Eric
I just tried xdmf for the first time in a couple of weeks an yes. It's
completely stuffed. I get a multiblock dataset with 800 blocks, each
being one timestep - instead of a single (or possibly multi-block)
dataset with time varying stuff.
I Can see looking at Jerry's changes on immediate probable cause, but
I'd better read through the email he sent a few days/week back and
review the changes. I see what Jerry has tried to do - create a
multiblock xdmf structure and just fetch the correct grid when you
request a timestep - thus giving us what we want. But there's a flaw in
the logic when the actual output dataset is generated - so that it
creates a multiblock one instead of the type givenm by the Nth (=time)
dataset inside it when we are fetching a time step which is not composite.
I need this to work, so I'll be looking at it soon. Ig Jerry reads this
before I fix it, then feel free to step in with the correct patch :)
JB
Hey all,
Maybe I'm behind on my Xdmf XML format again, but my files that a
month or two ago loaded a time series of unstructured grids now loads
into ParaView CVS as a Multi-block Dataset with one block for each
time step at each time point.
Let's say I have 1200 Polyvertex time steps in my file. I can (slowly)
step through the animation of my grid, but at each time point the
progress bar is cycling through a bunch of work, and each time point
lists (in the Information tab Data Hierarchy pane) a Multi-block
Dataset made up of 1200 Unstructured Grids. Clicking on each of these
blocks reveals that only the "current" time step block has Data Arrays
associated with the grid. So, at each time step of the animation, the
process seems very slow because 1200 blocks are being loaded, only one
of which actually has real data in it. (The Time pane at the bottom of
the Information tab always lists the correct time indices and values
for the whole series.)
Maybe this is just a change in the way time series are dealt with, but
it is much slower with my data sets, and it made more sense to me to
have each time step able to be represented as a simple grid, if
desired. (I have been using a self-modified vtkXdmfReader.cxx file for
a while, so I'm not sure when this multi-block issue would have
appeared.)
Thanks,
-Eric
------------------------------------------------------
Eric E Monson
Duke Visualization Technology Group
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John Biddiscombe, email:biddisco @ cscs.ch
http://www.cscs.ch/
CSCS, Swiss National Supercomputing Centre | Tel: +41 (91) 610.82.07
Via Cantonale, 6928 Manno, Switzerland | Fax: +41 (91) 610.82.82
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