[Beowulf] Again about NUMA (numactl and taskset)

Carlos Segura carlossegurag at gmail.com
Wed Jun 25 08:34:24 EDT 2008


>In my experience, real applications as well, things like nwchem for
instance.  Granted the difference (at least in the past) was much >larger
for g77 vs commercial fortran than it was for gcc/g++ vs commercial c
compilers.  I've
>heard gfortran has gotten much better and I've even occasionally seen SPEC
>numbers for GNU compilers which looked encouraging.  In any case I've often
seen commercial compilers justified on a pure cost/benefit >basis.  I.e. $1k
on compilers gets me more performance than another $1k on hardware.

Some benchmarks about fortran compilers can be found on
http://www.polyhedron.com/pb05-linux-f90bench_p40html
The intel compiler have very good results. I also think that in the case of
fortran compilers there is more difference that in the case of C compilers,
although I haven`t seen comparissons of C compilers lately.

Carlos


2008/6/25 Chris Samuel <csamuel at vpac.org>:

>
> ----- "Bill Broadley" <bill at cse.ucdavis.edu> wrote:
>
> > Maybe I misread the license, what exactly let you
> > to believe that it's "free for researchers"?
>
> The Intel website is pretty clear on the matter and
> I'm pretty sure this is the case since they began their
> free non-commercial license program.
>
> # Q. I am engaged in research projects. Can I qualify to
> # use the noncommercial product?
> #
> # A. If you, as an individual, are receiving any form of
> # compensation for the research project (i.e., you receive
> # a salary, or funding, etc.) you do not qualify for a
> # non-commercial license.
>
>
> http://www.intel.com/cd/software/products/asmo-na/eng/download/download/219771.htm
>
> # This offering is provided to developers who are
> # developing software on their own time without
> # compensation.
>
> [...]
>
> # Note that academic use of the products does not qualify
> # for a non-commercial license. Intel offers heavily
> # discounted licenses to academic developers through
> # our Academic Developer Program.
>
> --
> Christopher Samuel - (03) 9925 4751 - Systems Manager
>  The Victorian Partnership for Advanced Computing
>  P.O. Box 201, Carlton South, VIC 3053, Australia
> VPAC is a not-for-profit Registered Research Agency
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