Hacker News: Gracana

New comment by Gracana in "Mercedes‑Benz starts large‑scale production of electric axial flux motor"

Gracana — Wed, 10 Jun 2026 13:38:00 +0000

Kind of orthogonal. Traditional AWD and part-time 4WD systems are solutions to get power from a single motor to both the front and rear of a vehicle. AWD has a center differential to account for differences in front and rear driveshaft speeds when driving on high-traction surfaces. 4WD just locks the front and rear driveshaft rotation together, which is a simple and robust solution that only works on loose surfaces.

With separate front and rear electric motors, there's no center differential to worry about, and a sufficiently sophisticated motor control system can make it behave well on and off road.

New comment by Gracana in "Nvidia Cosmos 3"

Gracana — Thu, 04 Jun 2026 11:31:51 +0000

Interesting! Yeah, that's quite expensive. For some reason I was thinking some of the useful cobots I had seen in the past were in the $10k range, but from a brief look around, that doesn't seem to be the case.

New comment by Gracana in "Nvidia Cosmos 3"

Gracana — Mon, 01 Jun 2026 16:39:18 +0000

I have the GPU but no robot. What’s the minimum viable robot needed to play with this?

New comment by Gracana in "I Put a Datacenter GPU in My Gaming PC for £200"

Gracana — Sun, 31 May 2026 16:44:47 +0000

Yeah. Not linking as an endorsement -- I do think it's cool, but it's not worth it for that price.

New comment by Gracana in "I Put a Datacenter GPU in My Gaming PC for £200"

Gracana — Sun, 31 May 2026 15:20:10 +0000

Things like this have started to show up on eBay: https://www.ebay.com/itm/198383386991

  2X NVIDIA Tesla V100 32GB NVLink Water Cooled X99 E5-2686v4 AI Workstation PC

  Item                              Quantity
  Intel Xeon E5-2686 v4 CPU           1
  2U CPU Cooler                       1
  Jingyue X99 Motherboard             1
  DDR3 Memory                         32GB
  SSD                                 480GB
  AMD Radeon R5 240 4K Display Card   1
  NVIDIA Tesla V100 32GB SXM2 GPU     2
  NVLink SXM2 Dual-GPU Baseboard      1
  Corsair Water Cooling System        2
  850W Bronze Power Supply            1
  Dual-GPU 300G NVLink SXM2 Baseboard 1
  8654 Data Cable                     2
  8654 to PCIe Adapter Card           1

New comment by Gracana in "I put a datacenter GPU in my gaming PC"

Gracana — Sun, 31 May 2026 15:15:03 +0000

An additional complication is that MI250Xes are two GPUs in one package, so you need to connect the first and last x16 SERDES groups to the host, otherwise you'll only see one GPU (or it won't work at all, idk).

Also, the cheap HPE pulls on eBay need some proprietary HPE magic to work, and I have yet to see anyone figure that out.

New comment by Gracana in "Nitpicking the shell history scene in 'Tron: Legacy'"

Gracana — Fri, 29 May 2026 12:36:40 +0000

Second best in my opinion. Interstella 5555 is a masterpiece.

New comment by Gracana in "Taking a walk may lead to more creativity than sitting, study finds (2014)"

Gracana — Tue, 26 May 2026 10:18:15 +0000

Studies often measure and quantify things that we believe to be true.

New comment by Gracana in "Linux gaming is faster because Windows APIs are becoming Linux kernel features"

Gracana — Wed, 13 May 2026 19:15:55 +0000

Do you mean in practice, or something? DP definitely supports HDR, and it seems to work fine for me.

New comment by Gracana in "Ratty – A terminal emulator with inline 3D graphics"

Gracana — Mon, 11 May 2026 15:33:16 +0000

> Make it make sense

It's not hypocrisy when different people do different things.

New comment by Gracana in "CARA 2.0 – “I Built a Better Robot Dog”"

Gracana — Wed, 06 May 2026 16:42:03 +0000

That’s how industrial VFDs do motor overload protection, they just keep track of heat accumulation (based on current) vs dissipation (based on fan speed) and fault when a threshold is reached. Probably there’s more nuance to it, but that’s the gist of it.

New comment by Gracana in "How OpenAI delivers low-latency voice AI at scale"

Gracana — Tue, 05 May 2026 01:35:41 +0000

Seems like there's a big risk of having that habit leak into human conversation. A lot of people try really hard to train themselves not to add those fillers.

New comment by Gracana in "DeepSeek V4—almost on the frontier"

Gracana — Sat, 02 May 2026 12:06:23 +0000

The article quotes the full price.

New comment by Gracana in "Claude Opus 4.7"

Gracana — Thu, 16 Apr 2026 17:04:09 +0000

Do you have to put it in a build/execute mode (separate from a planning mode) to allow it to move on? I use opencode, and that's how it works.

New comment by Gracana in "Claude Opus 4.7"

Gracana — Thu, 16 Apr 2026 16:55:17 +0000

This can result in some funny interactions. I don't know if Claude will say anything, but I've had some models act "surprised" when I commented on something in their thinking, or even deny saying anything about it until I insisted that I can see their reasoning output.

New comment by Gracana in "Qwen3.6-35B-A3B: Agentic coding power, now open to all"

Gracana — Thu, 16 Apr 2026 16:35:52 +0000

https://en.wikipedia.org/wiki/Bfloat16_floating-point_format

Yes, however it’s a different format from standard fp16, it trades precision for greater dynamic range.

New comment by Gracana in "Show HN: Brutalist Concrete Laptop Stand (2024)"

Gracana — Tue, 07 Apr 2026 17:27:32 +0000

Yes! Trying to make something that other people want is a good way to take the joy out of a project, and it dulls the uniqueness that could the result something truly special.

New comment by Gracana in "Microsoft hasn't had a coherent GUI strategy since Petzold"

Gracana — Mon, 06 Apr 2026 14:04:37 +0000

I hate this too. You can turn it off. In Settings, go to System->Multitasking and change "Show tabs from apps when snapping or pressing Alt+Tab" to "Don't show tabs."

New comment by Gracana in "OpenClaw privilege escalation vulnerability"

Gracana — Fri, 03 Apr 2026 19:03:22 +0000

Parent isn't saying that bespoke scripts are bad, just that it's not worth their time to write them. The value of the bot is that it can do that for you.

New comment by Gracana in "Qwen3.6-Plus: Towards real world agents"

Gracana — Fri, 03 Apr 2026 17:02:58 +0000

My explanation is simpler and does not rely on assuming that anyone is an idiot. Or an edgy contrarian.