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Re: [Cado-nfs-discuss] Computation on multi-socket server


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  • From: Valentin Janser <valentin@wans-janser.de>
  • To: cado-nfs-discuss@lists.gforge.inria.fr
  • Subject: Re: [Cado-nfs-discuss] Computation on multi-socket server
  • Date: Thu, 16 Apr 2020 16:49:31 +0200
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Dear Paul,


Am 16.04.2020 um 15:38 schrieb paul zimmermann:
> Dear Valentin,
>
> it appears from looking at your console logs that singlecpuserver.out.txt
> is using cado-nfs 2.3.0, while dualcpuserver.out.txt is using the
> development
> version.

now that you say it, it comes to my mind.

I didn't think there was any big difference between these versions which
is why I did not pay a lot of attention to it...

> It might well be there is some inefficiency in the development version.
You are totally right.
> Please can you try on your dual-core server with 2.3.0?

I factored the same, 100-digit RSA number again (on the
dual-cpu-server), this time I got a cpu time of 11127 seconds and a wall
clock time of 533 seconds!

I think that's a great time to achieve, no application can scale 100 %
efficiently with an increasing number of cores/cpus.

> Best regards,
> Paul

Thank you for your time, stay safe and keep up the great work!


Best regards,

Valentin






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