I once tried to build ATLAS once and for all (for an old laptop where I was 
tired of waiting overnight for building Sage), and I eventually failed, but 
not before finding that there was a mismatch between what the spkg install 
script thinks the list of architectures is, and what the ATLAS makefile 
thinks the list of architectures is. So, it may be that you are telling 
Sage to build ATLAS for a Corei7, but then ATLAS actually hears that it 
should build for a different architecture.

I thought I had created a ticket for this, but now I can't find it.

It takes a certain amount of work to get the list of architectures for 
ATLAS: if I recall correctly, there is a 'make' target which will create 
diagnostic/documentation programs, and running one of them will tell you 
the list of architectures, along with the corresponding flags to specify 
each one.

It may be less work to just use the new ATLAS-3.10 spkg, as Volker suggests.

Cheers,
Mathieu

On Saturday, 19 January 2013 02:11:07 UTC-5, Andrey Novoseltsev wrote:
>
> Hello, 
>
> I am trying to compile Sage-5.6.rc0 inside a virtual machine with 
> SAGE_ATLAS_ARCH=Corei7,SSE3,SSE2,SSE1 and it fails with 
>
>
> First attempt: automatic tuning. 
> Running configure with arch = Corei7 and isa extensions ['SSE3', 
> 'SSE2', 'SSE1'] 
>

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