From mboxrd@z Thu Jan  1 00:00:00 1970
From: Tom Short <tshort@epri.com>
Subject: Re: [babel] exports, caching, remote execution
Date: Thu, 19 Aug 2010 20:59:16 +0000 (UTC)
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Eric Schulte <schulte.eric <at> gmail.com> writes:

> 
> Hi Austin,
> 
> Austin Frank <austin.frank <at> gmail.com> writes:
> 
> > Hey all--
> >
> > Two (hopefully quick) questions:
> >
> > 1) Does the exporter respect the :cache argument?  When I evaluate a
> >    buffer, I can tell that cached blocks are not re-run, as expected.
> >    When I export to \LaTeX or PDF, it seems that all blocks in the file
> >    are re-run.  Is there a way to force the exporter to respect caching?
> >
> 
> I believe the exporter does respect caching, the following minimal
> example worked (i.e. was not re-run) for me on export to html.  Could
> you provide an example that demonstrates the problem?

Eric, here's an example where the exporter does not respect caching. - Tom

#+BABEL: :session *R* :results output :exports both :cache yes

* A test of caching

#+begin_src R 
  cat("random result:", runif(1), "\n")
  Sys.sleep(2)
  alarm()
#+end_src 

#+results[b2549fac8a1ec2923ae289d47ce55fb2853dd1de]:
: random result: 0.2799064

#+begin_src R 
  cat("random result:", runif(1), "\n")
  Sys.sleep(2)
  alarm()
#+end_src 

#+results[b2549fac8a1ec2923ae289d47ce55fb2853dd1de]:
: random result: 0.1625634

** cache on export
do we export cached blocks

#+begin_src emacs-lisp :cache yes :exports results
  (random)
#+end_src

#+results[46632b4fe2e3a23e847953c95adcba58c270b381]:
: 490528137