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Hi Again, I Tried To Upgrade Trains Package To 15.1 From 13.1 That I Was Using For A While.. After The Upgrade My Code Stuck When Trying To Use "Pool" (From Multiprocessing Import Pool) The Code Snip:

Hi again,
I tried to upgrade Trains package to 15.1 from 13.1 that I was using for a while..
After the upgrade my code stuck when trying to use "Pool" (from multiprocessing import Pool)
The code snip:
with Pool(processes=12) as pool: args = [(k, cocoDt, cocoGt, catId, iou_type, [maxDets[-1]]) for k, catId in enumerate(catIds)] analyze_results = pool.starmap(analyze_individual_category, args)It looks like some process is not ended.
It start happened only in the new version.
If I am going back to 13.1 it is working.

Dose version 15.1 changes something that can cause it?

  
  
Posted 4 years ago
Votes Newest

Answers 17


CooperativeFox72 we are aware of Pool throwing exception that causes things to hang. Fix will be deployed in 0.16 (due to be released tomorrow).
Do you have a code to reproduce it, so I can verify the fix solves the issue?

  
  
Posted 4 years ago

Thanks AgitatedDove14 ,
I need to check with my boss that it is OK to share more code, will let you know..

But I will give 0.16 a try when it will release.
🙏

  
  
Posted 4 years ago

CooperativeFox72 you can you start by checking the latest RC :)
pip install trains==0.15.2rc0

  
  
Posted 4 years ago

AgitatedDove14 Thanks, I am trying it..

  
  
Posted 4 years ago

The hang is still happening in trains==0.15.2rc0

  
  
Posted 4 years ago

😞 CooperativeFox72 please see if you can send a code snippet to reproduce the issue. I'd be happy to solve the it ...

  
  
Posted 4 years ago

I am trying to reproduce it with little example

  
  
Posted 4 years ago

Thanks!

  
  
Posted 4 years ago

I reproduced the stuck with this code..
But for now only with my env , when I tried to create new env only with the packages that this code needed it wont stuck.
So maybe the problem is conflict between packages?

  
  
Posted 4 years ago

Thanks CooperativeFox72 ! I'll test and keep you posted 🙂

  
  
Posted 4 years ago

Hi CooperativeFox72 trains 0.16 is out, did it solve this issue? (btw: you can upgrade trains to 0.16 without upgrading the trains-server)

  
  
Posted 4 years ago

Hey... Thanks for checking with me.
I didn't have time yet but will check it and let you know..

  
  
Posted 4 years ago

hey, I test it, it looks it works, still it takes much time (mainly in the second run of the code, it part of my eval process)

  
  
Posted 4 years ago

I don't have time to debug it yet.. will update more when I will have more time..
Thanks 🙏

  
  
Posted 4 years ago

AgitatedDove14 Hi, sorry for the long delay.
I tried to use 0.16 instead of 0.13.1.
I didn't have time to debug it (I am overwhelming with work right now).
But it doesn't work the same as 0.13.1. I am still getting some hanging in my eval process.
I am don't know if it just slower or really stuck since I killed it and move back to 0.13.1 until my busy time will pass.
Thanks

  
  
Posted 4 years ago

CooperativeFox72 this is indeed sad news 😞
When you have the time, please see if you can send a code snippet to reproduce the issue. I'd like to have it fixed

  
  
Posted 4 years ago

Sure, love to do it when I have more time 🙂

  
  
Posted 4 years ago
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