Emmanuel Charpentier wrote:
The only annoying thing is the time for ATLAS/LAPACK to get optimized
(scratch build is 222 minutes, vs about 40 minutes with
SAGE_FAT_BINARY="yes", which doesn't optimize ATLAS). Is there a way to
save the result of optimization and use it later in a new
build-from-scratch on the same machine ?

Well, you can use SAGE_ATLAS_ARCH to give ATLAS some hints.

And you could save the libraries somewhere outside the Sage tree and use SAGE_ATLAS_LIB later on. Unfortunately there's still no script to do that, AFAIK.


-leif

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