NAME

PDL::CCS::IO::PETSc - PETSc-compatible I/O for PDL::CCS::Nd

SYNOPSIS

use PDL;
use PDL::CCS::Nd;
use PDL::CCS::IO::PETSc;

##-- sparse 2d matrix
$ccs = PDL::CCS::Nd->newFromWhich($which,$nzvals);

ccs_wpetsc($ccs,"ccs.petsc");      # write a sparse binary PETSc file
$ccs2 = ccs_rpetsc("ccs.petsc");   # read a sparse binary PETSc file

I/O Utilities

ccs_wpetsc

Write a 2d PDL::CCS::Nd matrix in PETSc sparse binary format.

ccs_wpetsc($ccs,$filename_or_fh)
ccs_wpetsc($ccs,$filename_or_fh,\%opts)

Options %opts:

class_id  => $int,   ##-- PETSc MAT_FILE_CLASSID (default=1211216; see petsc/include/petscmat.h)
pack_int  => $pack,  ##-- pack template for PETSc integers (default='N')
pack_val  => $pack,  ##-- pack template for PETSc values (default='d>')
ioblock   => $size,  ##-- I/O block size (default=8192)

ccs_rpetsc

REad a 2d PDL::CCS::Nd matrix from PETSc sparse binary format.

$ccs = ccs_rpetsc($filename_or_fh)
$ccs = ccs_rpetsc($filename_or_fh,\%opts)

Options %opts:

pack_int  => $pack,  ##-- pack template for PETSc integers (default='N')
pack_val  => $pack,  ##-- pack template for PETSc values (default='d>')
ioblock   => $size,  ##-- I/O block size (default=8192)
type      => $type,  ##-- value type to return (default: double)
sorted    => $bool,  ##-- assume input is lexicographically sorted (only if not transposted; default=do)
flags     => $flags, ##-- flags for new ccs object (default=$PDL::CCS::Nd::CCSND_FLAGS_DEFAULT)

ACKNOWLEDGEMENTS

Perl by Larry Wall.

PDL by Karl Glazebrook, Tuomas J. Lukka, Christian Soeller, and others.

AUTHOR

Bryan Jurish <moocow@cpan.org>

Copyright Policy

Copyright (C) 2015-2024, Bryan Jurish. All rights reserved.

This package is free software, and entirely without warranty. You may redistribute it and/or modify it under the same terms as Perl itself.

SEE ALSO

perl, PDL, PDL::CCS::Nd, PDL::CCS::IO::FastRaw, PDL::CCS::IO::FITS, PDL::CCS::IO::MatrixMarket, PDL::CCS::IO::LDAC, the PETSc binary matrix format definition at http://www.mcs.anl.gov/petsc/petsc-current/docs/manualpages/Mat/MatLoad.html, the PETSc homepage at http://www.mcs.anl.gov/petsc/. ...