[Users] Machines used with the Einstein Toolkit

Erik Schnetter schnetter at cct.lsu.edu
Tue Nov 29 19:23:15 CST 2016

On Tue, Nov 29, 2016 at 7:22 PM, Hee Il Kim <heeilkim at gmail.com> wrote:

> Hi Frank,
> How was the performance of KNL? I had a chance to run qc0 on a KNL test
> machine here (single node). It was 4.6x slower than Haswell 2.3GHz (AVX).
> The tests were done with -O1 option to bypass the issue of Intel 17.

That's approximately what I would expect. I've been fighting with an
(unrelated, luckily) segfault until a few days ago.

More on the machine:
> KNL 7230
> Centos 7.2 with xppsl-1.4.3
> Intel compiler 17.0.1
> Quadrant mode
> Cache/Flat modes tested with AVX512/AVX2/AVX
> Vectors thorn is going to be updated for AVX512?

Yes, the respective changes are implemented, and will be available after
the release freeze is lifted.


Please take a look at the attached option file.
> Hee Il
> 2016-11-23 6:42 GMT+09:00 Frank Loeffler <knarf at cct.lsu.edu>:
>> On Tue, Nov 22, 2016 at 04:37:19PM -0500, rahul kashyap wrote:
>>> Let me port first and then I'll follow your instructions for the tests.
>> I've put together an experimental simfactory entry to the new nodes. It
>> runs, and tests pass (except the ones from Dissipation). It should be
>> considered experimental because it does not fully implement proper logging
>> in, and I also used a compute node to compile (because I didn't want to
>> mess with cross-compiling on my first try). This works, but makes using the
>> machine a bit more 'hand-work' than others.
>> I'll upload those soon to simfactory, marked as 'experimental'.
>> Frank
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Erik Schnetter <schnetter at cct.lsu.edu>
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