Programs in Physics & Physical Chemistry
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|Manuscript Title: SPARSEM: a subroutine package to operate with large sparse matrices.|
|Authors: S.J. Sciutto|
|Program title: SPARSEM|
|Catalogue identifier: ACNQ_v1_0|
Distribution format: gz
|Journal reference: Comput. Phys. Commun. 77(1993)84|
|Programming language: Fortran.|
|Computer: MICROVAX II.|
|Operating system: VMS V4.7.|
|RAM: 270K words|
|Word size: 32|
|Keywords: General purpose, Sparse matrices, Matrix algebra, Compact storage, Discrete systems.|
Nature of problem:
Sparse matrices appear in a number of physical problems, such as discrete systems with many degrees of freedom; exact diagonalization of quantum clusters; etc.
The matrices may be stored in row (column) format as needed. Only the non-null elements of each row (column) are kept. Operations are performed maintaining the format, thus avoiding working space requirements.
Matrix sizes are only limited by the amount of memory available on the computer, and their degree of sparseness.
1.11 seconds for the test run.
|||For language definition, see "Programming in VAX FORTRAN," Digital Equipment Corporation publication AA-D034D-TE; Maynard (MA), U.S.A. (1984).|
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