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Re: [[Phys-npps-members-l] ] Extending the ARM of ATLAS computing

From: Brett Viren <bv AT bnl.gov>
To: Johannes Elmsheuser (via phys-npps-members-l Mailing List) <phys-npps-members-l AT lists.bnl.gov>
Cc: Johannes Elmsheuser <johannes.elmsheuser AT cern.ch>
Subject: Re: [[Phys-npps-members-l] ] Extending the ARM of ATLAS computing
Date: Wed, 16 Jul 2025 13:52:14 -0400

Really interesting.

The plot shows a clear motivation to use ARM for reasons of electricity.

Is there a similar plot that shows HS23 score / "initial cost"? My
guess (and Gemini seems to agree) is that ARM systems are also cheaper
(per unit compute).

The higher ARM core count at first might be a constraint but the ARM
systems seem to come with even higher RAM per core than I'm used to
seeing on existing Intel "grid" slots for DUNE.

Why are we not all using ARM!?

-Brett.

Johannes Elmsheuser (via phys-npps-members-l Mailing List)
<phys-npps-members-l AT lists.bnl.gov> writes:

> Hi all,
>
> there is now a short ATLAS experiment briefing article online about
> 'Extending
> the ARM of ATLAS computing':
> https://urldefense.com/v3/__https://atlas.cern/Updates/Briefing/ARM-for-ATLAS__;!!P4SdNyxKAPE!C28oeCyn7iiJtIKC5_P-LDnwmtP3JrMD_07R_denFoEklJTdrOblNTgQCBNQcUTYCvI1afSAv2L7BWXyFrgQwHtmlKwxU71TblliefmKgsqD$
> Enjoy !
> Cheers, Johannes

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[[Phys-npps-members-l] ] Extending the ARM of ATLAS computing, Johannes Elmsheuser, 07/16/2025
- Re: [[Phys-npps-members-l] ] Extending the ARM of ATLAS computing, Brett Viren, 07/16/2025
  - Re: [[Phys-npps-members-l] ] Extending the ARM of ATLAS computing, Johannes Elmsheuser, 07/16/2025