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ftufek

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Samsung Q990D unresponsive after 1020 firmware update

us.community.samsung.com
591 points·by ftufek·năm ngoái·562 comments

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ftufek
·năm ngoái·discuss
https://huggingface.co/models is usually good place to look, you can sort by trending and filter by the task you care about (ex: Image-Text-to-Text). The first page will usually have the leading edge/newer models.
ftufek
·năm ngoái·discuss
Yeah, some people say they got replacements through the warranty. The problem is, this thing is really big and heavy, so boxing it up is a real pain, especially if you've had it a while and already threw out the original box.
ftufek
·năm ngoái·discuss
Unfortunately those "solutions" don't work, the person who had a potential solution was able to at least go through the inputs, this is not the case here, you can't even go through the inputs.

I've tried all the potential solutions this morning. It seems permanent unless Samsung somehow finds some magic to fix it, especially since the soundbar won't connect to WiFi/internet and doesn't do anything with the USB plugged in.
ftufek
·2 năm trước·discuss
Their consumer cards are the entry point for many researchers and students though, so it pays off eventually when they become engineers working with the expensive enterprise cards.
ftufek
·2 năm trước·discuss
It's not just the home insurance either. Last week, I bought a car and 3 of the big insurance companies refused to insure it without a 15 days waiting/underwriting period (Geico which I've had for many years, State Farm and Progressive). It was pretty surprising, it seems like they are trying to stop offering insurance without explicitly getting out of the state or something. Thankfully, AAA gave immediate coverage.
ftufek
·2 năm trước·discuss
You'll need something like EPYC/Xeon CPUs and motherboards which not only have many more PCIe lanes, but also allow bifurcation. Once you have that, you can get bifurcated risers and have many GPUs. And these risers use normal cables not the typical gamer pcie risers which are pretty hard to arrange. You won't get this for just $200 though.

For the chassis, you could try a 4U rosewill like this: https://www.youtube.com/watch?v=ypn0jRHTsrQ, not sure if 6 3090s would fit though. You're probably better off getting a mining chassis, it's easier to setup and cool down, also cheaper, unless you plan on putting them in a server rack.
ftufek
·2 năm trước·discuss
Yeah, it's really just trying to get as much compute as possible as cheaply as possible interconnected in a reasonably fast way with low latency. Slow networking would be a bottleneck and expensive high end networking would defeat the purpose of staying cheap.
ftufek
·2 năm trước·discuss
I meant each card is limited to 240w, instead of the usual 450w. Also, it's more like 4 circuits after all, because the main cpu/mb/2gpus are on a 15a too.
ftufek
·2 năm trước·discuss
Never got around to writing some public docs. It's essentially bunch of GPUs on custom aluminum extrusion frames sitting in a server rack, connected to romed8-2t motherboard through pcie splitters.

Power limited to 240w, negligible performance loss while halving energy usage, uses 3 20a circuits.

Performance can range anywhere from 2x4090=1xa100 to 4x4090=1xa100 depending on models, etc.

It's great value for the money, and very easy to resell as well.
ftufek
·2 năm trước·discuss
Really depends on the model and the software tricks you're using. With DDP and gradient accumulation, you can reduce the bandwidth bottleneck by quite a bit. We've trained with 4090s running at x4 lanes with very small impact. And running at x4 means you can stuff up to 26-28GPUs on a single cpu node (say epyc) and get PCIe latency and get rid of networking hassle.