From f30518dd08b8e62bd23fc9e7454a48913f056d1d Mon Sep 17 00:00:00 2001
From: Moe Jette <jette1@llnl.gov>
Date: Fri, 23 May 2008 20:22:46 +0000
Subject: [PATCH] expand explanation of PMI_FANOUT_OFF_HOST env var.

---
 doc/man/man1/srun.1 | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/doc/man/man1/srun.1 b/doc/man/man1/srun.1
index 9c89faf2d36..e7c755e885d 100644
--- a/doc/man/man1/srun.1
+++ b/doc/man/man1/srun.1
@@ -1144,8 +1144,10 @@ per host and one task on that host forwards the data to other
 tasks on that host up to \fBPMI_FANOUT\fR. 
 If \fBPMI_FANOUT_OFF_HOST\fR is defined, the user task 
 may be required to forward the data to tasks on other hosts.
-Setting \fBPMI_FANOUT_OFF_HOST\fR may increase performance
-and vulnerability to failures.
+Setting \fBPMI_FANOUT_OFF_HOST\fR may increase performance. 
+Since more work is performed by the PMI library loaded by
+the user application, failures also can be more common and 
+more difficult to diagnose.
 .TP
 \fBPMI_TIME\fR
 This is used exclusively with PMI (MPICH2 and MVAPICH2) and 
-- 
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