Installation guide

Release Notes
Notable Feature Enhancements And Bug Fixes Beyond Scyld ClusterWare 4.3.1
New in Scyld ClusterWare 4.9.0 - Scyld Release 490g0000
1. The base kernel is upgraded to 2.6.9-100.490g0000.ELsmp. See https://rhn.redhat.com/errata/RHSA-2011-0263.html
for details.
2. Fixes various BProc bpmaster bugs that either caused a silent death of the daemon or a segfault, most commonly
associated with the death or rebooting of a compute node.
3. Fixes a beosi bug which used /sbin/sysctl to revert the kernel tunable variables back to their default state, which might
disable IP forwarding on the private cluster network.
4. Enhances the beoserv daemon to increase the max number of supported network interfaces per compute node from
seven to 16.
5. OpenMPI is upgraded to version 1.5.3. See the Section called Upgrading Earlier Release of Scyld ClusterWare to Scyld
ClusterWare 4.9.0 step 7 and step 8 for how to install co-existing openmpi-scyld releases, and the Section called Issues
with OpenMPI for details. Existing applications that were built against version 1.4.3 or earlier must be rebuilt against
this new version.
6. Includes a new mpich2-scyld package, which is a repackaging of the Open Source MPICH2 version 1.3.2 from
http://www.mcs.anl.gov/research/projects/mpich2/, and a new mvapich2-scyld package, which is a repackaging of the
Open Source MVAPICH2 version 1.6 from http://mvapich.cse.ohio-state.edu/. These Scyld ClusterWare distributions
employs environment modules to manage building and linking applications to a specific compiler family, plus
package-specific manpages. Use module avail to see the available module choices. Note: the mpirun command syntax
differs from the mpirun used for mpich-1.2.7p1 and mvapich-scyld-0.9.9. Users are encouraged to load the appropriate
environment module, then use man mpirun to review the syntax.
New in Scyld ClusterWare 4.8.2 Update - Scyld Release 482g0005
1. The base kernel is upgraded to 2.6.9-89.35.1.482g0003. The base distribution components are the same as the earlier
Scyld Release 482g0004 kernel, 2.6.9-89.35.1.482g0002, but with a change to the BProc modifications that are applied
to the kernel source code that necessitated a rebuild of the kernel.
2. Fixes a BProc bug that exhibited itself as a multithreaded application (e.g., Fluent, Java), executing on a compute node,
hanging during exit. This fix necessitated the release of a modified kernel, noted above.
3. Fixes beorun bug that incorrectly rejected as invalid a --map node list which included -1, the master node.
4. Fixes a beoserv segfault that occurred when booting a new node when the /etc/beowulf/config file uses node
entries with no additional arguments. This bug was introduced in Scyld Release 482g0004.
5. The latest TORQUE version 2.5.3 (introduced in Scyld Release 482g0000) has seemingly introduced various problems
running TORQUE jobs, and it is being withdrawn. See the Section called Issues with TORQUE version 2.5.3 for details.
New in Scyld ClusterWare 4.8.2 Update - Scyld Release 482g0004
1. The base kernel is upgraded to 2.6.9-89.35.1. See https://rhn.redhat.com/errata/RHSA-2011-0162.html for details.
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