Hi Ken, Thanks for the input.
There is an explicit check in the writer to see if there are any points before writing out point data. I took that check out and am hitting a NetCDF error that the "num_nodes" dimension isn't specified. It will probably take a bit of investigating to fix this but at least you've helped me go down the correct path. Thanks, Andy On Fri, Jan 13, 2017 at 2:44 PM, Moreland, Kenneth <[email protected]> wrote: > Andy, > > > > That sounds like a bug in our Exodus writer to me. I’m not positive, but > I’m pretty sure that you can specify in Exodus point and cell arrays if no > grid points or cells exist. The writer is probably making a shortcut and > skipping that if there is no actual data. > > > > -Ken > > > > *From:* ParaView [mailto:[email protected]] *On Behalf Of *Andy > Bauer > *Sent:* Friday, January 13, 2017 12:00 PM > *To:* [email protected] > *Subject:* [EXTERNAL] [Paraview] exodusII reader & writer in parallel > > > > Hi, > > I'm trying out the ExodusII writer in parallel and had some questions > about how it should work in general when there isn't any data on process 0. > Currently what happens in ParaView is that a file for each process is > written out but the file corresponding to process 0 doesn't have any grid > information or field data (an example is attached). When I read this back > into ParaView using the built-in server (i.e. in serial) the ExodusII > reader gets the proper points and cells but no field data is read in. > > So my question is this, does the ExodusII file format allow specifying > point and cell arrays in a file if no grid points or cells exist? > > I'm tempted to fix this issue by modifying the reader to properly pass the > field data information to process 0 from another one that has data but > wanted to get the community's thoughts on this before I go through the > implementation. The alternative would be to modify the writer to include > point and cell data information and that's probably a better solution, > assuming that the ExodusII format allows for that. > > Thanks, > > Andy > > ps. Attached is a sample set of ExodusII files that doesn't have any data > on parallel.ex2.4.0 in case someone wants to play around with it. >
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