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Full Discussion: Newbie question
Top Forums Programming Newbie question Post 302203551 by spirtle on Monday 9th of June 2008 06:21:46 AM
Old 06-09-2008
Disclaimer: It's been a while since I have used parallel machines so I cannot remember details, but since nobody else has answered yet I'll have a go.

Now, your supercomputer might be set up differently, but every one I have ever used
uses a job submission system like PBS or NQS. You write a script with commands for the particular job submission system you are using (N.B. MPI is the parallel communications library, not a scripting language). You need to check whether this system allows you to subdivide a 32-node partition and run on each subdvision.

If this is impossible, and you cannot convince the admin to allow 16-node partitions, then you probably will have to change your program logic to run on 32-nodes, which means learning a little bit about parallel programming. Start by finding out where the magic number 16 comes from in your program, how the data is decomposed over the nodes, and then try to figure out how to generalise this for 32 (or any number) nodes.
 

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LEARN ABOUT DEBIAN

purity-ng

PURITY-NG(6)							   Games Manual 						      PURITY-NG(6)

NAME

       purity-ng - general purpose purity testing software

SYNOPSIS

       purity-ng [OPTION]...  list|FILE|TESTNAME

DESCRIPTION

       Purity  is  an  interactive purity test program with a simple, user interface and datafile format.  For each test, questions are printed to
       the your terminal, and you are prompted for an answer to the current question.  At a prompt, these are your choices:

	      y      Answer "yes" to the question.
	      n      Answer "no" to the question.
	      b      Backup  one  question, if you answered it incorrectly, or someone is watching you take the test, and you don't (or do) want to admit a different answer.
	      s      Print your current score on the test you are taking.
	      q      Quit the test, and print the current score.
	      ?      Print a help screen for the current prompt.

       At the end of the test, your score is printed out.  For most purity tests, lower scores denote more "experience" of the test material.

OPTIONS

       --version
	      print current version of purity-ng

       -h, --help
	      show the help message and exit

       -p     print the test without prompting for answers.

       -r     decrypt the test using the Rot 13 algorithm.

       To get a list of all purity tests available globally on your system, run purity-ng list.

AUTHORS

       purity was originally written by Eric Lechner in 1989.  purity-ng is a reimplementation of purity in Python for modern systems, written	by
       Simon Fondrie-Teitler and Luke Faraone.

       This manual page was written by Luke Faraone.

BUGS

       If you find bugs in the application, please report these to <https://bugs.launchpad.net/purity-ng> or to your distribution's distributor.

SEE ALSO

       purity(6)

       Running purity-ng format provides documentation about the datafile format.

       Additional documentation is available online at <http://packages.python.org/purity-ng>.

								  January 7, 2011						      PURITY-NG(6)
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