Distribution of vertices among processes
Hello,
I have two questions related to the distribution of vertices among processes prior to calling a partitioning function.
- When using ParMETIS_V3_AdaptiveRepart (), is there a performance difference between the Coupled and the Uncoupled configuration? How much?
- Let's say I'm assigning all vertices to Process 0 when using ParMETIS_V3_PartKway (). Is it going to perform like the serial METIS, or is there still a benefit to using several processes?
Thank you,
Louis
Submitted by Louis on Thu, 2014-02-20 23:11
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RE: Here are some answers: 1.
Here are some answers:
1. There should not be a huge difference between coupled and un-coupled in terms of performance. If you have observed otherwise, let me know.
2. If you start with having all of them on a single node, it will perform like serial metis. Not a good idea.
RE: Ok, thank you. Louis.
Ok, thank you.
Louis.