[Purushothama]

Dear StarCD colleagues,

I am using starcd 3.26 for fuel cell simulation. We have cluster facility with 48GB server and 8 nodes of 8GB memory each. When I do simulation of large-scale geometry having cells about 4 million with 32 processors, it takes about 4 minutes/iteration. This is too much. I issued the command,

star -dp -mpi=hp -decompmeth=s node0,4 node1,4 etc..

I have also tried with 8 processors, but the time taken per iteration is almost same. I use ufiles and CG solving method.

Is there anyone know how I can reduce simulation time? I have tried with AMG method, but found it is not working well with my ufiles.