[Trilinos-Users] Zoltan repartition question

[Biddiscombe, John A.]

Generating a synthetic dataset on two cores, and then running a zoltan partition, I expected that using the 'repartition' option that the data would probably be redistributed in almost the exact same location as it started in.



However the original (left) and repartitioned (right) are divided along a different axis.



Should I expect this behaviour? Can I supply any hints to Zoltan to minimize the transfer of data? (I presume I've missed some flag somewhere)



I use ...
  Zoltan_Set_Param(zz, "LB_APPROACH", "REPARTITION");
  Zoltan_Set_Param(zz, "LB_METHOD",   "RCB");



Thanks



JB





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--

John Biddiscombe,                            email:biddisco @ cscs.ch

http://www.cscs.ch/

CSCS, Swiss National Supercomputing Centre  | Tel:  +41 (91) 610.82.07

Via Cantonale, 6928 Manno, Switzerland      | Fax:  +41 (91) 610.82.82




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