| Oracle/Sun Constellation Cluster Hardware |
Specifications of the NCI NF Oracle/Sun Constellation Cluster:
- a high density integrated system
- 1492 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
- 24Gbytes DDR3-1333 memory (48 nodes have 48 Gbytes DDR3-1333 and 4 nodes have 96 Gbytes DDR3-1066 memory)
- 24GB Flash DIMM for swap and some job scratch
- on-board QDR InfiniBand adapter
- Aggregate Specfprate_base_2006 of (compute nodes only)
250000 (AC was around 20000)
Peak theoretical performance of approximately 140TFlops.
- Total of 37TB of RAM on compute nodes
- 30 dual socket, quad-core Sun X4270 servers for Lustre fileserving
- Approx 800 TBytes of usable global storage using 52
Sun J4400
JBOD trays each with 24 1TB Seagate Enterprise SATA drives
- Four independent Sun DS648 Infiniband switches each with 432 QDR
IB ports for both MPI and Lustre filesystem traffic:
Measured MPI Latency: < 2.0us
Measured MPI Bandwidth: > 2800MB/s per direction per node
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