From B.Rowlingson at lancaster.ac.uk  Tue Jan  3 14:38:06 2006
From: B.Rowlingson at lancaster.ac.uk (Barry Rowlingson)
Date: Tue, 03 Jan 2006 13:38:06 +0000
Subject: [Rd] checkpointing
In-Reply-To: <43BA7C8E.5020109@jhsph.edu>
References: <1136241618.5636.10.camel@iron.psg.net>
	<43BA7C8E.5020109@jhsph.edu>
Message-ID: <43BA7E3E.1030306@lancaster.ac.uk>

Roger D. Peng wrote:
> One possibility is to write in some checkpointing into your objective function, 
> such as saving the current parameter values via 'save()' or 'dput()'.

  Has anyone successfully checkpointed and restarted R using any of the 
linux process checkpointing solutions I find when I google for 'linux 
process checkpointing'? I cant see why you'd bother implementing 
checkpointing within optim() if you can do it at the process level and 
hence in the middle of anything.

  Unless you're running Windows.

An example and some links here:

  http://www.cise.ufl.edu/~mfoster/research/uclik/uclik.htm

Barry



[Rd] checkpointing
Barry Rowlingson