Kokkos: CUDA: Race condition in parallel_scan

Created on 27 Jan 2020  路  3Comments  路  Source: kokkos/kokkos

There was a bug in the parallel_scan implementation where the correct inter-block fence (__threadfence()) wasn't called. This would manifest as a wrong result of the scan.

InDevelop bug
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@stanmoore1 found the reproducer which made it possible to find this thing ...

picture crtrott on 28 Jan 2020
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PRs #2666 and #2668

ndellingwood picture ndellingwood on 27 Jan 2020

@stanmoore1 found the reproducer which made it possible to find this thing ...

crtrott picture crtrott on 28 Jan 2020
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Closing this issue as this is now in master

ndellingwood picture ndellingwood on 4 Feb 2020
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