From: young Date: Sat, 30 Mar 2013 12:44:06 +0000 (+0000) Subject: Instructions on installing slepc. X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a53439eb13d84aa381cb3be35bf6e3e4d8984ffb;p=dealii-svn.git Instructions on installing slepc. git-svn-id: https://svn.dealii.org/trunk@29114 0785d39b-7218-0410-832d-ea1e28bc413d --- diff --git a/deal.II/doc/external-libs/slepc.html b/deal.II/doc/external-libs/slepc.html new file mode 100644 index 0000000000..3009d4bdb7 --- /dev/null +++ b/deal.II/doc/external-libs/slepc.html @@ -0,0 +1,112 @@ + + + + The deal.II Readme on interfacing to SLEPc + + + + + + + + + + +

Interfacing deal.II to SLEPc

+ +

+ SLEPc is a software package that provides + functionality for solving a variety of eigenspectrum problems, + both standard and generalised. It relies on various different + sparse and dense matrix and vector formats that are defined in + the PETSc package. Naturally, this means PETSc must be + correctly installed before a working copy of SLEPc can be + installed as described here. +

+ +

+ deal.II has wrapper classes to the solver and + spectral transformation parts of SLEPc that loosely provide + almost the same interfaces as the wrapper classes to the PETSc + functionality. They are used in a simple case in step-36. +

+ +

Installing deal.II with SLEPc

+ +

+ SLEPc requires the environment variables PETSC_DIR + and PETSC_ARCH to be set already and usually + requires you to set the environment + variable SLEPC_DIR as well. If the environment + variable is set, then + deal.II will pick up on this during + configuration; just as before with PETSc. +

+ +

+ Alternatively, the -DSLEPC_DIR=DIR option + for cmake can be used to override the values + of SLEPc_DIR if, for example, these environment + variables are not set at all. You can also + specify -DDEAL_II_WITH_SLEPC=OFF as a flag during + configuration to have deal.II completely + ignore a SLEPc installation. +

+ +

Installing SLEPc

+ +

+ Note: The version numbers (x,y,z) of your SLEPc + installation must be identical to the same version numbers of + your PETSc installation. +

+ +

+ Installing SLEPc is not much of a challenge once PETSc has been + correctly installed (check this first!). What is happening here, + is that SLEPc scans your PETSc installation and figures out how + that was configured; its location, the + given PETSC_ARCH, MPI settings, debug + mode, and so on. +

+ +

+ This builds a simple SLEPc installation: + 

+
+	tar xvzf slepc-x-y-z.tar.gz
+        cd slepc-x-y-z
+	export SLEPC_DIR=`pwd`
+	export LD_LIBRARY_PATH=$SLEPC_DIR/$PETSC_ARCH/lib:$LD_LIBRARY_PATH
+	./configure
+	make
+
+ Now let SLEPc check his own sanity: + 
+
+	make test
+
+ will self-check the serial (and MPI) implementation of SLEPc. +

+ +

+ Finally, you may want to put the two export + commands above into your ~/.bashrc + or ~/.cshrc files, with the first one replaced by + 

+
+	export SLEPC_DIR=/path/to/slepc-x-y-z
+
+

+
+ + + +
+ The deal.II Group + $Date$ +
+ +