ELPH WF COMM OPT: Difference between revisions
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The available options are: | The available options are: | ||
* 0 — Use two-sided MPI communication (default) | * '''0''' — Use two-sided MPI communication (default) | ||
* 1 — Use one-sided MPI communication | * '''1''' — Use one-sided MPI communication | ||
Some MPI libraries have shown instability or performance issues when using one-sided communication. | Some MPI libraries have shown instability or performance issues when using one-sided communication. | ||
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* {{TAG|ELPH_WF_CACHE_PREFILL}} | * {{TAG|ELPH_WF_CACHE_PREFILL}} | ||
* {{TAG|ELPH_WF_REDISTRIBUTE}} | * {{TAG|ELPH_WF_REDISTRIBUTE}} | ||
[[Category:INCAR tag]][[Category:Electron-phonon_interactions]] | |||
Revision as of 14:33, 22 October 2025
ELPH_WF_COMM_OPT = [integer]
Default: ELPH_WF_COMM_OPT = 0
Description: Selects the MPI communication pattern used to exchange orbitals between different MPI ranks.
| Mind: Available as of VASP 6.5.0 |
The available options are:
- 0 — Use two-sided MPI communication (default)
- 1 — Use one-sided MPI communication
Some MPI libraries have shown instability or performance issues when using one-sided communication.
If unexpected behavior occurs, it is recommended to keep the default setting ELPH_WF_COMM_OPT = 0.