Dear OpenMPI,
I'm transitioning from LAM-MPI to OpenMPI and have just compiled OMPI
1.0.2 on OS X server 10.4.6. I'm using gcc 3.3 and XLF (both f77 and
f90), and I'm using ssh to run the jobs. My cluster is all G5 dual
2GHz+ xserves, and I am using both ethernet ports for communication.
es 50% slower than the LAM-MPI. I'm
running over TCP and using SSH.
Does anyone expect OpenMPI to be slower than LAM-MPI under these
conditions?
Lee Peterson
On Apr 10, 2006, at 9:57 PM, Lee D. Peterson wrote:
Dear OpenMPI,
I'm transitioning from LAM-MPI to OpenMPI and have just
erformance, I ran the HPL benchmark again and see
typically 85% to 90% of the LAM-MPI speed, provided the problem size
isn't too small.
Lee
On Apr 16, 2006, at 12:21 PM, Brian Barrett wrote:
On Apr 14, 2006, at 9:33 AM, Lee D. Peterson wrote:
This problem went away yesterday. There w
Brian,
The firewires are all inactive. The only difference from ipconfig is
that the cluster head has a ppp0 defined because of a VPN I'm using.
I tried -mac btl_tcp_if_exclude ppp0, but that didn't work.
So I logged off the VPN, and now ifconfig -a on the cluster head does
not show the p
