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DiffusionGemma Technical Report

arxiv.org

31–40 of 44 posts

Re: DiffusionGemma Technical Report

#31

Anybody was able to run this model in a server?

Yes, it runs in vllm happily. It gets >900TPS output reliably on a single 5090 with the nvfp4 model. It's clearly worse than vanilla 26B-A4B, and lacks some things like structured outputs, and gets some tool calls wrong. So you have to find a usecase or a hand rolled harness that leverages the cerebras-level TPS while not going off track during (even short) tasks.

And it fails on rocm of course. This engine is such a hassle on AMD.

Re: DiffusionGemma Technical Report

#32

If these models get good at coding it's going to force a rethink of how languages, compilers and test suite runners work. "AI changes everything" is a cliché by this point but I think it's actually true. If your model can reason and write code at 1500 toks/sec, then you should end up totally bottlenecked on CPU time the entire time a prompt is active. If you aren't, then you're losing wall time versus competitors. Bu…

no way llms can reason through (spring) java's stacktrace hell, and rust compilation is just too slow, i think golang is gonna be gold.

LLMs are excellent at reading stack traces, better than humans. The underlying algorithm lets them link every token with every other in parallel (modulo approximations, linear attention, etc). And they're trained on needle-in-a-haystack tasks. You really want to present LLMs with lots of data up front in large chunks to get the best out of their algorithms.

Re: DiffusionGemma Technical Report

#33

there's still JEPA to be integrated before AGI. Would DiffusionGemma be suitable candidate for DFlash 2?

DFlash 2 is a diffusion-based speculative decoding head for autoregressive models; there's nothing to accelerate here, because this is already wholly diffusion.

Re: DiffusionGemma Technical Report

#34

Earlier quoted context omitted.

Yes, it runs in vllm happily. It gets >900TPS output reliably on a single 5090 with the nvfp4 model. It's clearly worse than vanilla 26B-A4B, and lacks some things like structured outputs, and gets some tool calls wrong. So you have to find a usecase or a hand rolled harness that leverages the cerebras-level TPS while not going off track during (even short) tasks.

And it fails on rocm of course. This engine is such a hassle on AMD.

That's AMD's fault.

RDNA4 is pretty similar to CDNA4, yet over a year after the release of "pro AI" cards like the r9700, they had basic kernels lacking in vllm (like w4a16 int4 kernels) while they were implemented in the datacenter CDNA4 cards.

AMD hardware runs well on llama.cpp because basically anything runs on llama.cpp, especially with vulkan. It's not high praise of AMD's software team to say llama.cpp runs well on their hardware

Re: DiffusionGemma Technical Report

#36
I wonder how viable it would be to apply this to Qwen3.8-27b

Right now running it locally is about 7-11 t/s for me (16GB 4080 and plenty of RAM overflow). If it doubled or possibly tripled this, thats a game-changer

Re: DiffusionGemma Technical Report

#37

If these models get good at coding it's going to force a rethink of how languages, compilers and test suite runners work. "AI changes everything" is a cliché by this point but I think it's actually true. If your model can reason and write code at 1500 toks/sec, then you should end up totally bottlenecked on CPU time the entire time a prompt is active. If you aren't, then you're losing wall time versus competitors. Bu…

no way llms can reason through (spring) java's stacktrace hell, and rust compilation is just too slow, i think golang is gonna be gold.

Stacktraces are almost the ideal context for a LLM

Re: DiffusionGemma Technical Report

#38

Appealing results... do we think there is scope to close the accuracy gap against AR models? or even leverage the "Bidirectional Reasoning and Self-Correction" into an overall advantage?

There is no theory why the gap shouldn't be closed. At the same time, people are trying to make them work for years by now and it's never good enough. But they are competing with incredibly optimized architectures.

Re: DiffusionGemma Technical Report

#40
In contrast to memory-bounded autoregressive decoding, diffusion decoding can be computation-bounded. Devices with a decent amount of compute but very small memory, e.g. nvidia consumer-grade GPUs, could benefit from diffusion decoding massively.

Performance-wise, I don't think diffusion decoding should be much worse than autoregressive decoding, see https://arxiv.org/html/2604.11035 .

As a local LLM user, I really want to see more small diffusion LLM/VLMs with decent performance coming.

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