From mboxrd@z Thu Jan 1 00:00:00 1970 From: Luis Ponce de Leao Date: Wed, 15 Jul 1998 23:22:53 +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 Sun multi-processors systems and SGI Challenge are *SMP* systems, SGI Onyx and Origin as well as Cray T3D/E are distributed 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.