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* [gentoo-science] BTL
@ 2011-09-02 23:11 Andrea Arteaga
  2011-09-04 23:59 ` fbissey
  0 siblings, 1 reply; 3+ messages in thread
From: Andrea Arteaga @ 2011-09-02 23:11 UTC (permalink / raw
  To: gentoo-science

For the interested on benchmarks, I wrote a proposal for writing a new
version of the BTL. You can read it on my blog: http://wp.me/pzWEm-99

The BTL is a benchmarking library written in C++ and maintained (now)
by the project Eigen. In my opinion it needs some changes, and the
article describes why and which ones. I'm waiting for feedback on the
proposal before coding anything.

Cheers
Andrea Arteaga



^ permalink raw reply	[flat|nested] 3+ messages in thread

* Re: [gentoo-science] BTL
  2011-09-02 23:11 [gentoo-science] BTL Andrea Arteaga
@ 2011-09-04 23:59 ` fbissey
  2011-09-05 21:07   ` Andrea Arteaga
  0 siblings, 1 reply; 3+ messages in thread
From: fbissey @ 2011-09-04 23:59 UTC (permalink / raw
  To: gentoo-science

Quoting Andrea Arteaga <andyspiros@gmail.com>:

> For the interested on benchmarks, I wrote a proposal for writing a new
> version of the BTL. You can read it on my blog: http://wp.me/pzWEm-99
>
> The BTL is a benchmarking library written in C++ and maintained (now)
> by the project Eigen. In my opinion it needs some changes, and the
> article describes why and which ones. I'm waiting for feedback on the
> proposal before coding anything.
>
There is a related area that would be of interest to me. It can be put under
benchmarks as well. So far, you have been looking into performance, I 
am curious
about conformance and possibly precision benchmarking.

Does the library behave as it should. What is the accuracy of the result, do
some version of the libraries give more precise results than another
implementation.

This is particularly important to me because of the discussion we 
generate here:
https://github.com/cschwan/sage-on-gentoo/issues/3
and
http://trac.sagemath.org/sage_trac/ticket/10508
where it is clear to me that it is due to something that gives a different
result in cblas from ATLAS-3.9 and it would be good to test this formally.

Francois





^ permalink raw reply	[flat|nested] 3+ messages in thread

* Re: [gentoo-science] BTL
  2011-09-04 23:59 ` fbissey
@ 2011-09-05 21:07   ` Andrea Arteaga
  0 siblings, 0 replies; 3+ messages in thread
From: Andrea Arteaga @ 2011-09-05 21:07 UTC (permalink / raw
  To: gentoo-science

Hi Francois.

Thanks for the interest. You raised a very good point, which I forgot
to write about. During my GSoC project I also wrote accuracy
benchmarks and this was the only task that the BTL seemd unable to do
without being almost completely rethinked. This actually was a reason
because I decided to start designing a new-style BTL, but finally I
forgot to mention this.

So, now I'm trying to figure out how to make the design as flexible
that new type of benchmarks can be added (accuracy, but also memory
usage, scalability,...).

Cheers
Andrea



^ permalink raw reply	[flat|nested] 3+ messages in thread

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