Can you have both 32 bit and 64 bit MATLAB installed?

Question

Adrianna 2011-4-29

1
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/6485-can-you-have-both-32-bit-and-64-bit-matlab-installed

Hi,

I would like to have both 32 bit and 64 bit MATLAB installed on my Windows machine.

Some of my code require mex and I only have a 32 bit Fortran compiler hence the need to have 32 bit MATLAB. However, my machine has 12 gb of RAM and I would like to utilize it for my other code.

Is it possible to have both installed on my machine?

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Kaustubha Govind 2011-4-29

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/6485-can-you-have-both-32-bit-and-64-bit-matlab-installed#answer_8971

Yes, it is possible to have both 32- and 64-bit MATLAB installed on the same Windows machine.

3 个评论
显示 1更早的评论隐藏 1更早的评论

Arnaud Miege 2011-5-16

Walter is correct. Remember to run mex -setup every time you switch from one to the other.

Jan 2012-2-29

I had to install the 32 bit Matlab folder in a path, which does not contain parentheses - on Windows 7 the standard folder "C\Program Files (86)" caused problems. I have a folder "C:\ProgramFiles" for such cases, which does not have a spcae inside also.

I solve the Mex setup problem using a function CompileMex instead, which checks the environment dynamically and sets the the mexopts file manually, e.g. "-f mexopts_MSVC2010_32.bat". I create these option files by "mex -setup" at first and rename the file accordingly afterwards.

请先登录，再进行评论。

Answer 2

Han Geerligs 2012-2-29

3
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/6485-can-you-have-both-32-bit-and-64-bit-matlab-installed#answer_39101

在 MATLAB Online 中打开

Hi all,

I just received a solution from TMW:

A workaround would be to create a startup.m file in which you set the compiler automatically. The code in that startup.m file can look like this:

if strcmp(mexext,'mexw64')
   mex('-setup:msvc100free');
else
  mex('-setup:lcc');
end

In that way, at MATLAB startup it is checked if it’s the 32bit MATLAB or 64bit MATLAB and the compiler is selected automatically in the background. So no user interaction is needed.

In addition, I will create an enhancement request for that feature.