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chaos / powerman

cluster power control
GNU General Public License v2.0
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powerman: increase maximum line length #194

Closed chu11 closed 4 months ago

chu11 commented 4 months ago

Problem: On very larger clusters command line operations of a large number of nodes (e.g. node[1,3,5,...,4997,4999]) can exceed internal buffers, leading to errors.

Increase the internal maximum line length from 8K to 128K, which should handle any HPC cluster in existence today and larger ones in the future.

Fixes #193

side note, for the test I just created the giant input and put it in a file in t/data b/c I was not confident that hostlist generating tools that could generate it would exist on many environments. (i.e. reproducer I was shown used cluset which I don't think is that common. Neither would flux hostlist, etc.)

chu11 commented 4 months ago

re-pushed, generate the test case on the fly vs having it in a big file