-l

# line labels by MPI rank

-bnr

# MPICH1 compatibility mode

-machinefile

# file mapping procs to machines

-s <spec>

# direct stdin to "all" or 1,2 or 2-4,6

-1

# override default of trying 1st proc locally

-ifhn

# network interface to use locally

-tv

# run procs under totalview (must be installed)

-tvsu

# totalview startup only

-gdb

# run procs under gdb

-m

# merge output lines (default with gdb)

-a

# means assign this alias to the job

-ecfn

# output_xml_exit_codes_filename

-recvtimeout <integer_val>

# timeout for recvs to fail (e.g. from mpd daemon)

-g<local arg name>

# global version of local arg (below) and local args may be

-n <n> or -np <n>

# number of processes to start

-wdir <dirname>

# working directory to start in

-umask <umask>

# umask for remote process

-path <dirname>

# place to look for executables

-host <hostname>

# host to start on

-soft <spec>

# modifier of -n value

-arch <arch>

# arch type to start on (not implemented)

-envall

# pass all env vars in current environment

-envnone

# pass no env vars -envlist <list of env var names> # pass current values of these vars

-env <name> <value>

# pass this value of this env var mpiexec [global args] [local args] executable args : [local args] executable...

mpiexec -n 1 -host foo master : -n 4 -host mysmp slave

Convert a time in seconds since the Epoch to a string in local time. This is equivalent to asctime(localtime(seconds)). When the time tuple is not present, current time as returned by localtime() is used.

# NOTE: stdin is supposed to be slow, low-volume.

We read it all here (as it

# appears on the fd) and send it immediately to the receivers.

If the user # redirects a "large" file (perhaps as small as 5k) into us, we will send it

# all out right away.

This can cause things to hang on the remote (recvr) side. # We do not wait to read here until the recvrs read because there may be several # recvrs and they may read at different speeds/times.

Return the current time in seconds since the Epoch. Fractions of a second may be present if the system clock provides them.