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.. -*- rst -*-
Copyright (c) 2022-2023 Nanook Consulting. All rights reserved.
Copyright (c) 2023 Jeffrey M. Squyres. All rights reserved.
$COPYRIGHT$
Additional copyrights may follow
$HEADER$
.. The following line is included so that Sphinx won't complain
about this file not being directly included in some toctree
Listing Hosts on the Command Line
=================================
Many PRRTE commands accept the ``--host`` CLI parameter.
``--host`` accepts a comma-delimited list of tokens of the form:
.. code::
host[:slots]
The ``host`` token can be either:
* A name that resolves to an IP address, or
* An IP address
.. note:: The names and/or IP addresses of hosts are *only* used for
identifying the target host on which to launch. They are
*not* used for determining which network interfaces are used
by applications (e.g., MPI or other network-based
applications).
For network-based applications, consult their documentation
for how to specify which network interfaces are used.
The optional integer ``:slots`` parameter tells PRRTE the maximum
number of slots to use on that host (see this section on definition
of the term ``slot`` for a description of what a "slot" is).
For example:
.. code::
prterun --host node1:10,node2,node3:5 ...
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