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GPU linear solver thread overlapping #141

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cguzman95 opened this issue Apr 12, 2020 · 1 comment
Open

GPU linear solver thread overlapping #141

cguzman95 opened this issue Apr 12, 2020 · 1 comment
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GPU chemistry solver

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Issue to fix the "bug" of thread overlapping that produces different results in the GPU linear solver when executing two instances of the same function with same output. More details of the problem defined in #139
@cguzman95 cguzman95 added the bug label Apr 12, 2020
@cguzman95 cguzman95 added this to the GPU chemistry solver milestone Apr 12, 2020
@cguzman95 cguzman95 self-assigned this Apr 12, 2020
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Seems this bug is produced cause the "atomicadd" operation in the multiplication of the RHS with the Jacobian values. This atomicadd can be avoided changuin the type of the Jac structure from CSC to CSR (or even a more efficient structure). Working with Guillermo to find the best structure.

@cguzman95 cguzman95 mentioned this issue Apr 16, 2020
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