/usr/share/doc/python-netcdf/examples/master.py is in python-netcdf 2.9.4-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 | # Example for distributed computing using a master-slave setup.
# You need Pyro (pyro.sourceforge.net) to run this example.
#
# 1) Type "ns" in a shell window to start the Pyro name server.
# 2) Type "python master.py" in a second shell window to start
# the master process.
# 3) Type "task_manager slave demo" in a third shell window
# to start one slave process.
#
# You can run as many slaves as you want (though for this trivial example,
# the first slave will do all the work before you have time to start a
# second one), and you can run them on any machine on the same local
# network as the one that runs the master process.
#
# See the Pyro manual for other setups, e.g. running slaves on remote
# machines connected to the Internet.
#
# Also see master_slave_demo.py to see how both master and slave can be
# combined within a single script, which is more convenient for short
# scripts.
#
from Scientific.DistributedComputing.MasterSlave import \
initializeMasterProcess, TaskRaisedException
tasks = initializeMasterProcess("demo", slave_script="slave.py")
# Do the master's work
for i in range(5):
# For i==0 this raises an exception
task_id = tasks.requestTask("sqrt", float(i-1))
for i in range(5):
try:
task_id, tag, result = tasks.retrieveResult("sqrt")
print result
except TaskRaisedException, e:
print "Task %s raised %s" % (e.task_id, str(e.exception))
print e.traceback
|