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2010 Sonoma Cable Panel - PowerPoint PPT Presentation
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2010 Sonoma Cable Panel. Moving to FDR and EDR Speeds and Exascale Computing. Moderator: Rupert Dance Date: 3/15/2010. Panelists. Cinch Cables Merrick Moeller: mmoeller@email.cinch.com FCI Jim David: jim.david@fci.com Mellanox John Monson: jmonson@mellanox.com Luxtera
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2010 Sonoma Cable Panel
Moving to FDR and EDR Speeds and Exascale Computing
Moderator: Rupert Dance
Date: 3/15/2010
www.openfabrics.org
Panelists
- Cinch Cables
- Merrick Moeller: mmoeller@email.cinch.com
- FCI
- Jim David: jim.david@fci.com
- Mellanox
- John Monson: jmonson@mellanox.com
- Luxtera
- Marek Tlalka: mtlalka@luxtera.com
- Molex
- Jay Neer: jneer@molex.com
- Volex
- Toney Chew: Toney.Chew@volex.com
www.openfabrics.org
Agenda
- InfiniBand Road Map
- Current Market conditions
- Connectors
- Cables
- Specification & Design Considerations
- Deployment Issues
- Compliance and Interoperability Testing
www.openfabrics.org
InfiniBand Roadmap
www.openfabrics.org
Current Market conditions
- Connectors
- MicroGiGaCN (aka CX4) – 4X SDR and DDR
- QSFP 4X SDR, DDR and QDR, 8X QDR and 12X QDR
- CXP – 12X QDR
- Cables using QSFP connectors
- Passive Copper – up to 7 meters in length
- Active Copper – up to 15 meters in length
- Active Fiber – up to 300 meters in length
- Multi-Mode Fiber cables up to 100 meters
- Single-Mode Fiber cables up to 4 kilometers
- Gauge – copper cables
- 24 AWG for max length
- 32 AWG minimum gauge – used in 3 meters and less
www.openfabrics.org
Connectors - FDR (14G) & EDR (25G)
- QSFP Connectors
- Can QSFP support FDR
- Can QSFP support any higher speeds
- CXP Connectors
- Can CXP support FDR
- Can CXP support EDR
- 4x Connectors for EDR
- What is required for 4X connectors to support 25G speeds
www.openfabrics.org
Cable requirements for EDR
- Cable design goals
- Length supported
- Gauge supported
- Loss Budget
- Cross talk
- Insertion Loss
- Return Loss
- Manufacturing issues
- Product Mix
- Copper versus Fiber
- Active versus passive
www.openfabrics.org
Specification & Design Considerations
- Convergence of IB and Ethernet specification
- Leverage volumes across markets for reduced cost
- IB specification for optical connectors for EDR
- Current IB spec does not cover optical spec
- Currently working with OIF
- Compatibility and legacy support
- 8b/10b versus 64b/66b
- What laser technology will be used for EDR
- VCSEL vs. EML lasers
- Link Integrity Issues
- DDR and QDR - lessons learned
- Allocating overall loss budget
- Attenuation based tuning
- Importance of EEPROM programming
www.openfabrics.org
Deployment Issues
- Power requirements
- Cooling requirements
- Exascale Computing with 10,000+ nodes
- Cable management
- Distance limitation
- Other Considerations
- Cost
- 2011 EDR availability
www.openfabrics.org
Compliance and Interoperability
- Compliance test methodology
- TDR versus VNA
- WDP – pros and cons
- IEEE 802.3ba
- System Interoperability testing
- End to end testing
- Switch to Switch testing
- Short trace and long trace testing
- Heterogeneous testing
- MPI based Interop testing
www.openfabrics.org
- Module Compliance Board (MCB)- (1) Req’d if testing with HCB- (2) Req’d if testing with Cables
- Host Compliance Board (HCB)
www.openfabrics.org
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Cable Sponsors of the OFA Workshop
www.openfabrics.org
Mellanox Vendor Presentation
www.openfabrics.org
Addressing High Bandwidth Cable Challenges
Author: John Monson
Date: March 15, 2010
www.openfabrics.org
Challenge – Cabling at 14Gb/s
- Today’s QSFP suitable for FDR
- Target lengths
- Passive copper up to 5 meters
- Active copper up to 10 meters
- Optical up to 100 meters
- Active cable power similar to QDR
- Cable plants will look similar to today’s QDR clusters
www.openfabrics.org
Challenge – Cabling at 26Gb/s
- Enhanced QSFP required for EDR
- Need to improve insertion loss
- Optimize impedance matching
- Target lengths
- Passive copper up to 3 meters
- Active copper up to 7-10 meters
- Optical up to 100 meters
- Power targets not significantly higher than QDR
- More clusters will now require active cables
www.openfabrics.org
Total Solution Required
- I/O drivers must consider media type and length
- Transmitter must compensate for signal degradation over copper
- Receiver must compensate with increased sensitivity
- EDR will require better PCB material
- Switch traces up to 17 inches
Molex Vendor Presentation
www.openfabrics.org
InfiniBand Interconnect Infrastructure
Scaling the Current Ecosystem to 25G
Jay Neer
Strategic Product Manager – Industry Standards
March 14, 2010
www.openfabrics.org
The Highest Density I/O Solutions
RJ-45 48 Channels
480 Gb/s
SFP+ 48 Channels
480 Gb/s
SFP+ 48 Channels
480 Gb/s
MicroGiga 112 Ch.
1120Gb/s
iPass 160 Channels
1600 Gb/s
QSFP+ 144 Channels
1440 Gb/s
MicroGiga – 192 Ch.
960 Gb/s
CXP – 384 Channels
3840 Gb/s
www.openfabrics.org
20
- Single SMT Connector
- Single Cage
- Ganged Cages
- Stacked, Ganged Cages
- Light Pipe Options
- Thermal Options
- EMI Solution Options
- Direct Attach Copper Cables
- Copper SFP+ Breakout Cables
- Copper Loopbacks
- 12 Fiber MTP Optical Cables
- Optical LC Breakout Cables
- Optical Loopbacks
www.openfabrics.org
- The QSFP+ optical cable interface is defined as the industry standard 12 fiber MTP connector
- Round bulk cable provides improved cablemanagement within a rack
- 3mm diameter cable for short runs
- 4.5mm diameter for runs up to 25 meters
- The cable assembly utilizes the exterior 4 fibers
on each side of a 12 fiber ribbon cable; bulk cable with the center 4 fibers missing is also acceptable
- Breakout cables to LC cables are used to connect to SFP+ applications
www.openfabrics.org
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World’s Largest InfiniBand Switch
3,456 InfiniBand Channels per System
with CXP 12x I/O’s
www.openfabrics.org
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- Ecosystem Shipping:
- Single Integrated Connector
- Stacked Integrated Connectors
- Light Pipe Options
- Thermal Options
- EMI Solution Options
- Direct Attach Copper Cables
- Copper QSFP+ Breakout Cables
- Copper Loop-backs
- 24 Fiber MTP Optical Cables
- Optical QSFP+ Breakout Cables
www.openfabrics.org
25
CXP / CXP
CXP / MicroGiga 12x
CXP / QSFP+
CXP / MicroGiga 4x
www.openfabrics.org
26
CXP / QSFP
CXP / CXP
Pluggable Optical Module w/ Passive Optical Cable Assembly
www.openfabrics.org
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Access area to Top of Plug
12x CXP Family of Products
Thermal Solutions
Heat Sinks Optional & Application Dependent- Can be extended to the rear or to the sides- Can be square or round pins or fins- Heights based on application
Clip-on Cover w/vent holes StandardCapable of cooling 1-1.5W Devices
www.openfabrics.org
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CXP Development / Compliance / Test Boards
- Module Compliance Board (MCB)- (1) Req’d if testing with HCB- (2) Req’d if testing with Cables
- Host Compliance Board (HCB)
www.openfabrics.org
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