Cray - Document signal handling with respect to ALPS reservations

doc/html/cray.shtml

@@ -154,6 +154,13 @@ file.  This option is set with RPMs from Cray.</p>
 <p>Cray/ALPS node ordering is a topic of ongoing work, some information can be found in the CUG-2010 paper
    "<i>ALPS, Topology, and Performance</i>" by Carl Albing and Mark Baker.</p>
 
+<h3>The scancel command and signalling jobs</h3>
+On Cray systems, all signals <b>except</b>
+SIGCHLD, SIGCONT, SIGSTOP, SIGTSTP, SIGTTIN, SIGTTOU, SIGURG, or SIGWINCH
+cause the ALPS reservation to be released.
+The job however will not be terminated except in the case of SIGKILL and
+may then be used for post processing.
+
 <h3>GPU Use</h3>
 
 <p>Users may specify GPU memory required per node using the <i>--gres=gpu_mem:#</i>
@@ -642,6 +649,6 @@ allocation.</p>
 
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-<p style="text-align:center;">Last modified 18 September 2012</p></td>
+<p style="text-align:center;">Last modified 7 November 2012</p></td>
 
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doc/man/man1/scancel.1

-.TH SCANCEL "1" "January 2011" "scancel 2.3" "Slurm components"
+.TH SCANCEL "1" "November 2012" "scancel 2.5" "Slurm components"
 
 .SH "NAME"
 scancel \- Used to signal jobs or job steps that are under the control of Slurm.
@@ -190,6 +190,12 @@ time for the running job/step(s) to clean up.
 .LP
 If a signal value of "KILL" is sent to an entire job, this will cancel
 the active job steps but not cancel the job itself.
+.LP
+On Cray systems, all signals \fBexcept\fR
+SIGCHLD, SIGCONT, SIGSTOP, SIGTSTP, SIGTTIN, SIGTTOU, SIGURG, or SIGWINCH
+cause the ALPS reservation to be released.
+The job however will not be terminated except in the case of SIGKILL and
+may then be used for post processing.
 
 .SH "AUTHORIZATION"