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10-Gigabit Ethernet Network Adapter
Manual de usuario
SGI 10-Gigabit Ethernet Network Adapter Manual de usuario Pagina 72
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Inactive
Links
CCGrid '11
Subnet Manager
Active
Links
Compute
Node
Switch
Subnet
Manag
er
Inactive
Link
Multicast
Join
Multicast
Setup
Multicast
Join
Multicas
t
Setup
72
1
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A Tutorial at CCGrid ’11
1
Computing Systems
3
Cluster Computing Environment
4
(http://www.top500.org)
5
Grid Computing Environment
6
Compute cluster
8
Cloud Computing Environments
9
Hadoop Architecture
10
Memcached Architecture
11
• Hardware components
13
• Software components
13
• Ex: TCP/IP, UDP/IP
14
– E.g., PCI, PCI-X
15
– One bit per wire
15
– Not scalable:
15
Myrinet (1993 -) 1 Gbit/sec
16
IB Trade Association
19
• Network speed bottlenecks
21
• I/O interface bottlenecks
21
(not shown)
24
• Fast Messages (FM)
27
• Myricom GM
27
IB Hardware Acceleration
28
• Interrupt Coalescing
29
• Jumbo Frames
29
• Hardware Checksum Engines
29
TOE and iWARP Accelerators
30
2006 (v3.0), 2008 (v3.1)
34
PCI-Express (PCIe)
34
2003 (Gen1), 2007 (Gen2)
34
IB, HSE and their Convergence
36
Traditional Ethernet
37
IB Overview
38
Components: Channel Adapters
39
• Switches: intra-subnet
40
– Not directly addressable
41
IB Communication Model
43
Queue Pair Model
44
Memory Registration
45
Memory Protection
46
(Send/Receive Model)
47
InfiniBand Device
48
Hardware ACK
48
Hardware Protocol Offload
51
• Buffering and Flow Control
52
• Switching and Multicast
52
Buffering and Flow Control
53
Virtual Lanes
54
Service Levels and QoS
55
Traffic Segregation Benefits
56
Identifiers)
57
Switch Complex
58
– 3D Torus (Sandia Red Sky)
59
More on Multipathing
60
IB Multicast Example
61
IB Transport Services
63
Reliability
64
Transport Layer Capabilities
65
Data Segmentation
66
Transaction Ordering
67
Message-level Flow-Control
68
Concepts in IB Management
71
Subnet Manager
72
HSE Overview
74
Differences
75
– Multi Stream Semantics
76
Offloaded TCP
83
Myrinet Express (MX)
85
Datagram Bypass Layer (DBL)
86
• Solarflare approach:
87
Ethernet
90
IB Network
90
IB Verbs
90
Application
90
Hardware
90
IB Transport
91
IB iWARP/HSE RoE RoCE
92
IB Hardware Products
94
Tyan Thunder S2935 Board
95
IB Hardware Products (contd.)
96
– Nortel Networks
97
• Support for VPI and RoCE
98
– www.openfabrics.org
99
– OFED 1.6 is underway
99
Verbs Interface
100
(libibverbs)
100
• Within the hardware:
101
OpenFabrics Software Stack
102
InfiniBand in the Top500
103
Cray Interconnect
104
NUMAlink
104
SP Switch
104
CCGrid '11
106
• Other small clusters
107
• Integrated Systems
107
Other HSE Installations
108
Presentation Overview
109
1/10 GigE
110
InfiniBand
110
Case Studies
111
Latency (us)
112
Message Size (bytes)
112
Bandwidth (MBps)
113
MVAPICH/MVAPICH2 Software
115
One-way Latency: MPI over IB
116
Bandwidth: MPI over IB
117
Bandwidth: MPI over iWARP
119
Convergent Technologies:
121
Traditional Model
123
Possible SDP Model
123
InfiniBand CA
123
SDP vs. IPoIB (IB QDR)
124
IB on the WAN
126
Features
127
• Supports SONET OC-192 or
128
“appear” local
128
Sunnyvale
129
700 miles
130
3300 miles 4300 miles
130
Cluster B
131
Communication Options in Grid
132
Interface
133
Modern WAN
133
Performance of Memory Based
134
Data Transfer
134
ADTS-64MB
135
IPoIB-64MB
135
Application Level Performance
136
Memcached Design Using Verbs
139
Memcached Get Latency
140
Memcached Get TPS
141
Bandwidth with C version
142
Hadoop Sort Benchmark
145
Concluding Remarks
147
Funding Acknowledgments
148
Personnel Acknowledgments
149
Web Pointers
150
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