| Sun Constellation Cluster Hardware |
Specifications of the interim (Sep-Dec 2009) Sun Constellation Cluster:
- a high density integrated system
- 192 nodes in Sun X6275 blades, each containing:
- two quad-core 2.93GHz Intel Nehalem cpus with
6.4GTs QPI bus
- L1 cache (on chip): 32KB (I) + 32KB (D)
L2 cache (on chip): 256KB
L3 cache (on chip): 8MB per quad-core cpu
- 24Gbyte DDR3-1333 memory
- 24GB Flash DIMM for swap and some job scratch
- on-board QDR InfiniBand adapter
- Aggregate Specfprate_base_2006 of (compute nodes only)
32000 (AC was around 20000)
Peak theoretical performance of approximately 18TFlops.
- Total of 4.6TB of RAM on compute nodes
- Dual socket, quad-core Sun X4170 servers for
Lustre fileserving
- Approx 100 TBytes of global user storage using 8
Sun J4400
JBOD trays each with 24 1TB Seagate Enterprise SATA drives
- 288 ports of a QDR Sun Datacenter InfiniBand Switch 648
for both MPI and Lustre filesystem traffic:
Measured MPI Latency: 2.0us
Measured MPI Bandwidth: > 2400MB/s per node
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