I have a fresh checkout. In your example where are your hosts coming from? How 
do you specify the hostile?

  george.

On Nov 17, 2011, at 19:06 , Ralph Castain wrote:

> Hmmm...well, things seem to work just fine for me:
> 
> [rhc@odin ~/ompi-hwloc]$ mpirun -np 2 -bynode -mca plm rsh hostname
> odin090.cs.indiana.edu
> odin091.cs.indiana.edu
> 
> [rhc@odin mpi]$ mpirun -np 2 -bynode -mca plm rsh ./hello_nodename
> Hello, World, I am 1 of 2 on host odin091.cs.indiana.edu from app number 0 
> universe size 8
> Hello, World, I am 0 of 2 on host odin090.cs.indiana.edu from app number 0 
> universe size 8
> 
> 
> I'll get a fresh checkout and see if I can replicate from that...
> 
> On Nov 17, 2011, at 7:42 PM, George Bosilca wrote:
> 
>> I guess I reach one of these corner-cases that didn't got tested. I can't 
>> start any apps (not even a hostname) after this commit using the rsh PLM (as 
>> soon as I add a hostile). The mpirun is blocked in an infinite loop (after 
>> it spawned the daemons) in orte_rmaps_base_compute_vpids. Attaching with gdb 
>> indicates that cnt is never incremented, thus the mpirun is stuck forever in 
>> the while loop at line 397.
>> 
>> I used "mpirun -np 2 --bynode ./tp_lb_ub_ng" to start my application, and I 
>> have a machine file containing two nodes:
>> 
>> node01 slots=8
>> node02 slots=8
>> 
>> In addition CTRL+C seems to be broken …
>> 
>> george.
>> 
>> Begin forwarded message:
>> 
>>> Author: rhc
>>> Date: 2011-11-14 22:40:11 EST (Mon, 14 Nov 2011)
>>> New Revision: 25476
>>> URL: https://svn.open-mpi.org/trac/ompi/changeset/25476
>>> 
>>> Log:
>>> At long last, the fabled revision to the affinity system has arrived. A 
>>> more detailed explanation of how this all works will be presented here:
>>> 
>>> https://svn.open-mpi.org/trac/ompi/wiki/ProcessPlacement
>>> 
>>> The wiki page is incomplete at the moment, but I hope to complete it over 
>>> the next few days. I will provide updates on the devel list. As the wiki 
>>> page states, the default and most commonly used options remain unchanged 
>>> (except as noted below). New, esoteric and complex options have been added, 
>>> but unless you are a true masochist, you are unlikely to use many of them 
>>> beyond perhaps an initial curiosity-motivated experimentation.
>>> 
>>> In a nutshell, this commit revamps the map/rank/bind procedure to take into 
>>> account topology info on the compute nodes. I have, for the most part, 
>>> preserved the default behaviors, with three notable exceptions:
>>> 
>>> 1. I have at long last bowed my head in submission to the system admin's of 
>>> managed clusters. For years, they have complained about our default of 
>>> allowing users to oversubscribe nodes - i.e., to run more processes on a 
>>> node than allocated slots. Accordingly, I have modified the default 
>>> behavior: if you are running off of hostfile/dash-host allocated nodes, 
>>> then the default is to allow oversubscription. If you are running off of 
>>> RM-allocated nodes, then the default is to NOT allow oversubscription. 
>>> Flags to override these behaviors are provided, so this only affects the 
>>> default behavior.
>>> 
>>> 2. both cpus/rank and stride have been removed. The latter was demanded by 
>>> those who didn't understand the purpose behind it - and I agreed as the 
>>> users who requested it are no longer using it. The former was removed 
>>> temporarily pending implementation.
>>> 
>>> 3. vm launch is now the sole method for starting OMPI. It was just too 
>>> darned hard to maintain multiple launch procedures - maybe someday, 
>>> provided someone can demonstrate a reason to do so.
>>> 
>>> As Jeff stated, it is impossible to fully test a change of this size. I 
>>> have tested it on Linux and Mac, covering all the default and simple 
>>> options, singletons, and comm_spawn. That said, I'm sure others will find 
>>> problems, so I'll be watching MTT results until this stabilizes.
>> 
>> 
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> 
> 
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