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use pyzmq tools where appropriate...
use pyzmq tools where appropriate ZMQStream is the right object to use for event-driven handling of messages, but instead we chose to rewrite half of it in KernelManager. This removes most of the duplicate code, in favor of using ZMQStream. also use the pyzmq install() function for using pyzmq with tornado, instead of manually pasting its contents in notebook app.

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ipcluster.1
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.TH IPCLUSTER 1 "July 15, 2011" "" ""
.SH NAME
\fBipcluster \- IPython parallel computing cluster control tool
.SH SYNOPSIS
.nf
.fam C
\fBipcluster\fP {\fmpiexec,local,mpirun,pbs,ssh\fP} [\fIoptions\fP]
.fam T
.fi
.SH DESCRIPTION
ipcluster is a control tool for IPython's parallel computing functions.
IPython cluster startup. This starts a controller and engines using various
approaches. Use the IPYTHON_DIR environment variable to change your IPython
directory from the default of ~/.ipython or ~/.config/ipython. The log and security
subdirectories of your IPython directory will be used by this script for log
files and security files.
.SH POSITIONAL ARGUMENTS
The first positional argument should be one of: {start, stop, engines},
which are the available subcommands.
For detailed help on each, type "ipcluster CMD \-\-help". Briefly:
start start an IPython cluster
stop stop a running IPython cluster
engines add a number of engines to a running cluster
.SH OPTIONS
.TP
.B
\-h, \-\-help
show help message and exit
.SH EXAMPLE
ipcluster start \-\-n=4
This command will start 4 IPython engines on the local computer.
.SH SEE ALSO
.BR ipython(1),
.BR ipcontroller(1),
.BR ipengine(1)
.br
.SH AUTHOR
\fBipcluster\fP is a tool that ships with IPython, created by
the IPython Development Team.
.PP
This manual page was written by Stephan Peijnik <debian@sp.or.at>,
for the Debian project (but may be used by others). Modified by Fernando Perez
<Fernando.Perez@berkeley.edu> for inclusion in IPython.