12-07-2008
Initial Experiments in Visualizing Fine-Grained Execution of Parallel Software Throug
HPL-2008-210
Initial Experiments in Visualizing Fine-Grained Execution of Parallel Software Through Cycle-Level Simulation - Strong, Rick; Mudigonda, Jayaram; Mogul, Jeffrey; Binkert, Nathan
Keyword(s): Visualization, Parallel programs, Simulation
Abstract: Programmers wishing to obtain the best possible performance from multi-threaded software on parallel hardware must often understand detailed architecture-level interactions. Visualizations based on execution traces are often useful in gaining such understanding. Previous visualization tools have use ...
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LEARN ABOUT DEBIAN
rdf::trine::serializer::ntriples::canonical
RDF::Trine::Serializer::NTriples::Canonical(3pm) User Contributed Perl Documentation RDF::Trine::Serializer::NTriples::Canonical(3pm)
NAME
RDF::Trine::Serializer::NTriples::Canonical - Canonical representation of an RDF model
VERSION
This document describes RDF::Trine::Serializer::NTriples::Canonical version 1.000
SYNOPSIS
use RDF::Trine::Serializer::NTriples::Canonical;
my $serializer = RDF::Trine::Serializer::NTriples->new( onfail=>'truncate' );
$serializer->serialize_model_to_file(FH, $model);
DESCRIPTION
This module produces a canonical string representation of an RDF graph. If the graph contains blank nodes, sometimes there is no canonical
representation that can be produced. The 'onfail' option allows you to decide what is done in those circumstances:
o truncate - drop problematic triples and only serialize a subgraph.
o append - append problematic triples to the end of graph. The result will be non-canonical. This is the default behaviour.
o space - As with 'append', but leave a blank line separating the canonical and non-canonical portions of the graph.
o die - cause a fatal error.
Other than the 'onfail' option, this package has exactly the same interface as RDF::Trine::Serializer::NTriples, providing
"serialize_model_to_file" and "serialize_model_to_string" methods.
This package will be considerably slower than the non-canonicalising serializer though, so should only be used for small to medium-sized
graphs, and only when you need canonicalisation (e.g. for side-by-side comparison of two graphs to check they're isomorphic; or creating a
canonical representation for digital signing).
METHODS
Beyond the methods documented below, this class inherits methods from the RDF::Trine::Serializer::NTriples class.
"new ( [ onfail => $rule ] )"
Returns a new Canonical N-Triples serializer object. If specified, the value of the 'onfail' argument dictates the handling of blank
nodes with no canonical representation. The allowable rule values are 'truncate', 'append', 'space', and 'die', and their respective
behaviour is described in "DESCRIPTION" above.
"serialize_model_to_file ( $fh, $model )"
Serializes the $model to canonical NTriples, printing the results to the supplied filehandle "<$fh">.
"serialize_model_to_string ( $model )"
Serializes the $model to canonical NTriples, returning the result as a string.
BUGS
Please report any bugs or feature requests to through the GitHub web interface at <https://github.com/kasei/perlrdf/issues>.
SEE ALSO
Signing RDF Graphs, Jeremey J Carroll, Digital Media Systems Laboratory, HB Laboratories Bristol. HPL-2003-142, 23 July 2003.
http://www.hpl.hp.com/techreports/2003/HPL-2003-142.pdf <http://www.hpl.hp.com/techreports/2003/HPL-2003-142.pdf>.
RDF::Trine, RDF::Trine::Serializer::NTriples.
<http://www.perlrdf.org/>.
AUTHOR
Toby Inkster, <tobyink@cpan.org>
COPYRIGHT AND LICENSE
Copyright (c) 2010 Toby Inkster
This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself, either Perl version 5.8.1 or,
at your option, any later version of Perl 5 you may have available.
perl v5.14.2 2012-06-29 RDF::Trine::Serializer::NTriples::Canonical(3pm)