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Results tagged with performance-tuning
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user 5033
Questions on optimizing Mathematica code for higher performance. This may mean faster execution, lower memory usage or both. Not to be confused with mathematical optimization.
11
votes
2
answers
2k
views
Why is ParallelMap way slower than Map
I recently tried to use ParallelMap instead of Map and to my surprise encountered that ParallelMap seems to be slower in general than Map, which does not make sense to me.
Here is a simple test case …
- 2,740
7
votes
1
answer
531
views
MapThread Alternatives
I want to add two matrices, the first one containing a 2D vector at each position the other one a list of 2D vectors. The 2D vector from the first matrix should be added to each of the 2D vectors at t …
- 2,740
6
votes
Accepted
Alternative for MapThread in listable functions
It is actually pretty simple. Just make the outmost function, i.e. flo in your case Listable, which you have already done in your first code snippet:
dem = Compile[{{p1, _Real, 0}}, Min[100 p1, 2500] …
- 2,740
5
votes
1
answer
310
views
MapThread and Compile
After discovering that MapIndexed cannot be used with compile (see MapIndexed and Compile) I am now trying do implement similar functionality using a combination of MapThread and Map. Unfortunately I …
- 2,740
4
votes
1
answer
125
views
Strange behavior of Mathematica regarding calculation time
Today I witnessed the following strange behavior of Mathematica, when it comes to calculation time involving larger nested lists. The following is the short example that I setup, I am sure one can rep …
- 2,740
3
votes
Accepted
Maximising area of intersection of regions
This seems to be an issue with symbolic evaluation. When I run your code in Mathematica 11, I get the following message:
Message[RegionMeasure::nmet,
RegionIntersection[ImplicitRegion[25 < x^ …
- 2,740
3
votes
Integrate over Piecewise function efficiently
First thing I would note is that you should Integrate the function analytically before plotting it. To do so you should add your assumptions like already commented by other users (note that it is impo …
- 2,740