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12h
comment Raspberry Pi Temperature and Performance
Since you have no particular requirements and so no standard to judge which suggestions are better or worse than any others, why not just do some FFTs or matrix multiplications, or solve some large linear systems? These are classical computationally intensive operations, albeit if you aren't going to use the result for anything, they're just as synthetic as anything else. But I don't know whether these use optimized machine libraries on the Raspberry Pi, which is another reason why I suggested to use the cpuburn code.
12h
comment Raspberry Pi Temperature and Performance
You probably got downvoted because of your imprecise specifications. Mathematica can be used to do any sort of computation you can imagine, and they all have different performance parameters. That's why I suggested you use a synthetic loop to examine the worst case, which is all that really matters, isn't it? Anyway, what sort of application do you have in mind, in order to be able to get some suggestions?
12h
comment Raspberry Pi Temperature and Performance
None. Use this (or something similar) instead.
21h
awarded  Revival
1d
comment Particles bouncing in a 3D box
What's up with the single black particle in the first animation? It seems to be controlled by Maxwell's demon...
1d
comment Particles bouncing in a 3D box
You should use Imgur and not Postimage if you want the animation to work. Postimage serves your animation as HTML (containing a number of "adult themed" adverts) rather than GIF. StackExchange has a contract with Imgur to host all the images on the site and there is a better chance that the posts won't be rendered useless by the images disappearing (or being supplanted by porn ads) if you use them. The image upload thing does suck, but that's life I'm afraid. By the way, thanks for supplying the alt text. So few people bother with it.
1d
revised Particles bouncing in a 3D box
fixing image links
1d
revised How to copy text from InputField without adding spurious spaces?
added 149 characters in body
1d
answered How to copy text from InputField without adding spurious spaces?
1d
revised How to copy text from InputField without adding spurious spaces?
seems fairly obviously a bug in the FE
1d
reviewed Close Problem with stress transformation using InputField
1d
reviewed Close AltGr randomly stops working - Windows 7
2d
comment unordered lists with maximum dispersion
Your question does not make sense in English. It is obvious that you are having difficulty with the language, which is not your fault, but the clarity of the question could probably be better regardless of that. My advice is that, if you write a good, fully specified, understandable, interesting question in Spanish, someone will probably add the correct translation into English.
2d
comment Modeling chemical reactions: can Mathematica tell the end result of a reaction?
It isn't impossible to do it, but to get reliable results in the general case you would need to do some fairly high-level quantum chemical calculations, of the sort that would probably require a compute cluster to finish in a reasonable time. Mathematica isn't really suited to this application. I think you're better off to take the so-called capabilities as suggestions for what you could do, if you really wanted to. It doesn't mean Mathematica will make it easy for you, much less do it without any effort on your part.
Apr
30
comment CompiledFunction::cfsa Argument x at position1 should be a machine-size real number
Basically your problem is that you used Set and SetDelayed oppositely to what will be correct for your example. Interchange them and it will be fine.
Apr
29
comment Why can Mathematica compute numerical sums more efficiently when they are written as matrix operations?
Matrix multiplication using Dot will call BLAS GEMM routines, which use optimized machine instructions and are tuned for memory bandwidth utilization efficiency. A manual loop over the elements at the top level, especially using ParallelSum (which necessitates copying the operands to the subkernels, performing the sum, and then copying the result back to the main kernel), cannot hope to compete with that. You can probably do better with Compile, but you still won't match BLAS.
Apr
28
comment How to convert Image3D object into Graphics3D object and vice versa?
Graphics is vector graphics containing geometric primitives. Image is simply a raster--a grid of pixels. You cannot, in general, recover geometric figures merely from their representation on a grid.
Apr
27
comment How to apply Image3D dynamically
Unfortunately it may be the case that nobody is interested in your problem except for you. If so, it will not help you to post multiple questions on the same topic, as this will only tend to annoy people and get your questions closed as duplicates of each other. I'm reluctant to suggest this, but it does not seem to be a difficult problem; if you need help getting started, you might ask for some hints in the chat. But please remember that nobody has an obligation to answer you.
Apr
26
awarded  Revival
Apr
22
comment How to Import This XYZ format file
It's not okay to just remove the intermediate lines. There are 1000 different structures recorded in the file; drawing these all on top of each other is not what OP wants. Rather, some Manipulate (or something like that) to step through each structure is what is desired. But, OP should be able to sort this out for themselves IMO.