2 Jul 1996 12:37:27 -0400

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Subroutine On Demand-service peterk@CS.LeidenUniv.NL (1996-07-02) |

From: | peterk@CS.LeidenUniv.NL (P. Knijnenburg) |

Newsgroups: | comp.compilers |

Date: | 2 Jul 1996 12:37:27 -0400 |

Organization: | Leiden University, Dept. of Mathematics & Computer Science, The Netherlands |

Keywords: | available, arithmetic, WWW |

Subroutine On Demand-service

The Computer and Software Systems group of the Department of Computer Science

at Leiden University proudly presents a new WWW service.

In the mathematical software community, it has been widely accepted that

adopting a library of basic routines for problems in linear algebra can help

in improving the clarity, portability, modularity, maintenance, robustness,

and even the efficiency of mathematical software. Examples of such

libraries include Level 1, 2, 3 BLAS, EISPACK, LINPACK, LAPACK etc. These

libraries mainly deal with dense matrices. A similar approach can be taken

for mathematical software that deals with general sparse matrices. The

package SPARSKIT provides many primitives for working with sparse matrices.

Developing, optimizing, and maintaining sparse software by hand is an

error-prone and complex task. In an attempt to resolve these problems, the

group at Leiden has proposed an alternative approach to the development of

sparse software. Rather than dealing with the sparsity of matrices at

programming level, the sparsity is dealt with at compilation level. A

special kind of restructuring compiler, referred to as a sparse compiler,

automatically transforms a dense program into efficient sparse code that

operates on sparse storage schemes.

This experimental service provides you with an interface to our sparse

compiler and allows you to obtain sparse versions of Level 2 BLAS and Level

3 BLAS subroutines. The compiler transforms the program into a sparse

version which is then sent back to you.

The Subroutine On Demand-service can be accessed through the following URL:

http://hp137a.wi.leidenuniv.nl:8080/blas-service/blas.html

We hope to welcome you to our service,

Best regards,

Aart J.C. Bik

Peter J.H. Brinkhaus

Peter M.W. Knijnenburg

Harry A.G. Wijshoff

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