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Introduction
How to test BLOPEX under version 3.1 of Petsc on Cygwin in Windows 7, e.g., configured for 64bit integers and double.
Setup Petsc
To use blopex_solve_double or blopex_solve_complex using Petsc first download Petsc at http://ftp.mcs.anl.gov/pub/petsc/release-snapshots/petsc-lite-3.1-p3.tar.gz To install files issue command:
>> tar -zxvf petsc-lite-3.1-p3.tar.gz
>> cd petsc-3.1-p3 >> export PETSC_DIR=$PWD
>> ./config/configure. --with-f-blas-lapack=/cygdrive/c/cygwin/lib --with –mpich-dir=/cygdrive/c/cygwin/usr/local/bin/mpich2-install --download-blopex=1 --with-64-bit-indices
>> ./config/configure. --with-f-blas-lapack=/cygdrive/c/cygwin/lib --download-mpich=1 --download-blopex=1 --with-64-bit-indices
After configuration is finished issue the command
>> make all >> make test
Setup blopex petsc drivers
Now create executables for the blopex drivers
>> cd src/contrib/blopex/driver >> make driver >> cd ../driver_fiedler >> make driver_fiedler >> cd ../driver_diag >> make driver_diag >> cd ../driver_fortran >> make ex2f_blopex
Execution of Tests
See wiki PetscTestingLinux for descriptions of test programs. There are 4 test drivers located in subdirectories of ../blopex: driver, driver_fiedler driver_diag, and driver_fortran.
Test Results
We document here tests for configuration double and 64bit
Configure for double 64bit
driver
./driver -n_eigs 3 -itr 20
Eigenvalues computed
Eigenvalue lambda Residual 2.43042158313016e-01 2.06075489797594e-09 4.79521039879647e-01 4.41011822871539e-09 4.79521039879649e-01 7.25866549368105e-09 16 iterations Solution process, seconds: 2.569786e-01
driver_fiedler L-matrix-double_64.petsc
driver_fiedler accepts as input matrices in Petsc format. These matrices must be setup for either 32bit or 64bit arithematic, ral or complex. The test matrices are setup for double (real) or complex and for 32bit or 64bit. The 64bit version have a file name containing "64"`. All our matrices for testing can be downloaded from http://code.google.com/p/blopex/downloads/detail?name=blopex_petsc_test.tar.gz
./driver_fiedler -matrix L-matrix-double_64.petsc -n_eigs 3 -itr 20
Eigenvalues computed
Eigenvalue lambda Residual 3.24057229835491e-06 1.08379498003101e-09 9.46022689455523e-06 2.33567983484665e-09 2.01380536843911e-05 4.39095965249420e-09 14 iterations Solution process, seconds: 5.487032e+02 Final eigenvalues: 3.240572e-06 9.460227e-06 2.013805e-05
driver_fiedler DL-matrix-double_64.petsc
./driver_fiedler -matrix DL-matrix-double_64.petsc -n_eigs 3 -itr 20
Eigenvalues computed
Eigenvalue lambda Residual 4.02544378184729e-05 6.39420026735611e-06 4.03050265235268e-05 2.16914540699202e-05 4.06041171454049e-05 4.82871036680101e-05 20 iterations Solution process, seconds: 2.433026e+00 Final eigenvalues: 4.025444e-05 4.030503e-05 4.060412e-05
driver_diag
./driver_diag -n_eigs 3 -tol 1e-6 -itr 20
Eigenvalues computed
Eigenvalue lambda Residual 1.20073961755945e+00 2.12082900660306e+00 2.23691202511820e+00 2.42856881925111e+00 3.26199055636483e+00 2.63494491986278e+00 20 iterations Solution process, seconds: 2.580865e-02 Final eigenvalues: -9.290899e+260 -9.290899e+260 -9.290899e+260
driver_fortran
./ex2f_blopex
Solution:
BLOPEX complete in 12 iterations eval 1 is 0.205227064E-01 residual 0.1767E-07 eval 2 is 0.512014707E-01 residual 0.4715E-07 eval 3 is 0.512014707E-01 residual 0.2178E-06 eval 4 is 0.818802350E-01 residual 0.8697E-06 eval 5 is 0.101982840E+00 residual 0.4591E-06
Updated