Re: [OMPI users] error depends on the number of processors

2010-03-24 Thread Jeff Squyres
On Mar 23, 2010, at 12:06 PM, Junwei Huang wrote: > I am still using LAM/MPI on an old cluster and wonder if I can get > some help from this mail list. Please upgrade to Open MPI if possible. :-) > Here is the problem. I am using a 18 > node cluster, each node has 2 CPU and each CPU supports up

[OMPI users] error depends on the number of processors

2010-03-23 Thread Junwei Huang
Hello, I am still using LAM/MPI on an old cluster and wonder if I can get some help from this mail list. Here is the problem. I am using a 18 node cluster, each node has 2 CPU and each CPU supports up to 2 threads. So I assume I can use 18*4 number of processors. As running the following code, an e