Atlas

From Vd

The ATLAS (Automatically Tuned Linear Algebra Software) project is an ongoing research effort focusing on applying empirical techniques in order to provide portable performance. At present, it provides C and Fortran77 interfaces to a portably efficient BLAS implementation, as well as a few routines from LAPACK.

Both Intel Math Kernel Library, AMD Math Core Library and the Goto library contain BLAS and provide better efficiency and we strongly suggest using one of these instead of ATLAS.