KolenCh

29 ms·

1. 331.▲
   by KolenCh 5y ago

   Well, it is a crisis to people who bet their career in this field. These people are here to stay (in the field) and since there are no experimental progress that shed lights on fundamental physics, the effort of all these people are stuck i
2. 332.▲
   by KolenCh 5y ago

   "The Trouble with Physics" by Lee Smolin also talk about this, and the general "group-think" situation of theoretical physics.
3. 333.▲
   by KolenCh 5y ago

   Summary: # Background material - Fundamental (particle) Physics has no progress since the 1970s. - discovery of Higgs is confirmation of old Physics. - other predicted fundamental particles has never been discovered. - Fine tu
4. 334.▲
   by KolenCh 5y ago

   The situation in Taiwan is different. There are polls in the past indicating non-negligible amount of Taiwanese (I forgot the numbers, but IIRC it is closer to 50-50 split than only a small fraction) support “merging back” to China. (That w
5. 335.▲
   by KolenCh 5y ago

   > It is not about projecting my experience (I was not answering to OP, but to a comment) or "about the meaning of past event". I believe paternalistic attitudes sound good because words are comforting, but they are not helpful,
6. 336.▲
   by KolenCh 5y ago

   > I understand that the "the work you did was not for nothing" angle of reading is comforting, but I have to disagree. I have to disagree. If you read carefully, they said, > You're learned things about yourself... This
7. 337.▲
   by KolenCh 5y ago

   This is incredibly naive. The only non-naive thing is that it is proportional to ΔT, which is simple Physics. I don’t know why you need to quote building science here. For non naive calculation, one would expect using real world data to est
8. 338.▲
   by KolenCh 5y ago

   Kind of true, but is it widely used form of producing heat? From where I live, the heater burn gas from PG&E. So it is still doing the inefficient kind of turning energy into pure heat. I’m still undecided on the subject (whether crypto
9. 339.▲
   by KolenCh 5y ago

   Numba can compile in “no Python” mode only with a subset of Python. Eg classes is limited and is still experimental. Also I think string manipulation is slow but the doc has details. If you want to specify the type (for example for aot or j
10. 340.▲
    by KolenCh 5y ago

    I agree C kind of stand out from that list (I don't know lisp). But I think as C is a small language, some people can write pretty simple to read C. But I guess the term is used to describe C as well because of how "close to metal
11. 341.▲
    by KolenCh 5y ago

    Trying this on an HP Stream 7 resulted in infinite loop of showing the Chrome logo for a second then black screen.
12. 342.▲
    by KolenCh 5y ago

    For simple things only. For example, the jit class in Numba is still experimental, and quite limited. So if you need to write non-trivial class, even if you jit each method, dropping to Python can be a problem (say with lots of instances.)
13. 343.▲
    by KolenCh 5y ago

    Thanks. But how LoopVectorization.jl is helping here, say comparing to C/Fortran optimized w.r.t. to the CPU? Is there somewhere in their doc mentioning this?
14. 344.▲
    by KolenCh 5y ago

    Thanks! Very interesting. Link here for others: https://octavian.julialinearalgebra.org/stable/
15. 345.▲
    by KolenCh 5y ago

    Any reference to how Julia outperform Fortran in BLAS? I thought it is/was calling existing BLAS libraries?
16. 346.▲
    by KolenCh 5y ago

    Virtualization is the only way they can give users a Mac experience while still being a walled garden with the associated security. So may be they never will give us Mac experience on iPad (including the shell, forking processes, compile an
17. 347.▲
    by KolenCh 5y ago

    Memory alignment is important and languages let you control that and/or make them align automatically given sensible assumptions does have an edge here. Just a random example, I wrote a two lines Python function using Numba jit, becaus
18. 348.▲
    by KolenCh 5y ago

    > Usually no testing on a small test case / data set before going to the big one; I don't understand how "no testing on small test case" will resulted in "loads of compute hours get wasted because of accidentally
19. 349.▲
    by KolenCh 5y ago

    Oh, CERN? I think they have made PyROOT which is horrible? (And even a jupyter kernel for interactive use.) In terms of scripting, a professor once showed us a workflow script from his old days written entirely in bash and is very very long
20. 350.▲
    by KolenCh 5y ago

    I was referring to https://en.wikipedia.org/wiki/Write-only_language and seems like Mathematica is the only CAS on the list. Actually as a functional language it is not bad. It is not the programming paradigm that it i
21. 351.▲
    by KolenCh 5y ago

    Just my 2 cents, this is what I find working for me: - I found that I can retain much better if the course has readings. It can be lecture notes in textbook form (not presentation), or just a textbook. I found that without this, if all they
22. 352.▲
    by KolenCh 5y ago

    I think you are referring to workflow managers? Yes, roll your own workflow manager is a bad practice but many do anyway.
23. 353.▲
    by KolenCh 5y ago

    Python and Julia are a (may be a distant) 3rd and 4th. Using Python on HPC system, depending on who you ask, is kind of cheating as the main work is always C/C++ (or Fortran). So it is still really just C/C++ and Fortran. Julia is
24. 354.▲
    by KolenCh 5y ago

    It is a horrible language, I think some called it a write-only language. But what it can do is powerful. For something there’s no alternative. They have provided a Python interface and I always want to use the Python interface more to work
25. 355.▲
    by KolenCh 5y ago

    I also do this on macOS with Chrome, but I found that if I join mega Zoom call (say hundreds of people) then the video will suddenly freeze after some random amount of time. That makes it unreliable and especially nervous when giving a pres
26. 356.▲
    by KolenCh 5y ago

    This is something I hate to love and love to hate. I can avoid MS Office, but I can’t avoid Adobe like Lightroom that is my 2nd nature and hard to completely replace (too much is tangled together.)
27. 357.▲
    by KolenCh 5y ago

    I agree. I can never work effectively in LaTeX deal to the global namespace and in general very stateful behavior. LuaLaTeX is quite fast nowadays though. Unless you need special glyph support, it’s better than XeLaTeX speed wise.
28. 358.▲
    by KolenCh 5y ago

    Good posture is also important. Eg when leaning on the back, the tail bone should be the part that is touching the back of the chair, and the upper part of the back is barely touching, or even away from the chair. Although I learnt this, it
29. 359.▲
    by KolenCh 5y ago

    2nd this. I’m not expert on this, it seems it is something like even if you’re approved, you still need to wait in another line to get the green card, and the back log is especially long for Indian. The Biden admin somewhat recently has tri
30. 360.▲
    by KolenCh 5y ago

    The trend kick started when the iPhone X has a OLED screen, and people start mentioning you can save a lot of power by turning on “invert color” switch. And then gradually apps are adding dark mode as a kind of differentiation factor. Gradu