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Make htex scale_in pick longest idle blocks #3135

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merged 3 commits into from
Mar 6, 2024
Merged

Make htex scale_in pick longest idle blocks #3135

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b34ef41
Make htex scale_in pick longest idle blocks
benclifford Jan 31, 2024
9529214
Merge branch 'master' into benc-ghent-scaling-orders
benclifford Mar 6, 2024
6c08ad4
Merge branch 'master' into benc-ghent-scaling-orders
benclifford Mar 6, 2024
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7 changes: 6 additions & 1 deletion parsl/executors/high_throughput/executor.py
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Original file line number Diff line number Diff line change
Expand Up @@ -739,7 +739,12 @@ class BlockInfo:
block_info[b_id].tasks += manager['tasks']
block_info[b_id].idle = min(block_info[b_id].idle, manager['idle_duration'])

sorted_blocks = sorted(block_info.items(), key=lambda item: (item[1].idle, item[1].tasks))
# The scaling policy is that longest idle blocks should be scaled down
# in preference to least idle (most recently used) blocks.
# Other policies could be implemented here.

sorted_blocks = sorted(block_info.items(), key=lambda item: (-item[1].idle, item[1].tasks))

logger.debug(f"Scale in selecting from {len(sorted_blocks)} blocks")
if max_idletime is None:
block_ids_to_kill = [x[0] for x in sorted_blocks[:blocks]]
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