Re: [Boost-users] uBLAS vs IntelMKL/AMD/SunPerf

From: Damien Hocking (damien_at_[hidden])
Date: 2008-04-25 08:51:07

Actually, BLAS has a defined interface in C and Fortran 77.  You can link
any of those libraries (using their headers as appropriate) to a program
that needs BLAS and they should work.  The Intel and AMD libraries both have
very good performance on their competitors' chips.  Any of these libraries
is about twice as fast as the reference Netlib BLAS.  It doesn't look like
uBLAS can delegate to these libraries, they have different interfaces and
there would be a significant performance hit translating from the uBLAS
structures (matrix, vector_expression classes, etc) to the bare-bones BLAS
interface. 

HTH,

Damien

-----Original Message-----
From: boost-users-bounces_at_[hidden]
[mailto:boost-users-bounces_at_[hidden]] On Behalf Of Hicham Mouline
Sent: Friday, April 25, 2008 2:31 AM
To: boost-users_at_[hidden]
Subject: [Boost-users] uBLAS vs IntelMKL/AMD/SunPerf

hello,
i am writing BLAS L3 code that i wish to be optimal on 3 CPU kinds (Intel
core2, AMD k8/k10, SPARCIV+/T1/T2).
There are IntelMKL, AMD perf and SUN perf library that are supposedly
optimized for the respective processor.
They probably (haven't looked yet) have different interfaces.
Then there is uBLAS.
Is uBLAS configurable to forward calls to the 3rd party lib, or should i
just study these libs, and introduce myself
an indirection layer?

Any thoughts appreciated,

rds,
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