Sun has a 8 socket AMD machine: http://www.sun.com/servers/x64/4600/
Tyan has a 8 socket opteron server too: http://www.tyan.com/product_barebones_detail.aspx?pid=338 IBM has some 8+ socket x86 systems, it seem they use a NUMAlink like interconnect called ex4: http://www-03.ibm.com/systems/x/hardware/enterprise/index.html HP has 8 socket opteron systems too: http://h10010.www1.hp.com/wwpc/us/en/en/WF04a/15351-15351-3328412-241644-3328423.html There are some high end x86 systems from UNISYS too, but beyond that I think you will have to look for RISC systems. 2008/10/17 Prentice Bisbal <[EMAIL PROTECTED]> > andrew holway wrote: > > Hi > > > > If you wanted to buy an smp machine of 8, 16 or 32 sockets, what would > > be your options? > > > > Do you really mean SMP, or just 8, 16, or 32 nodes in the same box, > running a single system image (SSI) of the OS? > > Having a system with 8, 16, or 32 sockets does not necessarily equal > SMP. Any Opteron based multiprocessor system is actually a NUMA system, > since each Opteron has it's own memory controller on-chip and own bank > of DIMMs. > > <aside> > To split hairs, in a system with multi-core Opterons, the cores on a > single chip are SMP relative to each other, since they all use the same > memory controller, and have equal access to the RAM directly controlled > by that memory controller. But once they access RAM from another chip > (different socket), it becomes a NUMA situation. (Is there a name for > this hybrid architecture?) > </aside> > > If you just want an SSI, and NUMA is acceptable, you can look at the SGI > Altix systems. They use SGI's NUMAlink (TM) Architecture to scale up the > # of processors while behaving as a single NUMA system. The first Altix > systems used Itanium processors which aren't binary compatible with x86 > processors (a real inconvenience) if you were planning on running > commercial, binary-only x86 software) but there are newer Altix systems > (XE series) that use x86-based processors. > > http://www.sgi.com/products/servers/altix/xe/ > > If you want that many processors in a single system, you probably do > want NUMA, since the single memory controller for that many processors > will become a bottleneck. > > -- > Prentice > _______________________________________________ > Beowulf mailing list, [email protected] > To change your subscription (digest mode or unsubscribe) visit > http://www.beowulf.org/mailman/listinfo/beowulf >
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