Madgraph5 GPU development

513/R-070 - Openlab Space (CERN)

513/R-070 - Openlab Space


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Madgraph5 GPU development
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Stefan Roiser
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# Madgraph meeting

Present: SH, JT, AV, OM, CV, NN, TC, WH
Excused: SR, ZW

## Round table

OM: ntr

CV: waiting to do performance tests when there is code ready for that if you have something specific for our T4s
SH: T4s are a bit old/weak, why those?
CV: this is what we bought for CMS at our T2, running both ML and reco
SH: do you know if they are single precision or double precision workflows?
CV: not sure, will ask colleagues

NN1: doing some tests on tt+4jet ggttgggg! But did not even manage to generate cudacpp code...
AV to OM: any work on recursion relations in madgraph actually?
OM: yes wrote a paper last year, this might evolve, but the integrator is not good for that
NN2: also noticed something strange, the Fortran MEs built within the SYCL installation give different results
It may be that the source code is different
AV: check the source code, maybe you are using a different upstream commit?

TC: ntr

WH: ntr

JT: working on containerization of scripts
AV: be aware we did a lot of work on this in the benchmarking project (mainly docker and singularity, not podman)
JT: one problem is that nvidia have good support for el7, but not much for el8...

AV1: gave the CAF talk last week or the week before
AV2: upgrading my infrastructure to alma9 from centos7

SH1: not done much, will try to arrange a chat with OM
Doing some unweighting on the GPU, debugging some issues
(this could be interesting to move extra cycles from the CPU to the GPU)
SH2: upgraded the CI to alma9
SH3: proposed an openlab summer student project for using the new fptype that tracks its own precision

## AOB

OM: upcoming meeting in Italy in September organized by Marco Zaro and Fabio Maltoni

Next meeting: Tue March 7th





There are minutes attached to this event. Show them.
    • 3:00 PM 3:10 PM
      News 10m
    • 3:10 PM 3:30 PM
      Topical discussion 20m
    • 3:30 PM 3:50 PM
      Round table 20m
    • 3:50 PM 4:00 PM
      AoB 10m