MATLAB is running really slow.

2014 4 13
2 个回答
更新时间：2014 4 18
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Hello everyone my MATLAB is running really really slow. I have a late 2011 Macbook Pro 13' with OSX 10.9.2 with MATLAB R2012a. Every time I try to run a script I get the little blue ball and after a couple of seconds my laptop fan starts to hum like it's really struggling with trying to process the command. Any suggestions on how to fix and/or improve this problem.

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per isakson
per isakson 2014-4-17
  • "a script" is that a specific script?
  • "hum" is that fan or disk?
Luis
Luis 2014-4-17
A script: like any particular code that I write it takes quite awhile for it to be executed and sometimes it doesn't execute when the code is quite large and I have to force quit MATLAB and try to execute it again.
hum: like from the fan on the laptop like when it's overheating.
per isakson
per isakson 2014-4-17
编辑：per isakson 2014-4-17
Thus "really really slow" applies to running your scripts. (The bench result isn't that bad.)
"really really slow" compared to what? Are your expectations realistic?
Did you try to analyze the execution with the function, profile ? Maybe your script can be modified to run much faster.
Luis
Luis 2014-4-18
yes to the scripts they use to take about no more then a second or so like the results and/or a graph would just pop up and now its like it stalls take seconds to calculate and sometimes it doesn't complete the task and oh I thought that the results from the bench that I should be up higher on the graph. and no I have not tried to analyze the execution with the function profile I'll see what that tells me
per isakson
per isakson 2014-4-18
Since I know nothing about your scripts I cannot guess what the problem is.
profile will hopefully spot the lines of code which takes so long.

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回答（2 个）

per isakson
per isakson 2014-4-13

0 个投票

Did you run
bench
? How does it rank your system?
Do you have memory enough for your test?

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Luis
Luis 2014-4-14
编辑：Luis 2014-4-14
no I had not and I got this EDU>> bench
ans =
0.1898 0.1645 0.1604 0.2052 0.9029 1.2197
and I have about 346 GB of space on my laptop and all of my files are an external drive.
José-Luis
José-Luis 2014-4-14
Please put your files in a local folder and try again. IO might be a bottleneck.
Luis
Luis 2014-4-14
Sorry I meant that all of my codes that I'm running are on an external drive
José-Luis
José-Luis 2014-4-14
Yes, please try putting them in your hard drive and run from there.
Luis
Luis 2014-4-14
Oh ok I thought that it would be best to keep them off the laptop to not affect the speed
per isakson
per isakson 2014-4-17
The bench result looks plausible to me.
Luis
Luis 2014-4-17
could you elaborate?
per isakson
per isakson 2014-4-18
I know little about MacBook. I googled. Speed a third of that of the top machine seems plausible.
However, the bench result has nothing to do with the problem you encounter.

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Wonsang You
Wonsang You 2014-4-17

0 个投票

If you had a parallel computing toolbox as well as its compatible hardware (either CPUs or GPUs), you could be helpful to accelerate the speed.

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Luis
Luis
2014-4-13

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per isakson
per isakson
2014-4-18

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