FreeBSD Boots on x86-64 42
craig2787 writes "FreeBSD developer Peter Wemm has successfully booted FreeBSD on a real AMD ClawHammer CPU, in both 64- and 32-bit modes. Original posting to the -current mailing list is here."
A Fortran compiler is the hobgoblin of little minis.
Em-Hache-Zed (Score:3, Interesting)
3 Megahertz? Whoohoo, looks like AMD is giving the Intel a run for it's money... and MOS, too.
Seriously, though, I'd eventually like to see some real world performance specs of Hammer running in 32 bit mode, just to see if it's going to suffer from the same 32-bit-on-64-bit problems that Itanic has been having. If they figured out a way around that, they could totally own the market because Itanium 1 is dead and all cursory tests on Itanium 2 show it sucks the glands of a large braying animal when it comes to 32 bit code.
Re:Em-Hache-Zed (Score:5, Insightful)
Benchmarks will come in time. Right now everyone that has a Hammer system is under NDA from AMD. Think about it, if everyone was posting performance numbers months before Hammer was ready for introduction, that would give Intel plenty of time to come up with some sort of response. When April 23 comes and the chip is officially released, I suspect that a ton of performance numbers will be released within a few seconds.
As for the 32-bit-on-64-bit problem, remember that the amd64 architecture is just an extension on ia32, much like ia32 was an extension of the 16-bit stuff. Code either uses the wider registers or it doesn't. The real fear is that 64-bit code won't perform as fast as 32-bit code, since 64-bit pointers/integers/etc means less efficient cache usage.
Re:Em-Hache-Zed (Score:5, Funny)
Everyone sing!!
Ok, now we now go back to your regularly scheduled BSD is dying trolls
Re:Em-Hache-Zed (Score:1)
Oh, BSD is dying, and everyone knows it.
It's dying in reverse
Re:Em-Hache-Zed (Score:2)
Re:Em-Hache-Zed (Score:3, Interesting)
Re:Em-Hache-Zed (Score:5, Informative)
Also, note this is a Clawhammer cpu, not the Sledgehammer/Opteron that is coming up for release on April 23.
Re:Em-Hache-Zed (Score:2, Funny)
What can you talk about about the machine? Do you know if the Opteron and Hammer are gonna share the same Chipsets?
Maybe I should ask something about BSD too to even things out... Uhm, In a Texas-style cage match between Tux, Beastie and that damn Mysql Dolphin, who'd win?
Re:Em-Hache-Zed (Score:1)
Re:Em-Hache-Zed (Score:1)
Re:Em-Hache-Zed (Score:5, Informative)
According to reports I've read, the new Opteron actually outperforms the current Athlon clock-for-clock in 32-bit Legacy mode (32-bit OS running 32-bit code) because at base, the decode paths and functional unit pipelines are similar to the present generation processor. There are some additional tricks they have pulled to get some more speed, like a "smart" TLB that only flushes its cache of page table entries when truly necessary (not at every context switch).
In 64-bit Mode (where a 64-bit OS runs 64-bit code), average instruction length has increased because of the addition of a preface byte to every 64-bit instruction, but overall code size has DECREASED because 8 additional general purpose registers have been added (reducing compiler generated load/store code). This decrease in code size compensates for the larger average instruction length and enables performance to remain on-par with 32-bit.
However, I will feel much better about these claims once I have seen some true performance comparisons at an independent reviewer's site! :)
Re:Em-Hache-Zed (Score:1)
Don't forget about the on-die memory controller. That also pumps up the performance in legacy mode.
Re:Em-Hache-Zed (Score:1)
FreeBSD / NetBSD (Score:3, Insightful)
FreeBSD has focused on Itanium up until now, given that production hardware has been available for a while. There are people who already have them in their datacenters and who want to run FreeBSD on them. It's part of the pragmatism that is at the base of FreeBSD's philosophy.
NetBSD has more of a research-focused, "climb the mountain because it's there" philosophy. Compare mottos: "FreeBSD -- The Power To Serve" vs. "Of Cou
Re:FreeBSD / NetBSD (Score:1)
And I find FreeBSD's documentation to be the best amongst the three.
Thanks for the clarification.
Re:Em-Hache-Zed (Score:2)
Since this is a pre-aplha machine, AMD does not want people to talk about specs. But, on the other hand they can talk about pi (3.14). To guard himself, this guy looks like he has put pi as the value of the MHz speed.
So, (Score:2, Funny)
Re:So, (Score:5, Funny)
Who let the Iraqi Information Minister out of Baghdad?
8x 3Ghz box that runs Quake on a GeForce4 - drool (Score:2, Offtopic)
Re:8x 3Ghz box that runs Quake on a GeForce4 - dro (Score:1)
will do (Score:1)
OSS and AMD (Score:1)
Great News (Score:2, Insightful)
You've definitely got to hand it to BSD; it seems to be able boot on just about anything. One look at NetBSD's home page makes this obvious. :)
This added compatability is not only good news for BSD users, but also for the whole open source community, which doesn't seem to have any trouble keeping up with new technology.
Re:Great News (Score:1)
Imagine.... (Score:1, Offtopic)
Because you can cluster BSD as well, can't you?
*unsure and confused since there arent any cluster-remarks*
Ooh (Score:1, Offtopic)
Will it keep my feet warm with that x86-64?
crashes before /sbin/init ???!!!! (Score:1)