Update sneut5 to use partial arrays#1808
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zingale merged 2 commits intoAMReX-Astro:developmentfrom Jun 23, 2025
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This decreases the runtime on CPU from 1.81s to 1.45s (-20%), compared to PR AMReX-Astro#1803. It's still 25% slower than the original hand-written derivatives, which I believe is mostly due to the creation of extra temporary GradArrays in the autodiff code.
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This decreases the runtime on CPU from 1.81s to 1.45s (-20%), compared to current development (f3ca377). It's still 25% slower than the original hand-written derivatives, which I believe is mostly due to the creation of extra temporary GradArrays in the autodiff code.