A small clarification: -l (due to the convenience in mpd) is a standard argument supported by the cmnargs.c , not just mpd, and were documented in http://wiki.mcs.anl.gov/mpich2/index.php/Proposed_MPIEXEC_Extensions . Bill On Sep 29, 2010, at 1:05 PM, mpich2 wrote:

#1107: -mpiexec.hydra: would like to see -l and -tv options ------------------------------------- +-------------------------------------- Reporter: georgv@… | Owner: balaji Type: feature | Status: closed Priority: major | Milestone: mpich2-1.3 Component: mpich2 | Resolution: fixed Keywords: mpiexec.hydra debugging | ------------------------------------- +-------------------------------------- Changes (by balaji):

* status: reopened => closed * resolution: => fixed

Comment:

The actual option is "-prepend-rank" in Hydra (you should be able to see if with mpiexec -help). "-l" was only added for users familiar with mpd's style.

"-a" is not an Hydra option -- it's a totalview parameter. Yes, it looks like we missed out on documenting this on the "Using Hydra" wiki. I've added it now: http://wiki.mcs.anl.gov/mpich2/index.php/Using_the_Hydra_Process_Manager#Tot...

-- Ticket URL: <http://trac.mcs.anl.gov/projects/mpich2/ticket/1107#comment:4

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mpich2 <http://www.mcs.anl.gov/research/projects/mpich2> MPICH2 is a high-performance and widely portable implementation of MPI

William Gropp Deputy Director for Research Institute for Advanced Computing Applications and Technologies Paul and Cynthia Saylor Professor of Computer Science University of Illinois Urbana-Champaign