Charm++ parallel programming system

[Roberto de Quadros Gomes <rqg.gomes AT gmail.com>]

Hi,

I was writing a load balancer strategy and I'd like hold some information about previous balance step, like a list. This list could be use for compute the variance of load of each vertex. But, I found no correlation between vertices index and mpi ranks.

Let me explain better...

I use a simple MPI code which only one rank (rank0) send data to another(rank 3) and I have others doing other things. Inside strategy , when I read the vector vertices in first time we suppose that vertex[1] represents rank0 and vertices[2] represents rank3. But in next call of LB, I don't know where is each rank. Its vertices indexes were changed. I noticed this because the vertices that received the data are changing but mpi code execution is ok.

Is there any way to do a correct rank association with vertice id?

Thanks