Questions tagged [compile]
Questions about the generation and use of compiled functions using Compile.
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Compile error: clang: error: linker command failed with exit code 1
After not using Mathematica 10.0.2.0 for a few months (I think since december 2018) on my MacBook Pro from 2013 (now with macOS Mojave 10.14.5) I am suddenly facing issues with ...
2
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1answer
75 views
How to compile or speed up a function with eigensystem?
I have defined two functions as following:
...
0
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0answers
20 views
Optimizing and Parallel Computing for Large Dyadic Intervals
I need help with the efficiency of my code i.e. less time so I can compute for large range of values.
My function n[x] takes in a number x and outputs the ...
10
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1answer
62 views
WVM hangs or crashes on empty array when compiled Listable
Bug introduced in 12.0 and persisting through 12.0 or later
When I run the following code, the kernel hangs indefinitely:
...
0
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1answer
24 views
Replacement inside NIntegrate
I'm computing rather complicated expressions using NIntegrate, and for that, my integrand is created as some compiled function (to speed up evaluation).
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4
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0answers
119 views
Speed improvements and confusion for MapThread and Dot
I have a question / confusion over improving the speed of MapThread[Dot,...] for lists of tensors. My problem involves taking two lists of tensors and then ...
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21 views
Specify type in output of a compiled function
I want to prepend an array with a position index in the first column using a compiled function.
For some reason, the position index is always returned as a float and not as an integer. How can I ...
2
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1answer
40 views
Gyrating particle transmission through rectangle: NIntegrate or something faster?
I need a function that tells me, what transmission a gyrating particle has through a rectangular aperture if you consider all phase angles. So for a specific guiding center position and gyration ...
0
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0answers
29 views
CompiledFunction::ctfa - Argument should be a rank 4 tensor of machine-size real number
Dear Mathematica community,
I got the following error line:
CompiledFunction::ctfa "Argument {<<1>>} at position 1 should be a rank 4 tensor of machine-size real number"
This is my function:...
1
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1answer
73 views
How to compile properly for performance tuning
I have a question about how to compile functions properly for performance tuning.
Currently, I am trying to solve an eigenvalue problem of a large matrix. Initially I just used the conventional ...
5
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1answer
47 views
RandomPoint returns compiler errors on RegionIntersection of two Meshs?
Consider the intersection of two ConvexHullMesh's, m1 and m2.
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0answers
82 views
How to compile effectively with recent MMA? Global variables in C code, compilation of C code
I have read the generously comprehensive answers by @leonidshifrin and @xzczd to the question How to compile effectively but more than seven years have now passed, and whilst I am sure much remains ...
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70 views
Running a C compiler on Windows Subsystem for LInux [closed]
I want to use the compile-to-C functionality of Mathematica. Has anyone gotten the C compiler driver to recognize a C compiler (for instance gcc) installed on a Windows Subsystem for Linux?
I am ...
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0answers
74 views
Strategies for using mathematica compiled code on a website?
I have developed a chaos detection algorithm which is already used as a compiled (target C) function within Mathematica. The development has been done under Win 10 64-bit with MMA 11.0.1 and the ...
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1answer
178 views
Question on FunctionCompile
So far, I have mixed feelings about the new compiler in Mathematica 12. Sometimes my results are a little bit faster, sometimes they are considerable slower than those obtained with the old compiler ...
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0answers
52 views
How to make a compiled version of a function?
I'm trying to make a compiled version of this function
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2
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2answers
62 views
Changeable global variables in compile statement
If a global variable is changed before each call of the function then answer is not changed accordingly. Please see a toy example:
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0answers
119 views
How to get the executable out of a compiled function and run it in cmd
Can someone please guide how to run the function compiled by Wolfram Language in cmd independent of the kernel. It seems to export it into ...
5
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0answers
110 views
Optimize Use of PeakDetect in Mathematica
I am quite new to Mathematica and I am looking for some advice in order to improve and optimize my code.
Here is what I am trying to do:
Open a stream
Read the stream line by line and store it in "...
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0answers
134 views
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1answer
76 views
How can I use Compile to implement recurrence?
I am trying to make the code for the following recurrence. Here wjoin[[i]] is used for calling values from a data set and a is a ...
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0answers
71 views
What are the recommended best practices for and common pitfalls of using Compile? [duplicate]
As evidenced in my last question there is much I do not know about how to write compilable functions.
The basics are clear: one must load the appropriate packages
...
2
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1answer
97 views
Why won't nominally compilable function compile? (err Compile::cpintlt)
Context: I have millisecond timestamped sample data that I want to convert to a uniformly sampled series. This I do by padding each interval with repeated values (pbp ~ 'pad by position'}.
The ...
2
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1answer
55 views
Return multiple results from compiled function [duplicate]
I wrote a function with Compile that produces a large array of data and later does some computation on it. Now, I want to return from the compiled function not only ...
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80 views
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1answer
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4answers
198 views
Numerical contour plot of compiled function
I have come across a problem in Mathematica when I have tried to plot the contours of a compiled function.
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59 views
Create Compiled Function - Matrix Initialization
I am attempting to compile the following function:
But I receive the following error messages:
How should I initialize the matrix Vw to enable the assignment to Vw[[1,1]]?
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0answers
62 views
Substitute for Association inside Compile?
Associations are not compilable, so I’m looking for a workaround to this. That is, I need a mutable hashtable-like data structure with fast key value lookups ...
1
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1answer
33 views
NIntegrate fails with functions that have (necessarily) numeric lists as arguments
I'm not able to NIntegrate a function that has a numeric list as an argument. My original problem involves a compiled function, but a MWE is the following:
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6
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3answers
125 views
CompiledFunction showing its contents
CompiledFunctions usually appear very compactly, for instance:
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1answer
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1answer
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1answer
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What is the best build-in function to pick or select given element in a huge list
im looking for a best and efficient function works like a search engine
it takes for example m=5+6I ,then it goes searching in the list V={1,1+I,2+3I,...}
until catch it .
My Dr said to use "Select[]"...
2
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1answer
65 views
Recursive function to compiled version
I have looked up some articles about the compiling recursive functions. I know usually there is no general solution to these kinds of questions. And my case is a little bit different (or more ...
6
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1answer
111 views
Creating a multidimensional array with Compile
For one of my programs I need to preallocate a multidimensional list/array. For performance reasons I want to do this within Compile and compile my program to C-...
5
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1answer
147 views
Compile `DeleteCases`
How is the function DeleteCases compilable if Compile does not support patterns?
My question refers to this thread here where I ...
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0answers
57 views
Nested sums in `Compile` [duplicate]
in my code I face the necessity of using nested sums within Compile[].
Unfortunately, nested sums cause a call to MainEvaluate ...
5
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0answers
79 views
Random number generation within Compile and Parallelization->True
According to this thread RandomChoice is a compilable function.
I use it to generate random numbers in a compiled function with parallelization enabled.
I wrote ...
1
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1answer
112 views
How to compile with list?
I try to compile this code, but always failed, could anybody guide me?
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1
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1answer
65 views
Compile errors after reloading of laptop contents after challenging MacOS Mojave installation
I tried (foolhardily, it appears) installing macOS Mojave Version10.4 on my MacBookAir, but encountered major problems--that seemed to have been (finally) fixed after a reinstallation and reloading of ...
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40 views
Compile elementary functions
I am looking to compile some elementary functions to pseudo C-code by using Mathematica's built-in function Compile as efficiently as possible.
I am interested ...
2
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1answer
43 views
Indexed variables in compile
In this contribution Leonid Shifrin says that
You can not really use indexed variables in Compile, although it may appear that you can.
This sounds ambiguous to me. Is it possible or is it not ...
2
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1answer
55 views
Compile command does not succeed with list input with Parallelization->True
J. M. suggested that I pose the following as a question, a matter arising in relation to the function probit:
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0answers
61 views
compiling matrix row assignment
I have this relatively simple code, generated with another Mathematica code (this is just an example): (edit: see below for simpler version)
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3
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1answer
60 views
SystemException[“MemoryAllocationFailure”] with compile and speed issues
I am trying to run a code that gives out a matrix but, I seem to encounter some memory issues while trying to run it. The code is:
...
3
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1answer
38 views
How to avoid “CopyTensor” in compile function with external call: the other case?
I was very interested in the answer of How to avoid “CopyTensor” in compile function with external call? and tried it on my own example below. And it does not work. Just curious why?
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2answers
154 views
How to avoid “CopyTensor” in compile function with external call?
I am writing a complicated compile function. To make it clear, I want to separate it into two smaller compile functions with one calling another. As you can see the example below, the ...
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0answers
45 views
CompiledFunction::cfexe: error without compiled function
I get the error:
CompiledFunction::cfexe: Could not complete external evaluation; proceeding with uncompiled evaluation.
but I am not using any compiled function in my code: how can it be ...
10
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3answers
598 views
Can I use Compile to speed up InverseCDF?
I'm repeatedly issuing the command
P = InverseCDF[NormalDistribution[0, 1], T]
where T is either a 36- or 64-vector of real numbers (points in the unit ...
