Live data from Hacker News

Nvidia DGX Spark

nvidia.com

161–170 of 222 posts

Re: Nvidia DGX Spark

#161
post #24

The mainstream options seem to be Ryzen AI Max 395+, ~120 tops (fp8?), 128GB RAM, $1999 Nvidia DGX Spark, ~1000 tops fp4, 128GB RAM, $3999 Mac Studio max spec, ~120 tflops (fp16?), 512GB RAM, 3x bandwidth, $9499 DGX Spark appears to potentially offer the most token per second, but less useful/value as everyday pc.

You should add memory bandwidth to your comparison, as it's usually the bottleneck in terms of tps (at least for token generation, prompt processing is a different story).

Re: Nvidia DGX Spark

#162

suppose 1/3rd of memory is used to host a teacher network, and 2/3rds of memory is used to host a student network, how long would knowledge distillation typically take?

They will meet at 18:47 on tuesday evening.

Re: Nvidia DGX Spark

#163

Earlier quoted context omitted.

Ok then just to clarify: you can fit 4x larger models on the Spark vs 5090, not 17x.

@nabla9 have tried to tell you that for DGX Spark, you can also use optimized models; therefore, this means that Spark can also be used for inference with bigger models, such as those exceeding 200B. Please compare the same things: carrots VS carrots, not apples VS eggs.

I don't understand what's not optimized on 5090. If we're comparing with Apple chips or AMD Strix Halo yes you will have very different hardware + software support, no FP4 etc. but here everything is CUDA, Blackwell vs Blackwell, same FP4 structured sparsity, so I don't get how it would be honest to compare a quantized FP4 model on Spark with an unoptimized FP16 model on a 5090 ?

Re: Nvidia DGX Spark

#164
post #43

The RAM bandwidth is so slow on this that you can barely train or do inference or do anything on it. I think the only use case they have in mind for this is fine tuning pretrained models.

It's the same as Strix Halo and M4 Max that people are going gaga about, so either everyone is wrong or it's fine.

Same as Strix Halo, which is 30% cheaper and readily available, yes.

Hence the disappointment.

Re: Nvidia DGX Spark

#165

According to Wendell from Level1Techs, the now-launched Jetson Thor uses a Linux Kernel built by Nvidia, on Ubuntu 20.04 [0]. So I assume getting upgrades will have the same feel as those Chinese SBC's like from Radxa or cheap Android devices. I wonder if this also applies to this DGX Spark. I hope not. [0] https://www.youtube.com/watch?v=cgnKUUcCKcs&t=669s

or how the Jetson Nano was on Ubuntu 18.04 when it was released in 2019 and never got a single major OS upgrade.

That platform was great for a few months...

Re: Nvidia DGX Spark

#167
It's a great idea that they utterly gimped with the 273 GB/s memory bandwidth. You can buy a Macbook Pro M4 Max with 128GB that has TWICE the bandwidth. A 4090 has 4 TIMES the bandwidth. I get that they're terrified of doing anything that competes with their H100/B200 but there is an enormous gap between 273 GB/s and the >2TB/s of their data center products.

Re: Nvidia DGX Spark

#170

It's a great idea that they utterly gimped with the 273 GB/s memory bandwidth. You can buy a Macbook Pro M4 Max with 128GB that has TWICE the bandwidth. A 4090 has 4 TIMES the bandwidth. I get that they're terrified of doing anything that competes with their H100/B200 but there is an enormous gap between 273 GB/s and the >2TB/s of their data center products.

Its absurd because the B200 are all on NVLink. Different market entirely.
Post reply on HN