TinkersW

8 ms·

91.
by TinkersW 2y ago
If you are quoting the numbers google put out, recall that those numbers were after they profiled and manually disabled bounds checks in cases where it caused significant slowdown.. so in other words the numbers were garbage.
92.
by TinkersW 2y ago
Nvidia calls them cores to deliberately confuse people, and make it appear vastly more powerful than it really is. What they are in reality is SIMD lanes. So the H100(which costs vastly more than a Zen5..), has 14592 32 bit SIMD lanes, not
93.
by TinkersW 2y ago
If you normalize for cost, the difference isn't nearly as large as you might think, around 4-5x.
94.
by TinkersW 2y ago
I don't think that is why he won. Dems basically handed this election to Trump; Biden running when he had memory issues, then handing it to Harris whose numbers were questionable against Trump(with the braindead excuse that only she co
95.
by TinkersW 2y ago
Russia already had, and even created more NATO membership on its borders(Finland just recently). That excuse is clearly false.
96.
by TinkersW 2y ago
I scanned through it, and it is actually pretty easy to read C++. Though they could use to learn what comments are.
97.
by TinkersW 2y ago
No, but it is an argument for making it illegal for car manufacturers to monitor you.
98.
by TinkersW 2y ago
zlib is really old and out of date, no real reason to use it except legacy. I think most optimization effort goes into newer compression libs like zstd.
99.
by TinkersW 2y ago
It isn't about obligations, it is about the best interest of the US. Which is very clearly not handing everything to Russia for no good reason, and for nothing at all in return.
100.
by TinkersW 2y ago
The second you say something like that first sentence you have already lost the argument. Which is annoying as the US is going to face some serious consequences from Trumps idiocy, phrasing it the way you did, is handing the future to Trump
101.
by TinkersW 2y ago
It depends, for SIMD float-> scalar floats it is fast as they operate on the same registers. If pulling out of lane 0 you don't even need to do anything(just a type cast). For other lanes you need a shuffle. For SIMD integer to scal
102.
by TinkersW 2y ago
They said they prefer intrinsics which the article says are only about 10% slower(citation needed), you misunderstood and made a comparison against scalar. Personally I'd say the only good reason to use assembly over intrinsics is havi
103.
by TinkersW 2y ago
Ya it rather baffling, it would be a solid improvement, and they can easily ban the parts that don't work for them(exceptions/stl/self indulgent template wankery). On a memory safety scale I'd put C++ about 80% of the wa
104.
by TinkersW 2y ago
It is unfortunate that it is written in such a unhinged way as there are probably some valid points mixed in with the insanity..
105.
by TinkersW 2y ago
I smashed up my wrist in a bike crash, resting it didn't fix shit. When I lifted weights it would tweak out and hurt, so I avoided that for like a year. Eventually I decided fuck this, and starting lifting weights even though it hurt,
106.
by TinkersW 2y ago
California banned affirmative action in 1996 precisely because it is discriminatory. I can only hope the dems are smart enough to drop DEI for good, I don't think Trump is healthy for the US.
107.
by TinkersW 2y ago
Your justification for discrimination against white guys is that a very tiny percent of them are legacy admissions and/or from wealthy families? You know the rest of them are not benefiting from that in the slightest? Actually they are
108.
by TinkersW 2y ago
You just proved the C devs point..
109.
by TinkersW 2y ago
I really only care about performance in a SIMD sense, as not using SIMD means you aren't targeting performance to begin with(GPU == SIMD, CPU SSE/AVX == SIMD) Branches fall off vs cmov/select as your lane count increases, the
110.
by TinkersW 2y ago
A real branch is useful if you can realistically skip a bunch of work, but this requires all the lanes to agree, on a GPU that means 32 to 64 lanes need to all agree, also for something basic like a few arithmetic ops there is no point.
111.
by TinkersW 2y ago
It is weird how long misinformation like this sticks around, the conditional move/select approach has been superior for decades on both CPU & GPU, but somehow some people still write the other approach as an "optimization&quot
112.
by TinkersW 2y ago
If you already used C++20 you aren't meaningfully behind, very little of interest has been introduced since then, and much of it isn't usable yet because of implementation issues.
113.
by TinkersW 2y ago
Just ban ranges lib, it is hot garbage anyway. The compilers are able to optimize lambdas fairly well nowadays(when inlined), I wouldn't be that concerned.
114.
by TinkersW 2y ago
Ya that is rather disingenuous, modules aren't ready, and likely won't be for another 5 years. Also they are difficult to switch to, so I would expect very few established projects to bother.
115.
by TinkersW 2y ago
What is annoying is that this effects everyone in CA, even if you don't live in a fire prone area. They make you pay for the idiots living in these areas.
116.
by TinkersW 2y ago
Em? Seems reasonable, ray tracing a BVH is inherently slow AF because it diverges like mad(SIMD no like).
117.
by TinkersW 2y ago
No chance, far too loud, and I doubt Boom will get approval either
118.
by TinkersW 2y ago
The article seems to conflate C and C++ in its very first sentence, though in reality these are very different languages. In C++ you can use std::array, and you can make your SIMD containers use restrict to make it more like Fortran. Anywa
119.
by TinkersW 2y ago
This reads like jibberish. C functions can't be vectorized? WTF are you talking about? You can certainly pass vector registers to functions. Exp can also be vectorized, AVX512 even includes specific instructions to make it easier.( the
120.
by TinkersW 2y ago
AI sure, which is good, as I'd rather not have giant companies in the US monopolizing it. If they open source it and undercut OpenAI etc all the better GPU: nope, that would take much longer, Nvidia/ASML/TSMC is too far ahead

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