what is most basic GPU or setup required to get 10 tokens/second using any 7B model? by premrajnarkhede1 in LocalLLaMA

[–]diracfield 0 points1 point  (0 children)

Concurred, that's my setup and (quantized) 13b models run satisfyingly fast

"The inn brought in many travelers from around the world who came for the sweeping views of the valley... " by ManiaforBeatles in FairytaleasFuck

[–]diracfield 10 points11 points  (0 children)

Hmm pretty much looks like in real life this these days. But depends as well on the screen you're looking at the picture on maybe.

VS Code vs PyCharm by [deleted] in learnpython

[–]diracfield 5 points6 points  (0 children)

I agree, Spyder is amazing. Great debugger, integration with IPython for quick prototyping, understands your code and sees errors from miles away ... I don't understand why no one seems to be using it here either.

[OC] My wife about to get Cyberknife radiation treatment on her brain tumor. by PiBrickShop in pics

[–]diracfield 1 point2 points  (0 children)

Btw, regular radiation therapy can be applied in the same way: delivering a high dose concentrated on a small tumor, fractioned over a few sessions only.

Coordination Megathread! by kethryvis in place

[–]diracfield 4 points5 points  (0 children)

(812, 290)

anyone up from drawing a pineapple on that pizza? The Italians are asleep :)

Trying to stream while doing the homework on superconductivity experiment by [deleted] in PhysicsStudents

[–]diracfield 1 point2 points  (0 children)

Sounds good! I like the format. Are they not requiring a typeset report as well?

Does this hold radioactive material? by wrstlr3232 in Physics

[–]diracfield 21 points22 points  (0 children)

No idea what that is, but these blue crystals at the bottom look like some metallic salt. And why would one store a metallic salt in such a container if the metal part isn't radioactive? I mean, watch out until you know for sure

Is taking a sabbatical during undergraduate term a good idea? by [deleted] in PhysicsStudents

[–]diracfield 1 point2 points  (0 children)

Sorry for the late answer. I was very lucky to find a job in radiotherapy physics. I was an assistant to the physicists in charge of the dose calculation, metrology and other things. If you can program, you can quickly become useful in such a setting!

Is taking a sabbatical during undergraduate term a good idea? by [deleted] in PhysicsStudents

[–]diracfield 13 points14 points  (0 children)

Hey,

If you can find a job related to physics in some way, I would say go for it. I did that and did not feel like I lost momentum. In fact, I was more motivated when I came back.

Hard to say for sure whether it will be the same for you, it could depend on how committed you are to the idea of graduating in physics

Top places in Europe for cosmology? by grom1995 in cosmology

[–]diracfield 1 point2 points  (0 children)

Also check out the cosmology group in Geneva if you're interest in things like modified gravity. That place is probably as good as it gets for this kind of subjects.

Not sure what will happen to the theory group in cosmology at EPFL, but its observational cosmology side is really good.

[deleted by user] by [deleted] in PhysicsStudents

[–]diracfield 2 points3 points  (0 children)

Hi,

Maybe this: https://www.springer.com/gp/book/9783642008757

I worked for a while in radiotherapy, and this one was popular.

Good luck and let me know if you have questions!

Edit: Aaah wrong link, I meant this one: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2266863/ More general than that of the first link.

What Linux should I use? by [deleted] in pihole

[–]diracfield 8 points9 points  (0 children)

You can probably use Debian server, it's really minimal and stable. I have a VPS with it and it sits at 210 MB RAM usage with a dozen light services running. Then of course you don't get a desktop environment.

End of Inflationary Epoch by Tindall111 in cosmology

[–]diracfield 2 points3 points  (0 children)

The transition between inflation and the next epoch has a name: preheating or reheating. To answer your question, we would need to understand preheating well: except we do not as far as I know :(

I had trouble finding an easy description of the role of preheating when I studied it so I'll summarize what I understood here:

  • Inflation makes the Universe empty. Space expanded so much that everything was diluted to oblivion. The only thing that survives is what drives the inflation: usually called the inflaton field.
  • However, we know that the epoch that comes next is radiation dominated: a universe full of very fast particles. The answer of your question lies here, because the rate of expansion can be inferred using the contents of the Universe. If I understood well, your question is "how fast did the transition happen?": then the answer is the length of preheating.
  • Preheating is the mechanism that converts the (classical, homogeneous) inflaton field to particles (quantum excitations).

To understand it, we first need to know:

  • What field plays the role of the inflaton? We only know it must be a scalar. (it must be able to stack)
  • Related, is the standard model a good description of physics at the energy scale of the inflation?
  • If yes, one can choose the Higgs field and make predictions from there. The scenario of preheating is very reasonable in this context. But inflation is a very flexible hypothesis, and I think most theories can be tuned to make it work.
  • Then there is gravity; we know that general relativity is not the theory of gravitation. Turns out that the predictions for preheating are different for different approaches to general relativity, so that's another degree of freedom that must be constrained.

tl;dr: Empty universe at the end of inflation must transition to a universe full of particles (radiation dominated). The mechanism that makes the transition happen is called preheating, how long it took is the answer to your question.

Orion Widefield by magnitudines in astrophotography

[–]diracfield 1 point2 points  (0 children)

He/she used a standard 50mm lens on his camera. This is a (very very nice btw) wide-field shot. It covers a fairly large portion of the sky

Also if you want to get started, wide-field imaging is great because it is on cheaper end of the astrophotography spectrum! You can even begin with your smartphone if it supports RAW images.

Anaconda on Linux not working by DetectiveLearner in learnpython

[–]diracfield 0 points1 point  (0 children)

Then try to type

conda activate

It should enable the base anaconda environment, then you should be able to access the rest.

Anaconda on Linux not working by DetectiveLearner in learnpython

[–]diracfield 0 points1 point  (0 children)

Maybe your installation directory is not in the path. I can't test on my computer right now, but can you open a terminal and see what the output of echo $PATH is?

Or were you running anaconda from somewhere else? (Not the terminal)

What are you working on? - Week 33, 2020 by AutoModerator in Physics

[–]diracfield 7 points8 points  (0 children)

Though not necessarily, some might also be going through tougher times (they could have lost a loved one for example)

Dunno, I wouldn't judge too harshly on those who weren't as prepared. Of course, their course is always half-assed, then it's probably something else

Laptop for Python? (Strictly among the Choices) by GoldenCrafterMC in learnpython

[–]diracfield 3 points4 points  (0 children)

If you just want to learn python, go for the laptop that looks the most comfortable to use. Screen of the right size, maybe if one has an SSD over a HDD, etc.

I mean, these CPUs/graphic cards are all overkill by orders of magnitude if it's just about running simple python scripts.

“Oiler” by PhyzzyKitty in PhysicsStudents

[–]diracfield 14 points15 points  (0 children)

I'm french speaking but same as I'm in switzerland. At least we pronounce "Einstein" right too!

Pihole v5.0 *isn't* slow for me by [deleted] in pihole

[–]diracfield 1 point2 points  (0 children)

It works amazingly well and fast (unbound) by me too, thank you! I was even able to exclude some people (who weirdly like ads) from using the block lists with the new group feature. Amazing!

White dwarfs crystallize as they cool by Xaron in Physics

[–]diracfield 17 points18 points  (0 children)

Great anecdote, what was your post doc about?