Solver NOTES - Revision history

Jpye at 08:15, 29 March 2011

2011-03-29T08:15:55Z

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Jpye at 08:15, 29 March 2011

2011-03-29T08:15:44Z

← Older revision		Revision as of 08:15, 29 March 2011
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			''Using solver NOTES is no longer the preferred approach to solving this problem. We now suggest you use the [[OPTION]] command, even though it is still somewhat experimental.''

	Solver NOTES are a special kind of [[NOTES]] in ASCEND that allow you to specify parameters for use in the solver when running a particular model. This uses the [[ExtPy]] mechanism, which isn't yet considered stable.		Solver NOTES are a special kind of [[NOTES]] in ASCEND that allow you to specify parameters for use in the solver when running a particular model. This uses the [[ExtPy]] mechanism, which isn't yet considered stable.
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	To use solver notes, try		To use solver notes, try

	<source lang="a4c">IMPORT ~~"~~johnpye/solvernotes~~"~~;		<source lang="a4c">IMPORT "johnpye/solvernotes";

	ADD NOTES IN mymodel;		ADD NOTES IN mymodel;

Jpye at 08:14, 29 March 2011

2011-03-29T08:14:22Z

← Older revision		Revision as of 08:14, 29 March 2011
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	~~<div class="notice metadata" id="~~stub">''This article is a '''stub'''. You can help out by <span class="plainlinks">[http://ascendwiki.cheme.cmu.edu/index.php?title=Solver_NOTES&action=edit expanding it]</span>. ''</div><div class="pageexperimental">''This page documents an '''experimental~~''' feature. You can help out by '''testing it''' and <span class="plainlinks">[http://ascendwiki.cheme.cmu.edu/index.php?title=Solver_NOTES&action=edit recording]</span> your experiences.''</div>~~		{{stub}}
			{{experimental}}

	Solver NOTES are a special kind of [[NOTES]] in ASCEND that allow you to specify parameters for use in the solver when running a particular model. This uses the [[ExtPy]] mechanism, which isn't yet considered stable.		Solver NOTES are a special kind of [[NOTES]] in ASCEND that allow you to specify parameters for use in the solver when running a particular model. This uses the [[ExtPy]] mechanism, which isn't yet considered stable.
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	The above specifies that the preferred solver for the model <tt>mymodel</tt> is [[QRSlv]], then sets the <tt>iterationlimit</tt> and <tt>singtol</tt> parameters when using that solver. The external method, <tt>solvernotes</tt> must be <tt>[[IMPORT]]</tt>ed, and called using the <tt>[[EXTERNAL]]</tt> statement.		The above specifies that the preferred solver for the model <tt>mymodel</tt> is [[QRSlv]], then sets the <tt>iterationlimit</tt> and <tt>singtol</tt> parameters when using that solver. The external method, <tt>solvernotes</tt> must be <tt>[[IMPORT]]</tt>ed, and called using the <tt>[[EXTERNAL]]</tt> statement.





	~~[[Category:Stubs]]~~
	~~[[Category:Experimental]]~~
	[[Category:Documentation]]		[[Category:Documentation]]

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2010-05-13T13:48:01Z

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<div class="notice metadata" id="stub">''This article is a '''stub'''. You can help out by <span class="plainlinks">[http://ascendwiki.cheme.cmu.edu/index.php?title=Solver_NOTES&action=edit expanding it]</span>. ''</div><div class="pageexperimental">''This page documents an '''experimental''' feature. You can help out by '''testing it''' and <span class="plainlinks">[http://ascendwiki.cheme.cmu.edu/index.php?title=Solver_NOTES&action=edit recording]</span> your experiences.''</div>

Solver NOTES are a special kind of [[NOTES]] in ASCEND that allow you to specify parameters for use in the solver when running a particular model. This uses the [[ExtPy]] mechanism, which isn't yet considered stable.

To use solver notes, try

<source lang="a4c">IMPORT "johnpye/solvernotes";

ADD NOTES IN mymodel;
'solver' name {QRSlv}
'QRSlv' iterationlimit {50}

'QRSlv' singtol {1e-10}
END NOTES;

MODEL mymodel;

x, y IS_A solver_var;
x = y^2;

METHODS
METHOD on_load;
EXTERNAL solvernotes(SELF);
END on_load;

END mymodel;</source>

The above specifies that the preferred solver for the model <tt>mymodel</tt> is [[QRSlv]], then sets the <tt>iterationlimit</tt> and <tt>singtol</tt> parameters when using that solver. The external method, <tt>solvernotes</tt> must be <tt>[[IMPORT]]</tt>ed, and called using the <tt>[[EXTERNAL]]</tt> statement.

[[Category:Stubs]]
[[Category:Experimental]]
[[Category:Documentation]]