From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ward Deng Date: Tue, 21 Jul 1998 23:29:41 +0000 Subject: Re: Ultra AXmp Message-Id: List-Id: References: In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: ultralinux@vger.kernel.org On Thu, 16 Jul 1998, Luis Ponce de Leao wrote: > Date: Thu, 16 Jul 1998 00:22:53 +0100 (WET DST) > From: Luis Ponce de Leao > To: linux-smp@vger.rutgers.edu > Cc: ultralinux@vger.rutgers.edu > Subject: Re: Ultra AXmp > > > Sun multi-processors systems and SGI Challenge are *SMP* systems, > SGI Onyx and Origin as well as Cray T3D/E are distributed ^^^^^^^^ Onyx is an SMP system while Onyx-2 is the ccNUMA architecture. Onyx the workstation version of Challege while Onyx-2 is workstation version of Origin. NUMA architectue is pretty much SMP nodes with local memory inerlinked together. T3D/E, Paragon, CM-5 and n-CUBE are in another category. Traditionally they are called MPP (Massive Parallel Processor). They distributed memory systems with dedicated processor linkage. > memory systems, CC/NUMA (non-uniform memory access with cache > coherency) and SP2 is a message passing based systems, it's > simply a cluster of RS/6000 workstations connected by a very high speed > network. > > > On Wed, 15 Jul 1998, Ward Deng wrote: > > > > > What do you mean that? > > > > > > IBM RS6000/SP2 is distributed memory system, or workstations linked with > > > external high-speed switch. Sun's MP systems are all SMP design. SGI > > > Power Challenge or Onyx are SMP too. The newer SGI Origin is SMP with > > > special memory links -- ccNUMA. They are very different architectures > > > while SP nodes are no different from IBM's RS6000 workstations. >