chrchang523

11 ms·

61.
by chrchang523 4y ago
I’m actually not criticizing SBF here. I am criticizing people, possibly including myself, who should have developed more realistic and convincing models clarifying why his behavior was increasingly suboptimal despite his near-linear person
62.
by chrchang523 4y ago
In SBF’s case, I think there was actually an academic failure: there was something very important that he should have been taught, but wasn’t. https://mobile.twitter.com/SBF_FTX/status/133725070407583334... https
63.
by chrchang523 4y ago
This is incidentally a valid reason for HN to blacklist the NYT domain, at least until a formal reversal of the policy.
64.
by chrchang523 4y ago
I finally started seriously using a M1 work laptop yesterday, and I'm impressed. More than twice as fast on a compute-intensive job as my personal 2015 MBP, with a binary compiled for x86 and with hand-coded SIMD instructions.
65.
by chrchang523 4y ago
That was my previous experience, but have you tried linking to AMD AOCL recently? I would not expect the performance gap between Intel MKL and AMD AOCL to still be as large as you describe on a Zen 3.
66.
by chrchang523 4y ago
I’ve actually heard that bullying has been dramatically decreased in public schools over the last generation. (People complain about feminization of education, and I suspect they have a valid point, but that trend comes with some upsides.)
67.
by chrchang523 4y ago
I use a double-ended stack allocator for most allocations in personal C projects. The second end adds a significant amount of flexibility; temporary allocations can accumulate at one end of the stack without preventing a longer-lasting all
68.
by chrchang523 4y ago
"An example is the Smith-Waterman algorithm for genomics processing" Sure, they can advertise that. But are the vector units on Intel/AMD/ARM processors really not good enough? "Debunking the 100X GPU vs. CPU Myth&q
69.
by chrchang523 4y ago
This model is not consistent with what we've seen in Japan over the past several decades.
70.
by chrchang523 4y ago
Yes, when I learned about this practice, that significantly changed my understanding of the NIMBY problem's solution space. Although high property taxes incidentally constrain NIMBY behavior, they're a cure worse than the disease.
71.
by chrchang523 4y ago
This is a bit overstated. Yes, FPGA accelerators can be used effectively in some common genomics workflows. However, my experience is that the right software running on regular Intel/AMD/ARM processors is very competitive with F
72.
by chrchang523 4y ago
My understanding is that the Winograd minimal filtering algorithms used in cuDNN are different from the O(n^2.37) Coppersmith-Winograd-descended matrix multiplication algorithms. But I acknowledge that these can be considered cousins, prod
73.
by chrchang523 4y ago
Sometimes. In the case of matrix multiplication, there is a pretty large backlog of "galactic algorithms" going down to ~O(n^2.373) that haven't yet led to real-world improvements. Strassen's ~O(n^2.807) algorithm is o
74.
by chrchang523 4y ago
Same here. My use case was simple — a bunch of static pages — so render.com isn’t even charging me.
75.
by chrchang523 4y ago
For the same reason, you’d never intentionally stop at $0 (unless the deck is exhausted). You can always get back to $0 by drawing the rest of the deck, and there’s a 50% chance of going up a dollar on the next card.
76.
by chrchang523 4y ago
The problem, at least in California, is that there is too much of an incentive for a long-time resident to not sell even if they want to move out permanently. Because they are paying extremely low property taxes that cannot be passed on to
77.
by chrchang523 4y ago
This works, but I'd add the following: always keep your eyes open for "dirty work" that you seem to enjoy more than most other people. That represents an opportunity to make disproportionate contributions. Relatedly, you sho
78.
by chrchang523 4y ago
In your case, how much compatibility is lost from using C99 over C89? (I'm comfortable with C99 and still write some low-level multiplatform code in it, but losing the ability to declare variables where they're first used is a br
79.
by chrchang523 4y ago
One has to be particularly careful with climate policy because fuel prices have a long track record of high political relevance.
80.
by chrchang523 4y ago
(2009)
81.
by chrchang523 4y ago
See also: https://www.lesswrong.com/posts/wkuDgmpxwbu2M2k3w/you-have-a... With no weirdness points, you duplicate others' work. With too many weirdness points, you're almost certainly wrong. The sweet
82.
by chrchang523 4y ago
That isn't the issue here; the requested "Taiwan, China"/"Chinese Taipei" labeling does still distinguish the source.
83.
by chrchang523 4y ago
(2019)
84.
by chrchang523 4y ago
It sounds like you're misevaluating your technical interview performance. You can feel like you're "bombing" an interview, while still performing above expectation. Some interviewers ask hard technical questions, don&#
85.
by chrchang523 4y ago
Regarding the bit “compress” operation, this is supported in hardware (PEXT instruction) by Haswell and newer processors, though unfortunately most AMD processors have poor implementations. I’ve found it to be quite handy when implementing
86.
by chrchang523 4y ago
That's a contributor to how the math team continues to be successful today, but the more interesting question is how they initially became world-class ~15 years ago. Frazer is clearly responsible for the latter.
87.
by chrchang523 4y ago
At a time when only 4% of the population had graduate degrees, if 25% of married grad-degree-holders were married to another grad-degree-holder, that would constitute a large preference in favor of other graduates.
88.
by chrchang523 4y ago
“Something like 7%” is noticeably less than twice 4%, so no, I didn’t make that assumption. (I also explicitly stated that this was a back-of-the-napkin-quality analysis.)
89.
by chrchang523 4y ago
The math is trickier than that: - If 4% of parents have degrees, something like 7% of the next generation has at least one parent with a degree. Because children have two parents, and only one of those two parents needs to have a degree.
90.
by chrchang523 4y ago
I believe Lemire's point is that the compiler is still able to inline the function despite the generic definition, so at least in this somewhat narrow case generics are a zero-cost abstraction.

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