Hey y'all - I'm trying to write a parallel reader for a user's structured grid and am having a problem with extents. I've included a plugin that demonstrates the problem - a little "importer" that hardwires a whole extent of 0,10 in each axis. In RequestInformation it calls:
outInfo->Set(vtkStreamingDemandDrivenPipeline::WHOLE_EXTENT(),this->Internals->extent,6); outInfo->Set(CAN_PRODUCE_SUB_EXTENT(), 1); and in RequestData it calls outInfo->Get(vtkStreamingDemandDrivenPipeline::UPDATE_EXTENT(),subext); vtkStructuredGrid *sgrid = vtkStructuredGrid::SafeDownCast(output); sgrid->SetExtent(subext); to get the update extent from the pipeline and set it onto the structured grid.. It then stuffs points and data to create a grid from -1 to 1 in each axis. When I run it on 2 processes, the result *looks* right, it fills the -1 to 1 space along each axis, there are the right number of cells and points, ProcessIdScalars shows two equal size partitions, but the extent is clearly not right - the wireframe and surface surface boundaries are incomplete and the extent shown in the Information tab is correct for only one of the two parts. So, what am I doing wrong? If anyone is interested, I uploaded the plugin code to: https://utexas.box.com/s/d6ef5kx4oxm1d205hbbo Gregory D. Abram, Ph.D. Research Engineering/Scientist Associate Texas Advanced Computing Center The University of Texas at Austin (512) 471-8196 [email protected]<mailto:[email protected]> [TACC Website]<https://www.tacc.utexas.edu/> Connect With TACC<https://www.tacc.utexas.edu/>
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