markhahn

12 ms·

61.
by markhahn 7mo ago
General Parallel Units
62.
by markhahn 7mo ago
people say this a lot, but with little technical justification. gpus have had cache for a long time. cpus have had simd for a long time. it's not even true that the cpu memory interface is somehow optimized for latency - it's got
63.
by markhahn 7mo ago
Maybe I'm not getting it. Doesn't the problem start with ever deleting a passkey? That is: how do you ever know you don't need it anymore? Also, what is the alternative? Just a password that you store in the vault? Seems l
64.
by markhahn 7mo ago
that seems like an excellent reason to avoid a buggy platform, as if there weren't other adequate reasons...
65.
by markhahn 7mo ago
Does anyone believe he's correct? That is, not lying? That is, abusing the office, violating his oath? If we don't impeach for this, we might as well surrender to MAGA.
66.
by markhahn 8mo ago
neither democracy nor being a market economy implies the American state of litigiousness. it's always interesting to hear the silent part out loud. in this case, he's saying "I can get what I want because I can game the cour
67.
by markhahn 8mo ago
is it terrorism if it's a corporation who is in terror? no: terror is strictly about civilians.
68.
by markhahn 8mo ago
Maybe, but I'm skeptical, because current DCs are not designed to minimize footprint. Has anyone even built a two-story DC? Obviously cooling is always an issue, but not, directly, land. Now that I think of it, a big hydro dam would
69.
by markhahn 8mo ago
50MW is on the small side for an AI cluster - probably less than 50k gpus. if the current satellite model dissipates 5kW, you can't just add a GPU (+1kW). maybe removing most of the downlink stuff lets you put in 2 GPUs? so if you ha
70.
by markhahn 8mo ago
Linaro (need Allinea) DDT?
71.
by markhahn 9mo ago
fwiw, I tcdumped between two systems running fedora43 and saw no chaff. (one packet out, one reply, one tcp ack.)
72.
by markhahn 9mo ago
so you're saying wildfires are kind of like a war, so DJT has fixed 9 wars!
73.
by markhahn 9mo ago
oh, darn. my least favorite walled garden / vertical monopoly / rentseeker will have to raise prices. I'm sure they can spin this as a quality improvement.
74.
by markhahn 9mo ago
Most of this was "enthusiasts playing with bigboy stuff", but it turns out ok in the end.
75.
by markhahn 9mo ago
why do you think lightweight uses will ever scale to lots of cores? the standard consumer computer of today has only a few cores that race-to-sleep, because there simply isn't that much to do. where do you imagine the parallel work wi
76.
by markhahn 9mo ago
not really - you can certainly put lots of lightweight services on it, but they don't scale. because each core doesn't really get that much cache or memory bandwidth. it's not bad, just not better .
77.
by markhahn 9mo ago
no, you really can't. NVidia's use of "cores" is simply wrong. unless you think a core is a simple scalar ALU. but cores haven't been like that for decades. or would you like to count cores in a current AMD or Int
78.
by markhahn 9mo ago
MPI is fine, but have you heard of threads?
79.
by markhahn 9mo ago
these big high-core systems do scale, really well, on the workloads they're intended for. not games, desktops, web/db servers, lightweight stuff like that. but scientific, engineering - simulations and the like, they fly! enoug
80.
by markhahn 9mo ago
those who remember the past are doomed to repeat it? seriously, this doesn't seem like a useful argument, regardless of whether true. the fact that humans have committed ecocide in the past doesn't seem like a reason to continue.
81.
by markhahn 9mo ago
Dredging is immoral - so incredibly destructive to the ecosystem. Do you harvest apples by bulldozing the orchard and sifting out the fruit? It's bad enough that so much of our farming is still based on tilling. I don't really u
82.
by markhahn 10mo ago
no, "doorknob" is merely higher-frequency due to its other meanings. it's never used in this context - probably because it's a terrible affordance (see Norman - push or pull?)
83.
by markhahn 10mo ago
by not conflating "internet" with "social network / doomscrolling". no, seriously, that's the main thing. nothing about "internet" says you have to let ad-motivated recommendation engines fill your g
84.
by markhahn 10mo ago
why not use "affordances"? it's the correct word, and even though it's low-frequency, wouldn't that pull people into the article?
85.
by markhahn 10mo ago
yes, it's misleading clickbait. the author's apparent epiphany is realizing that init is just a program. the kernel is, of course, software as well, but it does injustice to both "program" and "kernel" to lu
86.
by markhahn 10mo ago
of course. init is just pid 1. it can be a copy of "Hello, World!" (suitably linked) or whatever.
87.
by markhahn 10mo ago
I'm curious why you think it's overcomplicated. That is: this seemed like the first 3 minutes of the first lecture on an freshman OS course, or similar in any book on systems. The complication you refer to - is it just from the c
88.
by markhahn 10mo ago
isn't this obvious? maybe the audience is people who've never heard of init or thought about kernel vs userspace.
89.
by markhahn 10mo ago
You must surely know that Apple didn't originate any of that.
90.
by markhahn 10mo ago
cats being cats, perhaps a little verbal reticence is what it takes to inspire them ;)

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