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Commit c18891ad authored by Moe Jette's avatar Moe Jette
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Add topology web page

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doc/html/Makefile.am
+ 7
− 1
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...@@ -38,6 +38,8 @@ generated_html = \ ...@@ -38,6 +38,8 @@ generated_html = \
power_save.html \ power_save.html \
preempt.html \ preempt.html \
proctrack_plugins.html \ proctrack_plugins.html \
priority_multifactor.html \
priority_plugins.html \
programmer_guide.html \ programmer_guide.html \
publications.html \ publications.html \
quickstart_admin.html \ quickstart_admin.html \
...@@ -52,14 +54,17 @@ generated_html = \ ...@@ -52,14 +54,17 @@ generated_html = \
taskplugins.html \ taskplugins.html \
team.html \ team.html \
testimonials.html \ testimonials.html \
topology.html \
troubleshoot.html troubleshoot.html
html_DATA = \ html_DATA = \
${generated_html} \ ${generated_html} \
AllocationPies.gif \
arch.gif \ arch.gif \
configurator.html \ configurator.html \
coding_style.pdf \ coding_style.pdf \
entities.gif \ entities.gif \
ExampleUsage.gif \
lci.7.tutorial.pdf \ lci.7.tutorial.pdf \
lll.gif \ lll.gif \
mc_support.gif \ mc_support.gif \
...@@ -74,7 +79,8 @@ html_DATA = \ ...@@ -74,7 +79,8 @@ html_DATA = \
slurm_design.pdf \ slurm_design.pdf \
slurmstyles.css \ slurmstyles.css \
sponsors.gif \ sponsors.gif \
linuxstyles.css linuxstyles.css \
UsagePies.gif
MOSTLYCLEANFILES = ${generated_html} MOSTLYCLEANFILES = ${generated_html}
......
doc/html/Makefile.in
+ 7
− 1
View file @ c18891ad
...@@ -286,6 +286,8 @@ generated_html = \ ...@@ -286,6 +286,8 @@ generated_html = \
plugins.html \ plugins.html \
power_save.html \ power_save.html \
preempt.html \ preempt.html \
priority_multifactor.html \
priority_plugins.html \
proctrack_plugins.html \ proctrack_plugins.html \
programmer_guide.html \ programmer_guide.html \
publications.html \ publications.html \
...@@ -301,14 +303,17 @@ generated_html = \ ...@@ -301,14 +303,17 @@ generated_html = \
taskplugins.html \ taskplugins.html \
team.html \ team.html \
testimonials.html \ testimonials.html \
topology.html \
troubleshoot.html troubleshoot.html
html_DATA = \ html_DATA = \
${generated_html} \ ${generated_html} \
AllocationPies.gif \
arch.gif \ arch.gif \
configurator.html \ configurator.html \
coding_style.pdf \ coding_style.pdf \
entities.gif \ entities.gif \
ExampleUsage.gif \
lci.7.tutorial.pdf \ lci.7.tutorial.pdf \
lll.gif \ lll.gif \
mc_support.gif \ mc_support.gif \
...@@ -323,7 +328,8 @@ html_DATA = \ ...@@ -323,7 +328,8 @@ html_DATA = \
slurm_design.pdf \ slurm_design.pdf \
slurmstyles.css \ slurmstyles.css \
sponsors.gif \ sponsors.gif \
linuxstyles.css linuxstyles.css \
UsagePies.gif
MOSTLYCLEANFILES = ${generated_html} MOSTLYCLEANFILES = ${generated_html}
EXTRA_DIST = $(html_DATA) EXTRA_DIST = $(html_DATA)
......
doc/html/documentation.shtml
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− 0
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...@@ -34,6 +34,7 @@ Also see <a href="publications.html">Publications and Presentations</a>. ...@@ -34,6 +34,7 @@ Also see <a href="publications.html">Publications and Presentations</a>.
<li><a href="resource_limits.html">Resource Limits</a></li> <li><a href="resource_limits.html">Resource Limits</a></li>
<li><a href="reservations.html">Resource Reservation Gude</a></li> <li><a href="reservations.html">Resource Reservation Gude</a></li>
<li><a href="cons_res_share.html">Sharing Consumable Resources</a></li> <li><a href="cons_res_share.html">Sharing Consumable Resources</a></li>
<li><a href="topology.html">Topology</a></li>
</ul> </ul>
<li>External Schedulers</li> <li>External Schedulers</li>
<ul> <ul>
......
doc/html/review_release.html
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...@@ -2,7 +2,7 @@ ...@@ -2,7 +2,7 @@
<head> <head>
<title>SLURM Web pages for Review and Release</title> <title>SLURM Web pages for Review and Release</title>
<!-- Updated 3 March 2009 --> <!-- Updated 6 March 2009 -->
</head> </head>
<body> <body>
...@@ -60,6 +60,7 @@ ...@@ -60,6 +60,7 @@
<li><a href="https://computing-pre.llnl.gov/linux/slurm/taskplugins.html">taskplugins.html</a></li> <li><a href="https://computing-pre.llnl.gov/linux/slurm/taskplugins.html">taskplugins.html</a></li>
<li><a href="https://computing-pre.llnl.gov/linux/slurm/team.html">team.html</a></li> <li><a href="https://computing-pre.llnl.gov/linux/slurm/team.html">team.html</a></li>
<li><a href="https://computing-pre.llnl.gov/linux/slurm/testimonials.html">testimonials.html</a></li> <li><a href="https://computing-pre.llnl.gov/linux/slurm/testimonials.html">testimonials.html</a></li>
<li><a href="https://computing-pre.llnl.gov/linux/slurm/topology.html">topology.html</a></li>
<li><a href="https://computing-pre.llnl.gov/linux/slurm/troubleshoot.html">troubleshoot.html</a></li> <li><a href="https://computing-pre.llnl.gov/linux/slurm/troubleshoot.html">troubleshoot.html</a></li>
</ul> </ul>
</body> </body>
......
doc/html/topology.shtml 0 → 100644
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<!--#include virtual="header.txt"-->
<h1>Topology</h1>
<p>SLURM version 2.0 can be configured to support topology-aware resource
allocation to optimize job performance.
There are two primary modes of operation, one to optimize performance on
systems with a three-dimensional torus interconnect and another for
a hierarchical interconnect.</p>
<p>SLURM's native mode of resource selection is to consider the nodes
as a one-dimensional array.
Jobs are allocated resources on a best-fit basis.
For larger jobs, this minimizes the number of sets of consecutive nodes
allocated to the job.</p>
<h2>Three-dimension Topology</h2>
<p>Some larger computers rely upon a three-dimensional torus interconnect.
The IBM BlueGene computers is one example of this which has highly
constrained resource allocation scheme, essentially requiring that
jobs be allocated a set of nodes logically having a rectangular shape.
SLURM has a plugin specifically written for BlueGene to select appropriate
nodes for jobs, change network switch routing, boot nodes, etc as described
in the <a href="bluegene.html">BlueGene User and Administrator Guide</a>.</p>
<p>The Sun Constellation and Cray XT systems also have three-dimensional
torus interconnects, but do not require that jobs execute in adjacent nodes.
On those systems, SLURM only needs to allocate resources to a job which
are nearby on the network.
SLURM accomplishes this using a
<a href="http://en.wikipedia.org/wiki/Hilbert_curve">Hilbert curve</a>
to map the nodes from a three-dimensional space into a one-dimensional
space.
SLURM's native best-fit algorithm is thus able to achieve a high degree
of locality for jobs.
For more information, see SLURM's documentation for
<a href="sun_const.html">Sun Constellation</a> and
<a href="cray.html">Cray XT</a> systems.</p>
<h2>Hierarchical Networks</h2>
<p>SLURM can also be configured to allocate resources to jobs on a
hierarchical network to minimize network contention.
The basic algorithm is to identify the lowest level switch in the
hierarchy that can satisfy a job's request and then allocate resources
on its underlying leaf switches using a best-fit algorithm.</p>
<p>At some point in the future SLURM code may be provided to
gather network topology information directly.
Now the network topology information must be included directly
in the <i>slurm.conf</i> configuration file as shown in the
examples below.
The first example describes a three level switch in which
each switch has two children.
Note that the <i>SwitchName</i> values are arbitrary and only
used to bookkeeping purposes, but a name must be specified on
each line.
The leaf switch descriptions contain a <i>SwitchName</i> field
plus a <i>Nodes</i> field to identify the nodes connected to the
switch.
Higher-level switch descriptions contain a <i>SwitchName</i> field
plus a <i>Switches</i> field to identify the child switches.</p>
<pre>
# Switch Configuration
SwitchName=s0 Nodes=tux[0-1]
SwitchName=s1 Nodes=tux[2-3]
SwitchName=s2 Nodes=tux[4-5]
SwitchName=s3 Nodes=tux[6-7]
SwitchName=s4 Switches=s[0-1]
SwitchName=s5 Switches=s[2-3]
SwitchName=s6 Switches=s[4-5]
</pre>
<p>The next example is for a network with two levels and
each switch has four connections.</p>
<pre>
# Switch Configuration
SwitchName=s0 Nodes=tux[0-3]
SwitchName=s1 Nodes=tux[4-7]
SwitchName=s2 Nodes=tux[8-11]
SwitchName=s3 Nodes=tux[12-15]
SwitchName=s4 Switches=s[0-3]
SwitchName=s5 Switches=s[0-3]
SwitchName=s6 Switches=s[0-3]
SwitchName=s7 Switches=s[0-3]
</pre>
<p style="text-align:center;">Last modified 6 March 2009</p>
<!--#include virtual="footer.txt"-->
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