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Tesla Transport Protocol over Ethernet (TTPoE)

167 pointsby super_linear9 months ago

11 comments

throw0101a9 months ago
Previous discussion from ~month ago, &quot;Tesla’s TTPoE at Hot Chips 2024: Replacing TCP for Low Latency Applications&quot;:<p>* <a href="https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=41374663">https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=41374663</a><p>* <a href="https:&#x2F;&#x2F;chipsandcheese.com&#x2F;2024&#x2F;08&#x2F;27&#x2F;teslas-ttpoe-at-hot-chips-2024-replacing-tcp-for-low-latency-applications&#x2F;" rel="nofollow">https:&#x2F;&#x2F;chipsandcheese.com&#x2F;2024&#x2F;08&#x2F;27&#x2F;teslas-ttpoe-at-hot-ch...</a>
nimbius9 months ago
Tesla seeks to work to standardize a new high-speed&#x2F;low-latency fabric (be that TTPoE or otherwise) for AI&#x2F;ML&#x2F;Datacenters however theres nothing inherently abject about TCP as it exists today. RDMA over Converged Ethernet suffices perfectly well for whatever an &quot;AI&#x2F;ML&#x2F;Datacenter&quot; is and if we&#x27;re being fair, the lackadaisical approach to the documentation suggests that they may not be taking it as seriously as they could anyway.<p>If Tesla were really seeking to shake things up they wouldnt have picked IPv4 to do it when the newest release has been around for nearly 30 years and has latency reduction baked in.<p>this smacks of a pandersome attempt from a company that sees the quite mandarin writing on the walls and has decided (in true Muskovite fashion) they too are just a misunderstood font of futurism.
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digitallis429 months ago
I did a skim and didn&#x27;t see any explanation of why one would want it over TCP. Did I miss, or is it non obvious?
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kardianos9 months ago
There was a talk about this prior. This was used in place of TCP, but where TCP is designed to run over unreliable networks, this protocol achieves speed and latency figures comparable to others, while still being able to retain commodity IP switches in the cluster. By having a fixed buffer, no lingers, faster opens, they increase the speed and latency, without going to dedicated vendors or other stacks.
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FuriouslyAdrift9 months ago
Be interesting to see how this stacks up to the dominant protocol in supercomputers&#x2F;ai clusters : Infiniband.
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electronbeam9 months ago
Is it missing a license?
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iamleppert9 months ago
How is this better than UDP? Or for that matter, just plain old Ethernet MAC addressing? You can achieve lower latency and speed (than this) if you don&#x27;t care about reliability in your transport layer.<p>This reaks of NIH.
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bilekas9 months ago
&gt; Some variables may have changed slightly without documentation updates, but we&#x27;re sure you can figure it out<p>I hope they&#x27;re not hoping for mass adoption with an attitude like that. Not exactly inspiring confidence in the longevity and maintainability.
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elcritch9 months ago
Twice now I’ve been excited that this was for realtime ethernet used in teslas vehicles. Alas, it is not.
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high_na_euv9 months ago
Really interesting
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KeepOnTruckin19 months ago
[flagged]
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