Posts by wim_v12e@cybre.space
(DIR) Post #AL3myrxCT0VhmNuSZc by wim_v12e@cybre.space
2022-07-01T21:28:48Z
2 likes, 6 repeats
@EU_Commission These claims go entirely against the consensus in the field.The projected growth in AI, blockchain, IoT will lead to a massive rise in emissions, not a reduction. And contrary to your claim, none of these technologies is essential in reducing emissions.Quantum Computing is unlikely to be mainstream by 2050 and has currently no promise of energy efficiency. There are much more promising compute technologies. Space-based services cause emissions in the upper atmosphere which leads to additional warming of those layers, making global warming worse.Please check with experts before posting things like this.(fwiw, I am an expert in low-carbon and sustainable computing so green & digital transition is my area)
(DIR) Post #AL4zchsijBKqjSXKu8 by wim_v12e@cybre.space
2022-07-02T11:26:10Z
0 likes, 0 repeats
@fitheach How nice to have mystery in your life
(DIR) Post #AL5T6Nd9TzGZHakwqG by wim_v12e@cybre.space
2022-07-02T16:51:47Z
0 likes, 0 repeats
@volume I happen to do research on quantum computing. I am not going to try and change your mind. Quantum computers will become more mainstream and it could be within 20 years. For cracking crypto, it will be sooner, but those machines will consume a lot of electricity.Quantum computers have advantages for certain classes of problems, and that includes weather and climate simulations, so eventually some good could come out of that. But quantum computing is a distraction. It is not what we need to tackle the climate crisis.
(DIR) Post #AL92oN5MwvT4CjXwQ4 by wim_v12e@cybre.space
2022-07-04T09:59:30Z
0 likes, 0 repeats
@gargron @EU_Commission If the Commission wants to communicate to the public, then they have to communicate back the public's views to the decision makers as well.
(DIR) Post #AL9CqUbaxeSVeCGo9A by wim_v12e@cybre.space
2022-06-15T09:48:49Z
0 likes, 2 repeats
Please come join my team! I have a fully funded Research Associate position available, for 30 months at the University of Glasgow, UK, pay scale £36,382 - £40,927.Come work with me (https://www.gla.ac.uk/schools/computing/staff/wimvanderbauwhede/) and Jose Cano Reyes (https://www.gla.ac.uk/schools/computing/staff/josecanoreyes/) on Morello-HAT, a project to develop high-level APIs and tooling for #Morello (https://www.arm.com/blogs/blueprint/morello), Arm's novel #CHERI (https://www.cl.cam.ac.uk/research/security/ctsrd/cheri/)-based hardware capability platform which aims to revolutionise security through a novel hardware architecture. The aim of the Morello-Hat project is to develop hardware capability APIs for use in Rust, Go and Dart so that developers can fully leverage the potential of hardware capabilities to secure their apps.This position is full time and fixed term to 31st December 2024. https://www.jobs.ac.uk/job/CQP935/research-associate
(DIR) Post #ALw2hulHxEGs5j4M8e by wim_v12e@cybre.space
2022-07-27T17:50:17Z
0 likes, 0 repeats
TIL: there is now Akkoma, a fork of Pleroma with less focus on "free speech" and more on "free software".https://coffee-and-dreams.uk/development/2022/06/24/akkoma.html
(DIR) Post #AM34eErSqI6NHm3J0i by wim_v12e@cybre.space
2022-07-31T10:56:35Z
1 likes, 1 repeats
I went down a deep rabbit hole (and I'm still falling). It started out with the idea of trying to compile #Uxntal into LLVM IR (and maybe WASM). Now I've jumped ships mid-course and changed to C as a target; I will probably, out of sheer perverseness, do Fortran as well. So this is decompilation of a stack-based assembly language into a non-stack-based higher-level language.It's one of these "how hard can it be?" things. The answer in short is, it's impossible; but there are degrees of approximation, and they are increasingly difficult. So it's a lot of fun.#compilers #decompilation
(DIR) Post #AM3IAyIkjP0wt1kraq by wim_v12e@cybre.space
2022-07-31T13:36:44Z
0 likes, 0 repeats
@urusan most people I mention it to just aren't interested.
(DIR) Post #AM3ookDrgzYlL2Tg8G by wim_v12e@cybre.space
2022-07-31T15:47:15Z
0 likes, 0 repeats
You may think watching TV is an innocuous pastime.And telling people to watch less TV must certainly be one of the most unpopular messages ever.Nevertheless, people should be aware that the contributions to CO2 emissions (and so to global warming) from internet TV and video are already larger than those from flying.And while emissions from flying are only set to grow slowly, those from internet TV and video are rising rapidly. This is all down to more and more people watching more and more TV and video at higher and higher resolutions. And it is entirely unsustainable.#FrugalComputing #ClimateEmergency
(DIR) Post #AM3oolEFx1T0SXfVNg by wim_v12e@cybre.space
2022-07-31T19:09:52Z
0 likes, 0 repeats
@Sandra I know, the effect on warming of the exhausts at high altitude are worse. So flying is definitely bad. My point is only that with the projected growth rates, computing will be far worse.
(DIR) Post #AM67J1rveFnFplarAG by wim_v12e@cybre.space
2022-07-31T12:45:15Z
1 likes, 0 repeats
@csepp Yes, that's it. In Uxntal you can compute the address you want to jump to. So the only way to know that value for sure is to run the program, and you can't be sure that it will every terminate. There is of course an obvious way around that which is to delegate all such constructs to runtime, by integrating the VM into the compiler. So when I say "impossible", it means "impossible to create a direct translation to a language that does not allow jumps to computed addresses". I am a bit tempted to allow e.g. linear operations on constants, as these are mostly likely the most common ones, but I'm not sufficiently motivated to implement that. My approach is indeed to create SSA-style registers, very much like LLVM does. But looking at LLVM IR in more detail, there is actually very little to be gained by using it as a target rather than C. And in C I don't need to insert phi functions.
(DIR) Post #AM74JhhpzctKsxSnRY by wim_v12e@cybre.space
2022-08-02T09:14:34Z
1 likes, 0 repeats
@lanodan Ah, nice, I didn't know about that. Looks a bit like a middle ground between C and LLVM IR. It would be a great target for my compiler.
(DIR) Post #AMBa2IjFZwPLf8i30q by wim_v12e@cybre.space
2022-07-10T11:23:49Z
0 likes, 0 repeats
@rysiek If think what matters most is adequate masking.Not wearing a mask means putting other people at risk. If one thing has become clear in this pandemic, it is that (in the UK), 90% of people do not care enough about other people to wear a mask.Also, booster effectiveness wanes after 6 months and it doesn't look like most people will get another one any time soon. And the vaccine or booster does not prevent long covid, you have about 1 chance in 10 of getting it when you get covid.ICU admissions are not up a lot but in Scotland they are definitely up, and non-ICU hospitalisations are really high, it puts a high burden on the health service. @maloki
(DIR) Post #AMBcC9slWa8j1tzKXA by wim_v12e@cybre.space
2022-08-04T13:58:46Z
0 likes, 1 repeats
@realcaseyrollins @rysiek @maloki Masks are very effective, especially FFP2/FFP3Here is a very recent study (July 31, 2022. Preprint)https://www.medrxiv.org/content/10.1101/2022.07.28.22278153v1.article-infoFor the benefits of wearing FFP2/FFP3 (N95/N99), seehttps://www.cidrap.umn.edu/news-perspective/2021/10/commentary-what-can-masks-do-part-1-science-behind-covid-19-protection
(DIR) Post #AMBkuyeGwB50qy5iiG by wim_v12e@cybre.space
2022-08-04T15:36:31Z
0 likes, 0 repeats
@realcaseyrollins @rysiek @maloki The paper says "We used this data to make an evidence-based correlation between wearing masks of any type and the incidence of COVID-19 disease or positive COVID-19 test."I would of course recommend that you wear at least FFP2. I wear only FFP3 now.
(DIR) Post #AMBlr2H1cLXctMtzHc by wim_v12e@cybre.space
2022-08-04T15:47:01Z
0 likes, 0 repeats
@realcaseyrollins @rysiek @maloki The main purpose of wearing masks is to protect others, not yourself though. They are much more effective at stopping what goes out than what goes in. Your natural immunity may stop you from getting ill but it does not mean you can't be spreading the virus. If you are an asymptomatic spreader, you would not even know that you are transmitting the virus to others (unless you take daily PCR tests). So I would still recommend that you wear a mask, esp. in crowded enclosed spaces.
(DIR) Post #AMBmtrnx64tpFKDX5E by wim_v12e@cybre.space
2022-08-04T15:58:43Z
0 likes, 0 repeats
@realcaseyrollins @rysiek @maloki I'm sorry but that is a bit of a misconception. The current vaccines protect only against severe illness and death, not against infection. For immunosuppressed people, being vaccinated does not guarantee that they will be fine. It only means that they *probably* won't die. And "vulnerable" or "immunosuppressed" is much more common than you think: anyone who uses e.g. medicines for asthma or rheumatoid arthritis is immunosuppressed. That is a very large group of people. We should do our best to protect them, and the best way to do that is wearing good masks.Also, when you get covid, you have a 10% chance of getting long covid, which is a terrible illness.
(DIR) Post #AMBqVwXKFhZqmwHvV2 by wim_v12e@cybre.space
2022-08-04T16:39:13Z
0 likes, 0 repeats
@realcaseyrollins @rysiek @maloki I didn't say that people should not get vaccinated. Everyone should get vaccinated, that is obvious.But for vulnerable people that is simply not enough to protect them. That is why they are vulnerable.
(DIR) Post #AMBsmnWvBvFXgcGPoW by wim_v12e@cybre.space
2022-08-04T17:04:40Z
0 likes, 0 repeats
@realcaseyrollins @rysiek @maloki Over the whole population, vaccine+booster protects about 90% against severe illness. But of course the other 10% are precisely those that are vulnerable. After 4 months it drops to 80%. Protection against illness is a lot less good, drops to <30% after 4 months.
(DIR) Post #AMDw98hKU7GuKXoXlQ by wim_v12e@cybre.space
2022-08-05T16:37:58Z
1 likes, 0 repeats
"Who made me the genius I am today,The mathematician that others all quote?Who's the professor that made me that way,The greatest that ever got chalk on his coat?One man deserves the credit,One man deserves the blame,and Nicolai Ivanovich #Lobachevsky is his name. Oy!Nicolai Ivanovich Lobache...I am never forget the day I first meet the great Lobachevsky.In one word he told me secret of success in mathematics: Plagiarize!"Full lyrics:http://maths.dur.ac.uk/Ug/projects/resources/lobachev.htmhttps://www.youtube.com/watch?v=UQHaGhC7C2E