Mantaflow parallelizations
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Authored by Erik Abrahamsson (erik85) on Jul 22 2021, 9:23 PM.

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Summary

This will parallelize parts of two functions in Mantaflow.
On my machine the attached test file takes 17.1s to bake with the patch applied compared to 26.3s before the patch (1.54x speedup).
Cpu-time before was 178s and after 164s.

After

Before:

mantaflow-test.blend799 KBDownload

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Repository: rB Blender

Event Timeline

Erik Abrahamsson (erik85) requested review of this revision.Jul 22 2021, 9:23 PM

Erik Abrahamsson (erik85) created this revision.

Erik Abrahamsson (erik85) edited the summary of this revision. (Show Details)

Fixed a bug where it didn't skip cubeIdx properly.

Ray Molenkamp (LazyDodo) edited the summary of this revision. (Show Details)Jul 22 2021, 9:56 PM

Erik Abrahamsson (erik85) edited the summary of this revision. (Show Details)Jul 22 2021, 10:02 PM

YAFU (YAFU) awarded a token.Jul 22 2021, 10:04 PM

Daniel Ulrich (dulrich) awarded a token.Jul 22 2021, 10:14 PM

silex (silex) awarded a token.Jul 22 2021, 11:03 PM

Removed unnecessary clear of cubeIndices

kursad k (kursadk) awarded a token.Jul 23 2021, 8:00 PM

Found a way to make a huge improvement by precalculating pStart and pEnd to avoid doing it over and over again. This gave around 20% improvement.
Freeing the Grids in parallel.

Erik Abrahamsson (erik85) edited the summary of this revision. (Show Details)Jul 24 2021, 6:11 PM

Erik Abrahamsson (erik85) edited the summary of this revision. (Show Details)Jul 24 2021, 6:14 PM

Erik Abrahamsson (erik85) edited the summary of this revision. (Show Details)Jul 24 2021, 9:46 PM

Silas Opel (Schamph) awarded a token.Jul 24 2021, 10:54 PM

Lloyd (digim0nk) awarded a token.Jul 24 2021, 11:51 PM

Alaska (Alaska) awarded a token.Jul 24 2021, 11:57 PM

Gilberto Rodrigues (gilberto_rodrigues) awarded a token.Jul 29 2021, 11:47 PM

flavien giroud (gritche) awarded a token.Jul 30 2021, 8:55 AM

Jagannadhan Ravi (easythrees) awarded a token.Aug 2 2021, 9:07 PM

Jagannadhan Ravi (easythrees) added a subscriber: Jagannadhan Ravi (easythrees).

Thomas Dinges (dingto) awarded a token.Aug 19 2021, 10:14 PM

Sebastián Barschkis (sebbas) mentioned this in rB5a02d0da7a88: Fluid: Parallelizations for Mantaflow functions (D12002).Sep 6 2021, 5:31 PM

Konstantins Visnevskis (kivig) awarded a token.Sep 14 2021, 12:07 AM

Raimund Klink (Raimund58) awarded a token.Sep 21 2021, 10:20 AM

Raimund Klink (Raimund58) added a subscriber: Raimund Klink (Raimund58).Sep 22 2021, 9:59 AM

Committed on rB5a02d0da7a88e31422b61d6e4e69c9f464290241

Hm apparently only parts of the patch was committed. Not sure what are @Sebastián Barschkis (sebbas) plans on that regard (not know how to re-open the patch either :/

Erik Abrahamsson (erik85) reclaimed this revision.Sep 22 2021, 10:25 AM

Erik Abrahamsson (erik85) abandoned this revision.Jul 14 2022, 1:05 PM