BLAS The BLAS (Basic Linear Algebra Subprograms) are high quality "building block" routines for performing basic vector and matrix operations. Level 1 BLAS do vector-vector operations, Level 2 BLAS do matrix-vector operations, and Level 3 BLAS do matrix-matrix operations. Because the BLAS are efficient, portable, and widely available, they're commonly used in the development of high quality linear algebra software, LINPACK and LAPACK for example. If a vendor-optimized version of the BLAS is not available, one can obtain a Fortran77 reference implementation from the blas directory on the Home Site below. However, this ``model implementation'' of the BLAS is not expected to perform as well as a specially tuned implementation on most high-performance computers -- on some machines it may give much worse performance -- but it allows users to run BLAS-based codes on machines that do not offer any other implementation of the BLAS.

Current Version:   N/A License Type:   Free

Home Site: http://www.netlib.org/blas/ Source Code Availability: Yes Available Binary Packages: Debian Package:   Yes http://www.debian.org/distrib/packages RedHat RPM Package:   No Other Packages:   Yes, see LAPACK and BLAS Libraries for Linux entry in SAL. Targeted Platforms: PCs, workstations Software/Hardware Requirements: None

Other Links: http://www.netlib.org/blas/blasqr.ps (Quick Reference Guide to the BLAS) ATLAS (Self Optimizing BLAS implementation) Pentium Pro Optimized BLAS PHiPAC BLAS-compatible matrix-matrix multiply generator. Pentium Optimized BLAS C_BLAS 123 Commercial, optimized BLAS for C dgemm for Alpha Chip with high performance Mailing Lists/USENET News Groups: lapack@cs.utk.edu for comments and questions. User Comments: Some commercial numerical libraries such as NAG F77 library and some commercial compilers such as PGI compiling system comes with compiled BLAS and LAPACK. See A Screen Shot? (Not Yet)

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