Partitions with 0 elements

[blackbird]

Dear all,

I obtain a strange problem with the input appended. It is related to the number of partitions I use for the problem:

 6 Partitions: each Partition contains ~2200 elements, except partition 1 (626) and partition 4 (900)
10 Partitions: each Partition contains 1200-1400 elements, except partition 2 and 7, which have 0 elements
24 Partitions: each Partition contains ~650 elements, except partition 4, 6, 17 and 18, which have 0 elements

I am working with FEAP 8.4 with PETSC 3.3-p7

Is it a known problem? Is there a reason for this behaviour?

Best,
Christian

[FEAP_Admin]

You need a flat file before you partition.  So run your Input, then perform an OUTM command to get the flat file.  Use the flat file for the graph partitioning.