[178] in mathematical software users group

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Extract from NA digest vol 96 Issue 5

daemon@ATHENA.MIT.EDU (Steve Ellis)
Mon Feb 5 09:00:17 1996

To: msug@MIT.EDU
Date: Mon, 05 Feb 1996 08:57:35 EST
From: Steve Ellis <ellis@MIT.EDU>


Here is an announcement from the NA digest regarding availability of
test matrices. The NA digest is archived at MIT in

   /afs/athena/software/mathlibrary/NA-digest
   

From: Roldan Pozo <pozo@cam.nist.gov> 
Date: Sat, 3 Feb 96 15:06:07 EST
Subject: Announcement of "Matrix Market" Web Site  

Looking for application matrices to test your numerical software? 
"Matrix Market" (http://math.nist.gov/MatrixMarket) is a new visual 
database which makes it easy to browse, search, view, and download 
matrix test data.

Using the search tool, one can request matrices with particular
attributes, such as "symmetric eigenvalue problems larger than 500x500" or
"matrices from structural engineering applications". Once a particular
matrix is found, one can view its sparsity pattern at various levels of
detail, and review other pertinent data before deciding to download. 

Matrix Market is currently an experimental prototype. Its initial database
is made up of the approximately 300 problems from the Harwell-Boeing
Sparse Matrix Collection (courteously provided by Iain Duff and
colleagues). We expect to expand the database in the coming months, and
will provide mechanisms for users to contribute new matrices to the
collection. We are very interested in hearing any comments about the form
and utility of this service. 

(*) Matrix Market was designed and developed by R. Boisvert, R. Pozo, 
K. Remington (National Institute of Standards and Technology), 
J. J. Dongarra (Univ. of Tennessee), and R. Barrett (Los Alamos).



Steve Ellis
ellis@mit.edu

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