From: W. Trevor King <wking@drexel.edu>
Date: Wed, 13 Oct 2010 16:41:26 +0000 (-0400)
Subject: mpdboot requires an `-n N` option.  Adjust src/*/README accordingly.
X-Git-Url: http://git.tremily.us/?a=commitdiff_plain;h=2a9b129c996e73ba15827841e593e7a245748c9f;p=parallel_computing.git

mpdboot requires an `-n N` option.  Adjust src/*/README accordingly.
---

diff --git a/src/MPI2_message_passing/README b/src/MPI2_message_passing/README
index 34db2b5..20e6886 100644
--- a/src/MPI2_message_passing/README
+++ b/src/MPI2_message_passing/README
@@ -52,10 +52,10 @@ Usage
 
 Start the Message Passing Daemons with
 
-    $ mpdboot -f mpd.hosts
+    $ mpdboot -n 4 -f mpd.hosts
 
-which spawns a daemon (`mpd`) on each host.  Then run your program
-(e.g. `simplest_message`) with.
+which spawns a daemon (`mpd`) on the first four hosts in `mpd.hosts`.
+Then run your program (e.g. `simplest_message`) with.
 
     $ mpiexec -n 4 ./simplest_message
 
diff --git a/src/average/README b/src/average/README
index 22d61cc..f582649 100644
--- a/src/average/README
+++ b/src/average/README
@@ -35,6 +35,6 @@ Serial code
 
 Parallel code
 
-    $ mpdboot -f mpd.hosts
+    $ mpdboot -n 4 -f mpd.hosts
     $ mpiexec -n 4 ./average_parallel data
     $ mpdallexit
diff --git a/src/global_operations/README b/src/global_operations/README
index dbafc6c..ea5834c 100644
--- a/src/global_operations/README
+++ b/src/global_operations/README
@@ -32,7 +32,7 @@ Serial code
 
 Parallel code
 
-    $ mpdboot -f mpd.hosts
+    $ mpdboot -n 4 -f mpd.hosts
     $ mpiexec -n 4 ./global_mpi_operations
     $ mpiexec -n 4 ./broadcast
     $ mpdallexit
diff --git a/src/hello_MPI/README b/src/hello_MPI/README
index c3c1ca1..16eee06 100644
--- a/src/hello_MPI/README
+++ b/src/hello_MPI/README
@@ -54,10 +54,11 @@ Create a list of possible hosts `mpd.hosts`, for example
     xphy1.physics.xterm.net
     xphy2.physics.xterm.net
     ...
+    xphy15.physics.xterm.net
 
 Start the Message Passing Daemons with
 
-    $ mpdboot -f mpd.hosts
+    $ mpdboot -n 15 -f mpd.hosts
 
 which spawns a daemon (`mpd`) on each host.  Then run your program
 (e.g. `hello`) with.