Re: 3.9.10

On Sat, Mar 21, 2009 at 8:48 AM, Clint Whaley <whaley@...> wrote:
> OK, the first thing is that when you throw the '-Si latune 1' flag to configure,
> and I haven't provided lapack architectural defaults, you might as well
> kick back while the install runs, and runs, and runs . . .   :)

> It is expected that these QR tunings will take hours on an x86 (and they
> take days on a MIPS, for instance).  Right now the tuning is completely BFI,
> and I'd have to spend a lot of time to see how to improve it, and I'm not
> sure how much improvement we would see.  Therefore, I am not concentrating
> on improving this right now, so for the forseeable future if you add latune 1
> w/o arch defs, you can expect a loooooong install (that is why latune is not
> on by default).

The whole goal of this is to do some in-core SVDs, so I think I need
to do the latune.

> So, now your question can be reduced to: why don't I have lapack arch defs
> for these architectures?  So far, I have provided them for only a small
> subset of machines that I use every day.  I have no access to any Turion procs,
> so that guy is obviously out.  I believe 3.9.10's HAMMER64SSE3's arch defs
> should have the lapack arch defs, which means that it should spend no time in
> lanbtst.  What is the ARCH string that ATLAS configures your machine as
> (for instance, the 32 bit of the above, or the SSE2 version, does not have
> lapack arch defs)

The Turion is off the network at the moment, but the Athlon64 X2 log
file up to the present is attached. I can send you the Turion log when
it is done if you want. My recollection is that a Turion is an Athlon
with smaller caches.
>
> Cheers,
> Clint
>
> **************************************************************************
> ** R. Clint Whaley, PhD ** Assist Prof, UTSA ** www.cs.utsa.edu/~whaley **
> **************************************************************************
>



--
M. Edward (Ed) Borasky
http://www.linkedin.com/in/edborasky

I've never met a happy clam. In fact, most of them were pretty steamed.


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