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System Architecture
007-5832-001 37
System Architecture
The SGI UV 2000 computer system is based on a distributed shared memory (DSM) architecture.
The system uses a global-address-space, cache-coherent multiprocessor that scales up to 512
processor cores in a single rack. Because it is modular, the DSM combines the advantages of lower
entry cost with the ability to scale processor count, memory, and I/O independently in each rack.
Note that a maximum of 2,048 cores are supported on a single-system image (SSI). Larger SSI
configurations may be offered in the future, contact your SGI sales or service representative for
additional information.
The system architecture for the SGI UV 2000 system is a sixth-generation NUMAflex DSM
architecture known as NUMAlink 6 or NL6. In the NUMAlink 6 architecture, all processors and
memory can be tied together into a single logical system. This combination of processors,
memory, and internal switches constitute the interconnect fabric called NUMAlink within and
between each 10U IRU enclosure.
The basic expansion building block for the NUMAlink interconnect is the processor node; each
processor node consists of a dual-Hub ASIC (also known as a HARP) and two eight-core
processors with on-chip secondary caches. The Intel processors are connected to the dual-Hub
ASIC via quick path interconnects (QPIs). Each dual-HUB ASIC is also connected to the system’s
NUMAlink interconnect fabric through one of sixteen NL6 ports.
The dual-Hub ASIC is the heart of the processor and memory node blade technology. This
specialized ASIC acts as a crossbar between the processors and the network interface. The Hub
ASIC enables any processor in the SSI to access the memory of all processors in the SSI.
Figure 3-3 on page 38 shows a functional block diagram of the SGI UV 2000 series system IRU.
System configurations of up to four IRUs can be constructed without the use of external routers.
Routerless systems can have any number of blades up to a maximum of 32. Routerless system
topologies reduce the number of external NUMAlink cables required to interconnect a system.
External optional routers are needed to support multi-rack systems with more than four IRUs, see
Chapter 5, “Optional Octal Router Chassis Information” for more information.
- UV 2000 System User Guide 1
- Record of Revision 3
- Contents 5
- 007-5832-001 vii 7
- List of Figures 9
- List of Tables 11
- About This Guide 13
- Chapter Descriptions 14
- Related Publications 15
- Conventions 17
- Product Support 18
- Reader Comments 18
- 1. Operation Procedures 19
- Power Connections Overview 20
- 007-5832-001 3 21
- 1 (on) position 21
- 4 007-5832-001 22
- 1: Operation Procedures 22
- 007-5832-001 5 23
- 6 007-5832-001 24
- System Connections Overview 25
- System Controller Access 26
- 007-5832-001 9 27
- Using a Static IP Address 28
- System Control Overview 30
- 007-5832-001 13 31
- The Command Line Interface 32
- Command Options for Power On 33
- 16 007-5832-001 34
- Booting Directly From a CMC 35
- 18 007-5832-001 36
- , as follows: 37
- \efi\SuSE\elilo 37
- Power off a UV System 38
- 22 007-5832-001 40
- Optional Components 41
- 24 007-5832-001 42
- 2. System Control 43
- 26 007-5832-001 44
- 2: System Control 44
- CMC Overview 45
- 28 007-5832-001 46
- System Controller Interaction 47
- IRU Controllers 48
- 007-5832-001 31 49
- 32 007-5832-001 50
- 3. System Overview 51
- SGI UV 2000 52
- System Models 53
- (System Management Node) 54
- 1U (I/O) Expansion Slot 54
- System Architecture 55
- IRU Backplane Connections 56
- Backplane 56
- System Features 57
- TOP NODE PCA 58
- HARP PCA 58
- BOTTOM NODE PCA W/BMC 58
- Distributed Shared I/O 59
- 42 007-5832-001 60
- 3: System Overview 60
- 007-5832-001 43 61
- System Components 62
- 007-5832-001 45 63
- Bay (Unit) Numbering 64
- Rack Numbering 64
- Optional System Components 64
- 4. Rack Information 65
- SGI UV 2000 Series Rack (42U) 66
- Characteristic Specification 70
- Overview 71
- 54 007-5832-001 72
- 007-5832-001 55 73
- ORC chassis 74
- 6. Add or Replace Procedures 75
- 58 007-5832-001 76
- 6: Add or Replace Procedures 76
- 007-5832-001 59 77
- SGI x16 PCIe 78
- Connectors 78
- Support levels in 78
- 62 007-5832-001 80
- 007-5832-001 63 81
- 64 007-5832-001 82
- 007-5832-001 65 83
- Chapter 7 85
- Troubleshooting Chart 86
- LED Status Indicators 87
- Compute/Memory Blade LEDs 88
- SGI Electronic Support 89
- 72 007-5832-001 90
- 007-5832-001 73 91
- System-level Specifications 93
- Physical Specifications 94
- Environmental Specifications 95
- Power Specifications 96
- I/O Port Specifications 97
- Pin Number Function 98
- Ethernet Port 99
- Serial Ports 100
- Pin Assignment Description 101
- USB Type A Connector 102
- Safety Information 103
- 86 007-5832-001 104
- Regulatory Specifications 105
- Electromagnetic Emissions 106
- Equipment Regulations 107
- Shielded Cables 108
- Electrostatic Discharge 108
- Laser Compliance Statements 109
- Lithium Battery Statement 110
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