Changes between Version 12 and Version 13 of krg_performance

Timestamp:

Mar 27, 2008, 4:03:24 PM (17 years ago)

Author:

rider

Comment:

--

krg_performance

@@ -61 +61 @@
 Result: Using this machinefile,we only get one node running povary process by 4 CPUs and the others are nothing to do. [[BR]]
 
+'''Solution1''': [[BR]]
 Step1: rider@node101:~$ krg_capset -e +CAN_MIGRATE [[BR]]
 Step2: rider@node101:~$ migrate pid nodeid [[BR]]
@@ -66 +67 @@
 Failure: Running-povray process can not be divided to several threads for kerrighed to migrate. [[BR]]
 
-Solution: OpenMP + POVRAY (Testing) : [[BR]]
-Step1: rider@node101:~$ '''krgcapset -d +DISTANT_FORK,USE_INTRA_CLUSTER_KERSTREAMS''' [[BR]]
+'''Solution2''': [[BR]]
+When running an MPI application on Kerrighed, be sure to : [[BR]] 
+1 - You have only "localhost" in your node list file [[BR]]
+2 - You do not create local process with mpirun ("-nolocal" option with MPICH) [[BR]]
+3 - You have compiled MPICH with RSH_COMMAND = "'krg_rsh" [[BR]]
+4 - Be sure the Kerrighed scheduler is loaded (modules cpu_scheduler2, etc) [[BR]]
+5 - Be sure to enable process distant fork and use of kerrighed dynamic streams (in the terminal you launch MPI applications in, use the shell command krg_capset -d +DISTANT_FORK,USE_INTRA_CLUSTER_KERSTREAMS) [[BR]]
+
+rider@node101:~$ krgcapset -d +DISTANT_FORK,USE_INTRA_CLUSTER_KERSTREAMS,CAN_MIGRATE [[BR]]
+
+Reference URL: [[BR]]
+http://131.254.254.17/mpi.php [[BR]]
+http://kerrighed.org/forum/viewtopic.php?t=42 [[BR]]
+
+Failure: Running-povray process can not be divided to several threads for kerrighed to migrate. [[BR]]
 
 @Performance Report: For the attached file: mpi-povray performance_result.odt