Re: [eigen] Help needed to run a benchmark on many machines

[Benoit Jacob <jacob.benoit.1@xxxxxxxxx>]

2015-02-18 16:07 GMT-05:00 Benoit Jacob <jacob.benoit.1@xxxxxxxxxx>:

2015-02-18 16:00 GMT-05:00 Gael Guennebaud <gael.guennebaud@xxxxxxxxx>:

I would also advocate to put it in bench/ and make it use BenchTimer, and if BenchTimer is not good enough then let's improve it.

Also don't forget -mfma on Haswell!

Oops, didn't realize that, many thanks!

Actually, it will be interesting to see if such arithmetic changes have an impact on optimal block sizes. I'll keep existing logs and add new logs with FMA alongside.

Result here:

http://download.tuxfamily.org/eigen/log-blocking-sizes/log-blocking-sizes-mac-intel-haswell-i7-4770hq-FMA.txt.gz

Benoit

Benoit

 

gael

On Wed, Feb 18, 2015 at 7:25 PM, Christoph Hertzberg <chtz@xxxxxxxxxxxxxxxxxxxxxxxx> wrote:

Am 18.02.2015 um 19:03 schrieb Hauke Heibel:

In VS 2012/2013, high_resolution_clock has only 1ms resolution. This
is supposedly fixed in VS 2015.

Can't we simply use bench/BenchTimer.h for this?

And even if this is experimental code, I'd prefer having this in the repository rather than sending different versions by mail.
Eventually, this might even be a starting point for performance-oriented unit-tests.

Christoph




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