What happened to Google Colab?

[Jürgen]

Since a day the Google Colab contribution is steadily decreasing. 

For me the Google Colab Script does not work anymore since a day, i always get the "Failed to assign backend" popup.

I suspect it does not work anymore, does it still work for anyone?

Does anybody know what is going on there?

It would be nice to figure out what is going on, since the service was a strong game-contributer.

[Juan Carlos Plasencia]

Hello,

for mi yes, but only 1 hour,.. to day is my first Google Colab sesion

now I restart egen, tell you more in few minits,..

[Juan Carlos Plasencia]

working about a one minute per game, is this usual ¡?

Google Colab tell me:

18/04/25 22:00:02 Completed 4 games in 3m58.346740735s time

[nszhan...@gmail.com]

Not working for me anymore as well. Same message.

[Jürgen]

this looks good! good to know.

maybe the time per user is somehow restricted further than the 12 hours per session as mentioned in the instructions posted in 

https://github.com/glinscott/leela-chess/wiki/Run-Leela-Chess-Zero-client-on-a-Tesla-K80-GPU-for-free-(Google-Colaboratory)

[nh78]

Also noticed that, it stops after ten minutes now. Other users at lichess also reported that they cant run it any more, notbook copy wont open.

[Chiefman]

Mine seems to Stall with the Red Play arrow after 10 mins and there are no new games being generated on the screen. But then if you look at your user name on the LCZ website you are still generating games

I hit intereupt and it sems to kick off again

[gravity_well]

I don't know guys. I can still generate games in the google colab, but I haven't been abusing it either.  I have contributed some games with it everday over the last week and the only time I let it run a full 12 hours was this past saturday april 21, 2018

[Jürgen]

Lucky you. It never worked for more then 3 hours for me, then always somehow the connection to the vm got lost.

I still think there is something has changed not only for me because the 'Google Colab' contribution was around 40000 games or more a few days ago and now it is around 13000.

I doubt everyone now changed to a custom user name.

[Juan Carlos Plasencia]

It does not seem a contradiction to them that Google collaborates with LCZ that is subtracting AlphaZ from its protagonism,
(well AlphaZ seems to have disappeared forever, .. was it swallowed by the Earth as Deep Blue?).

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[graci...@gmail.com]

Well it was expected they limit it at some point. They get no profit from it to begin with, just be thankful there is still some google colab instances running. Maybe someone should just buy the cloud instance and tell if they get the same hassle, probably not...

[Levente Kolcsar]

for me it works today 8 hours running so far, but probably they limit somehow the acces, to free up gpu-s for non lczero users, but i'm not sure about this, maybe the number of gpu's is saturated overall and that's why users can't acces the hardware. 

[Tristan Powderhorn]

I'm starting to get "Server gave back empty SHA" error over and over.
Not sure if this is limited to colab as it seems to be trying to transmit the game to the lc0 server.

[magicmulder]

That's because the lczero site appears to be down, not limited to Google Colab access. My local threads can't connect anymore, either.

[Jeremy Zucker]

I'm getting the same error message. Seems like an lczero server thing, not a Google Colab thing

2018/04/26 18:25:20 Server gave back empty SHA 2018/04/26 18:25:20 Sleeping for 30 seconds... 2018/04/26 18:26:20 Server gave back empty SHA 2018/04/26 18:26:20 Sleeping for 30 seconds...

https://www.linkedin.com/in/jeremyzucker

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