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Green bar in notebook

asked 2011-11-08 01:09:59 -0600

G-Sage gravatar image

It happens somewhat often, with different programs, that I click shift-enter to run a long calculation in Sage, and at some point later notice that the green bar is gone, but now that skinny red bar is there, as if it had never been run. And, if I try to run something else, even something that takes a millisecond, it sits there with the green bar. My thought is that the original long calculation is still running. Do you think my estimation is correct? If so, is this a known issue? Is there a way to fix it?

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answered 2011-11-12 04:09:19 -0600

William Stein gravatar image

Are you using one of the public servers such as http://sagenb.org? If so, you get the red bar because the server resets worksheets after 10 minutes of CPU time has elapsed. I configured it this way because there are tens of thousands of accounts, everything runs on a single computer (right now), and I wanted to control usage. Now that scalability has been improving a lot (due to work of Mike Hansen and others), I'll likely increase this time substantially.

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I just upped the timeout from 10 minutes to 1 hour, and am restarting all the public servers now.

William Stein gravatar imageWilliam Stein ( 2011-11-12 04:10:45 -0600 )edit

@WilliamStein Actually, no it's not a public server. And, there is no timeout on this server. But, thanks for the idea.

G-Sage gravatar imageG-Sage ( 2011-11-13 01:28:48 -0600 )edit
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answered 2011-11-08 02:05:33 -0600

Jason Grout gravatar image

That's possible. Can you give an example of such a computation for sagenb.org? We can look at the network traffic and try to diagnose it.

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Asked: 2011-11-08 01:09:59 -0600

Seen: 95 times

Last updated: Nov 12 '11