topic Itanium multithreading and HP-UX in Operating System - HP-UX

Itanium multithreading and HP-UX

Trojan36 — Thu, 25 Sep 2008 13:58:27 GMT

Anyone know when does the H/W multithreading get turned on? I was told is not turned on until HPUX 11v3. Any documentations on this? Thx in advance.

Re: Itanium multithreading and HP-UX

Torsten. — Thu, 25 Sep 2008 14:05:35 GMT

It works only with 11.31 - not with earlier versions.

Turn it on or off using "setboot -m on|off":

# setboot
Primary bootpath : 0/0/1/1/0
HA Alternate bootpath : 2/0/1/1/0
Alternate bootpath :

Autoboot is ON (enabled)
Hyperthreading : OFF
: OFF (next boot)

Re: Itanium multithreading and HP-UX

Don Morris_1 — Thu, 25 Sep 2008 14:12:48 GMT

v3 White paper on the topic:

http://h71028.www7.hp.com/ERC/downloads/4AA0-7695ENW.pdf?jumpid=reg_R1002_USEN

(Note the Appendix A section specifically mentioning that HT enablement is not supported on v2).

In the release notes:
http://docs.hp.com/en/5991-6469/ch05s15.html?jumpid=reg_R1002_USEN

vPars Guide:
http://docs.hp.com/en/T1335-90098/ch06s25.html?jumpid=reg_R1002_USEN