llnl / llnl/RAJAPerf

Ensure consistent use of block size vs blockIdx.x in GPU kernels

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Description

Some kernels have been observed to use blockIdx.x while others use the templated blocksize. We should do a pass to ensure consistency and consider different "tuning" versions if we want to consider different options.

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Research direction

Inspect the GPU kernels to identify where blockIdx.x and the templated blocksize are used inconsistently. Determine the intended consistent approach, including whether separate tuning variants are needed, then validate that the affected kernels retain correct behavior and performance.

Written by the indexing model from the issue text.

Assessment

Tech stack
cpp
Domain
performance
Issue type
Refactor
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
35/100

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