| CPU |
64-bit AMD Opteron 100
series processors; up to 96 per cabinet |
| Cache |
64K L1 instruction cache,
64K L1 data cache, 1 MB L2 cache per processor |
| FLOPS |
460 GFLOPS per cabinet (96
processors @ 2.4 GHz) |
| Main
Memory |
1-8 GB Registered ECC SDRAM
per processor. Supports Chipkill™ |
| Memory
Bandwidth |
6.4 GB/s per processor |
| Interconnect |
1 Cray SeaStar routing and
communications ASIC per Opteron processor |
| 6
switch ports per Cray SeaStar chip, 7.6 GB/s each |
| (45.6
GB/s switching capacity per Cray SeaStar chip) |
| 3
dimensional torus interconnect |
| 3
microsecond MPI latency between PEs |
| External I/O |
2 independent 64-bit 133
MHz PCI-X buses per service PE |
| Gigabit
Ethernet PCI-X card (copper and optical) |
| Dual-Port
2 GB/s Fibre Channel Host Bus Adapter (optical) |
| 10
Gigabit Ethernet card (Optical) |
| Disk |
4 and 8 port Fibre Channel
RAID controllers |
| Configurable
Fibre Channel RAID drive sets |
| File
System |
Lustre File System |
| System Administration |
Cray System Management
Workstation (SMW) |
| Graphical
and command line system administration |
| Single
system view for system administration |
| PBS
Pro job management system |
| Hot
Swap support for system blades |
| System
software rollback capability |
| Reliability Features (Hardware) |
Cray RAS and Management
Subsystem (CRMS) with independent 100Mbits/s management fabric between all
system blades and cabinet level controllers. Over 50 measurement points
monitored per Cray XT3 system blade |
| Full
ECC memory protection from memory to system registers. Chipkill memory
protection on all system memory DIMMs |
| Full
ECC protection in the Cray SeaStar chip |
| Cray
XT3 interconnect routes around failures, supports graceful link degradation
in case of partial |
| link
failure |
| Redundant
power supplies |
| Redundant
voltage regulator modules (VRMs) |
| Redundant
paths to all system RAID |
| Variable
speed blowers with integrated pressure and temperature sensors |
| Hot
Swap system blades |
| Reliability Features (software) |
Simple, microkernel-based
software design |
| CRMS
system monitors operation of all operating system kernels |
| Lustre
file system object storage target failover; Lustre metadata server failover |
| Software
failover for critical system services including system database, system
logger, and batch subsystems |
| Operating
System |
UNICOS/lc—Components
include SUSE™ LINUX™, Cray Catamount Microkernel, CRMS and SMW software |
| Message
Passing Libraries |
MPI 2.0, SHMEM |
| Compilers |
Fortran 77, 90, 95; C/C++ |
| Power |
14.8 kVA (14.5 kW) per
cabinet. Circuit Requirement: 80 AMP at 200/208 VAC (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) |
| Acoustical
Noise Level |
75 dba at 3.3 ft (1.0 m) |
| 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 |
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