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Answered
I Dont Exactly Know How To Ask For Help On This... Nor Have A Reproducible Minimal Example... I Downgraded Back To 1.15.1 From 1.16.2 And Have The Same Issue There. I Have A Pipeline That'S Repeatedly Failing To Complete. It Correctly Marks Things As Cach

i dont exactly know how to ask for help on this... nor have a reproducible minimal example...
I downgraded back to 1.15.1 from 1.16.2 and have the same issue there.
I have a pipeline that's repeatedly failing to complete. it correctly marks things as cached, and then just doesnt execute the last step. The task stays "Running" forever, but disappears - the worker just has a process that dies. CPU/RAM aren't running out or anything like that at all. Prior runs of this pipeline worked just fine (less cached then too).

Has anyone seen this kind of "disappearing / zombie task" state before? It's very perplexing to me.

  
  
Posted one year ago
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Answers 43


enqueuing. pipe.start("default") but I think it's picking up on my local clearml install instead of what I told it to use.

my tasks have this in them... what's the equivalent for pipeline controllers?
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Posted one year ago

trying to run the experiment that kept failing right now, watching logs (they go by fast)... will try to spot anything anamolous

  
  
Posted one year ago

clearml-server-1.15.1, clearml-1.16.2
  
  
Posted one year ago

image

  
  
Posted one year ago

default queue is served with (containerized + custom entrypoint) venv workers (agent services just wasn't working great for me, gave up)

  
  
Posted one year ago

but maybe here's a clue. after hanging like that for a while... it seems like the agent restarts (the container it runs in does not)
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Posted one year ago

I think i've narrowed this down to the ssh connection approach.

regarding the container that runs the pipeline:

  • when I made it stop using autossh tunnels and instead put it on the same machine as the clearml server + used docker network host mode, suddenly the problematic pipeline started completing.
    it's just so odd that the pipeline controller task is the only one with an issue. the modeling / data-creation tasks really all seem to complete consistently just fine.

so yeah, best guess now is that its unrelated to clearml verison but rather to the connectivity of the pipeline controller task to the api server.

when I run this pipeline controller locally (also using the same ssh tunnel approach for comms), the pipeline completes just fine. so it's something specific about how its working inside the container vs on my machine, it seems.

  
  
Posted one year ago

do you have any STATUS REASON under the INFO section of the controller task?

  
  
Posted one year ago

thank you

  
  
Posted one year ago

it's pretty reliably happening but the logs are just not informative. just stops midway
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Posted one year ago

that's the final screenshot. it just shows a bunch of normal "launching ..." steps, and then stops all the sudden.

  
  
Posted one year ago

damn. I can't believe it. It disappeared again despite having 1.15.1 be the task's clearml version.
I'm going to try running the pipeline locally.

  
  
Posted one year ago

I really can't provide a script that matches exactly (though I do plan to publish something like this soon enough), but here's one that's quite close / similar in style:
None where I tried function-steps out instead, but it's a similar architecture for the pipeline (the point of the example was to show how to do a dynamic pipeline)

  
  
Posted one year ago

I have tried other queues, they're all running the same container.
so far the only thing reliable is pipe.start_locally()

  
  
Posted one year ago

can you share the logs of the controller?

  
  
Posted one year ago

do you have the agent logs that is supposed to run your pipeline? Maybe there is a clue there. I would also suggest to try enqueuing the pipeline to some other queue, maybe even run the agent on your on machine if you do not already and see what happens

  
  
Posted one year ago

let me downgrade my install of clearml and try again.

  
  
Posted one year ago

(the "magic" of the env detection is nice but man... it has its surprises)

  
  
Posted one year ago

would it be on the pipeline task itself then, since that's what's disappearing? that likely the case

  
  
Posted one year ago

nothing came up in the logs. all 200's

  
  
Posted one year ago

odd bc I thought I was controlling this... maybe I'm wrong and the env is mis-set.
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image

  
  
Posted one year ago

None here's how I'm establishing worker-server (and client-server) comms fwiw

  
  
Posted one year ago

damn, it just happened again... "queued" steps in the viz are actually complete. the pipeline task disappeared again without completion, logs mid-stream.

  
  
Posted one year ago

clearml_agent v1.8.1
  
  
Posted one year ago

did you take a look at my connect.sh script? I dont think it's a problem since only the controller task is the problem.

Is there some sort of culling procedure that kills tasks by any chance? the lack of logs makes me think it's something like that.

I can also try different agent versions.

  
  
Posted one year ago

would it be on the pipeline task itself then, since that's what's disappearing?
I will do some experiment comparisons and see if there are package diffs. thanks for the tip.

  
  
Posted one year ago

Hi @<1689446563463565312:profile|SmallTurkey79> , when this happens, do you see anything in the API server logs? How is the agent running, on top of K8s or bare metal? Docker mode or venv?

  
  
Posted one year ago

I will ask internally about this

  
  
Posted one year ago

yeah locally it did run. I then ran another via UI spawned from the successful one, it showed cached steps and then refused to run the bottom one, disappearing again. No status message, no status reason. (not running... actually dead)
image

  
  
Posted one year ago

the workers connect to the clearml server via ssh-tunnels, so they all talk to "localhost" despite being deployed in different places. each task creates artifacts and metrics that are used downstream

  
  
Posted one year ago
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