Hacker News: zeusk

New comment by zeusk in "The USB Situation"

zeusk — Sun, 03 May 2026 04:14:25 +0000

> copper can barely support 10G and is terribly power hungry when it does that.

AFAIK, thunderbolt cables are also copper - so what trickery do they use for supporting USB4-80? i believe both connectors use differential pair wires for signalling.

New comment by zeusk in "Roblox shares plummet 18% as child safety measures weigh on bookings"

zeusk — Sat, 02 May 2026 18:27:08 +0000

Half life alyx and their push for openVR has made a big impact in that part of the gaming world.

But yeah, their games are just as filled with lootbox, crates, skin garbage as other low effort money grabs; saving grace being its all cosmetics only (and they’re private about their financials).

New comment by zeusk in "Investigating Split Locks on x86-64"

zeusk — Sat, 11 Apr 2026 15:21:13 +0000

ordering lock acquisition is a tested strategy to avoid deadlocks; so locking the cache lines sorted by PA would cover that?

New comment by zeusk in "People Love to Work Hard"

zeusk — Tue, 07 Apr 2026 06:00:26 +0000

This is very spot on in my experience.

New comment by zeusk in "Apple discontinues the Mac Pro"

zeusk — Fri, 27 Mar 2026 03:23:41 +0000

> My personal dream is that vms would support pci pass through and so you can just spin up a Linux vm and let it drive the gpus.

SR-IOV is just that? and is well supported by both Windows and Linux.

New comment by zeusk in "SIMD programming in pure Rust"

zeusk — Thu, 22 Jan 2026 01:50:37 +0000

They’re used by the internal register renamer/allocator so if it sees you’re storing the results to memory then reusing the named register for a new result - it will allocate a new physical register so your instruction doesn’t stall for the previous write to go through.

New comment by zeusk in "CES 2026: Taking the Lids Off AMD's Venice and MI400 SoCs"

zeusk — Wed, 07 Jan 2026 04:11:16 +0000

This has already been tried :)

iirc, in the 2016 a quadcore intel cpu ran the original crysis at ~15fps

New comment by zeusk in "Big GPUs don't need big PCs"

zeusk — Sat, 20 Dec 2025 19:48:09 +0000

Get the DGX Spark computers? They’re exactly what you’re trying to build.

New comment by zeusk in "1.5 TB of VRAM on Mac Studio – RDMA over Thunderbolt 5"

zeusk — Thu, 18 Dec 2025 23:31:37 +0000

the TB5 link (RDMA) is much slower than direct access to system memory

New comment by zeusk in "Open Source Implementation of Apple's Private Compute Cloud"

zeusk — Thu, 06 Nov 2025 23:38:40 +0000

Nvidia has been investing in confidential compute for inference workloads in cloud - that covers physical ownership/attacks in their thread model.

https://www.nvidia.com/en-us/data-center/solutions/confident...

https://developer.nvidia.com/blog/protecting-sensitive-data-...

New comment by zeusk in "The 512KB Club"

zeusk — Tue, 04 Nov 2025 18:24:51 +0000

Yes, but parent comment definitely implied they weren't talking about people running on the latest and best out there. Even the middle-grade smartphones today are leaps and bounds better than the atom from 2010.

New comment by zeusk in "The 512KB Club"

zeusk — Tue, 04 Nov 2025 18:02:59 +0000

> And yet, if I go to Youtube or just about any other modern site, it takes literally a minute to load and render, none of the UI elements are responsive, and the site is unusable for playing videos. Why? I'm not asking for anything the hardware isn't capable of doing.

but the website and web renderer are definitely not optimized for a netbook from 2010 - even modern smartphones are better at rendering pages and video than your atom (or even 8350u) computers.

New comment by zeusk in "The x86 Interrupt List, aka “Ralf Brown's Interrupt List” (2018)"

zeusk — Mon, 03 Nov 2025 07:19:11 +0000

What do you mean by that? Most syscalls are still interrupt based.

New comment by zeusk in "Show HN: MyraOS – My 32-bit operating system in C and ASM (Hack Club project)"

zeusk — Mon, 27 Oct 2025 17:36:48 +0000

Double buffering a 4K 4bpp framebuffer itself is 64mb

New comment by zeusk in "Ask HN: What's the best hackable smart TV?"

zeusk — Fri, 10 Oct 2025 17:49:36 +0000

> same hardware as the higher end models but needs a firmware bit flip

Is this firmware bit flip known? couldn't find anything off google.

New comment by zeusk in "Founder sentenced to seven years in prison for fraudulent sale to JPMorgan"

zeusk — Tue, 30 Sep 2025 16:46:52 +0000

AUM is not theirs to keep; and market cap is a very deceitful metric especially for banks where liabilities dwarf the market cap.

New comment by zeusk in "Snapdragon X2 Elite ARM Laptop CPU"

zeusk — Thu, 25 Sep 2025 01:05:56 +0000

Well so is the snapdragon X elite, including the older snapdragons (anyone remember scorpion cores on QSD8x50?)

New comment by zeusk in "Writing memory efficient C structs"

zeusk — Wed, 30 Jul 2025 22:42:32 +0000

The real issue with packed structs and bitfields happens when concurrency gets involved. Majority of modern CPU caches are private and only allow one core to hold the cache line - so it creates more false dependencies when cores are trying to alter information that was compacted into a cache line on another core.

New comment by zeusk in "Demystifying Debuggers"

zeusk — Wed, 11 Jun 2025 11:36:35 +0000

I've used kd/windbg at Microsoft, lldb at Apple, gdb at Intel; WinDbg(Next) and kd are still my absolute favorite.

Coolest feature of windbg is time travel debugging - https://learn.microsoft.com/en-us/windows-hardware/drivers/d...

New comment by zeusk in "Denuvo Analysis"

zeusk — Tue, 10 Jun 2025 17:00:27 +0000

but afaik, we still don't have a break on xbox one released 2013 - 12 years later.