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exasmr / openmc

OpenMC Monte Carlo Code
https://docs.openmc.org
MIT License
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Material Serialization #9

Closed jtramm closed 2 years ago

jtramm commented 2 years ago

This PR serializes materials into global arrays. The global arrays are implemented in the form of a new class, vector2d<T>. See the writeup of PR #8 for more info.

jtramm commented 2 years ago

Performance delta on the A100 for this PR is as follows:

  Old This PR
HM Large Inactive 356 361
SMR Active 161 160

However, it is notable that the differences can be much more dramatic on other GPU architectures (and perhaps even between compilers for A100 down the line) due to how various OpenMP runtimes handle the mapping of millions of pointers.