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Remove unused kernel and skip zero forces in apply_ft #629

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Merged
merged 1 commit into from
Aug 19, 2025

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erikfrey
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Introduces a significant speedup on some internal models that have large nbody.

Even for our current benchmark scenes there's a very modest speedup in xfrc_accumulate:

  • Apollo before: 7.68
  • Apollo after: 3.21
  • Aloha pot before: 3.81
  • Aloha pot after: 1.97

@erikfrey erikfrey merged commit 420aa02 into google-deepmind:main Aug 19, 2025
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2 participants