tntn

8 ms·

31.
by tntn 7y ago
I think that 'IAmEveryone likely means that people aren't lifetime-limited. Most people aren't reproducing after 40, but expected lifespan is much more than that so even if it doubled there wouldn't be more children.
32.
Habana Labs Announces Gaudi AI Training Processor(habana.ai)
1 points by tntn 7y ago|0 comments
33.
by tntn 7y ago
> Science needs models based on mechanistic understanding of the underlying phenomena. A model that merely predicts is useful for engineers, not scientists I'm not sure I agree. I'm aware of quite a bit of supercomputing time t
34.
by tntn 7y ago
> generic programmers I would argue that most would agree that a "generic programmer" does not have a degree in math or a minor in bioengineering. There are a lot of programmers who never studied any STEM outside of a CS curric
35.
by tntn 7y ago
Modern GPUs are in a very real sense the spiritual successors of the Connection Machine. So in some sense the "sort of analogue" has already arrived.
36.
by tntn 7y ago
BOOM uses the rocketchip ALU, which uses the Chisel `+`, which probably compiles down to the verilog `+`, which probably gets synthesized to the appropriate width adder in the standard cell library of the vendor (e.g. TSMC or Xilinx). So fo
37.
by tntn 7y ago
> actually getting something physically superior Sometimes, sometimes not. What you are getting is a chip that passed more rigorous tests. That the lower end products have (or would have) failed those tests is not guaranteed. Companies c
38.
by tntn 7y ago
What do you find deeply unethical about it? I don't care how it's implemented - if it works as advertised and I decide to buy it for a given cost, seems like an ok deal. Said printer would not be good, I would not buy it. EDIT: FW
39.
by tntn 7y ago
It's comparable to an old school analog computer (like the ones used long ago to simulate differential equations) using optics instead of analog electronics. They build a physical analogue of a neural network that evaluates the desired
40.
by tntn 7y ago
There are not yet any good (cheap, reliable, composable) optical transistors.
41.
by tntn 7y ago
Note that wikichip redirects 12nm to 14nm. TSMC calls their 14nm node 16/12nm. All the 12,14,16 nm nodes from the various fabs are nearly the same.
42.
by tntn 7y ago
GPU L1 caches are typically not coherent, so flushing them is necessary on GPU architectures.
43.
by tntn 7y ago
As a minor note, LDAR and STLR are poorly named and are documented as providing multicopy atomicity in addition to acquire-release semantics and are the recommended way to implement C11 SeqCst. Some of the below is almost certainly incorrec
44.
by tntn 7y ago
> That means the L1 (and probably L2) caches are flushed every time you read or write to them on ARM systems. (x86 has stricter guarantees and almost "natively" implements SeqCst, so you won't have as many flushes on x86).
45.
by tntn 7y ago
Hm, yeah, that seems fair. I guess I was thinking of the periodic timer reset as part of the watchdog mechanism. Maybe another difference is whether the interaction with the timer is manual.
46.
by tntn 7y ago
A watchdog timer is so named because it watches for some undesirable condition (usually a hang) and takes action if the condition lasts too long. This sort of auto-rollback is not that because it doesn't detect if something is bad, jus
47.
by tntn 7y ago
Why didn't the IAU petition the FCC during the comment period for SpaceX's application? Seems sorta weird to wait for the first launch to express concerns when the application was submitted to the FCC many months ago (and I think
48.
by tntn 7y ago
Certainly increased acceptance rates for domestic students would impact which schools they go to. But do you have any data indicating that a) there are a significant number of domestic students who apply to STEM programs and get rejected fr
49.
by tntn 7y ago
60-80% of graduate students in STEM fields in the U.S. are international students. It seems like having 60-80% fewer graduates would accelerate the decline of American science.
50.
by tntn 7y ago
There goes 3 nines for June and for Q2. I guess everyone gets a 10% discount for the month? https://cloud.google.com/compute/sla
51.
by tntn 7y ago
Lol, talk about a straw man with the awful opencl-source-in-c-array. EDIT: props to the author for working on a language, but using that as an example of "confusing syntax" is comical.
52.
by tntn 7y ago
Right, the behavior for "out of bounds" addressing is frequently (ab)used. Tagged pointers have been used in loads of stuff. I think x86_64 prohibits this and the MMU will fault if there are interesting things in the high bits, bu
53.
by tntn 7y ago
There's no better way to get a recession than to have everyone acting like there is going to be a recession. Yield inversion indicates the market is starting to think there is going to be one.
54.
by tntn 7y ago
> I don't think they are hired via red black trees No, they were hired long ago via red-black trees and got promoted for building google plus.
55.
by tntn 7y ago
They aren't "charged with" anything. Some elementary particles happen to interact with one another in a particular and consistent way, and we label them according to how they behave with something we call charge. Electric cha
56.
by tntn 7y ago
> doesn't even apply to chips that don't do speculation in hardware This is an interesting way to put it. I would have said "applies to pretty much every CPU manufactured in the last decades." Your statement would mak
57.
by tntn 7y ago
> new chips will address [these vulnerabilities] It doesn't seem likely. The chipmakers will fix the vulnerabilities that break isolation between processes and between user-kernel, but the within-process issues will probably stick a
58.
by tntn 7y ago
But most of the examples in 'fulafel's comment already don't require recompiling for a new architecture. Node, ruby, Python, JVM languages... You just need a runtime for the desired architecture, which is still true for WASM
59.
by tntn 7y ago
To which the V8 developers say: > We might consider adjusting the precision of timers or removing them altogether as an attempt cripple the program’s ability to read timing side-channels. > Unfortunately we now know that this mitigati
60.
by tntn 7y ago
I think moore's law has spoiled a generation on what technology can do. It is extremely ridiculous that lithography has gotten so much better in the last few decades, and IMO it has resulted in a lot of people thinking that exponential

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