Non-uniform 2D mesh questions

yaron at oak-research.com yaron at oak-research.com
Mon Jan 29 22:35:35 CST 2007


Barry-
  Yes, each block is a rectangular portion  of the domain. Not so small
though (more like 100 x 100 nodes)

  Yaron


  	-------Original Message-------
  From: Barry Smith
  Subject: Re: Non-uniform 2D mesh questions
  Sent: 29 Jan '07 19:40


   Yaron,

   Is each one of these "blocks" a small rectangular part of the
  domain (like a 4 by 5 set of nodes)? I don't understand what you
  want to do.

   Barry


  On Mon, 29 Jan 2007, [LINK:
http://webmail.oak-research.com/compose.php?to=yaron@oak-research.com]
yaron at oak-research.com wrote:

  > Hi all
  > I have a laplace-type problem that's physically built from repeating
  > instances of the same block.
  > I'm creaing matrices for the individual blocks, and I'd like to reuse
  > the individual block matrices in order to compose the complete
problem.
  > (i.e if there 10K instances of 20 blocks, I'd like to build 20
matrices,
  > then use them to compose the large complete matrix)
  > Is a 2D DA the right object to do that? And if so, where can I find a
  > small example of building the DA object in parallel, then using the
  > different (for every instance) mappings of local nodes to global nodes
in
  > order to build the complete matrix?
  >
  >
  > Thanks
  > Yaron
  >
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