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Date: Wed, 3 Oct 2012 21:33:15 +0200
From: Florent Hivert <Florent.Hiv...@lri.fr>
To: sage-devel@googlegroups.com
Subject: Re: [sage-devel] combinat is not responding...
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User-Agent: Mutt/1.5.21 (2010-09-15)

      Hi,

> combinat.math.washington.edu is now fixed.  For some mysterious
> reasons the ufw firewall was active, with evidently *no* rules, and it
> was blocking most everything.   I don't know 100% for certain why this
> happened; however, I've just done:
> 
>   apt-get remove unattended-upgrades ufw
> 
> so it is unlikely to happen again.

Thanks !!!

> Note that there was no downtime or interruption of anybody's jobs, and
> this was not caused by over-use. (This is the only problem we have
> ever had so far with combinat, by the way!)

A few weeks ago, due to a huge memory leak in a code running in parallel on 32
core, I had my computation killed due to a failed memory alloc. combinat was
not very responsive for a couple of minutes but I had the impression that
except my computations nothing suffered from it. As a consequence I didn't
mention it. Does someone know if it is possible to know if there were some
other consequences ?

Cheers,

Florent