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Commit 183367ac authored by Moe Jette's avatar Moe Jette
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Make note about task ordering across nodes.

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...@@ -9,7 +9,7 @@ ...@@ -9,7 +9,7 @@
<meta http-equiv="keywords" content="Simple Linux Utility for Resource Management, SLURM, resource management, <meta http-equiv="keywords" content="Simple Linux Utility for Resource Management, SLURM, resource management,
Linux clusters, high-performance computing, Livermore Computing"> Linux clusters, high-performance computing, Livermore Computing">
<meta name="LLNLRandR" content="UCRL-WEB-204324"> <meta name="LLNLRandR" content="UCRL-WEB-204324">
<meta name="LLNLRandRdate" content="10 August 2004"> <meta name="LLNLRandRdate" content="17 August 2004">
<meta name="distribution" content="global"> <meta name="distribution" content="global">
<meta name="description" content="Simple Linux Utility for Resource Management"> <meta name="description" content="Simple Linux Utility for Resource Management">
<meta name="copyright" <meta name="copyright"
...@@ -135,8 +135,8 @@ We recommend the use of Munge unless you are experienced with authd. ...@@ -135,8 +135,8 @@ We recommend the use of Munge unless you are experienced with authd.
of a cluster for proper operation, its underlying authentication mechanism of a cluster for proper operation, its underlying authentication mechanism
may have this requirement. For instance, if SLURM is making use of the may have this requirement. For instance, if SLURM is making use of the
auth/munge plugin for communication, the clocks on all nodes will need to auth/munge plugin for communication, the clocks on all nodes will need to
be synchronized. be synchronized. </p>
</p>
<h4>MPI support</h4> <h4>MPI support</h4>
<p>Quadrics MPI works directly with SLURM on systems having Quadrics interconnects. <p>Quadrics MPI works directly with SLURM on systems having Quadrics interconnects.
For non-Quadrics interconnect systems, <a href="http://www.lam-mpi.org/">LAM/MPI</a> For non-Quadrics interconnect systems, <a href="http://www.lam-mpi.org/">LAM/MPI</a>
...@@ -145,6 +145,10 @@ initiate job-specific daemons on each node using SLURM's <span class="commandlin ...@@ -145,6 +145,10 @@ initiate job-specific daemons on each node using SLURM's <span class="commandlin
command. This places all MPI processes in a process-tree under the control of command. This places all MPI processes in a process-tree under the control of
the <b>slurmd</b> daemon. LAM/MPI version 7.1 or higher contains support for the <b>slurmd</b> daemon. LAM/MPI version 7.1 or higher contains support for
SLURM.</p> SLURM.</p>
<p>Note that the ordering of tasks within an job's allocation matches that of
nodes in the slurm.conf configuration file. SLURM presently lacks the ability
to arbitrarily order tasks across nodes.</p>
<h4>Scheduler support</h4> <h4>Scheduler support</h4>
<p>SLURM's default scheduler is FIFO (First-In First-Out). A backfill scheduler <p>SLURM's default scheduler is FIFO (First-In First-Out). A backfill scheduler
plugin is also available. Backfill scheduling will initiate a lower-priority job plugin is also available. Backfill scheduling will initiate a lower-priority job
...@@ -428,7 +432,7 @@ in the NEWS file. ...@@ -428,7 +432,7 @@ in the NEWS file.
<td colspan="3"><hr> <p>For information about this page, contact <a href="mailto:slurm-dev@lists.llnl.gov">slurm-dev@lists.llnl.gov</a>.</p> <td colspan="3"><hr> <p>For information about this page, contact <a href="mailto:slurm-dev@lists.llnl.gov">slurm-dev@lists.llnl.gov</a>.</p>
<p><a href="http://www.llnl.gov/"><img align=middle src="lll.gif" width="32" height="32" border="0"></a></p> <p><a href="http://www.llnl.gov/"><img align=middle src="lll.gif" width="32" height="32" border="0"></a></p>
<p class="footer">UCRL-WEB-204324<br> <p class="footer">UCRL-WEB-204324<br>
Last modified 10 August 2004</p></td> Last modified 17 August 2004</p></td>
</tr> </tr>
</table> </table>
</td> </td>
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