mrb

16 ms·

181.
by mrb 3y ago
Seeing mmsc's post history, especially computer security related comments, I presume he was just being sarcastic :)
182.
by mrb 3y ago
" people's work would not be specialized enough to get us there " This reminded me of one of the arguments in "Selfish reasons to want more humans" https://news.ycombinator.com/item?id=39497686 : we
183.
by mrb 3y ago
I didn't mean 5 Gbps USB ports have disappeared, but rather: most machines in the last ~10 years (~8-9 years?) have some 10 Gbps ports. Therefore if he is plugging a fast SSD in a slow 5 Gbps port, my assumption was that he has no 10 G
184.
by mrb 3y ago
On GigE or even 2.5G it shouldn't slow things down, as "sha1sum" on my 4-year-old CPU can process at ~400 MB/s (~3.2 Gbit/s). But I don't bother to use tee to compute the hash in parallel because after the disk
185.
by mrb 3y ago
Yes USB3.0 is 500 MB/s but are you sure your bus is 3.0? It would imply your machine is 10+ years old. Most likely it's 3.1 or newer which is 1000 MB/s. And again, benchmarking /dev/zero is invalid anyway as I expla
186.
by mrb 3y ago
Your example proves me right. Your drive should be capable of 1000 MB/s but O_DIRECT reduces performance to 400 MB/s. This matters in the specific use case of "netcat | gunzip | dd" as the compressed data rate on GigE wi
187.
by mrb 3y ago
Your exact command works reliably but is inefficient. And it works by design, not accident. For starters, the default block size in most netcat implementations is tiny like 4 kB or less. So there is a higher CPU and I/O overhead. And i
188.
by mrb 3y ago
NVMe/TCP or Clonezilla are vastly more moving parts and chances to mess up the options, compared to dd. In fact, the author's solution exposes his NVMe to unauthenticated remote write access by any number of clients(!) By comparis
189.
by mrb 3y ago
Partial reads won't corrupt the data. Dd will issue other read() until 1MB of data is buffered. The iflag=fullblock is only useful when counting or skipping bytes or doing direct I/O. See line 1647: https://github.com&#
190.
by mrb 3y ago
In the author's scenario, there are zero benefits in using NVMe/TCP, as he just ends up doing a serial block copy using dd(1) so he's not leveraging concurrent I/O. All the complex commands can be replaced by a simple ne
191.
by mrb 3y ago
Off-topic but: I love the font on the website. At first I thought it was the classic Computer Modern font (used in LateX). But nope. Upon inspection of the stylesheet, it's https://edwardtufte.github.io/et-book/ w
192.
by mrb 3y ago
This is the opposite of what you think. This is probably 10x faster to render than a traditional image chart. Font rendering engines are extremely well optimized. The downside is not going to be poor performance but lack of flexibility. You
193.
by mrb 3y ago
Obviously the salesman had made a mistake. He must have had a floor price, and accidentally went below it in the heat of that powerful negotiation tactic. And it was impossible to resume negotiation after that, as he had lost all credibilit
194.
by mrb 3y ago
10 years ago I walked in a dealership to buy a used car and employed a negotiation tactic that I had recently learned online. The problem was that the technical price negotiation worked so incredibly well that I basically got (politely) thr
195.
by mrb 3y ago
" it might influence his opinion as they're a competitor " Or, as is just often the case, he competes with Nvidia because he has a different opinion (of their vision).
196.
by mrb 3y ago
As someone who often deals with headless machines, the best solution I have found for using my laptop as a monitor is this: https://www.amazon.com/dp/B0BJ2YDV7Q It's basically a chip to capture the HDMI signal fro
197.
by mrb 3y ago
Here is the best video of the landslide I could find: https://youtu.be/SUD0hQjueI0
198.
by mrb 3y ago
200 billion PHP is 3.58 billion USD. The farm is 3500 MW and has 4000 MWh of battery storage. As of today 1 Wp (peak watt) of mainstream solar panels costs about 0.16 USD [1], and 1 kWh of li-ion battery costs about 140 USD [2]. Which means
199.
by mrb 3y ago
Zero problems? Very unlikely. The thing about memory corruption is that it tends to create problems that most people don't recognize as memory corruption issues. A random BSOD or freeze. A corrupted file. A video glitch. A website&#x2F
200.
by mrb 3y ago
My intuition tells me humans will always have needs that AI can't fulfill. If AI does more and more jobs, cheaper, faster, and better than humans, then the price of these services and goods are going to drop, and that means people will
201.
by mrb 3y ago
" I’ve just accepted that I’m going to feel less and less useful as time goes by " It's probably the same feeling farmers had in the beginning of the 20th century when they started seeing industrialized farming technologies (
202.
by mrb 3y ago
Use https://vast.ai and rent a machine for as long as you need (minutes, hours, days). You pick the OS image, and you get a root shell to play with. An RTX 4090 currently costs $0.50 per hour. It literally took me less than 15 m
203.
by mrb 3y ago
How about just plexiglass sheets mounted on the 6 faces of the cube? With screws so they can be removed easily.
204.
by mrb 3y ago
Ah yes, the corruption power of all the money they must be making with that extra $0.05 when they ask to mail $2.00 for an international stamp that costs $1.95...
205.
by mrb 3y ago
This is the tower on Google Street View: https://www.google.com/maps/@33.821395,-87.274311,3a,49.7y,1... As this one is indeed next to the MarJac poultry farm that the station owner mentioned in his Facebook post [1].
206.
by mrb 3y ago
FTA: "in some cases, the links can also be maintained for weeks at a time" I think there is a lot of variance. The article also states about 266,141 “laser acquisitions” per day, which, if every laser link stayed up for the exac
207.
by mrb 3y ago
Good point.
208.
by mrb 3y ago
So that is "432 Mbit/s per laser, and 9000 lasers total". I don't know you guys but I find that statement much more relatable than "42 PB/day". Interestingly, they also say each laser "can sustain a 1
209.
by mrb 3y ago
He put too many zeroes. It should be "15,000,000.00 in" or 15 million.
210.
by mrb 3y ago
It is required according to the standard. But in practice most PDF viewers don't care. They may complain the PDF is "damaged" or "no valid xref was found", but they will render it perfectly fine.

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