brigade

14 ms·

181.
by brigade 3y ago
Yeah if code size is the only metric you care about. The second link is an excellent example of code you do not want a compiler to generate by default. Like, besides all the well-known performance pitfalls of microcoded instructions, jecz
182.
by brigade 3y ago
Pretty sure everyone uses a VIPT L1, what evidence is there that it's PIPT? (also what do you believe happens with 4k pages on M1, since it does support those, or why did the A7 have larger caches than Zen4 a decade ago, which was well
183.
by brigade 3y ago
What percentage of code that a CPU will run over its lifetime is demoscene code? Heck, even of just simple hand-optimized assembly a CPU is likely to encounter, what percentage is not vector code? Because x86 vector code typically average
184.
by brigade 3y ago
What diagnostics would even help an average user repair any issue that isn't resolved by a DFU revive? Even for a PC all the POST failure guides don't have any branches that depend on what's happening or anything the screen s
185.
by brigade 3y ago
Even max TDP doesn't correlate well to energy efficiency in normal usage. Like, this chip could never use more than 15W and still be less energy efficient, if lightly threaded workloads clock up to drain the full 15W. Which a boost c
186.
by brigade 3y ago
No, it's AV1 that uses (up to) 16-bit fields for image dimensions. HEIF grids, which is the AVIF feature that combines multiple AV1 images into one, have 32-bit fields for dimensions so are limited only by what the decoder is willing t
187.
by brigade 3y ago
Adobe didn't support WebP until 2021, they're the poster child for not supporting a format until it's popular enough that they need to add support.
188.
by brigade 3y ago
The profiles only matter if you want to be decodable by hardware decoders. If you only care about software decoders, which must be true if JPEG-XL is your comparison, then you don't have to use the HEIF grid for large dimensions, and t
189.
by brigade 4y ago
Because you're borrowing less money as you repay the principal. Like, if you take a loan at 6% with monthly payments, that means each month you owe 0.5% of the current outstanding principal in interest. (6% / 12 months) Probably y
190.
by brigade 4y ago
AFL works by trying to modify bits and seeing what branches change direction. Arithmetic coding means this relationship desyncs almost instantly, so it’s hard to mutate into interesting test cases.
191.
by brigade 4y ago
Designing a high-performance CPU within the power budget of a smartphone is expensive and hard ; so hard that Samsung, Qualcomm, NVIDIA, and even Intel have all tried and bowed out because ARM did it better. RISC-V doesn't really make
192.
by brigade 4y ago
iPads also desaturate when there's similarly no overlay on top of fullscreen video, so it's not just an Intel bug...
193.
by brigade 4y ago
If it was actually 2x more efficient then that would be a very strong argument that I believe would prevail. But I'm kinda surprised so many people are so thirsty for a 10% improvement for natural images at qualities above what most
194.
by brigade 4y ago
It's still a perfectly valid bitstream and file if you don't conform to the defined profiles and encode resolutions up AV1's maximum 65536x65536 (or even larger with HEIF grids), as long as you don't falsely claim you&#x
195.
by brigade 4y ago
It’s not potentially UB until you access the object through the wrong pointer type; pointer math isn’t type punning. In this case it should be accessed through one of the load intrinsics, which has its behavior defined in the same way mem
196.
by brigade 4y ago
An 84 month loan at New York’s maximum 16% interest means that the 60% threshold isn’t reached for 5 years, far after the expected loan lifetime. And the car isn’t the only thing being sold, there might be a bundled reconditioning fee, a GP
197.
by brigade 4y ago
He’s good at creating useful MVPs that are architected well enough to attract other people to finish the remaining 99% of the work as he moves on to the next project.
198.
by brigade 4y ago
The capture pixel format depends on device - I think 4:2:2 is pretty common for webcams, which in H.264 requires profiles that aren’t widely implemented outside of x264 and ffmpeg.
199.
by brigade 4y ago
A surprising number of mp4 files are missing the ctts atom that contains pts since it’s sort-of optional outside the Apple stack (like ffmpeg generated such files from raw h264, which is probably the actual motivation for finally fixing thi
200.
by brigade 4y ago
People keep repeating that Zen4 and M1 are close in efficiency but what is the source with actual benchmarks and power measurements? At any rate, using single points to compare energy efficiency isn't a good comparison, unless either t
201.
by brigade 4y ago
Incidentally, California mostly [1] already bans hidden fees for cars, and IMO the car-buying experience in California is better for it compared to other states. [1] the current workaround is dealers listing the MSRP on their websites and a
202.
by brigade 4y ago
Your CPU gets maybe 700-800 gflops depending on your all-core frequency (fp32 because you don't have Sapphire Rapids.) The T4 benchmarked would be crunching what it can at ~65 tflops (fp16 tensor.) Newer GPUs hit 300 tflops (4090) or e
203.
by brigade 4y ago
Motor homes and boats have a lot more surface area than a car roof. The 1kWh/day is based on the two actual cars with a solar roof, which have a ~200W capacity. Even a paper optimistic about solar cars estimates that doubling that to
204.
by brigade 4y ago
If you want to encode a series of indirect jumps between concatenated functions, you can do that already and the return address stack won’t get involved; you’ll simply get the normal branch predictors. But generalized branch prediction is e
205.
by brigade 4y ago
Intel‘s recommended customer price is $8200 [1], and each of the 12 DDR4 sticks is probably north of $1k [2]. Are Xeons and dense ECC ram worth what they cost even at the part level? Not really, but servers have different economics than p
206.
by brigade 4y ago
QuickTime Player is an audio player, why wouldn't it be? However, the underlying complaint is that Music doesn't claim to be capable of handling mp4. Which is basically true; the "m4a" and "m4v" that Music do
207.
by brigade 4y ago
Big difference between needing to keep attention on the road because the car is liable to hit parked cars obstructing the travel lane, and merely having to be ready to start paying attention when the operational design domain of a L3 system
208.
by brigade 4y ago
LA Noire is an excellent example of my point - people just assumed the disc didn't have the game because the day-one patch was 3/4 of the installed size, but no, the delta update from the GM version on disc was just that bad.
209.
by brigade 4y ago
> actual physical mechanical knobs connected directly to the HVAC mechanisms I'll admit to not living in Phoenix or the like, and it did take me time to trust climate control after only having simple A/C, but I doubt I'm
210.
by brigade 4y ago
That "trend" isn't shipping incomplete builds, but rather that the engineering work to minimize delta update sizes simply isn't a priority for games with infrequent patches, and YouTubers can't tell the difference.

More ›