What Is Optical Module Channel Loss Resistance?
In AI cluster training, optical module failure is one of the major causes of training interruptions. To address this issue, Huawei launches the optical module channel loss resistance technology. When a single channel of an optical module is faulty, the computing network collaborates to reduce the rate, ensuring uninterrupted AI training.
Why Do We Need Optical Module Channel Loss Resistance?
In AI training, thousands of or even tens of thousands of computing cards work together to complete a single training task. A single fault can interrupt the entire training task. Optical modules are key to ensuring training stability.
The annual failure rate of traditional optical modules can be as high as 4‰. Using a cluster of over 10,000 computing cards as an example, each year, about 60 training interruptions are caused by optical module failures, about 90% of which are single-channel faults. Frequent training interruptions not only seriously affect training efficiency, but also increase maintenance and time costs. To address this issue, the optical module channel loss resistance technology is required. This technology can significantly reduce the optical module failure rate and ensure the continuity of training tasks, eventually ensuring efficient system operations and improving the overall reliability and stability of the network.
What Are the Advantages of Huawei Optical Module Channel Loss Resistance Technology?
Huawei's optical module channel loss resistance technology ensures uninterrupted data forwarding upon a single-channel fault, preventing training interruptions from being caused by single-channel faults of optical modules.
- Using Huawei's 400GE SR8 optical module as an example, with the lane downgrade technology of the optical module, two channels form a group. When a channel is faulty, only its channel group stops working, and other channel groups can continue to forward packets.
- With Huawei's optical module channel loss resistance technology, the annual failure rate of optical modules can be reduced from 4‰ to 0.4‰. This means the number of interruptions incurred in a cluster of over 10,000 computing cards can be reduced from 60 to 6 each year, delivering 10 times higher network stability.
Comparison of single-channel faults between the industry's and Huawei's optical modules
Comparison between the annual failure rate of optical modules and between the number of interruptions in a cluster of over 10,000 computing cards
- Author: Wang Wenbo
- Updated on: 2024-12-20
- Views: 1861
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