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Re: [Cado-nfs-discuss] Restarting BWC with different # threads


Chronological Thread 
  • From: paul zimmermann <Paul.Zimmermann@inria.fr>
  • To: paul.leyland@gmail.com
  • Cc: cado-nfs-discuss@lists.gforge.inria.fr
  • Subject: Re: [Cado-nfs-discuss] Restarting BWC with different # threads
  • Date: Thu, 16 Apr 2015 23:09:38 +0200
  • List-archive: <http://lists.gforge.inria.fr/pipermail/cado-nfs-discuss/>
  • List-id: A discussion list for Cado-NFS <cado-nfs-discuss.lists.gforge.inria.fr>

Dear Paul,

1) please say which version you are using (2.1.1 or git revision xxx)

2) please provide the console output you get (including the error) and the
*.log file

Paul Z.

> From: Paul Leyland <paul.leyland@gmail.com>
> Date: Thu, 16 Apr 2015 10:09:38 +0100
>
> Apologies if this in the documentation somewhere but I haven't yet found
> it.
>
> Early this morning the linear algebra started with the default 1x2
> threads. The machine has 8 cpus (dual quad-cores) and it would seem to
> make sense run on at least four of them so I killed the running krylov,
> edited the params file to set tasks.linalg.bwc.threads = 2x2 and
> restarted.
>
> Almost instant failure.
>
> What is the recommended way of making this change?
>
> Thanks,
> Paul
>
>
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