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PetscTestingCygwinComplex64

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Jose E. Roman edited this page Jun 10, 2019 · 1 revision

Introduction

How to test BLOPEX under version 3.1 of Petsc on Cygwin in Windows 7, e.g., configured for 64bit integers and complex.

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

This creates files in directory petsc-3.1-p3. Switch to the Petsc directory and set PETSC_DIR environment variable.

>> cd petsc-3.1-p3
>> export PETSC_DIR=$PWD

Start the configuration process as follows to configure for complex scalars and 64bit integers. If you haven’t installed mpich2 on windows yet, use –download-mpich=1

>> ./config/configure.py  --with-cc=gcc --with-fc=gfortran --with-cxx=g++ --with-f-blas-lapack=/cygdrive/c/cygwin/lib --download-mpich=1 --download-blopex=1 --with-scalar-type=complex --with-clanguage=cxx --with-64-bit-indices

The option --download-mpich=1 takes very long time. If you do not need MPI, replace it the option --with-mpi=0

Or you can install mpich2 on Windows under Cygwin. The installation of mpich2 under Cygwin is the same as installation on Linux.

>> ./config/configure.py  --with-cc=mpicc --with-fc=mpif77 --with-cxx=mpicxx --with-f-blas-lapack=/cygdrive/c/cygwin/lib --with-mpich-dir=/cygdrive/c/cygwin/usr/local/bin/mpich2-install   --download-blopex=1 --with-scalar-type=complex --with-clanguage=cxx --with-64-bit-indice

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 complex scalars.

Configure for complex 64bit

driver

./driver -n_eigs 3 -itr 20

Eigenvalues computed

Eigenvalue lambda       Residual
2.43042158313016e-01    4.05315093619489e-09
4.79521039879644e-01    3.53297058589270e-09
4.79521039879666e-01    2.73360846146462e-09
16 iterations
Solution process, seconds: 2.723972e+00

driver_fiedler L-Matrix-complex_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-complex_64.petsc -n_eigs 2 -itr 10

Eigenvalues computed

Eigenvalue lambda       Residual
  3.24057229830860e-06    4.81233203447475e-10
  9.46022689880392e-06    5.55107151898088e-09

8 iterations
Solution process, seconds: 1.828479e+04
Final eigenvalues:
3.240572e-06
9.460227e-06

driver_fiedler DL-matrix-complex_64.petsc

./driver_fiedler -matrix DL-matrix-complex_64.petsc -n_eigs 3 -itr 20

Eigenvalues computed

Eigenvalue lambda       Residual
4.01981784120551e-05    1.09799496270908e-05
4.02631352413017e-05    1.10746798948064e-05
4.08036982755562e-05    8.67316255262878e-05
20 iterations
Solution process, seconds: 2.418034e+01
Final eigenvalues:
4.019818e-05
4.026314e-05
4.080370e-05

driver_fiedler test_complex_64.petsc

./driver_fiedler -matrix test_complex1_64.petsc -n_eigs 3 -tol 1e-5 -itr 20

Eigenvalues computed

Eigenvalue lambda       Residual
  9.31730863870398e-01    2.57142017316024e-03
  9.43321850680357e-01    1.68270918339062e-03
  9.46569432391362e-01    4.37718561208272e-03

20 iterations
Solution process, seconds: 1.856962e-01
Final eigenvalues:
9.317309e-01
9.433219e-01
9.465694e-01

./driver_fiedler -matrix test_complex2_64.petsc -n_eigs 3 -tol 1e-5 -itr 20

Eigenvalues computed

Eigenvalue lambda       Residual
 5.83900226796456e-01    6.86502217585543e-03
 5.92824487218932e-01    4.60860300516518e-03
 5.95744059452787e-01    8.66023275371204e-03
20 iterations
Solution process, seconds: 4.686357e+00
Final eigenvalues:
5.839002e-01
5.928245e-01
5.957441e-01

./driver_fiedler -matrix test_complex3_64.petsc -n_eigs 3 -tol 1e-5 -itr 20

Eigenvalue lambda       Residual
 9.61926171742241e+01    4.60108796113616e-02
 9.62485999275871e+01    1.38214270890162e-01
 9.62891435698207e+01    4.42759548368067e-02
20 iterations
Solution process, seconds: 1.097244e+00
Final eigenvalues:
9.619262e+01
9.624860e+01
9.628914e+01

driver_diag

./driver_diag -n_eigs 3 -tol 1e-6 -itr 20

Eigenvalues computed

Eigenvalue lambda       Residual
  1.20380409373538e+00    2.15412601685457e+00
  2.24153368254557e+00    2.47605811026978e+00
  3.26833543336572e+00    2.70123706781517e+00
20 iterations
Solution process, seconds: 2.263988e-01
Final eigenvalues:
1.203804e+00
2.241534e+00
3.268335e+00

driver_fortran

./ex2f_blopex

Eigenvalues computed

BLOPEX complete in  13 iterations
eval   1 is 0.205227064E-01 residual 0.3433E-07
eval   2 is 0.512014707E-01 residual 0.1338E-06
eval   3 is 0.512014707E-01 residual 0.1571E-06
eval   4 is 0.818802350E-01 residual 0.6035E-06
eval   5 is 0.101982840E+00 residual 0.7529E-06
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