[Mesa-users] MESA multithreaded performance

[Nicholas Herrington]

Hi Zach, Rob and Jeremy

Thank you for your responses, I will probably go with more cores.

Also has anyone found any difference between running mesa from an SSD or
HDD?

Cheers
Nick


On Thu, 2 Jul 2020 at 15:31, Meisel, Zach via Mesa-users <
mesa-users at lists.mesastar.org> wrote:

> For what it’s worth, for X-ray bursts I find diminishing returns beyond 4
> cores.
>
>
>
> -Zach
>
>
>
> ----
> Zach Meisel
> Associate Professor of Physics & Astronomy
>
> Director, Edwards Accelerator Laboratory
> Ohio University
> Email: meisel at ohio.edu
> Web: http://inpp.ohio.edu/~meisel
>
>
>
> *From: *Rob Farmer via Mesa-users <mesa-users at lists.mesastar.org>
> *Sent: *Thursday, July 2, 2020 10:23 AM
> *To: *Jeremy Sakstein <sakstein at hawaii.edu>
> *Cc: *Nicholas.Herrington at myport.ac.uk; mesa-users at lists.mesastar.org
> *Subject: *Re: [Mesa-users] MESA multithreaded performance
>
>
>
> Hi,
>
>
>
> There is a discussion of this in section 6 of
> https://ui.adsabs.harvard.edu/abs/2019ApJS..243...10P
>
>
>
> The short answer depends on the problem, but you're probably maxing the
> benefit at ~12 threads for most problems.  I would usually say if you're
> running one mesa problem at a time get a faster cpu, if you're running
> multiple mesas at once then get more cores.
>
>
>
> Rob
>
>
>
> On Thu, 2 Jul 2020 at 16:01, Jeremy Sakstein <sakstein at hawaii.edu> wrote:
>
> Hi Nick,
>
>
>
> In my experience this depends on what type of star you are running. Using
> both r12266 and r12778 I found:
>
>
>
> solar mass main-sequence/RGB before helium burning/low-Z blue loops worked
> best with about 4 cores.
>
>
>
> RSP test_suite cases didn't seem to use more than two cores even when I
> requested more.
>
>
>
> Big jobs like the PPISN test_suite worked best with 16 cores.
>
>
>
> I hope this helps, I'm sure people who have tested this more
> systematically than me have a better idea.
>
>
>
> Cheers,
>
>
>
> Jeremy
>
>
>
>
>
>
>
> On Thu, Jul 2, 2020 at 9:54 AM Nicholas Herrington via Mesa-users <
> mesa-users at lists.mesastar.org> wrote:
>
> Hi all
>
>
>
> I just had a quick question. I am upgrading my Linux machine and I’m just
> wondering from people’s experience does MESA favour more cpu cores or
> faster single core, if that makes sense?
>
>
>
> Trying to decide between two CPUs of same generation, one has less cores
> but higher clock speeds and the other has more cores but lower clock speeds.
>
>
>
> Thanks
>
> Nick
>
> _______________________________________________
> mesa-users at lists.mesastar.org
> https://lists.mesastar.org/mailman/listinfo/mesa-users
> <https://nam03.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.mesastar.org%2Fmailman%2Flistinfo%2Fmesa-users&data=02%7C01%7Cmeisel%40ohio.edu%7C3930fc9d04aa48b6585608d81e938c61%7Cf3308007477c4a70888934611817c55a%7C0%7C0%7C637292966351255824&sdata=95%2BvR6LqBvuTgSaZ%2FZh%2Fnf9WgF7hBNqZLBKHWpo6WTo%3D&reserved=0>
>
>
> _______________________________________________
> mesa-users at lists.mesastar.org
> https://lists.mesastar.org/mailman/listinfo/mesa-users
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.mesastar.org/pipermail/mesa-users/attachments/20200703/a36d2eb5/attachment.htm>