Re: [OMPI users] one more problem with process bindings on openmpi-1.6.2

2012-10-03 Thread Ralph Castain
On Oct 3, 2012, at 8:40 AM, Siegmar Gross wrote: > Hi, > >> As I said, in the absence of a hostfile, -host assigns ONE slot for >> each time a host is named. So the equivalent hostfile would have >> "slots=1" to create the same pattern as your -host cmd line. > > That would mean that a hostfi

Re: [OMPI users] one more problem with process bindings on openmpi-1.6.2

2012-10-03 Thread Siegmar Gross
Hi, > As I said, in the absence of a hostfile, -host assigns ONE slot for > each time a host is named. So the equivalent hostfile would have > "slots=1" to create the same pattern as your -host cmd line. That would mean that a hostfile has nothing to do with the underlying hardware and that it wo

Re: [OMPI users] one more problem with process bindings on openmpi-1.6.2

2012-10-03 Thread Ralph Castain
As I said, in the absence of a hostfile, -host assigns ONE slot for each time a host is named. So the equivalent hostfile would have "slots=1" to create the same pattern as your -host cmd line. On Oct 3, 2012, at 7:12 AM, Siegmar Gross wrote: > Hi, > > I thought that "slot" is the smallest

Re: [OMPI users] one more problem with process bindings on openmpi-1.6.2

2012-10-03 Thread Siegmar Gross
Hi, I thought that "slot" is the smallest manageable entity so that I must set "slot=4" for a dual-processor dual-core machine with one hardware-thread per core. Today I learned about the new keyword "sockets" for a hostfile (I didn't find it in "man orte_hosts"). How would I specify a system with

Re: [OMPI users] one more problem with process bindings on openmpi-1.6.2

2012-10-03 Thread Ralph Castain
On Oct 3, 2012, at 6:19 AM, Siegmar Gross wrote: > Hi, > > I recognized another problem with procecss bindings. The command > works, if I use "-host" and it breaks, if I use "-hostfile" with > the same machines. > > tyr fd1026 178 mpiexec -report-bindings -host sunpc0,sunpc1 -np 4 \ > -cpus