Bug #12026
closed
[crunchstat-summary] gives invalid min_cores recommendation
Added by Tom Morris almost 7 years ago.
Updated almost 5 years ago.
Release relationship:
Auto
Description
This recommendation doesn't make sense from a couple of points of view:
### Summary for cwl-runner (su92l-8i9sb-ll9w11siojvlro6)
category metric task_max task_max_rate job_total
cpu cpus 1 - -
# Max CPU time spent by a single task: 1045.15s
# Max CPU usage in a single interval: 99.80%
# Overall CPU usage: 18.81%
#!! cwl-runner su92l-8i9sb-ll9w11siojvlro6 max CPU usage was 100% -- try runtime_constraints "min_cores_per_node":1
It shouldn't recommend a "change" to the same value as is current and it shouldn't recommend a change for max cpu < 100%
- Subject changed from crunchstat-summary gives invalid min_cores recommendation to [crunchstat-summary] gives invalid min_cores recommendation
- Description updated (diff)
I think the problem here was triggered by the fact that there was no cores run-time constraint specified. The job got scheduled on a single core machine (which seems like the right default), but crunchstat-summary contains this code:
used_cores = max(1, int(math.ceil(cpu_max_rate)))
asked_cores = self.existing_constraints.get(constraint_key)
if asked_cores is None or used_cores < asked_cores:
yield (
'#!! {} max CPU usage was {}% -- '
'try runtime_constraints "{}":{}'
I think perhaps asked_cores should have a default value of 1 if it isn't specified.
- Target version changed from Arvados Future Sprints to 2019-03-27 Sprint
- Assigned To set to Tom Morris
- Status changed from New to In Progress
- Status changed from In Progress to Resolved
- % Done changed from 0 to 100
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Updated by Tom Morris