I fixed some of the issues (nearly infinite loops on the orted due to non initialized values), but not the one in rmaps. Clearly, the code in ramps_base_ranking.c (the while loop starting with "while (cnt < jdata->num_procs))" reach an infinite loop as soon as no node->procs exists, as there is no way to increase the cnt (this is the case on the original launch). Moreover, reading the comments in this file, FREAK me out, as apparently each mapper is allowed to have a different behavior…
george. On Nov 17, 2011, at 19:57 , Ralph Castain wrote: > I can't get it to fail, even with hostfile arguments. I'll try again in the > morning. > > On Nov 17, 2011, at 8:49 PM, George Bosilca wrote: > >> Maybe the issue is generated by how the hostile is specified. I used >> orte_default_hostfile= in my mca-params.conf. >> >> george. >> >> On Nov 17, 2011, at 19:17 , Ralph Castain wrote: >> >>> I'm still building on odin, but will check there again to see if I can >>> replicate - perhaps something didn't get committed cleanly. >>> >>>> >>>> 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. >>>>>> >>>>>> >>>>>> _______________________________________________ >>>>>> devel mailing list >>>>>> de...@open-mpi.org >>>>>> http://www.open-mpi.org/mailman/listinfo.cgi/devel >>>>> >>>>> >>>>> _______________________________________________ >>>>> devel mailing list >>>>> de...@open-mpi.org >>>>> http://www.open-mpi.org/mailman/listinfo.cgi/devel >>>> >>>> >>>> _______________________________________________ >>>> devel mailing list >>>> de...@open-mpi.org >>>> http://www.open-mpi.org/mailman/listinfo.cgi/devel >>> >>> >> >> >> _______________________________________________ >> devel mailing list >> de...@open-mpi.org >> http://www.open-mpi.org/mailman/listinfo.cgi/devel > > > _______________________________________________ > devel mailing list > de...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/devel
