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The deviation between finite difference and analysis is large for LCAO stress
Describe the Testing Issue
I have done the finite difference (FD) test of stress for NiMnTi with LCAO. The step of cell deform is 0.0001.
The deviation between FD and analysis is about 2 kbar, while in PW, the deviation is only about 0.15 kbar.
bohrium app job: https://bohrium.dp.tech/apps/abacustest/job?type=jobs&jobId=22571
PW:
Additional Context
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Task list for Issue attackers (only for developers)
- [ ] Understand the testing issue described by the developer.
- [ ] Review the specific test case, expected and actual results, and any error messages.
- [ ] Identify the root cause of the test failure or issue.
- [ ] If a possible solution is suggested, evaluate its feasibility and effectiveness.
- [ ] Implement a fix for the test failure or issue, or create a new test case if needed.
- [ ] Verify that the fix resolves the testing issue and the test case passes.
- [ ] Review and update any relevant documentation, such as test plans or user guides.
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