I am hoping to use PV to visualize a structured grid DNS with ~900M cells. As a prelude I’m trying to get client/server mode working and performant on my local cluster and… there are… some performance problems to put it mildly.
The cluster should not be presenting a problem (100Gbps interconnect, 14 cores and 128GB ram per node, GPFS filesystem) and my laptop’s connection ought to be adequate (1Gbps, 0.3msec ping to head node).
However even with a far smaller test dataset (30M cells) performance with small (1/2/4) and somewhat larger (8/16) numbers of pvservers is far worse than literally just single-threaded paraview accessing the same data on my laptop: It takes nearly two full minutes of wait to (1) open (2) ‘apply’ (3) generate a contour and 1-2 minutes to change frames.
What format/formats work well for larger datasets (suppose ‘larger’ is taken to mean >1GB of binary data per frame)? I have can currently output both ensight gold directly, or use the vtkwrite Matlab utility to generate .vtk files. Is there any giveaway test I can take to our admins to diagnose the problem?
Thanks in advance,