Computational Science Stack Exchange
Computational Science Stack Exchange

Questions tagged [software]

Questions about libraries and standalone software designed or well-suited for scientific or numerical calculations.

198 questions
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10 answers

Recommendations and experiences on which license to choose for software?

Developers of software have the choice to choose an appropriate license in accordance with the goal(s) of the work. Can anyone give some recommendations/experiences on which license to pick for software? What are the pros/cons of "giving away" all…
Allan P. Engsig-Karup
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13
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5 answers

On Finding Open Source Projects To Contribute To

This question has been asked a billion times on Stackoverflow however, the focus has always been on Non-Numerical Coding. I am looking for a project to contribute to within the confines of Numerical Computing and High Performance Computing. I would…
Inquest
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11
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1 answer

Does anyone use software estimation methods in their computational science research?

At work, I essentially function as an independent consultant. For management and customers, I need to estimate the amount of time it will take to develop software as part of my computational science research. However, my time estimates are usually…
Geoff Oxberry
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11
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1 answer

How should errors be reported in scientific libraries?

There are many philosophies in different software engineering disciplines about how libraries should cope with errors or other exceptional conditions. A few of the ones I've seen: Return an error code with the result returned by a pointer argument.…
Daniel Shapero
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7
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What is some of the best software design you've seen in a numerical code?

I don't think I've ever seen any scientific computational software that I would consider "good" in terms of software design. I don't mean in terms of functionality, but in terms of good high-level design, coding standards, readability, etc. Most…
Aurelius
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7
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3 answers

FOSS tools for creating high quality physics animations and simulations in 2d and 3d

If I want to create a high quality figure to illustrate a scientific concept or experiment I usually use tikz together with pgfplots or pstricks. However this is for static content. Both tools are extremely powerfull for it's purpose and give high…
Julia
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4
votes
3 answers

Evaluating $\binom{100}{i}a^i(1-a)^{(100-i)}$ in GMP-GNU

I want to calculate $\binom{100}{i}a^i(1-a)^{(100-i)}$ for different $i$ with $a=0.001$ using GMP-GNU. How can this be done?
user12290
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3
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1 answer

How to convert number systems on Sharp calculator if the number has decimal points, for example 3B.254?

I would like convert decimal octal numbers on sharp EL-531TH (or any other) caclulator but when I enable the octal or any other non-decimal function, the decimal key or dot key (marked with red) is disabled. How to do that conversion with a decimal…
Alezigl
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3
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4 answers

Soft question: What are good libraries for solving ordinary differential equations?

I am aware of a few: a) R project b) Intel® Ordinary Differential Equations Solver Library But, I'd like to know which are the best tools that have been developed by professional physicists and mathematicians. The reason I ask is that I'd like to…
Aidan Rocke
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2
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0 answers

How to print out a network in peersim?

Peersim is a peer-to-peer network simulator. I'm simply trying to get the program to print out the network (an edge list is fine). Presumably this is possible, since there is an in-built writeEdgeList function. I suspect there is an easy way to do…
Douglas S. Stones
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1 answer

Not Sure How to Solve A System Of Linear Equations In MAPLE13

How can one solve the following system of linear equations in MAPLE 13?I know how to solve a linear equation with one variable floating around but not this one. $$x-2y+3z=10$$ $$3x-2y+z=2$$ $$4x+5y+2z=29$$ Any help would be greatly…
alok
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Evaluation of feynman diagrams: FORM vs. Sympy vs. other

I just started working on my master thesis in the theoretical particle physics and my supervisor asked me to start working with FORM, a script interpreter with basic knowledge of lorentz and dirac structures implemented, for the evaluation of some…
Philipp
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speckle interferometry (or other interferometry) software

This might not be the best place to ask, and if its not could someone please point me to where would be better, but here we go anyway. Does anyone out there know of open source software which can be used for speckle interferometry with normal…
Nick
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I'm trying to add a colour to the LogicalVolume in Geant4. I get the error that fVisAttributes and visAttributes are undefined. How can I fix this?

I'm trying to add a colour to the LogicalVolume which has been renamed to TrackerLogical in Geant4. I get the error that fVisAttributes and visAttributes are undefined although I have defined them in the #include section as .hh files. The primary…
A.Sa
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1 answer

libgcc_s_sjlj-1.dll is missing

After download from http://sourceforge.net/projects/reduce-algebra/files/ and unzip reduce-windows64-20101007.zip failed to open reduce, got error in window 8 libgcc_s_sjlj-1.dll is missing
Ho Yeung Lee
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