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HP Integrity Superdome 2 8/16 HP Superdome 2 Partitioning Administrator Guide - Page 21

Partition names, Hyperthreading, Enabling or disabling Hyperthreading on HP Superdome 2 using the GUI

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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. NOTE: Hyperthreading was not enabled by default on legacy systems. Enabling or disabling Hyperthreading on HP Superdome 2 using the GUI To enable or disable hyperthreading on HP Superdome 2 using the GUI: 1. Log into the OA GUI. 2. Select the nPartition in the System and Devices tab. 3. Click Modify nPartition. 4. Click Advanced Settings. 5. Check or clear Enable Hyperthreading. 6. Click Apply. Hyperthreading is enabled or disabled depending on whether you check or clear the Enable Hyperthreading option. Enabling or disabling Hyperthreading on HP Superdome 2 using the CLI To enable hyperthreading on HP Superdome 2, run the following command: parmodify -p -T y To disable hyperthreading on HP Superdome 2, run the following command: parmodify -p -T n Where, nParId can be either the nPar name or the nPar number. NOTE: After hyperthreading is enabled for an nPartition, it is still necessary to configure the operating system of that partition to use it. For HP-UX, this means changing the value of the kernel parameter lcpu_attr to 1. Socket Local Memory On the HP Superdome 2 systems, memory controllers are associated with the processor sockets. Locality-specific resources such as memory and CPUs, which were assignable as cell-specific resources on legacy systems are now socket-specific resources. Therefore, the locality-specific memory in an HP Superdome 2 system is referred to as a Socket Local Memory (SLM) and the locality-specific processor cores are referred to as Socket Local Processors (SLP). nPartition properties 21

Section	Page
HP Superdome 2 Partitioning Administrator Guide	1
Contents	3
1 Introduction	7
Overview	7
HP Superdome 2 terminology	8
2 Partitioning in HP Superdome 2	9
Onboard Administrator and Partition Management	9
Accessing the OA	9
OA CLI	9
OA GUI	9
Managing Partitions – basics	10
nPartitions	10
Virtual Partitions (vPars)	11
Commands: Partition Help pages	11
Commands: Partition commands logging	12
Log file location and log format	12
Cases where no logging occurs	12
Cases where logging occurs	13
Constraints and restrictions to logging	13
Ordering and licensing	13
nPartitions licensing	13
Virtual Partitions licensing	13
Related software licensing	14
Ordering vPars	14
nPartition and Virtual Partition unique identifiers	14
3 Getting started with nPartitions	17
Administration tool for nPartitions	17
Onboard Partition Manager	17
Commands for configuring nPartitions	17
nPartition resources	18
Assigned or unassigned blades and I/O bays	19
Active and inactive blades	20
I/O Enclosures and I/O bays	20
Finding the resource path of I/O	20
nPartition properties	20
Partition names	21
Partition numbers	21
Hyperthreading	21
Enabling or disabling Hyperthreading on HP Superdome 2 using the GUI	21
Enabling or disabling Hyperthreading on HP Superdome 2 using the CLI	21
Socket Local Memory	21
Blade resource attributes	22
Operating system specific default values for nPartition attributes	25
Partition State and RunStates	26
Partition specifications (parspec)	28
Creating a Partition specification	29
Creating an nPartition from a Partition specification	29
Removing a Partition specification	29
Saving the current configuration of nPartition and switch to an alternate configuration	29
Identifying Partition specification using the OA GUI	29
4 Planning nPartitions	31
Recommended HP Superdome 2 nPartition configurations	31
HP Superdome 2 Partitioning choices	31
Superdome 2 CPU / CPU module support	34
CPU mixing support	35
HP Superdome 2 memory support	35
Sample procedure for creating nPartitions	35
5 Creating and configuring nPartitions	38
Tools for configuring nPartitions	38
Commands to configure nPartitions	38
Granting permission for an OS to manage nPartitions	38
Task summaries for creating and configuring nPartitions	39
Partition default attributes	39
Creating a new nPartition	40
Creating a new nPartition using the OA CLI	40
Creating a new nPartition using the OA GUI	40
Verifying newly created nPartitions using the CLI	41
Verifying newly created nPartitions using the OA GUI	42
Removing an nPartition	42
Removing an nPartition using the OA CLI	42
Removing (Deleting) an nPartition using the OA GUI	43
Renaming an nPartition	43
Renaming an nPartition using the OA CLI	43
Renaming an nPartition using the OA GUI	43
Assigning blades and I/O bays to an nPartition	43
Assigning blades and I/O bays to an nPartition using the OA CLI	43
Assigning blades and I/O bays to an nPartition using the OA GUI	44
Removing blades and I/O bays from an nPartition	45
Removing blades and I/O bays from an nPartition using the OA CLI	45
Removing blades and I/O bays from an nPartition using the OA GUI	46
Renaming a server complex	47
Setting blade attributes	47
Setting blade attributes using the OA CLI	48
Setting blade attributes using the OA GUI	48
6 Booting and resetting Partitions (nPartitions and vPars)	50
Overview of Partition system booting	50
Booting to UEFI and preparing for Operating System installation	50
Booting from the CLI	51
Booting from the GUI	52
Getting a Console using the CLI	55
Getting a Console using the GUI	55
UEFI I/O device connection solution	56
Device Connection Policies	57
Confirming the Installed IO cards	58
Getting MAC Addresses for Ignite-UX	59
Task Summaries for Rebooting and Resetting Partitions	60
POWEROFF PARTITION	61
POWERON PARTITION	64
REBOOT PARTITION	64
SET PARTITION DVD	65
SHOW PARTITION DVD	67
SHOW PARTITION INFO	69
Force System Reset and Crash Dump (TOC) PARTITION	69
UPDATE NPARTITION	70
UPDATE SHOW NPARTITION	72
UPDATE FIRMWARE	72
UPDATE SHOW FIRMWARE	72
HP Superdome 2 Boot Support	73
Local Boot	74
Considerations for Local Boot	74
Boot from local SAN	74
Boot from External SAN	74
nPartition and Resource Health Status	75
Viewing Partition and Resource Health Status Using the CLI	75
Viewing Partition and Resource Health Status Using the OA GUI	77
Resource health policy	77
7 Planning Your System for Virtual Partitions	79
Planning Your Virtual Partitions	79
Virtual Partitions Layout Plan	79
Virtual Partition Names	79
Minimal Hardware Configuration	80
CPU-core	80
CPU-core: Boot Processor Definitions	80
CPU-core: Specifying Min and Max Limits	80
CPU-core: Adding and Deleting by Total	81
vparcreate	81
vparmodify	82
CPU-core: Adding or Deleting by Socket Local Processor (SLP)	82
CPU-core: Adding or Deleting by Resource Path	83
CPU: Summary Information	83
Deleting CPU-cores Summary	84
CPU Allocation	84
Memory	84
Assigning Memory to a vPar	85
I/O	85
Assigning I/O at the rootport or I/O slot Level	85
Syntax, Rules, and Notes	86
Counts Summary	87
Parspec change policy	87
A note on Deconfiguration	87
8 Managing and Booting Virtual Partitions	89
Modes: Switching between nPars and vPars Modes	89
Modes	89
Setting the mode using the OA GUI	89
Setting the mode using the OA CLI	91
Getting the vPar Console	92
Managing: Creating a Virtual Partition	93
Booting a Virtual Partition	93
Managing: Modifying Attributes of a Virtual Partition	94
Commands: Displaying vPars Resource Information (vparstatus)	95
Virtual Partition States	95
vparstatus: Summary Information	96
Shutting Down or Rebooting a Virtual Partition	98
Shutting Down All Virtual Partitions	99
Managing: Removing a Virtual Partition	99
Boot options management for partitions	100
9 Installing or Removing the vPars product from the OS	101
Before You Install the vPars Software	101
Installing vPars	101
Bundle Names	103
vPars Product Bundles	103
Ignite-UX Cookbook	103
Removing the vPars Product	103
10 Support and other resources	104
Contacting HP	104
Before you contact HP	104
HP contact information	104
Subscription service	104
Documentation feedback	104
Related information	104
Typographic conventions	105
A Partition commands	107
Glossary	108

Match case Limit results 1 per page

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

-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.

NOTE:

Hyperthreading was not enabled by default on legacy systems.

Enabling or disabling Hyperthreading on HP Superdome 2 using the GUI

To enable or disable hyperthreading on HP Superdome 2 using the GUI:

Log into the OA GUI.

Select the nPartition in the System and Devices tab.

Click

Modify nPartition

Click

Advanced Settings

Check or clear

Enable Hyperthreading

Click

Apply

Hyperthreading is enabled or disabled depending on whether you check or clear the

Enable

Hyperthreading

option.

Enabling or disabling Hyperthreading on HP Superdome 2 using the CLI

To enable hyperthreading on HP Superdome 2, run the following command:

parmodify -p <nParId> -T y

To disable hyperthreading on HP Superdome 2, run the following command:

parmodify -p <nParId> -T n

Where,

nParId

can be either the nPar name or the nPar number.

NOTE:

After hyperthreading is enabled for an nPartition, it is still necessary to configure the

operating system of that partition to use it. For HP-UX, this means changing the value of the kernel

parameter

lcpu_attr

to 1.

Socket Local Memory

On the HP Superdome 2 systems, memory controllers are associated with the processor sockets.

Locality-specific resources such as memory and CPUs, which were assignable as cell-specific

resources on legacy systems are now socket-specific resources. Therefore, the locality-specific

memory in an HP Superdome 2 system is referred to as a Socket Local Memory (SLM) and the

locality-specific processor cores are referred to as Socket Local Processors (SLP).

nPartition properties