Installation guide

Release Notes
2. OpenMPI is upgraded to version 1.5.1. This release yet again restructures the locations of the compiler-specific libraries,
executable binaries, manpages, and environment modules, but now each new release of OpenMPI can gracefully coexist
with earlier releases, and existing applications that were built against an earlier version do not need to be immediately
rebuilt against this new version. See the Section called Upgrading Earlier Release of Scyld ClusterWare to Scyld Clus-
terWare 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.
New in Scyld ClusterWare 4.8.2 Update - Scyld Release 482g0003
1. Fixes a BProc bpmaster bug that exhibited itself as a verbose stream of syslog messages of the form EPOLLHUP, not
CONN_DEAD.
New in Scyld ClusterWare 4.8.2 Update - Scyld Release 482g0002
1. The base kernel is upgraded to 2.6.9-89.33.1. See https://rhn.redhat.com/errata/RHSA-2010-0936.html for details.
2. The Scyld ClusterWare igb Ethernet driver is upgraded to version 2.4.12. This driver derives from source found at
http://sourceforge.net/projects/e1000/files/. We recommend using this Scyld ClusterWare driver instead of the native
RHEL4-U8 driver (version 1.2.45-k2).
3. Fixes an rcmdd security flaw which permitted a non-root user to gain root access using rsh to a compute node.
4. When booting a cluster with ipforwarding enabled, Scyld ClusterWare silently increases the ip_conntrack max table size
to 524,288 to try to avoid ip_conntrack: table full, dropping packet syslog messages. See the Section called Optionally
increase the ip_conntrack table size for details.
New in Scyld ClusterWare 4.8.2 Update - Scyld Release 482g0001
1. Fixes a BProc bpmaster bug that exhibited itself as the bpmaster daemon consuming 100% of a master node CPU,
which paralyzed the cluster and drove the kernel into a soft lockup condition.
2. Fixes a BProc bug that exhibited itself as a kernel soft lockup condition that was reported on a compute node’s console
as the bpslave daemon executing __write_lock_failed.
New in Scyld ClusterWare 4.8.2 - Scyld Release 482g0000
1. The base kernel is upgraded to 2.6.9-89.31.1 (482g0000). See https://rhn.redhat.com/errata/RHSA-2010-0779.html for
details.
2. The Scyld ClusterWare igb Ethernet driver is upgraded to version 2.3.4. This driver derives from source found at
http://sourceforge.net/projects/e1000/files/. We recommend using this Scyld ClusterWare driver instead of the native
RHEL4-U8 driver (version 1.2.45-k2).
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