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Inconsistent SCF energy with different kpar settings and number of MPI processes/OpenMP threads

Open ahxbcn opened this issue 9 months ago • 0 comments

Describe the bug

During the process of testing kpar to accelerate calculation, I found that different kpar can result in different SCF energy.

kpar MPI processes OMP threads final etot
1 8 1 -21597.451588
2 8 1 -21597.451588
3 8 1 -21054.469357
4 8 1 -21597.451588
5 8 1 -21255.118896
6 8 1 -21211.16164
4 4 2 -21597.451588
4 6 1 -20933.863586

The original input and output files are attached below.

FePO4.tar.gz

Expected behavior

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To Reproduce

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Environment

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Additional Context

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ahxbcn avatar Apr 10 '25 02:04 ahxbcn