HP Superdome 2 Partitioning Administrator Guide (5900-2540, December 2012)

NOTE: An I/O enclosure can be shared across nPartitions running either CB900s i2 blade or
CB900s i4 blades by assigning each I/O bay independently to different partitions.
NOTE: There are some I/O slots on the blade itself. These are two dual-port LAN on Motherboard
modules (LoMs) and the iLO port of the blade. The LoMs are assigned slot numbers 4 and 5. The
blade USB or VGA is assigned slot number 6. The iLO is assigned slot number 7.
Finding the resource path of I/O
Use the OA CLI or UEFI Shell commands to locate the resource path of your blade-based I/O
components and I/O bay-based I/O slots. Using the HP Superdome 2 OA, run the parstatus
–c {enclosure#/blade#} –V command. For example, the parstatus -c1/2 -V command
reports the path of the LoMs on blade 2 in enclosure 1. Using the UEFI shell, the info io command
returns all of the resource paths to all I/O. The following is a sample output of the info io
command for a dual ported LoM (enclosure 1, blade 2, I/O slot 5):
1/2/5 04/80 00/00 14E4/1650 103C/7105/00 Network Controller - Ethernet control
1/2/5 04/80 00/01 14E4/1650 103C/7105/00 Network Controller - Ethernet control
For the same LoMs, the resource path listing that uses the parstatus -c1/2 is shown below.
LAN on Motherboard NICs are numbered 4 and 5:
RP Path Slot Slot Type Status
=========== ========= ========== =======
1/2/0/0/0 1/2/4 Lan OK
1/2/0/0/2 1/2/5 Lan OK
nPartition properties
This section describes the commonly used nPartition properties you work with when performing
the nPartition administration tasks:
• “Partition names” (page 19)
• “Partition numbers” (page 19)
• “Hyperthreading” (page 19)
• “Socket Local Memory” (page 20)
Partition names
Specifies the name of the nPartition. The parcreate —P name command is used to create an
nPartition with a name associated with it. An nPartition name must have at least one of the following
non-numeric characters: a-z, A-Z, dash (-), under-score (_), or period (.). An nPartition name with
the same format as the default name can only be specified if the specified name matches the nPar
number. If name is not specified either through the -p or -P options, a default name of the format
nParNNNN is given to the nPartition (where, NNNN is a 4 digit nPartition number).
Partition numbers
Specifies the number of the nPartition. The parcreate —p number command is used to create
an nPartition with a number associated with it. If -p number is not specified, an nPartition number
is automatically assigned to the created nPartition. Valid partition numbers range from 1 to 255.
Hyperthreading
Hyperthreading technology delivers thread-level parallelism on each processor core resulting in
efficient use of processor resources—higher processing throughput and improved performance on
multi-threaded software. Hyperthreading is enabled by default in an nPartition running on HP
Superdome 2 servers.
nPartition properties 19