**Automatically Tuned Linear Algebra Software**

**Automatically Tuned Linear Algebra Software (ATLAS)** is a software library for linear algebra. It provides a mature open source implementation of BLAS APIs for C and Fortran77.

ATLAS is often recommended as a way to automatically generate an optimized BLAS library. While its performance often trails that of specialized libraries written for one specific hardware platform, it is often the first or even only optimized BLAS implementation available on new systems and is a large improvement over the generic BLAS available at Netlib. For this reason, ATLAS is sometimes used as a performance baseline for comparison with other products.

ATLAS runs on most Unix-like operating systems and on Microsoft Windows (using Cygwin). It is released under a BSD-style license without advertising clause, and many well-known mathematics applications including MATLAB, Mathematica, Scilab, Sage,and some builds of GNU Octave may use it.

Read more about Automatically Tuned Linear Algebra Software: Functionality, Optimization Approach, Level 3 BLAS, LAPACK, Need For Installation

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**Automatically Tuned Linear Algebra Software**- Need For Installation

... For many systems, architectural default parameters are available these are essentially saved searches plus the results of hand tuning ... If the arch defaults work they will likely get 10-15% better performance than the install search ...

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