您正在关注此问题

您将在关注的内容源中看到更新。
您可能会收到电子邮件，具体取决于您的通信预设项。

Matla quite slow while display 1024x1024 matrix

2 次查看（过去 30 天）

显示更早的评论

Frederic Cleva 2021-2-24

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/754579-matla-quite-slow-while-display-1024x1024-matrix

⋮

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/754579-matla-quite-slow-while-display-1024x1024-matrix

编辑： Frederic Cleva 2021-3-3

在 MATLAB Online 中打开

Good morning,

I face an issue while displaying simple matrix using such a script:

N=4096; a=ones(N,N);
figure(); mesh(a)

Matlab take minutes to display the surface and once dislayed it takes some more minutes to get out a frozen state.

I am not an expert at all but it seems to me it can be connected to the Graphical processor.

mine is NVIDI Quadro P1000, I don"t know whether this is a well sized one.

Many thanks for your feedback

Frederic

13 个评论
显示 11更早的评论隐藏 11更早的评论

Rik 2021-2-24

此评论的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/754579-matla-quite-slow-while-display-1024x1024-matrix#comment_1350939

⋮

链接

此评论的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/754579-matla-quite-slow-while-display-1024x1024-matrix#comment_1350939

When I try this, I mainly see my CPU doing something.

You should note that the array you create is 4096x4096, not 1024x1024.

Frederic Cleva 2021-2-24

此评论的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/754579-matla-quite-slow-while-display-1024x1024-matrix#comment_1352014

⋮

链接

此评论的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/754579-matla-quite-slow-while-display-1024x1024-matrix#comment_1352014

Many thanks for the fast feedback Rick,

4096x4096, yes indeed, did I suggest that it was a 1024x1024 one?

I check the information given through the task managr and it says that the processor is occupied at 15% and memory requires 5 Go while the GPU is not that active. You are right.

I thought it could be related to graphical issue because any trial to move the 3D surface within the plot takes more than few minutes...

Did you get the same feature? Or does the 3D image gently follow when you drag with your mouse?

Thanks again for the help

Frederic

Walter Roberson 2021-2-24

此评论的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/754579-matla-quite-slow-while-display-1024x1024-matrix#comment_1352094

⋮

链接

此评论的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/754579-matla-quite-slow-while-display-1024x1024-matrix#comment_1352094

"Matla quite slow while display 1024x1024 matrix" was your title

Frederic Cleva 2021-2-24

此评论的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/754579-matla-quite-slow-while-display-1024x1024-matrix#comment_1352169

⋮

链接

此评论的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/754579-matla-quite-slow-while-display-1024x1024-matrix#comment_1352169

(oh I see... btw it is slow also with 1024x1024)

Walter Roberson 2021-2-24

此评论的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/754579-matla-quite-slow-while-display-1024x1024-matrix#comment_1352244

⋮

链接

此评论的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/754579-matla-quite-slow-while-display-1024x1024-matrix#comment_1352244

For me the 4K mesh takes a small number of seconds to bring up (roughly 8 seconds.) . Spinning it is a bit laggy but not so bad.

Frederic Cleva 2021-2-25

此评论的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/754579-matla-quite-slow-while-display-1024x1024-matrix#comment_1353359

⋮

链接

此评论的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/754579-matla-quite-slow-while-display-1024x1024-matrix#comment_1353359

Many thanks Walter,

is your computer something specifically boosted?

my laptop is a DELL recision 5530 with Intel Core i7-8850H CPU@ 2.6GHz / 16 Go RAM and two Graphics cards "NVIDIA Quadro P1000 " and Interl UHD Graphics 630. At least this is what mentionned from the peripheric manager.

I guess those values are not that bad

Frederic

Walter Roberson 2021-2-25

此评论的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/754579-matla-quite-slow-while-display-1024x1024-matrix#comment_1353434

⋮

链接

此评论的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/754579-matla-quite-slow-while-display-1024x1024-matrix#comment_1353434

No, my computer is a 2012 iMac

Frederic Cleva 2021-2-25

此评论的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/754579-matla-quite-slow-while-display-1024x1024-matrix#comment_1353494

⋮

链接

此评论的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/754579-matla-quite-slow-while-display-1024x1024-matrix#comment_1353494

Hum...

I run it on the laptop of a colleague with the same disapointing results. (for 4096^2 matrix)

Frederic Cleva 2021-3-1

此评论的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/754579-matla-quite-slow-while-display-1024x1024-matrix#comment_1360979

⋮

链接

此评论的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/754579-matla-quite-slow-while-display-1024x1024-matrix#comment_1360979

Hi everyone,

Some tracks:

when I run my script (4096x4096 matrix display) with matlab 2012 it takes only 10sec when I run whith older relaease (2018) it takes ages (minutes...).

Walter, do you run matlab 2012? or some not recent version?

In this specific case it seems worth to make the calculation with maltalb and ask another application fr the display

Many thanks

Frederic

Bjorn Gustavsson 2021-3-1

此评论的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/754579-matla-quite-slow-while-display-1024x1024-matrix#comment_1361009

⋮

链接

此评论的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/754579-matla-quite-slow-while-display-1024x1024-matrix#comment_1361009

In my experience matlab becomes very slow when tasked to plot large number of lines. That might also affect mesh. Could you aviod this irritation by using imagesc, surf or some other plotting-function?

Frederic Cleva 2021-3-1