the tiny corp

@__tinygrad__ · 28 mai 2026

tinygrad will write that C for you. Our new driver compiles all interaction with the GPU to C, so once it's running the CPU does next to nothing.

Elon Musk@elonmusk· 28 mai 2026

SpaceX has almost finished writing V1.0 of an in-house AI training stack in C that exact-maps to 220k GB300s with 800G NICs, making heavy use of pipeline parallelism and getting as close to bare metal as possible. The potential speed improvement vs JAX for large training runs is

Elon Musk

@elonmusk · 28 mai 2026

Agreed, the CPU cores on the GB300 should be tasked with agentic jobs. Very little of their compute is needed for GPU management.

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DonaldBest.CA * DO NOT COMPLY

@DonaldBestCA · 28 mai 2026

ust not be banned. Instead, all good citizens must have the right to possess and carry defensive weapons. The police will not be there to protect you or your children. Criminals will always be armed because they don't care about the law. Only a good armed citizen can prot

Elon Musk

@elonmusk · 28 mai 2026

Yes, allow the people to defend themselves

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Tim Pool

@Timcast · 28 mai 2026

So tell me Why has this not been stopped? Why is this just going to keep happening?

New York Post@nypost· 28 mai 2026

Four stabbed by knifeman shouting 'Allahu Akbar' at Switzerland train station in front of terrified children

Elon Musk

@elonmusk · 28 mai 2026

When is enough enough?

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Whole Mars Catalog

@wholemars · 28 mai 2026

Pure C > C++ Modern C++ is an abomination

Elon Musk

@elonmusk · 28 mai 2026

I agree

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Colin Wright

@SwipeWright · 27 mai 2026

ANNOUNCEMENT: WE’RE SAVING SCIENCE! We’re often told that science is “self-correcting.” But that’s not really true. Science doesn’t correct itself like a thermostat adjusting the temperature in your house. Science is a human institution run by human beings. And human beings

Elon Musk

@elonmusk · 28 mai 2026

True

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MichaeloKeeffe

@Mick_O_Keeffe · 28 mai 2026

🚨🇮🇪 BREAKING Asylum seeker arrested after woman was murdered in Galway this morning. The woman who was working at an IPAS centre, was stabbed multiple times in the neck.

Elon Musk

@elonmusk · 28 mai 2026

!!

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Matthew Prince 🌥

@eastdakota · 28 mai 2026

There’s a ton of headroom to better optimize AI training and inference.

Elon Musk@elonmusk· 28 mai 2026

SpaceX has almost finished writing V1.0 of an in-house AI training stack in C that exact-maps to 220k GB300s with 800G NICs, making heavy use of pipeline parallelism and getting as close to bare metal as possible. The potential speed improvement vs JAX for large training runs is

Elon Musk

@elonmusk · 28 mai 2026

Yes. It’s not that we’ve discovered some magic bullet, but rather that JAX, or at least the open source version of it, is mostly optimized for small to medium-sized training runs on Google TPUs, whereas we need to massive training runs on Nvidia GPUs. Pipeline parallelism is essential and crushes fully-sharded data parallelism at scale. And C will compile to the most efficient binary short of assembly. Maybe we will do a little assembly too.

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maharshi

@maharshii · 28 mai 2026

they made an in-house AI training stack from scratch in C as a hobby project

Elon Musk@elonmusk· 28 mai 2026

SpaceX has almost finished writing V1.0 of an in-house AI training stack in C that exact-maps to 220k GB300s with 800G NICs, making heavy use of pipeline parallelism and getting as close to bare metal as possible. The potential speed improvement vs JAX for large training runs is

Elon Musk

@elonmusk · 28 mai 2026

It’s essential or we simply cannot be competitive

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Robert Jenrick

@RobertJenrick · 28 mai 2026

Sorry isn’t good enough. We need to see the body-worn footage and these officers need to face consequences. The treatment of this murdered student, in his dying moments, is a national scandal.

Elon Musk

@elonmusk · 28 mai 2026

Absolutely

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Kazim Raza

@KazimAIZJU · 28 mai 2026

Makes sense for shaving latency in tight RL loops. Curious how you handle memory safety in C without the C++ guardrails

Elon Musk

@elonmusk · 28 mai 2026

With great {malloc} power comes great responsibility

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Claude

@claudeai · 28 mai 2026

Introducing Claude Opus 4.8: it builds on Opus 4.7 with sharper judgment, more honesty about its own progress, and the ability to work independently for longer than its predecessors. Available today at the same price.

Elon Musk

@elonmusk · 28 mai 2026

Nice work

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Basil the Great

@BasilTheGreat · 28 mai 2026

🚨BREAKING: HAMPSHIRE POLICE APOLOGISE FOR ARRESTING HENRY NOWAK AS HE DIED IN STREET Robert France, temporary deputy chief constable for Hampshire Police has said he's "sorry" his officers arrested Henry in the moments before he died NOT GOOD ENOUGH They must pay for their

Elon Musk

@elonmusk · 28 mai 2026

Not even close to good enough. Those officers committed a serious crime.

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ApoStructura

@ApoStructura · 28 mai 2026

I love that SpaceX is becoming the classic tech megacorp from sci fi. The only thing missing is a badass hq tower

Elon Musk@elonmusk· 28 mai 2026

SpaceX has almost finished writing V1.0 of an in-house AI training stack in C that exact-maps to 220k GB300s with 800G NICs, making heavy use of pipeline parallelism and getting as close to bare metal as possible. The potential speed improvement vs JAX for large training runs is

Elon Musk

@elonmusk · 28 mai 2026

We do kinda have that at Starbase

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Tommy Robinson 🇬🇧

@TRobinsonNewEra · 28 mai 2026

So @HantsPolice laughed as Henry Nowak was dying, they took his and his dad's phones to search for "racism" in a sickening attempt to justify his murder!

Elon Musk

@elonmusk · 28 mai 2026

Those hateful police are accessories to murder

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New York Post

@nypost · 28 mai 2026

Four stabbed by knifeman shouting 'Allahu Akbar' at Switzerland train station in front of terrified children trib.al/HGdP77Q

Elon Musk

@elonmusk · 28 mai 2026

!!

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Beff (e/acc)

@beffjezos · 28 mai 2026

The rarest object type in the universe isn't black holes. It's us. Conscious matter. The flame of life. We have a duty to expand it in scope and scale in order to preserve it.

Elon Musk

@elonmusk · 28 mai 2026

Yes

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Gavin Baker

@GavinSBaker · 27 mai 2026

Composer 2.5 being Pareto dominant in coding per CursorBench is important. This is after only a few weeks of supplemental training and/or RL in the Colossus 2 cluster. The 1.5 trillion parameter version of Grok will likely be a much better base model than Kimi. We shall see.

Elon Musk

@elonmusk · 28 mai 2026

Grok 1.5T is trending well

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Pascal

@pascal__2k · 28 mai 2026

Will it be used for Grok v5?

Elon Musk

@elonmusk · 28 mai 2026

Yes

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Rothmus 🏴

@Rothmus · 28 mai 2026

Never been more true

Elon Musk

@elonmusk · 28 mai 2026

Banger

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Elon Musk

@elonmusk · 28 mai 2026

En réponse à @JohnTinsman

SpaceX has not committed to leasing Colossus for years, although it’s possible that may be what happens. This is a 180 day lease with 90 day notice mutual cancellation thereafter. The short term was our request, not Anthropic’s. We won’t leave them hanging and will provide a reasonable off-ramp, but if compute gets super tight I said we might need it back at some point.

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