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6	dsic.upv.es!jroman	1
		2
		3	SLEPc: Scalable Library for Eigenvalue Problem Computations
		4	===========================================================
		5
2113	jroman	6	Developers:
2628	jroman	7	Carmen Campos
6	dsic.upv.es!jroman	8	Jose E. Roman
1668	slepc	9	Eloy Romero
237	dsic.upv.es!jroman	10	Andres Tomas
2113	jroman	11
		12	Former collaborators:
		13	Vicente Hernandez
6	dsic.upv.es!jroman	14	Vicent Vidal
		15
		16	GRyCAP - Grupo de Redes y Computacion de Altas Prestaciones
		17	Universidad Politecnica de Valencia, Spain
		18
2628	jroman	19	VERSION: 3.2
6	dsic.upv.es!jroman	20
1395	slepc	21
6	dsic.upv.es!jroman	22	Overview
		23	--------
		24
		25	SLEPc, the Scalable Library for Eigenvalue Problem Computations, is a software
		26	package for the solution of large sparse eigenvalue problems on parallel
		27	computers. It can be used for the solution of problems formulated in either
		28	standard or generalized form, as well as other related problems such as the
2628	jroman	29	singular value decomposition and the quadratic eigenproblem.
6	dsic.upv.es!jroman	30
		31	The emphasis of the software is on methods and techniques appropriate for
		32	problems in which the associated matrices are sparse, for example, those
		33	arising after the discretization of partial differential equations. Therefore,
		34	most of the methods offered by the library are projection methods or other
2113	jroman	35	methods with similar properties. Some of these methods are Krylov-Schur and
		36	Jacobi-Davidson, to name a few. SLEPc implements these basic methods as well
		37	as more sophisticated algorithms. It also provides built-in support for
6	dsic.upv.es!jroman	38	spectral transformations such as shift-and-invert.
		39
		40	SLEPc is a general library in the sense that it covers standard and genralized
		41	eigenvalue problems, both Hermitian and non-Hermitian, with either real or
		42	complex arithmetic.
		43
		44	SLEPc is built on top of PETSc, the Portable Extensible Toolkit for Scientific
		45	Computation (http://www.mcs.anl.gov/petsc). It can be considered an extension
		46	of PETSc providing all the functionality necessary for the solution of
		47	eigenvalue problems. This means that PETSc must be previously installed in
		48	order to use SLEPc. PETSc users will find SLEPc very easy to use, since it
		49	enforces the same programming paradigm. For those users which are not familiar
		50	with PETSc yet, our recommendation is to fully understand its basic concepts
		51	before proceeding with SLEPc.
		52
		53
		54	Documentation
		55	-------------
		56
		57	The Users Manual is included in the SLEPc distribution file. It can be found
		58	in directory 'docs' and it contains a general description of the capabilities
		59	of the software. The manual does not include detailed reference information
		60	about individual SLEPc routines. This information is provided in the form of
955	dsic.upv.es!jroman	61	man pages in HTML format (see 'docs/manual.htm').
6	dsic.upv.es!jroman	62
1668	slepc	63	The following journal article provides a general description of SLEPc:
6	dsic.upv.es!jroman	64
1668	slepc	65	[1] V. Hernandez, J. E. Roman and V. Vidal (2005), SLEPc: A Scalable and
		66	Flexible Toolkit for the Solution of Eigenvalue Problems, ACM Trans. Math.
		67	Softw. 31(3), 351-362.
		68
		69
6	dsic.upv.es!jroman	70	Installation
		71	------------
		72
		73	The installation procedure of SLEPc is very similar to that of PETSc. Briefly,
1668	slepc	74	the environment variable $SLEPC_DIR must be set, then the script 'configure'
955	dsic.upv.es!jroman	75	is executed and finally the libraries are built with the command 'make'. For
1388	slepc	76	this to work correctly, variable $PETSC_DIR must also be set appropriately.
6	dsic.upv.es!jroman	77
		78	More detailed information about installation can be found in the Users Manual
		79	or in the SLEPc home page, including instructions for configuring SLEPc to use
		80	external libraries such as ARPACK.
		81
		82
		83	More Information
		84	----------------
		85
		86	Additional information can be found in the SLEPc home page at the following
		87	address:
		88
		89	http://www.grycap.upv.es/slepc
		90
		91	Among other things, this site includes information about:
		92
		93	- How to contact the authors for support.
1668	slepc	94	- Software download.
6	dsic.upv.es!jroman	95	- On-line documentation.
		96	- Mailing list for announcement of new releases.
		97
		98	All questions/comments should be directed to slepc-maint@grycap.upv.es.
		99
		100
		101	Acknowledgements
		102	----------------
		103
		104	The development of SLEPc has been partially supported by the following grants:
		105
1215	slepc	106	- Oficina de Ciencia i Tecnologia, Generalitat Valenciana, CTIDB/2002/54.
		107	- Direccio General d'Investigacio i Transferencia de Tecnologia, Generalitat
		108	Valenciana, GV06/091.
2113	jroman	109	- Ministerio de Ciencia e Innovacion, TIN2009-07519.
6	dsic.upv.es!jroman	110
1668	slepc	111
1215	slepc	112	Conditions of Use
6	dsic.upv.es!jroman	113	-----------------
		114
2575	eromero	115	Copyright (c) 2002-2011, Universitat Politecnica de Valencia, Spain
6	dsic.upv.es!jroman	116
1668	slepc	117	SLEPc is free software: you can redistribute it and/or modify it under the
		118	terms of version 3 of the GNU Lesser General Public License as published by
		119	the Free Software Foundation.
6	dsic.upv.es!jroman	120
1668	slepc	121	SLEPc is distributed in the hope that it will be useful, but WITHOUT ANY
		122	WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
		123	FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for
		124	more details.
6	dsic.upv.es!jroman	125
1668	slepc	126	You should have received a copy of the GNU Lesser General Public License
		127	along with SLEPc. If not, see <http://www.gnu.org/licenses/>.
6	dsic.upv.es!jroman	128

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