Opened 8 years ago
Last modified 7 years ago
#1721 closed Task
Running eORCA1 at NEMO vn3.6 on a single PE — at Initial Version
Reported by: | frrh | Owned by: | NEMO team |
---|---|---|---|
Priority: | low | Milestone: | Unscheduled |
Component: | OCE | Version: | v3.6 |
Severity: | Keywords: | ||
Cc: |
Description
Context
Here we aim to investigate whether it is possible to run eORCA1 in a 1x1 PE configuration
on the Met Office Cray XC40.
The ability to do that with many component models has been lost as resolutions get higher and higher and machines revert to MPP-style distributed chips and memory. However the Cray XC40 features nodes of 32 or 36 PEs with local memory available to that node.
We have found that it is possible to run eORCA1 (NEMO-CICE) within a single node and conclude that in principle it should be possible to run on a single PE provided that PE has access to the node's full resources.
This is a potentially very useful thing to be able to do for debugging purposes.
Implementation
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