OCP NIC Community Update�August 2023

�����Sub-group Project wiki: https://www.opencompute.org/wiki/Server/NIC�

Mailing List: https://ocp-all.groups.io/g/OCP-NIC

Agenda

• TSFF TTF challenge and solution proposal
• OCP Global Summit – Break-out session
• OCP Global Summit – Experience Lab
• SI test fixture
• PCIe Gen6 discussion
• Dual-wide SFF

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Thermal Test Fixture for TSFF feedbacks

Faceplate modification that includes side holes for airflow

Aligned the opening holes shall match OCP spec at 72.8 +/- 0.25mm

OCP Global Summit 2023

October 17 to 19: San Jose Convention Center

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Break-out session/Presentation:

2 abstracts tentatively accepted

• OCP NIC in 2023: 800G, PCIe Gen6 & Test Integration
• Ensuring Predictable Thermal Performance for Higher Speed OCP 3.0 NICs

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Experience Lab demo:

Request for space approved

Broadcom, Dell, Meta interested

Would like to see more companies participate in demo

SI Test Fixtures

CLB 5.0 32GT/s status:

• Dell to present at IC meeting to release design to Wiki

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CBB 5.0 32GT/s status:

• Assembled units arrived – testing in progress
• PCB material exposed a solder mask issue with MMPX connectors; layout revised.

Jason

OCP NIC 3.0 SFF CBB 5.0 block diagram

SIWG for PAM4 Gen6 spec

Xtalk spec to meet BER requirement

• SFF-TA-1002 proposal(rev 1.4.1) in progress, will leverage
• SFF-TA-1009 proposal(rev 3.1.1) for device spec
• WIP to check for channel simulations
• Working with device vendor to meet Rx spec

Anthony/Tanmoy

Connector Spec

Channel Simulation

Based on Gen5 models as same Nyquist for Gen6

• Root complex/Switch ~ 20dB + Package model
• AIC/OCP ~7dB + package model
• Tighter PSNEXT proposal (-60dB @16Ghz), ccICN comparison
• Gen5 models are close to meet the spec

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Anthony/Tanmoy

Straddle Mount

AIC/OCP

Smart NICs - LFF vs SFF

SFF and LFF are not plug-compatible

Platforms and adapters are commonly SFF today

Ideas: Double-SFF (D-SFF) which fits into two SFF slots

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Requires Different Connector

New DSFF

Uses same connectors

Motherboard with 1x LFF

Motherboard with 2x SFF

SFF

SFF

LFF

Arnon

Idea - Double SFF for Smart NICs

Spans over two 4C+ connectors

Spaced per M-FLW HPM specification

Regular and Tall options

160 Watt

x32 PCIe lanes

13% more board space than LFF

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Opens:

• Management scheme
• Latching mechanism
• More

Illustration

Arnon

Gather feedback throughout the year

Provide your feedback at:�https://tinyurl.com/feedback2ocpnic

SmartNIC Summit

• SmartNIC Summit June 13-15, 2023 held in San Jose, CA
• Special session for OCP to share OCP NIC on June 15 10.50-11.00am
• Nvidia/Elad would represents to present

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