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Default PE layouts for some of the new SE/FV3 grids are problematic #1105

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ekluzek opened this issue Aug 11, 2020 · 2 comments · Fixed by #1111
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Default PE layouts for some of the new SE/FV3 grids are problematic #1105

ekluzek opened this issue Aug 11, 2020 · 2 comments · Fixed by #1111
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@ekluzek
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priority: high High priority to fix/merge soon, e.g., because it is a problem in important configurations tag: bug - critical big problems in important configurations type: enhancement new capability or improved behavior of existing capability
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cesm2.2.0

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@ekluzek
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ekluzek commented Aug 11, 2020

All of the new SE grids use default PE layouts, which is problematic for the higher resolution ones (see issue #1098). We need usable setups for cheyenne and reasonable ones for "any" machine (using node counts).

For the FV3 grids, there are PE layouts, but they are particular for cheyenne, and they should be labeled as such. And there should be something reasonable that happens for "any" machine based on node counts.
@ekluzek ekluzek added type: enhancement new capability or improved behavior of existing capability tag: bug - critical big problems in important configurations priority: high High priority to fix/merge soon, e.g., because it is a problem in important configurations tag: next this should get some attention in the next week or two labels Aug 11, 2020
@ekluzek ekluzek added this to the cesm2.2.0 milestone Aug 11, 2020
@ekluzek ekluzek self-assigned this Aug 11, 2020
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ekluzek commented Aug 11, 2020

FV3 grids that are set are for: C96, C192, and C384. The other's (C24, C48) use default layouts, which looks like it would be one node.

ne0np4CONUS, ne0np4.ARCTICGRIS.ne30x8, and ne0np4.ARCTIC.ne30x4 are each setup for using 8 nodes which is too small. The pattern matching could be made to be more general in case, more iterations of these grids are created.

The new "ne30" and "ne120 "pg" (Physics Grid) grids will match the "ne30" and "ne120" PE layouts which are setup for generic machines, so that might be OK.

This was referenced Aug 11, 2020
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@billsacks billsacks removed the tag: next this should get some attention in the next week or two label Aug 13, 2020
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ekluzek commented Aug 14, 2020

CONUS grid has 174,098 points, ARCTIC has 117,398, and ARCTICGRIS has 152,390, C384 has 884,736, and f09 has 55,296 in comparison.

@ekluzek ekluzek mentioned this issue Aug 18, 2020
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priority: high High priority to fix/merge soon, e.g., because it is a problem in important configurations tag: bug - critical big problems in important configurations type: enhancement new capability or improved behavior of existing capability
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cesm2.2.0
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Adjust FV3/SE PE layouts ekluzek/CTSM
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@billsacks @ekluzek