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Newisys AMD x86-64 servers
Are opterons the future of desktops or are they just a stop gap.
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On Mon, 23 Jun 2003 13:34:33 -0400, Yousuf Khan wrote:
I am starting to see a definitive shift towards Linux solutions in places where there was previously a Solaris-only shop. It's just an observation I've noticed in the last couple of months. Yousuf Khan All of us in the Western World also see the solar eclipse ;-) Seriously, a few engineering companies I worked in have surrounded Sun servers with mostly Linux workstations where in the past they would have bought all Sun workstations. |
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"Gomer Pyle" wrote in message
thlink.net... On Mon, 23 Jun 2003 13:34:33 -0400, Yousuf Khan wrote: I am starting to see a definitive shift towards Linux solutions in places where there was previously a Solaris-only shop. It's just an observation I've noticed in the last couple of months. Yousuf Khan All of us in the Western World also see the solar eclipse ;-) Is that some kind of a pun, i.e. "solar eclipse"? Seriously, a few engineering companies I worked in have surrounded Sun servers with mostly Linux workstations where in the past they would have bought all Sun workstations. What I'm saying is that I'm starting to find that people are wanting Unix admins to also have a Linux background these days. It's no longer enough to just know Solaris. Yousuf Khan |
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Rich Teer wrote: On Mon, 23 Jun 2003, Yousuf Khan wrote: Well, it's not just the number of processors that determine a server's sophistication. It's also all of the advanced fault-tolerant hardware onboard, and system management software available. Still paying catch up in Intel land? Us SPARC users have had those features on low end servers for years... On the other hand Intel land has had full parity and EDC protected cache hierarchies for a lot longer than Sun customers. Q: If a Sun server crashes in a forest and no one not under NDA observed it, did it really crash? -- Paul W. DeMone The 801 experiment SPARCed an ARMs race of EPIC Kanata, Ontario proportions to put more PRECISION and POWER into architectures with MIPSed results but ALPHA's well that ends well. -----= Posted via Newsfeeds.Com, Uncensored Usenet News =----- http://www.newsfeeds.com - The #1 Newsgroup Service in the World! -----== Over 80,000 Newsgroups - 16 Different Servers! =----- |
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"Bill Todd" wrote in message
... The AMD Opterons on the other hand are a completely different animal, they live for scaling Up to 4 processors, certainly. Up to 8 processors, possibly. Beyond that, no one knows yet (at least no one who is talking). Maybe the examples don't exist yet, but looking at the architecture it certainly seems like it should not be a problem scaling beyond 8 processors with external solutions. -- each Opteron controls its own memory directly and they talk to each other over point-to-point links rather than shared buses. Only up to 8 processors. What happens beyond that point has not yet been disclosed, AFAIK. At that point it would be a proprietary solution, something like Sun's Fireplane interconnect. It doesn't have to Hypertransport through and through. You could use HT between the processors within any single system board, but you can connect each of the system boards with any other interconnect you like. It's just a basic fact of life in NUMA architectures, some connections are going to be slower than others. Some people question how well Opteron will scale to 8 processors in a glueless configuration. In particular, it uses a broadcast-invalidation (rather than directory-based) cache-coherence mechanism that certainly would have difficulty scaling much beyond 8 processors and may scale less than linearly in the 4 - 8 processor region. We'll presumably see soon whether AMD just allowed that extension because it was easy to do so and because it scales usefully even if not very linearly. I really don't see this as a problem. This would be a problem in a shared memory architecture like Intel's, but each Opteron directly accesses its own assigned memory, and when it comes time to access memory located on another Opteron, each remote Opteron has to ask permission from the local Opteron's controller. There is already a Cray supercomputer project for Sandia National Labs making use of 10,000 Opterons; that uses a special Cray proprietary crossbar connector between system boards, but the rest is just off-the-shelf. My impression is that it's not ccNUMA, however. If so, while it may well be interesting for Cray, most operating systems would have no idea how to use it. There is also a project at some US university to use a 128 Opterons in a system. I think it was the University of Texas. Anyways we'll have to see how they cross-connect those Opterons too. Yousuf Khan |
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"Lee Waun" wrote in message
... Are opterons the future of desktops or are they just a stop gap. They are neither. Opterons are server chip, and possibly a workstation chip. For the desktop market, AMD will introduce the Athlon 64, which is also an AMD64 architecture chip, but with less cache. Yousuf Khan |
#7
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Yousuf Khan wrote:
Perhaps they should call them dead-end servers. Too little, too late. These AMD Opterons can be scaled upto 8-way/system board with no special glue logic; they simply work that way out of the box because of the Hypertransport links. Packaging and heat considerations may prevent anyone from implementing a practical 8-way system board, but that's beside the point. So? I'm not impressed. Sun had systems out with more than 8 CPUs nearly a decade ago. Inteland is still playing catchup. With whatever existing crossbar connection technology a manufacturer might already have, they can easily scale beyond the 8-way. Why don't you get back to us when they have more than 100. Of course, by that time, Sun will have raised the bar yet again. -am © 2003 |
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Anthony Mandic wrote:
Yousuf Khan wrote: Perhaps they should call them dead-end servers. Too little, too late. These AMD Opterons can be scaled upto 8-way/system board with no special glue logic; they simply work that way out of the box because of the Hypertransport links. Packaging and heat considerations may prevent anyone from implementing a practical 8-way system board, but that's beside the point. So? I'm not impressed. Sun had systems out with more than 8 CPUs nearly a decade ago. Inteland is still playing catchup. With whatever existing crossbar connection technology a manufacturer might already have, they can easily scale beyond the 8-way. Why don't you get back to us when they have more than 100. Of course, by that time, Sun will have raised the bar yet again. Is 9632 processors big enough? ASCI Red is based on Pentium Pro processors and has been out for a few years. Come back when Sun have made more than 10,000, but of course by then somebody who isn't Sun will have raised the bar even more. Even the SGI Altix system goes to 64 Itanium chips and is a mass market box. The Sequent Symmetry boxes did 64CPUs a long time before Sun had it. Sun are actually playing catchup here, not intel land. P. |
#9
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Paul S Brown writes:
Anthony Mandic wrote: Why don't you get back to us when they have more than 100. Of course, by that time, Sun will have raised the bar yet again. Is 9632 processors big enough? ASCI Red is based on Pentium Pro processors and has been out for a few years. Where can I buy these? Experimental platform don't count. Bye, Dragan -- Dragan Cvetkovic, To be or not to be is true. G. Boole No it isn't. L. E. J. Brouwer |
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Dragan Cvetkovic wrote:
Paul S Brown writes: Anthony Mandic wrote: Why don't you get back to us when they have more than 100. Of course, by that time, Sun will have raised the bar yet again. Is 9632 processors big enough? ASCI Red is based on Pentium Pro processors and has been out for a few years. Where can I buy these? Experimental platform don't count. Next he'll try and claim that x86 has been 64-bit for years longer that the UltraSparcs. Perhaps he should try for Nintendo. Heck, even they've been 64-bit for longer than Intel. -am © 2003 |
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