Questions tagged [system-performance]
The system-performance tag has no usage guidance.
12
votes
2answers
182 views
Listable built-in functions - Why are they so fast on numerical vectors?
Consider the following small example, where I calculate Exp on a large vector by employing the listability which many mathematical built-in functions have:
...
1
vote
0answers
21 views
keep variables in the correct position when TensorExpand
I would like to expand a tensor expression of 3-d vectors. However, the code runs really slow, the problem is asked here:
Why is TensorExpand so slow for vector operations?
However, I found that by ...
3
votes
2answers
116 views
Why is TensorExpand so slow for vector operations?
I would like to expand the following tensor expression:
...
2
votes
1answer
51 views
Optimisation of a loop
I've opened a question here, which was answered. The code works totally fine for a small set of data. However, for a large set and over many iterations, it will take a long time (in order of 24 hours)....
4
votes
1answer
61 views
Hanging in the front end
I'm writing some code and it's getting quite long, and I seem to get a lot of hanging in the front end when I'm trying to move the cursor to certain places with the mouse. I'm starting to think that ...
0
votes
1answer
92 views
How to permanently modify the $Path in Mathematica [duplicate]
I was trying to add permanently a path inside $Path.
"/Users/gkdgoutam/Softwares/HEP_Softwares/MT-1.0"
Following $Path manual I did the following
...
6
votes
1answer
142 views
Code in separate cells causes a kernel crash [duplicate]
Bug introduced in 11.2
If I put the following code in separate cells the Kernel crashes (dies). If I put them together in the same cell it works fine. Version 11.3.0 for Windows.
...
2
votes
2answers
263 views
0
votes
0answers
226 views
Does Mathematica Rely More on CPU or GPU
I am surprised no one asked this before. I am getting a new laptop and I will be mainly using Mathematica more than anything else on it.
When selecting a laptop, should I put more emphasis on CPU or ...
2
votes
0answers
102 views
When does a good graphics card help in Mathematica
I've got an NVIDIA GTX 960 and 32G RAM on my desktop. I was just wondering if it really does any benifit to the usage of Mathematica compared with some integrated card in high-end intel chips.
I ...
0
votes
0answers
30 views
Use a swap file / partition on Raspberry Pi?
Would Mathematica's performance and stability improve if I set up a swap file or partition on my Pi 3?
I'm going to be trying out the Multi-view Reconstruction functionality in Mathematica 11, if ...
1
vote
0answers
75 views
3
votes
1answer
46 views
Question on Global System variables
What are the maximum values for $MaxLicenseProcesses and $MaxLicenseSubprocesses? Can they be infinite or are there specific ...
2
votes
0answers
91 views
Why a simple Plot on Raspberry Pi 3 with Mathematica takes 20 seconds?
I'm with ssh -X raspberrypi logged in. So $DISPLAY points to a X-Server.
I use a very simple script file ...
8
votes
3answers
2k views
Which processor and graphics card to use for my Mathematica license
Does my Mathematica license support processors with 8 cores?
I have to choose between one of the following processors:
Intel® Xeon® E5-1630 v4 Prozessor (4 cores, 3,7 GHz, 4,0 GHz Turbo)
Intel® ...
6
votes
2answers
678 views
How to speed up nested loop? I have used Do loop and Table as well
I am trying to calculate mean for example if list is {1,2,3,4,5}
then i have to calculate mean of ...
4
votes
1answer
449 views
3
votes
0answers
64 views
More efficient ListLinePlots? [duplicate]
I'm generating grids of ListLinePlot objects with hundred thousands of points each, and my notebook gets very slow very fast. IE, I have a hard time scrolling once ...
6
votes
1answer
113 views
Should I rasterize plots to keep my notebook file small?
I often use Mathematica notebooks as an informal "lab notebook", plotting recent results in various tabs and such. I've noticed that these files can tend to get really large; for example, my Windows ...
7
votes
1answer
255 views
Extreme slow down of Manipulate in version 11.1.1 when adding Frame->True
Assigned CASE:3886109
I noticed something very strange in
11.1.1 for Microsoft Windows (64-bit) (April 18, 2017)
When I make simple ...
1
vote
0answers
66 views
Front end is very slow to render after alt-tab
I've installed Mathematica 11.1 on my Arch Linux system, but the GUI is very slow to render in after alt-tabbing away (and is just sluggish in general). Here's a gif which shows what I mean.
I'd be ...
29
votes
1answer
561 views
Benchmarking: unexplained switching between high and low performance
tl;dr I am trying to accurately benchmark some vectorized operations, and compare them between systems. But benchmarking is hard to do well, and I am getting inconsistent results: performance is ...
3
votes
1answer
347 views
Slow front end Mathematica 11.0.1 on linux
Is anyone also experiencing rather slow front end behaviour in Mathematica 11.0.1 on Linux (Deb 8.7 + kde)? I am experiencing quite slower saving times of notebooks themselves and slower response ...
2
votes
1answer
140 views
How to antialias Plot3D graphics?
How can I turn on antialiasing on 3D graphics from Plot3D[]? 2D graphics are antialiased for me but 3D graphics are very aliased and ugly looking, especially the ...
7
votes
1answer
96 views
Front-End hangs up for a while when I type quotation mark " in front of an image
A support case with the identification [CASE:3747200] was created
Thank you for taking the time to send in this report. I understand that when you put a quotation mark in front of an inline image,...
2
votes
2answers
125 views
Why is the execution time getting smaller and smaller every time?
Why is the execution time to compute the value of sum getting smaller and smaller every time in the following code? And how to get consistency? Thank you very much for your help.
...
2
votes
0answers
179 views
Benchmark player pro vs Mathematica
I have a new Computer (Thinkstation: Intel Xeon E5-2630 v3 (2.4 GHz x 16) and want to compare its Performance against two others (Dell: Xeon X5560 2.9GHz x 8, Tri: i7-4790 3.6Ghz x 8). On first two ...
7
votes
1answer
127 views
IntegerReverse much slower than simple alternative
Answered in comments.
I find the built-in function IntegerReverse[n] is roughly an order of magnitude slower than the simple alternative ...
5
votes
0answers
161 views
Mathematica constant CPU usage affecting battery life
I noticed that both the Mathematica front end and kernel are using the CPU constantly. In the end this hurts battery life and is particularly inconvenient when I forget to bring the charger to work .....
3
votes
0answers
123 views
High CPU load for dynamic classification
I encountered some issues with extremely high CPU load when I tried to classify live images (using Dynamic and CurrentImage[]). ...
0
votes
0answers
37 views
What criteria should I follow to choose a Windows version, to run Mathematica 10.0 or higher?
I must install Mathematica 10.4 on a PC, running Windows, specially intended for this job (basically, no other software will be used there).
I'm quite free about choosing the OS (Windows 7, 8, 10, ...
18
votes
4answers
825 views
4
votes
2answers
201 views
Raspberry Pi Temperature and Performance
I just got a raspberry pi 3 and want to get a rough idea of the max temp I might reach while doing intensive calculations. What would you suggest I calculate in mathematica to get the pi hot?
...
3
votes
0answers
78 views
What is the good source to study advanced custom coding in Mathematica [duplicate]
My question is, probably, too general ... I deal a lot with complicated symbolic evaluations, integrations, plotting. I have troubles with optimizing my codes. They come out way too slow. Google and ...
3
votes
0answers
78 views
Possible reduced GUI performance in 10.4
I have observed significantly reduced performance in GUI in Mathematica v10.4. This is especially visible in autocomplete feature delays. This is very evident when I turn some power saving features ...
5
votes
1answer
533 views
Mathematica 10.X benchmark report for high-end surface pro 4/surface book?
Recently, I am seriously considering purchasing the high-end surface device (with intel i7 and maximal RAM). Mathematica will be one of the main applications. Since it is not a full or traditional ...
13
votes
0answers
266 views
Slow JoinAcross performance
Bug introduced in 10.3
I am using JoinAcross to combine two datasets, where the key is an Integer.
...
9
votes
0answers
200 views
What are the time and space complexities of Classify/Predict?
Does anyone have knowledge of the O(n) time & space complexities for various model types supported by Classify[] and ...
43
votes
9answers
3k views
What would you ask Mathematica to do on a big system?
Our hardware supplier has given us the opportunity to test Mathematica on a big Windows system. The specs will be 1 to 4 TB of working memory and 12 sockets with 18 cores each. I got 1 full week of ...
7
votes
1answer
889 views
Mathematica 10.2 is slow to NIntegrate highly oscillatory integrals
I noticed that Mathematica V10.2 is taking much longer to run my code when compared with V9. One function that seems affected is NIntegrate. For example, for a ...
0
votes
0answers
86 views
Different performance in different Linux distributions
On my machine I have both Debian and Ubuntu installed. Because I'm going to move everything to Debian, I just installed Mathematica there.
My concern is about the different results of ...
10
votes
2answers
154 views
Probability: MultivariateHypergeometricDistribution broken with more than five categories?
2016-04-09: This bug is indeed fixed (thank you, Stefan R.!) in 10.4. It may have been fixed in 10.3 or 10.3.1, but I haven't tried these versions.
...
6
votes
1answer
305 views
Is there a way to monitor the memory used by mathematica as a dynamic expression?
I always use the terminal's htop for this, but wouldn't it be nice to visualize per kernel the memory used in a dynamic expression?
11
votes
2answers
175 views
Using Rules inside SequenceCases degrades Performance
Consider the following:
SequenceCases[Range[10^4], {a_?PrimeQ, b_, c_?PrimeQ}]; // AbsoluteTiming
{0.0058148, Null}
If we now try to use a rule to transform ...
36
votes
3answers
14k views
Mathematica vs. Python - how does Mathematica compare to Python's scientific computing suite?
Python's family of packages for scientific computing has matured rapidly. I can pretty much replicate all of Mathematica's functionalities, but with production level and open-source code using the ...
29
votes
1answer
611 views
Why is ListPlot so slow here?
While examining How can I monitor the progress of a Plot? I was surprised to discover that in some cases ListPlot in version 10.0 and 10.1 is orders of magnitude ...
0
votes
1answer
65 views
Returning functions that are partly evaluated
I have some performance issues when calling
Table[{h, Slow1[h, n]}, {n, nlist}, {h, 0.1, 10, 0.5}];
for a given list
...
3
votes
1answer
226 views
Benchmarking in V10.1.0 not showing the correct verision of Mathematica?
Bug introduced in 10.1 and fixed in 10.3
This was done in V10.1.0, but it's showing that as if it was done in V10.0.0?
Computer Specs:(for those who are interested)
...
21
votes
1answer
1k views
Mathematica 10.1.0.0 (OS X) high CPU usage even for empty notebook
Bug fixed in 10.1.0 (see answer for details)
Since update to 10.1.0.0 Mathematica has a high CPU usage even when no evaluation is running (even for empty notebook opened). I am running OS X Yosemite ...
3
votes
0answers
79 views
Where can I find detailed information about the SystemOptions?
I'm looking to optimize my Mathematica script, and I'm willing to go spelunking with low-level system options.
The problem is that I've been looking in the Mathematica documentation, but there doesn'...
