I guess we could. I put it last so that you would always defer to an entity that knew better (eg, the RM).
-----Original Message----- From: Ethan Mallove [mailto:ethan.mall...@sun.com] Sent: Thursday, June 28, 2007 11:21 AM Eastern Standard Time To: General user list for the MPI Testing Tool Subject: Re: [MTT users] max_np on multi-processor nodes On Thu, Jun/28/2007 08:07:11AM, Jeff Squyres wrote: > On Jun 28, 2007, at 12:42 AM, Ethan Mallove wrote: > > > env_max_procs uses this order of precedence to get a > > "max_np". > > > > 1. Various resource managers > > 2. If a global hostfile was specified > > 3. If a global hostlist was specified > > 4. If a global max_np was specified > > > > Shouldn't 4 be at the top of the list? > > > I'm doing single node testing, but the fact that I have only > > one node listed in hostlist causes env_max_procs to return > > "1". I'd like to override the 1 value with the number of > > CPU's on the single node I'm running on. > > Is the :N notation not sufficient? > > # OMPI Core: if you would rather list the hosts individually on the > # mpirun command line, list hosts here delimited by whitespace (if you > # have a hostfile listed above, this value will be ignored!). Hosts > # can optionally be suffixed with ":num", where "num" is an integer > # indicating how many processes may be started on that machine (if not > # specified, ":1" is assumed). The sum of all of these values is used > # for &env_max_np() at run time. Example (4 uniprocessors): > # hostlist = node1 node2 node3 node4 > # Another example (4 2-way SMPs): > # hostlist = node1:2 node2:2 node3:2 node4:2 > # The "hostlist" value is ignored if you are running in a scheduled > # environment or if you have specified a hostfile. Oops. That's what I need. But re the above precedence list, if I wanted to oversubscribe using a hostlist and a manually overriden max_np param, wouldn't we still need to put item #4 at the top of the list? -Ethan > > -- > Jeff Squyres > Cisco Systems > > _______________________________________________ > mtt-users mailing list > mtt-us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/mtt-users _______________________________________________ mtt-users mailing list mtt-us...@open-mpi.org http://www.open-mpi.org/mailman/listinfo.cgi/mtt-users
