Qlogic OFED+ Host Spezifikationen Seite 12

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QLogic OFED+ Host Software Page 12 of 20
For 8-core, Intel Harpertown, Xeon 54xx, nodes:
options ib_qib singleport=1 pcie_caps=0x51 pcie_coalesce=1 krcvqs=8
rcvhdrcnt=4096
For 16-core, 4x Intel quad-core CPUs, nodes:
options ib_qib singleport=1 pcie_caps=0x51 rcvhdrcnt=4096
(Leave all 16 contexts for PSM)
5.5.3 Intel Nehalem or Westmere CPU Systems (DIMM configuration)
Compute node memory bandwidth is important for HPC application performance and for
storage node performance. On Intel CPUs codenamed Nehalem or Westmere (Xeon 5500
Series or 5600 Series) it is important to have an equal number of DIMMs on each of the
three memory channels for each CPU. On the common dual CPU systems, you should use a
multiple of six DIMMs for best performance. Details on DIMM configuration for these CPUs
at in the following URL:
http://www.delltechcenter.com/page/04-08-2009+-
+Nehalem+and+Memory+Configurations
(even though only Nehalem is mentioned in the previous information, the same rules apply
for Westmere).
5.5.4 AMD CPU Systems (in general)
Turn off the specified daemons using the following commands:
/sbin/chkconfig irqbalance off
/sbin/chkconfig --level 12345 cpuspeed off (for RHEL or similar systems)
/sbin/chkconfig --level 12345 powersaved off (for SLES systems)
/sbin/chkconfig --level 12345 haldaemon off
Set init runlevel = 3
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