[CP2K-user] [CP2K:22026] Re: Issue with EPS_DEFAULT Sensitivity: Why Does 1.0E-12 Cause CPASSERT Failure?

yis...@163.com yisichi at 163.com
Tue Jan 6 13:59:42 UTC 2026


I am using a supercomputer provided by a commercial supercomputing center. 
The CP2K software I am using was compiled by the center's staff. Is there 
anything I can help with?

在2026年1月5日星期一 UTC+8 17:56:03<Frederick Stein> 写道:

> Hi,
> This could be a bug. Did you compile CP2K yourself? If yes, with which 
> compiler?
> Best,
> Frederick
>
> yis... at 163.com schrieb am Dienstag, 30. Dezember 2025 um 17:43:29 UTC+1:
>
>> Dear CP2K developers,
>>
>> I would like to report a potential issue regarding the keyword 
>> EPS_DEFAULT. During my tests, I found that its value affects the 
>> calculation in the following way:
>>
>>    - 
>>    
>>    With EPS_DEFAULT = 1.0E-12, the program fails with a “CPASSERT 
>>    failed” error.
>>    - 
>>    
>>    With EPS_DEFAULT = 1.0E-11 or 1.0E-13, the calculation proceeds 
>>    normally into the iteration process.
>>    
>> I have attached the input and output files for each test case. The naming 
>> convention is as follows:
>>
>>    - 
>>    
>>    1.0E-12_*: corresponds to EPS_DEFAULT = 1.0E-12
>>    - 
>>    
>>    1.0E-11_*: corresponds to EPS_DEFAULT = 1.0E-11
>>    - 
>>    
>>    1.0E-13_*: corresponds to EPS_DEFAULT = 1.0E-13
>>    
>> Thank you for your attention and for all your work on CP2K. I look 
>> forward to your feedback.
>>
>

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