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Dav2d 3 months ago

There's an order of magnitude difference in speed requirements between file format parsing and image decoding, then another order of magnitude difference to video decoding. Even rav1d reuses dav1d's assembly (most of the actual runtime) to approach its speed.

Even backwards compatibility is optional in USB4. There are USB4 devices (SSDs at least) that will not function when connected to USB 3 ports.

It’s really a question of whether a team believes bugs are defects that deserve to be fixed, or annoyances that get in the way of shipping features. And all too often, KPIs and promotions are tied to the features, not the bugs.

Plus, I’ve been in jobs where fixing bugs ends up being implicitly discouraged; if you fix a bug then it invites questions from above for why the bug existed, whether the fix could cause another bug, how another regression will be prevented and so on. But simply ignoring bug reports never triggered attention.

That's why I said generally - once testimony is compelled, it can no longer be used against you. And the definite exception for compelling your name is if the government already believes that you committed a crime and is trying to figure out who you are, and you cannot articulate specifically why your name could be incriminating.

5th amendment protections can include questions of identity, if the question of identity is relevant for incrimination. Like, if the government has a warrant for "Joe Smith", you're not required to testify whether that's you. It's usually a waste of time since could just prove it with the non-testimonial evidence that lead to your arrest, but the protection does exist.

First, you have the right to say nothing at all; there is no requirement to incriminate someone else to protect yourself.

Second, you can still generally invoke the 5th amendment during testimony even if you already claimed someone else did it. You aren't under oath until said testimony, so it still protects against you having to choose between committing perjury or self-incrimination, and doing so cannot be used as evidence of either.

Most of the world also doesn't have the same degree of protections against self-incrimination that the 5th amendment provides. If someone shot a person with my gun, while the police can obviously ask questions, in the US I have the right to not answer and force them to prove beyond a reasonable doubt who fired it.

It’s not a hard limit, especially if you aren’t pushing the frequency wall like Intel. AMD used to use a 2-way 64kb L1, Intel has an 8-way 64kb L1i on Gracemont, and more to the point, high-end ARM Cortex has had 4-way 64kb L1 caches since before they even supported 16kb pages.

ARM favored wider ILP and mostly symmetric ALUs, while x86 favored wider and asymmetric ALUs

Most high-end ARM cores were 4x128b FMA, and Cortex-X925 goes to 6x128b FMA. Contrast that to Intel that was 2x256b FMA for the longest, then 2x512b FMA, with another 1-2 pipelines that can't do FMA.

But ultimately, 4x128b ≈ 2x256b, and 2x256b < 6x128b < 2x512b in throughput. Permute is a different factor though, if your algorithm cares about it.

Your first example is a CPU limitation that Instruments doesn't model (does perf?), but is still mostly better than Intel chips that are limited to 4 dynamic counters (I think still? At least that's what I see in the Alder Lake's Golden Cove perfmon files...)

Your second example, is the complaint that Instruments doesn't have flamegraph visualization? That was true a decade ago when it was written, and is not true today. Or that Instrument's trace file format isn't documented?

A quick google suggests that British Columbia's building code only requires STC 50 which is "you can hear but not understand a neighbor's loud conversation" levels of isolation. Though maybe your city has stricter requirements?

STC 50 is a common requirement in the US too.

AFAIK Jyrki came after WebP was already announced to add lossless support; rather I’d consider Skal the creator inasmuch as it was originally just an image container for VP8 intra. He was working on WebP2 at the time Google rejected JPEG-XL and also was not involved in that decision.

gAMA dates back to the days when hardly anyone had a clue about color primaries and colorspaces, let alone commonly tried to synchronize them across displays. It's explicitly ignored by everyone if the file uses any more modern method of signaling colorspace information, so really OP needs actually to write a colorspace to the file (cICP, iCCP, even an sRGB chunk) instead of merely claiming on their blog they wrote a colorspace.

Proper rate control for such realtime streaming would also lower framerate and/or resolution to maintain the best quality and latency they can over dynamic network conditions and however little bandwidth they have. The fundamental issue is that they don't have this control loop at all, and are badly simulating it by polling JPEGs.

MD-11s aren't in commercial passenger service, so it's unlikely they retire it due to a poor reputation.

The huge question is what changes the FAA requires to unground it; if they decide design changes are needed to reduce the risk that an uncontained failure of engine 1 or 3 directly takes out engine 2, that could likely be economically infeasible.

They’re not big enough and some sites will hard block it with other VPNs, like the government of Delaware. Bigger sites still soft block it like Instagram which will randomly ban accounts using it, or Google with captchas every couple of searches.

Well the OP’s electrical noise almost certainly is coming through the USB connection as their DAC has no external power supply. Extremely common.

Your problem of an AC power supply not sufficiently filtering out high-frequency noise from mains is exceptionally rare to the point that yes, I also don’t believe that was the correct diagnosis of your issue.