December 2011
Intermediate to advanced
426 pages
13h 30m
English
book
Power Systems Enterprise Servers with PowerVM Virtualization and RAS
by Dino Quintero, JinHoon Baek, Guillermo Diez, Hassan Elsetohy, Debra Francis, Bing He, Rajesh Jeyapaul, Anil Kalavakolanu, Tejaswini Kaujalgi, David Kgabo, Ricardo Puig, Vani Ramagiri
Content preview from Power Systems Enterprise Servers with PowerVM Virtualization and RAS
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Chapter 7. POWER7 Enterprise Server performance considerations 307
IBM i versions 6.1 and 7.1 are supported on POWER7; however, there are differences in
terms of the number of hardware threads that can be active at any single point in time. The
maximum value for threads supported by IBM i 6.1 is 128. The IBM i 7.1 supports 256
hardware threads on POWER7 in a single partition. You can run up to 64 processors in either
version, but 6.1 supports only SMT2 when 64 processors are used. IBM i 7.1 supports 64
processors with SMT4, up to a maximum of 256 hardware threads.
In case you need more than 64 processors in one IBM i partition, you can request special
support from IBM Lab Services by going to the following website:
http://www.ibm.com/systems/service ...
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