Hello all,

for the SPECv8 contribution we had at one point mentioned 3 options that we could propose:

* McLachlan's ccZ4 formulation (in master) * McLachlan's Z4c formulation (in rhaas/Z4c) * a version of McLachlan that pre-computes all derivatives as grid functions the way that the CUDA code does (in rhaas/separatedderivatives)

Please use this form:

https://docs.google.com/forms/d/e/1FAIpQLSdtnvxu-PA5gxY7o-fFWARPFOby8joz4-nC...

to voice preference for one or the other.

At this point none have been extracted and incorporated into the min-driver used for SPEC.

Yours, Roland

Present: Yosef, Steve, Roland, Peter D, Bill, Kenneth, Atul, Karim, Miguel, Zach Chair: Yosef Notes: Steve

SPEC Benchmark:

All paperwork is done.

Roland hasn't set the poll out, but ready to send out. All three versions, though, compile and run. He had to modify Kranc.

Overview of CarpetX:

Can do some science but could use some real world workload No existing thorns work, but new thorns could be adapted. Can use GPUs (can run Hydro toy code)

Indicate interest in seeing the overview on Gitter chat https://urldefense.com/v3/__https://gitter.im/EinsteinToolkit/EinsteinToolki...

Yosef would like to attend but cannot login to Gitter

Maybe have an overview presented on the call? Maybe start regular presentations up again? Have Gabriele Rozzola give a talk? Seminars should be recorded. They can be edited.     Gabriele Rozzola accepted Old seminars: https://urldefense.com/v3/__http://einsteintoolkit.org/seminars/__;!!DZ3fjg!...

Discussed Karima's issue with simfactory and the parfile. She should send the parfile to the mailing list.

Open tickets: Python3 version of simfactory. Roland is still working on the survey for which simfactory features are used. He will send the survey out.

Ticket 963, open since 2012. Peter Diener will take a look. Steve will try to look at 2462 to potentially approve it. Yosef looked at ticket 2486 on the call and approved it.

Feb 4:     Minutes: Roland     Chair: Yosef

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