Cray XMT

Specifications

CPU

500 MHz single 64-bit Cray Threadstorm Processor
128 threads per processor
4 or 8 GB per processor
AMD Opteron socket 940 compatible
96 CPUs per cabinet (max), 8,024 CPUs per system (max)

I/O

XMT I/O is controlled by specialized service nodes based on the AMD Opteron processor
I/O uses PCI-X interfaces associated with service nodes
2 Gb/s Fiber Channel disk interfaces to DDN and Engenio RAID systems
1 GbE and 10Gbe network connections

Compilers

C/C++ optimizing compiler developed by Cray to target the XMT instruction set architecture
Aggressive automatic parallelization capability
Support for various hierarchies of parallelization within a single processor and across multiple processors
Support for XMT extensions to ease parallel programming: sync, future variables, future statements, and pragmas
Tightly integrated with debugging and performance analysis tools

Power

15 - 22.5 kW (15.3 - 22.9 kVA) per cabinet, depending on configuration.
80 AMP at 200/208VAC (3 Phase & Ground), 63 AMP at 400 VAC (3 Phase, Neutral & Ground)

Cooling Requirement: Air Cooled, Air Flow: 3000 cfm (1.41 m3/s), Intake: bottom, Exhaust: top)

Dimensions (Cabinet): H 80.50 in. (2045 mm) x W 22.50 in. (572 mm) x D 56.75 in. (1441 mm)

Weight (Maximum): 1529 lbs per cabinet (694 kg)

Regulatory Compliance: UL 60950-1, CAN/CSA – C 22.2 No 60950–1, CB Scheme Investigation to IEC/EN 60950-1

Safety: FCC Class A, DOC Class A, VCCI Class, CISPR 22, EN 50022 Class A, AS/NZS 3548, EN 50082-1, EN 61000-3-2, EN 61000-3-3, Statskontoret 26.2 Category 1 IEC/EN 60950-1 FCC Class A, DOC Class A, VCCI Class, CISPR 22, EN 50022 Class A, AS/NZS 3548, EN 50082-1, EN 61000-3-2, EN 61000-3-3, Statskontoret 26.2 Category 1