Home > OpenBSD > AMD64 SMP Support Ready for TestingAMD64 SMP Support Ready for Testing Eugenia Loli 2004-06-25 OpenBSD 9 CommentsOpenBSD now has SMP support for amd64. Learn more about it here.About The Author Eugenia LoliEx-programmer, ex-editor in chief at OSNews.com, now a visual artist/filmmaker.Follow me on Twitter @EugeniaLoli 9 Comments 2004-06-25 9:53 pm I’ve used OpenBSD since version 2.7 and use it exclusively on my server machines. It is a simple, elegant, stable OS. The only real “constructive criticism” I’ve ever had regarding OpenBSD was the lack of SMP support. I’m glad to see SMP support finally making its way into OpenBSD; especially in the AMD64 area. 2004-06-25 11:16 pm I just wondered reading the rss-feed (my reader shows the title-lines only) whether amd64 a/k/a opteron-architecture and its smp-ability was something new and noteworthy … “OpenBSD amd64 smp support etc” would be a better title I guess.Thanks for the news though – Deucalion 2004-06-26 4:06 am OpenBSD is now ready for powerful servers with SMP support. Great work OpenBSD Team!!! (breaking some critics, ) 2004-06-26 9:17 am Credit where it’s due, SMP and AMD64 support come from NetBSD, where it’s been working for some time now… 2004-06-26 11:09 am Does OpenBSD support SMP on IA32 processors?If so wouldn’t it only require 1 or 2 changes to support AMD64 SMP?The instruction sets are almost the same so I don’t see why its such a big deal. 2004-06-26 5:10 pm Nope. OpenBSD has never had SMP support. Hence, they are starting from scratch. 2004-06-26 5:53 pm No, we are talking about full 64 bit support here. So that is more than just a “few changes”.BTW, recently SMP gained SMP support for IA32 processorts. 2004-06-27 3:11 pm The Athlon MP and the related dual-processors motherboards have been available for many years. Why has OpenBSD chosen the Athlon 64 instead of an older and (dare I say) more affordable platform ? Was it because the developer had only access to an Athlon 64 ? 2004-06-27 4:53 pm Why has OpenBSD chosen the Athlon 64 instead of an older and (dare I say) more affordable platform ?Both are being worked on, but the thing was that a quad Opteron was given to them for the duration of the Hackathon. i386 SMP has been a back burner project in OpenBSD for a while now, and has only recently been put in -CURRENT.