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PopIII sim needs diode boundary condition #732

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BenWibking opened this issue Sep 2, 2024 · 0 comments · May be fixed by #739
Open

PopIII sim needs diode boundary condition #732

BenWibking opened this issue Sep 2, 2024 · 0 comments · May be fixed by #739
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bug Something isn't working

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@BenWibking
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Describe the bug
Mass can flow into the box, which can cause unphysical behavior, including preventing the collapse of the cloud.

To Reproduce
Steps to reproduce the behavior:

  1. Compile PopIII
  2. Run it with a 128^3 grid on Stampede3
  3. See cloud leave the box over ~30,000 timesteps

Additional context
This may be exacerbated by a directional bias present when FMA instructions are emitted by the compiler.

cc @psharda
@BenWibking BenWibking added the bug Something isn't working label Sep 2, 2024
This was referenced Sep 6, 2024
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@BenWibking