Detection of BLAS library ?

[sajids...@u.northwestern.edu]

Hi libflame developers,

I was looking at the configure scripts and wondering how libflame configure decides which blas library to use (in the case when I have multiple BLAS implementations installed). Can I specify the location of BLAS I want it to link against for deterministic builds ?


Thank You,

Sajid Ali

Applied Physics

Northwestern University

[Field G. Van Zee]

Hi Sajid,

libflame's configure script doesn't actually decide which BLAS library
to use, because libflame (generally speaking) doesn't provide a BLAS
library*. The choice of which BLAS library to use is made by the
end-user when linking his/her application.

Field

*There is one exception to this, which is when libflame is configured to
be compiled with built-in BLAS, but almost nobody should ever be doing
this anyway because it will result in ultra-low performance in that BLAS
code. You should almost always use an optimized BLAS or BLAS-like
library such as BLIS [1].

[1] https://github.com/flame/blis

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[sajids...@u.northwestern.edu]

Hi Field,

Thanks for the info!