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SGI Origin 3800 Hardware 
The SGI Origin 2000 (k2.tamu.edu) arrived at Texas A&M University on
May 29th. The system is currently up and running
with 48 CPUs and 48GB of main memory. The system is also configured with
1200GBs of disk space. The Origin 3800 is a distributed memory cc-NUMA
architecture based machine.
K2 is composed of 12 node cards. Each node card in turn is composed of 4 R14000 processors running at 500 MHZ and each node card also has 4GBs of memory. Each processor has associated with it 8MB of L2 cache. While the main memory is distributed across the 12 node boards, it is accessible to and shared by all the processors. To a processor, main memory appears as a single addressable space. However the latency for memory access by a processor to memory on the node board on which the processor resides is less than the latency for memory access by a processor to memory on a node board different from the one on which the processor resides. It is from this disparity in memory access times that the acronym NUMA (non-uniform memory access) derives.
Aside from 2 system drives, all drives on the system are attached to fibre channel (100 MB/s) RAID controllers which allow for faster data throughput. The system is currently attached to a gigabit ethernet network and will eventually be connected to a ATM network.
| Hostname: | k2.tamu.edu | titan.tamu.edu |
| Vendor: | Silicon Graphics Incorporated | Silicon Graphics Incorporated |
| Model: | Origin 3800 | Origin 2000 |
| Processor: | MIPS RISC R14000 Superscalar | MIPS RISC R10000 Superscalar |
| Processor Clock Rate: | 500 MHz (2 nano-second) | 250 MHz (4 nano-second) |
| Processor Integer Speed: | 1000 MIPS | 500 MIPS |
| Processor Floating Speed: | 1000 MegaFLOPS | 500 MegaFLOPS |
| No. of Processors: | 48 | 32 |
| Processor Internal Cache: | 32K Instruction, 32K Data | 32K Instruction, 32K Data |
| Processor External Cache: | 8 Megabyte | 4 Megabyte |
| Main Memory: | 48 Gigabytes | 8 Gigabytes |
| Disk Space: | 1200 Gigabytes | 270 Gigabytes |
| Network Interface: | Gigabit Ethernet |
Fast Ethernet |
| Interface Data Rate: | 1000 Megabits/second | 100 Megabits/second |