Re: [Libmesh-devel] Partition pictures

2013-11-07 Thread Cody Permann
The Hilbert one isn't too bad, occasionally there are a few disconnected regions. In the 15 proc graph there is one disconnected region in the lower left quadrant. On Thu, Nov 7, 2013 at 2:51 PM, Kirk, Benjamin (JSC-EG311) < benjamin.k...@nasa.gov> wrote: > I think the Morton ordering is not

Re: [Libmesh-devel] Partition pictures

2013-11-07 Thread Kirk, Benjamin (JSC-EG311)
I think the Morton ordering is not amenable to just linear cutting, which is essentially what we're doing. http://en.wikipedia.org/wiki/Z-order_curve Maybe we should be splicing it up some other way? I'm not sure I see anything *wrong* with the hilbert result, but some are definitely worse than

[Libmesh-devel] Partition pictures

2013-11-07 Thread Cody Permann
I'm seeing some less than optimal partitioning for several processor counts using both Metis and Hilbert SFC. Also from what I can tell, Morton SFC is completely broken. I realize that I'm splitting a small mesh among a lot of processors, but the behavior is still pretty bad. The following pictu