amrex::Initialize: Add optional argument of device ID #4741
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In most cases, you should let AMReX select a device when multiple GPU devices are visible. However, if another library has already been initialized and assigned processes to specific devices, you may need AMReX to use a particular GPU. In that case, you can pass the desired device ID to `amrex::Initialize`.
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atmyers
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atmyers
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Co-authored-by: Andrew Myers <[email protected]>
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In most cases, you should let AMReX select a device when multiple GPU devices are visible. However, if another library has already been initialized and assigned processes to specific devices, you may need AMReX to use a particular GPU. In that case, you can pass the desired device ID to
amrex::Initialize.