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AMREX_GPU_MAX_THREADS: 256 -> 128 for CUDA #4417

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@WeiqunZhang WeiqunZhang commented Apr 13, 2025

Except for reduction, change the default number of threads per block from 256 to 128 for CUDA.

@WeiqunZhang WeiqunZhang changed the title AMREX_GPU_MAX_THREADS: 256 -> 128 AMREX_GPU_MAX_THREADS: 256 -> 128 for CUDA Apr 14, 2025
@WeiqunZhang WeiqunZhang force-pushed the nthreads_128 branch 2 times, most recently from 5b0a0ca to ff0cb99 Compare April 15, 2025 05:04
WeiqunZhang added a commit to WeiqunZhang/amrex that referenced this pull request Apr 15, 2025
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