Re: Hyperthreading in 6.x ... still frowned upon?

On Wed, May 03, 2006 at 01:36:04PM -0400, Vinny Abello wrote:

An Intel technical rep that gave a presentation on upcoming Intel VT
technology in processors (Virtualization Technology) that I attended
indicated that Hyperthreading was really designed to start getting
programmers to program threading into their applications in
preparation of dual core processors that we now have.

That sounds like an interesting interpretation of history :-)

I typically disable Hyperthreading on all my servers as they are dual
processor or dual core/dual processor or better anyway. I tend to get
better results (with my applications) without Hyperthreading. I've
been experimenting with leaving it on with my workstation as it's not
a dual core or dual processor.

In my experience it's almost always a net loss too. One should
measure for oneself though.

Kris

Attachment: pgpHWtjua1sCP.pgp
Description: PGP signature

Relevant Pages

  • Re: Intel strikes back with a parallel x86 design
    ... > Intel's bedfellow on the basis of a compelling roadmap. ... > Intel claims they aren't developing Hyperthreading anymore. ... a dual core chip is more efficient than a hyperthreaded chip ...
    (comp.arch)
  • Re: Dual Core and Photoshop CS
    ... Since Photoshop runs on top of XP, it can only use what XP tells it to use. ... If XP Pro would see two processors in a Dual Core chip, I would think that it would allocate different processes to them, much like it does with HT. ... However, if Photoshop doesn't know how to use the "two" processors that XP thinks are there with HT, why would it suddenly get smarter on a Dual Core machine? ... But you won't get a big win out of HyperThreading because you still ...
    (comp.graphics.apps.photoshop)
  • Re: OS question
    ... that the CPU in your system is hyperthreaded, ... performance compared to older, slower memory... ... The D is for Dual Core. ... What is "hyperthreading" and why would its ...
    (alt.sys.pc-clone.dell)
  • Re: Dual Core and Photoshop CS
    ... >>>If Dual Core works like HT on Intel processors, ... >>>my Intel 3.2 GHz Prescott. ... >> Hecate - The Real One ... There are situations where hyperthreading can really make a huge ...
    (comp.graphics.apps.photoshop)
  • Re: Hyperthreading or dual core
    ... Go for a single processor, dual core, with hyperthreading turned off. ... The cost of dual cores is now on par with single core chips, ... performance computing later this month. ... How much does SW benefit from a Dual core processor compared to a Pent.4 ...
    (comp.cad.solidworks)