[KeplerBoy]

I guess it's a software problem.

Without optimized implementations their performance will look like shit, even if their chip were years ahead of the competition.

Building efficient implementations with an immature ecosystem and toolchain doesn't sound like a good time. But yeah, huge red flag. If they can't get their chip to perform there's no hope for customers.

[beng-nl]

This hypothesis is an eerily exact instance of the tinygrad (tinycorp) thesis, along the lines of

“nvidia’s chip is better than yours. If you can’t make your software run well on nvidia’s chip, you have no hope of making it run well on your chip, least of all the first version of your chip.”

That’s why tinycorp is betting on a simple ML framework (tinygrad, which they develop and make available open source) whose promise is, due to the few operations needed by the framework: it’ll be very easy to get this software to run on a (eg your) new chip and then you can run ML workloads.

I’m not a (real) expert in the field but find the reasoning compelling. And it might be a good explanation for the competition for nvidia existing in hardware, but seemingly not in reality (ie including software that does something with it).

[anon291]

> That’s why tinycorp is betting on a simple ML framework (tinygrad, which they develop and make available open source) whose promise is, due to the few operations needed by the framework: it’ll be very easy to get this software to run on a (eg your) new chip and then you can run ML workloads.

This sounds easy in theory, but in reality, based on current models, the implementations are often tuned to make them work fast on the chip. As an engineer in the ML compiler space, I think this idea of just using small primitives, which comes from the compiler / bytecode world, is not going to yield acceptable performance.

[zozbot234]

Often enough, hardware-specific optimizations can be performed automatically by the compiler. On the flip side, depending on a small set of general-purpose primitives makes it easier to apply hardware-agnostic optimization passes to the model architecture. There are many efforts that are ultimately going in this direction, from Google's Tensorflow to the community project Aesara/PyTensor (née Theano) to the MLIR intermediate representation from the LLVM folks.

[anon291]

I'm a compiler engineer at a GPU company, and while tiny grad kernels might be made more performant by the JIT compiler underlying every GPU chips stack, oftentimes, a much bigger picture is needed to properly optimize all the chip's resources. The direction that companies like NVIDIA et al are going in involves whole model optimization, so I really don't see how tiny grad can be competitive here. I see it most useful in embedded, but Hotz is trying to make it a thing for training. Good luck.

> There are many efforts that are ultimately going in this direction, from Google's Tensorflow to the community project Aesara/PyTensor (née Theano) to the MLIR intermediate representation from the LLVM folks.

The various GPU companies (AMD, NVIDIA, Intel) are some of the largest contributors to MLIR, so saying that they're going in the direction of standardization is not wholly true. They're using MLIR as a way to share optimizations (really to stay at the cutting edge), but, unlike tiny grad, MLIR has a much higher level overview of the whole computation and the company's backends will thus be able to optimize over the whole model.

If tiny grad were focused on MLIR's ecosystem I'd say they had a fighting chance of getting NVIDIA-like performance, but they're off doing their own thing.

[KeplerBoy]

Yes, sure. I'm occasionally reading up on what George Hotz is doing with tinygrad and him ranting about AMD hardware certainly has influenced my opinion on non-Nvidia hardware to some degree - even though I take his opinion with a grain of salt, he and his team are clearly encountering some non-trivial issues.

I would love to try some of the stuff I do with CUDA on AMD hardware to get some first-hand experience, but it's a though sell: They are not as widely available to rent and telling my boss to order a few GPUs, so we can inspect that potential mess for ourselves is not convincing either.