Viewing profile — marcan_42

No, the throttling is much more aggressive than real time. I suspect it's Google's way of sneakily breaking ancient YouTube clients that won't run arbitrary JS as a countermeasure …

This is complete nonsense. The overwhelming majority of video download time is spent transferring the actual video data, limited by throttling or network speed. The time it takes f…

That's one reason why most TrustZone implementations are broken: usually the OS has control over all this clocking stuff. It's also one way the Tegra X1 (Switch SoC)'s last remaini…

Of course, that requires tenants trust Intel's security. As a security researcher and given past showings from Intel, I wouldn't put much faith in SGX, even if they try to fix past…

This is how Jamulus works; it delays your own monitoring feed by your latency, so it is in sync with everyone else. If your ping to the server is 30ms then you'll hear yourself 30m…

I actually didn't know about that one. Sounds like it's mostly for specialty applications though (e.g. ceramic packages). Looks like it's something like 80% gold, so that would get…

The AGX GPU MMU (variously called "GART" and "UAT", no relation to AGP GART) uses the ARM64 page table format (the GPU coprocessor literally uses it as an ARM page table among othe…

Gold plated connectors are absolutely normal and completely standard and essential. The vast majority of durable data/signal connectors used today are gold-plated. Hack open any ra…

None of them are ever willing to do the experiment (double blind).

Low quality audio hardware absolutely exists and is rampant at the cheap end. And some standards, like USB2.0 (when used for data), are terrible and will cause audible noise if lot…

What the lawyers do and how the technology actually works are not necessarily related. The shaders are completely different, the controller is completely different, the command sub…

Apple GPUs have little to no IMG technology left. You can tell there is some remaining influence in the design, but Apple's is much better and cleaner and what IMG's GPUs should ha…

And plenty of evidence that the journalists had no idea what they were doing and were grasping at straws to construct a story out of nothing. See e.g. https://twitter.com/marcan42/…

When you are working in a tight embedded system, instead of fighting to slim down a library that is designed to scale to significantly larger systems, it makes much more sense to s…

The solution isn't to stop using rand(). The solution is to stop using newlib. If you're doing your own custom memory management like this, you shouldn't even have a malloc impleme…

No, it sounds perfectly fine. Mathematically, interleaving samples like this is equivalent to zero-padding every other sample to upsample, with no antialiasing filter. Then you add…

No, really, it can't. Feed it a checkerboard input and you'll get gray on the way out. It's horizontally processed at a lower resolution internally. Might be 960x1080 at 30FPS, and…

> I can get 1920x1080 at 60fps from it. No, you can't. It's not just MJPEG, it's internally downsampled to less than 1920 pixels of effective horizontal resolution, even though it …

> which are programmed somewhat like regular computers but just with an astonishingly high number of threads. But they aren't that; they are actually wide vector processors, which …

ECDSA is easy to fuck up due to needing a "random" number for signatures (among other things, but that's the one Sony did and many others have since). Thankfully, we've figured out…

I know it's not the largest sample size, but I did ask twitter and nobody found one with ane1 enabled, it's always ane0.

They sold the chips as having only on me ANE, and software support is there since it's used in the M1 Ultra...

It's disabled and locked in boot firmware, and the firmware is signed.

The Load Balancer is there because the M1 Max has two independent Neural Engines (unlike the GPU cores, which are load balanced in hardware and the OS sees as a single one even on …