All Questions
9 questions
1
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0
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76
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Is MATLAB feasible for app deployment versus lower level languages [duplicate]
MATLAB/Octave is a pretty useful language for prototyping scientific computation use cases, however I would like to know if the sheer nature of being a high level language bottlenecks how fast the ...
- 111
5
votes
3
answers
1k
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What do C, C++ and Java have that Fortran 2003 don't? [closed]
As you may know, Fortran is widely and longly (?) used in science. I've heard a lot of people saying that we natural scientists should all migrate to C++ or Java. I've seen people increasingly ...
- 207
8
votes
2
answers
1k
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Library with polylogarithm function [duplicate]
I am looking for a reliable library where I can find polylogarithm function and newton/secant method for solving non-linear equations. Basically I have something like this:
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- 181
3
votes
4
answers
3k
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Use of Java or Scala in HPC?
I was looking to brush up and/or pick up some languages for a hobby project on my free Amazon EC2, and I was going through the benchmark results for Java vs C (or Scala vs C)and Fortran vs C. It seems ...
- 139
6
votes
5
answers
305
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Evaluate the sum
I want to evaluate the sum $$\sum_{k=1}^\infty \left(\frac{i+1}{\sqrt{2}}\right)^k\cdot k^{-\alpha}$$ where $i=\sqrt{-1}$ and $\alpha\in[\frac{3}{4},1]$ with 8 digits accuracy.
If I am willing to ...
- 61
9
votes
3
answers
5k
views
How do I know if my code is being vectorized by the compiler?
As exemplified by Jed Brown's answer to Costs of lookups versus calculations, using vectorized vs non-vectorized floating point operations results in much faster code. Many modern compilers claim ...
- 2,086
14
votes
4
answers
2k
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Is C slower than Fortran on the spectral norm shootout (using gcc, intel and other compilers)?
The conclusion here:
How much better are Fortran compilers really?
is that gfortran and gcc are as fast for simple code. So I wanted try something more complicated. I took the spectral norm shootout ...
- 2,930
14
votes
1
answer
392
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Is there a tool out there that can generate interval extensions of Fortran (or C) functions by parsing Fortran (or C) code?
Case studies in my PhD thesis require that I have interval extensions of Fortran subroutines in CHEMKIN-II (apologies for the link; it's the best one I could find for a package no longer distributed ...
- 30.4k
78
votes
5
answers
21k
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How much better are Fortran compilers really?
This question is an extension of two discussions that came up recently in the replies to "C++ vs Fortran for HPC". And it is a bit more of a challenge than a question...
One of the most often-heard ...
- 9,563