BUG with ultra-large system

Queries about input and output files, running specific calculations, etc.


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Jianguo Si
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BUG with ultra-large system

#1 Post by Jianguo Si » Sun Sep 20, 2026 12:52 am

Dear developers,

When performing a VASP calculation on a relatively large system (approximately 200 atoms and 1,500 electrons), the convergence calculations were completed successfully, and the WAVECAR and CHGCAR files were also written successfully. However, the calculation automatically terminates with an error when writing the PROCAR file. I checked the log, which is shown below. Could you please help me understand what happened? It seems like it might be a bug? How to fix it?

-----------------------------------------------------------------------------
| _ ____ _ _ _____ _ |
| | | | _ \ | | | | / ____| | | |
| | | | |_) | | | | | | | __ | | |
| |_| | _ < | | | | | | |_ | |_| |
| _ | |_) | | |__| | | |__| | _ |
| (_) |____/ \____/ \_____| (_) |
| |
| internal error in: mpi.F at line: 1825 |
| |
| M_sumb_d: invalid vector size n -1350075136 |
| |
| If you are not a developer, you should not encounter this problem. |
| Please submit a bug report. |
| |
-----------------------------------------------------------------------------

Best Regards,
Jianguo Si


Jianguo Si
Newbie
Newbie
Posts: 10
Joined: Mon Dec 23, 2024 2:44 pm

Re: BUG with ultra-large system

#2 Post by Jianguo Si » Sun Sep 20, 2026 12:54 am

See the attchment.

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Jianguo Si
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Newbie
Posts: 10
Joined: Mon Dec 23, 2024 2:44 pm

Re: BUG with ultra-large system

#3 Post by Jianguo Si » Sun Sep 20, 2026 1:18 am

Files related to the calculations are also sent as attachments

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