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openmpi/orte/mca/rmaps/load_balance/help-orte-rmaps-lb.txt
Ralph Castain 1dc12046f1 Modify the OMPI paffinity and mapping system to support socket-level mapping and binding. Mostly refactors existing code, with modifications to the odls_default module to support the new capabilities.
Adds several new mpirun options:

* -bysocket - assign ranks on a node by socket. Effectively load balances the procs assigned to a node across the available sockets. Note that ranks can still be bound to a specific core within the socket, or to the entire socket - the mapping is independent of the binding.

* -bind-to-socket - bind each rank to all the cores on the socket to which they are assigned.

* -bind-to-core - currently the default behavior (maintained from prior default)

* -npersocket N - launch N procs for every socket on a node. Note that this implies we know how many sockets are on a node. Mpirun will determine its local values. These can be overridden by provided values, either via MCA param or in a hostfile

Similar features/options are provided at the board level for multi-board nodes.

Documentation to follow...

This commit was SVN r21791.
2009-08-11 02:51:27 +00:00

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2.4 KiB
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# -*- text -*-
#
# Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
# University Research and Technology
# Corporation. All rights reserved.
# Copyright (c) 2004-2005 The University of Tennessee and The University
# of Tennessee Research Foundation. All rights
# reserved.
# Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
# University of Stuttgart. All rights reserved.
# Copyright (c) 2004-2005 The Regents of the University of California.
# All rights reserved.
# $COPYRIGHT$
#
# Additional copyrights may follow
#
# $HEADER$
#
# This is the US/English general help file for Open RTE's orterun.
#
[orte-rmaps-rr:alloc-error]
There are not enough slots available in the system to satisfy the %d slots
that were requested by the application:
%s
Either request fewer slots for your application, or make more slots available
for use.
[orte-rmaps-rr:multi-apps-and-zero-np]
RMAPS found multiple applications to be launched, with
at least one that failed to specify the number of processes to execute.
When specifying multiple applications, you must specify how many processes
of each to launch via the -np argument.
[orte-rmaps-rr:per-node-and-too-many-procs]
There are not enough nodes in your allocation to satisfy your request to launch
%d processes on a per-node basis - only %d nodes were available.
Either request fewer processes, or obtain a larger allocation.
[orte-rmaps-rr:n-per-node-and-too-many-procs]
There are not enough nodes in your allocation to satisfy your request to launch
%d processes on a %d per-node basis - only %d nodes with a total of %d slots were available.
Either request fewer processes, or obtain a larger allocation.
[orte-rmaps-rr:n-per-node-and-not-enough-slots]
There are not enough slots on the nodes in your allocation to satisfy your request to launch on a %d process-per-node basis - only %d slots/node were available.
Either request fewer processes/node, or obtain a larger allocation.
[orte-rmaps-rr:no-np-and-user-map]
You have specified a rank-to-node/slot mapping, but failed to provide
the number of processes to be executed. For some reason, this information
could not be obtained from the mapping you provided, so we cannot continue
with executing the specified application.