TOW Overview
| Manufacturer | SGI |
|---|---|
| Model | Altix ICE 8200 |
| Theoretical Peak | 74.5 TFlops |
| Cores | 6,656 2.8 GHz Intel Nehalem |
| Memory | 52.2 TB |
| Local System Disk | 400 TB |
| Operating System | SLES 10 SPA |
| Internal Network | 4X DDR Infiniband |
TOW is comprised of five different types of nodes: compute, analysis, storage, login, and management. All nodes contain 2 Intel Xeon Nehalem-EP quad-core processors, 8 MB of Level 2 cache and 24 GB of ECC-protected memory. All nodes have 2.8 GHz processors. The 1,664 compute nodes total 6,656 cores and 52.2 TB of memory with a peak system performance of 74.5 Teraflops. All compute nodes have a high-speed Infiniband interconnect which offers 4 Gbps bandwidth into and out of each node. The interconnect is non-blocking and supports MPI communications. The storage nodes provide the cluster with an aggregate of 568 TB total disk space, divided among 5 files systems that are globally accessible and offer scalable parallel performance the Lustre file system.
All nodes share a gigabit Ethernet network which provides a high-performance communications conduit between the storage nodes and the compute and login nodes. A 10 gigabit Ethernet connects to the ARL DSRC backbone network, providing a high-performance path to the mass storage archival system.
Login nodes
All logins to TOW must be done using the designated login nodes: tow-l[1-8]