Re: 3.9.10

Ed,

>Meanwhile ... I am running into something on both my Turion64 X2
>laptop and Athlon64 X2 desktop. Both of them build successfully
>"eventually", but they are taking a very long time in the make step. I
>haven't actually sat down and figured out how many hours this runs,
>but I've got them both running now and the Athlon64 2.2 GHz is showing
>that xclantst_pt has consumed 86 minutes of CPU time. The Turion64 2.1
>GHz is showing xzlanbtst with 87 minutes of CPU time. Here's the build
>script:

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).

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)

Cheers,
Clint

**************************************************************************
** R. Clint Whaley, PhD ** Assist Prof, UTSA ** www.cs.utsa.edu/~whaley **
**************************************************************************

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