I know that ATLAS is able to optimize itself for the machine it is compiled on and thus maximum benefits are found by compiling from source. Is there any benefit to compiling LAPACK from source? It would be much easier to just install the prebuilt package.
Is there any benefit to compiling LAPACK from source versus installing the prebuilt package from Ubuntu?
performance;lapack
OpenBlas is quite fast, so you can link it to LAPACK. Have you tried precompiled version of LAPACK/BLAS from your CPU vendor? For example AMD ACML (free) or Intel MKL (free on linux for non-commercial and non-academic use)? You simply need to unpack and run install file.In my opinion the only advantage of using ATLAS is then when you use some unusual CPU. Otherwise use the one from CPU vendor. Also there are nVIDIA CUDA and AMD OpenCL versions available which really rock.EDIT: remember that you can always build an Ubuntu DEB package from source which is usually much easier than compiling software from source.