Jaguar
| Jaguar |
- Jaguar
- Jaguar is a Cray XT4 system. It is provided as a primary system in the Leadership Computing Facility (LCF).
- Jaguar has a total of 7,832 XT4 compute nodes in addition to input/output (I/O) and login service nodes. Each compute node contains a quad-core 2.1 GHz AMD Opteron processor and 8GB of memory. Aggregate system performance is approximately 263 TF. Approximately 600 TB are available in the scratch filesystems. The service nodes consist of a 2.6 GHz dual-core AMD Opteron processor with 8 GB of memory.
- The compute nodes are running the Compute Node Linux (CNL) OS. CNL is designed to minimize system overhead, thus allowing scalable low-latency global communication.
- Each node is connected to a Cray SeaStar router through HyperTransport, and the SeaStars are all interconnected in a 3-D-torus topology. The resulting interconnect has very high bandwidth, low latency, and extreme scalability.
- Quad-Core Upgrade
- After completing the quad-core upgrade, jaguar was returned to general availability at 08:00 on Monday, May 12. While use of the system will be similar to jaguarcnl and the 119 TF dual-core jaguar system, there are several important differences which may be found on the Differences Between Dual-Core and Quad-Core Usage page.