atlas

Compiling numpy with OpenBLAS integration

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I just compiled numpy inside a virtualenv with OpenBLAS integration, and it seems to be working OK. This was my process: Compile OpenBLAS: $ git clone https://github.com/xianyi/OpenBLAS $ cd OpenBLAS && make FC=gfortran $ sudo make PREFIX=/opt/OpenBLAS install If you don’t have admin rights you could set PREFIX= to a directory where you have write … Read more

What is the relation between BLAS, LAPACK and ATLAS

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BLAS is a collection of low-level matrix and vector arithmetic operations (“multiply a vector by a scalar”, “multiply two matrices and add to a third matrix”, etc …). LAPACK is a collection of higher-level linear algebra operations. Things like matrix factorizations (LU, LLt, QR, SVD, Schur, etc) that are used to do things like “find … Read more

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