aka: Shared Memory System I
|This computer, operated at LRZ between 2002 and 2006, served commercial AIX-applications as well as serial or parallel programs with high memory requirements. The platform served also as a successor of memory-server-nodes, formally accessable at IBM-SP2.|
Fields of application:
Hardware and Operating Environment
For computing tasks with very high memory requirements and for running commercial applications not available for other LRZ platforms an 8-way IBM p690 "Regatta " Symmetric Multiprocessor is now available. It contains eight Power 4 processors running at 1.3 GHz; Peak performance per processor is 5.2 GFlop/s, hence that of the complete machine is 41.6 GFlop/s, of which presently 75-80 % can be obtained for optimally tuned code. For production code the usual efficiency will probably be around 15 %. All processors are equipped with 32 kB 1st level data cache and 1440 kB 2-nd level cache. The 8 processors share 256 MB of Level 3 cache;
The machine has a memory capacity of 32 GB; batch jobs as well as interactive programs will run simultaneously.
The machine was run under AIX 5.1.