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Langue: en

Version: January 29, 2002 (debian - 07/07/09)

Section: 1 (Commandes utilisateur)


x{s,d,c,z}c?blat{1,2,3} - testing programs for blas


x{s,d,c,z}c?blat{2,3} < parameter file


This manual page documents briefly the blas testing programs. This manual page was written for the Debian GNU/Linux distribution because the original programs do not have manual pages.

blas is a library of Basic Linear Algebra routines, accessed through either a Fortran and/or a C interface. These routines are categorized into three levels: level1 referring to vecotr-vector operations, level2 to matrix-vector operations, and level3 to matrix-matrix operations. In addition, all routines are written in four "precisions", single precision real (s), double precision real (d), cingle precision complex (c), and double precision complex (z).
The testing binaries examine routines in the level indicated by the last character in the program name and in the precision indicated by the second character in the program name. The stem "blat" in the program name refers to a Fortran interface tester, whereas a "cblat" stem refers to a C interface tester.
The test programs for levels 2 and 3 read a set of parameters specifying the problem ranges to examine on standard input. Sample input files are found in /usr/share/doc/blas-test/examples. Files of the form {s,d,c,z}in{2,3} are input files for the C interface testing programs, while files or the form {s,d,c,z}blat{2,3}d are input files to the Fortran testing programs.
On Debian systems, these programs are dynamically linked against the blas library. This enables the user to test and compare alternate versions of the library, such as those provided by atlas, through the use of the LD_LIBRARY_PATH and LD_PRELOAD environment variables. One can confirm the versions of the libraries being tested in a given environment with the aid of the ldd program.


These programs take no command line options.


This manual page was written by Camm Maguire <>, for the Debian GNU/Linux system (but may be used by others).
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