154 IBM Power 770 and 780 (9117-MMD, 9179-MHD) Technical Overview and Introduction
3.4.10 Linux support
IBM Linux Technology Center (LTC) contributes to the development of Linux by providing
support for IBM hardware in Linux distributions. In particular, the LTC makes tools and code
available to the Linux communities to take advantage of the POWER7+ technology and
develop POWER7+ optimized software.
Table 3-6 lists the support of specific programming features for various versions of Linux.
Table 3-6 Linux support for POWER7 features
Simultaneous
multithreading (SMT)
Ye s
j
Ye s
k
Ye s Ye s
l
Ye s Ye s
j
Ye s Ye s
j
Ye s
Active Memory Expansion No Yes
m
YesNoNoNo No No No
Capacity on Demand
n
Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s
AIX Workload Partitions No Yes Yes No No No No No No
a. This version can only support 10 virtual machines per core.
b. Need RHEL 6.3 Errata upgrade to support 20 virtual machines per core.
c. Requires IBM i 7.1 TR2 with PTF SI39077 or later.
d. Requires IBM i 7.1 TR1.
e. Will become fully provisioned device when used by IBM i.
f. Requires AIX 6.1 TL7 or later.
g. Requires AIX 7.1 TL1 or later.
h. Requires IBM i 7.1.4 or later.
i. Requires IBM i 7.1 TR4 PTF group or later. You can access this link for more details:
http://www-912.ibm.com/s_dir/SLKBase.nsf/1ac66549a21402188625680b0002037e/e1877ed7f3b0cfa8862579ec
0048e067?OpenDocument#_Section1
j. Only supports two threads.
k. AIX 6.1 up to TL4 SP2 only supports two threads, and supports four threads as of TL4 SP3.
l. IBM i 6.1.1 and up support SMT4.
m. On AIX 6.1 with TL4 SP2 and later.
n. Available on selected models.
Feature AIX
5.3
AIX
6.1
AIX
7.1
IBM i
6.1.1
IBM i
7.1
RHEL
5.8
RHEL
6.3
SLES 10
SP4
SLES 11
SP2
Features Linux releases Comments
SLES 10 SP4 SLES 11 SP2 RHEL 5.8 RHEL 6.3
POWER6
compatibility
mode
Ye s Ye s Ye s Ye s -
POWER7 mode No Yes No Yes Take advantage of the
POWER7+ and POWER7
features.
Strong Access
Ordering
No Yes No Yes Can improve Lx86
performance.
Scale to 256
cores/ 1024
threads
No Yes No Yes Base OS support is
available.
Four-way SMT No Yes No Yes Better hardware usage.
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