Questions tagged [parallelization]
Questions on parallel computing in Mathematica.
726
questions
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51 views
Error message when calling Parallelize
I have some initialization code that I would like to run on any newly started kernel, and, following this question, my code starts with a call to Parallelize; on ...
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98 views
Speed up performance of nested function computations
I'm trying to create a model for intensive computations for a homomorphic encryption scheme. The core of my problems is a series of function calls
...
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0answers
276 views
Print output of parallel kernels to console
Is it possible to print all the output (inside a Print[] command) of a parallelized computation to the console? I can't find a control for this. I find that my computer can handle printing to the ...
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0answers
226 views
ParallelTable and Table give different results
I am trying to parallelize a table operation, but I find that the table is not the same with and without the parallel function.
I have looked at this question, but I cannot transfer it to my own ...
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0answers
173 views
How can I cleanly distribute definitions of system functions?
I have a package that redefines a system symbol, and I am struggling to find a clean solution that will ensure that those redefinitions will still work inside a parallelized environment.
The core ...
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0answers
50 views
How can I speed up the evaluation of my equations?
Calculation of eigenvalues and eigenvectors in dependence of the parameters
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0answers
25 views
FindMinimumCost Flow and its parallelization
I would like to parallelize a specific implementation of FindMinimumCostFlow but doubt this can be easily done.
Nevertheless, I have tried but failed to find attempts to do so.
If you know of an ...
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0answers
77 views
how to realized parallelization computing on 12 CPUs on linux OS
Mathematica 10.3.0 linux
Question description:
The data I use is a sample of m stocks, each stock has transaction data of n days. The unit of my sample is a 48*1 matrix, which is data for one stock ...
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215 views
What is the correct way to control thread parallelism?
I was trying to benchmark a program I have writing against Mathematica (or better said the internal Kernels used, like MKL).
Since my program is not threaded I wanted to compare with Mathematica 10 ...
0
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1answer
98 views
Improving performance Importing Table
I am currently working on mathematica script on a Raspberry Pi, which will periodically (10 secs) be launched by a bash script. However the runtime of my script really isn't the best.
It's actually ...
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0answers
134 views
How to determine side-effects in parallel computation? Possibly associated to Kernel not closing reliably
I have written a bunch of code to simulate some measurements. To speed things up, I intended to obtain the measurement values via a ParallelTable. However, it turns ...
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0answers
105 views
Concerns about scheduled tasks
I'd like to know how CreateScheduledTask and StartScheduledTask work internally.
When I run the following code:
...
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0answers
75 views
Time needed to solve NIntegrate is much longer than what I was expecting
I'm trying to do the following list:
tablevdip =
ParallelTable[{x, y, Vdip[x, y, 6]}, {x, -1, 1, .5}, {y, -1, 1, .5}];]
with
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0answers
69 views
How to monitor parallel mapping a function over a list? [duplicate]
For instance, how to monitor the progress of ParallelMap[function, list]?
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0answers
102 views
Symbol definition in parallel kernels
Suppose I have a reasonably large number of floating point arrays, obtained from prior numerical simulations. These are stored as binary files named data_#####.dat ...
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113 views
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0answers
30 views
How can I set global computation options ($MaxPiecewiseCases) for parallel kernels? [duplicate]
I'm trying to do a calculation in parallel that requires setting $MaxPiecewiseCases. How can I do this? This small test case doesn't work for me:
...
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0answers
604 views
Cluster integration: Problem connecting to Sun Grid Engine
I'm trying to launch some kernels in a cluster engine running Sun Grid Engine using Cluster integration. But I'm getting the error "Cannot find components required for SGE".
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0answers
185 views
How to parallelize this code
Here I obtained one code which should tests some zeros of the poly for various g, but sometimes I have to many cycles because of step and I need to parallelize the running on all cores. Classical ...
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0answers
63 views
Updating List with Do works but not with ParallelDo [duplicate]
I am trying to find 5 minimas for some function. I can obtain the results if I implement a simple Do function. I tried to speed it up by using ParallelDo and then my code returns spurious results. ...
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0answers
60 views
How to construct a list in a For Loop nested in a Parallel Loop [duplicate]
I've the following problem I cannot solve.
I allocate an empty matrix, v, of size n x m. Then I want to do a Parallel loop (ex. ParallelDo), and do some operations (described by a function operation[...
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1answer
141 views
Problem with List Dimension Outer Map [duplicate]
I am currently handling a big list which has the following dimension: {6, 3, 4, 2, 2, 1, 8} where the last number 8 represent a ...
-1
votes
1answer
210 views
Using different master kernel in the same notebook
In my notebook, I have to call another file, let's say 'program.m' that defines functions, let's say F[] of whom result c I need ...
-1
votes
1answer
186 views
Parallelize in Mathematica [duplicate]
Here is two test to understand the parallelize in Mathematica:
...
-1
votes
2answers
121 views
Using counters within parallelize [closed]
I am running a lengthy do loop and I wish to use Parallelize so that multiple kernels are used. What I do in the loop is update a set of counters that report the ...
-3
votes
1answer
263 views
How to use all the kernels efficiently
We build a project with Java and Mathematica technologies. For this project we have written a bunch of functions in Mathematica and integrated some functions in one ...
