALLEL_TESTS

To restrict tests to a single family of GPUs, use the AMDGPU_TEST_TARGETS option when building rocPRIM.