Thread Subject: Installing Matlab on a new PC, 64 bit or 32bit?

New Dell PC, Intel Quad Core 2.66GHz, 4GB RAM memory,

Shall I install the 64 bit version of Matlab , or the 32bit version?

Suppose my ultimate goal is the computational speed...?

Do I have to get another 4GB RAM to maximize its performance?

Thanks!

Luna Moon <lunamoonmoon@gmail.com> wrote in message <eddc3833-bb12-4e65-ab9a-441d974245ff@k19g2000prh.googlegroups.com>...
> New Dell PC, Intel Quad Core 2.66GHz, 4GB RAM memory,
>
> Shall I install the 64 bit version of Matlab , or the 32bit version?
>
> Suppose my ultimate goal is the computational speed...?
>
> Do I have to get another 4GB RAM to maximize its performance?
>

It depends on your application. If you need to create large matrix, then it is better to use 64 bit. Otherwise 32 bit is OK.

Don't forget you might get a headeach trying to setup a correct configuration for compiling 64 bits mex or mcc.

Bruno

On Feb 28, 1:44=A0am, "Bruno Luong" <b.lu...@fogale.findmycountry>
wrote:
> Luna Moon <lunamoonm...@gmail.com> wrote in message <eddc3833-bb12-4e65-a=
b9a-441d97424...@k19g2000prh.googlegroups.com>...
> > New Dell PC, Intel Quad Core 2.66GHz, 4GB RAM memory,
>
> > Shall I install the 64 bit version of Matlab , or the 32bit version?
>
> > Suppose my ultimate goal is the computational speed...?
>
> > Do I have to get another 4GB RAM to maximize its performance?
>
> It depends on your application. If you need to create large matrix, then =
it is better to use 64 bit. Otherwise 32 bit is OK.
>
> Don't forget you might get a headeach trying to setup a correct configura=
tion for compiling 64 bits mex or mcc.
>
> Bruno

Really? What troubles will I encounter when building 64 bit mex or mcc
on Windows?

Thanks so much for your reminder. I realize that there are a few 3rd
party software package that I use along with Matlab,

I have to probably stay with 32 bit version, I guess.

On Feb 28, 1:44=A0am, "Bruno Luong" <b.lu...@fogale.findmycountry>
wrote:
> Luna Moon <lunamoonm...@gmail.com> wrote in message <eddc3833-bb12-4e65-a=
b9a-441d97424...@k19g2000prh.googlegroups.com>...
> > New Dell PC, Intel Quad Core 2.66GHz, 4GB RAM memory,
>
> > Shall I install the 64 bit version of Matlab , or the 32bit version?
>
> > Suppose my ultimate goal is the computational speed...?
>
> > Do I have to get another 4GB RAM to maximize its performance?
>
> It depends on your application. If you need to create large matrix, then =
it is better to use 64 bit. Otherwise 32 bit is OK.
>
> Don't forget you might get a headeach trying to setup a correct configura=
tion for compiling 64 bits mex or mcc.
>
> Bruno

I have a bunch of homemade mex files, which I previously made using VC+
+ under 32 bit,

will they run from within the 64bit Matlab that I am installing?

On Feb 28, 7:12=A0am, LunaMoon <lunamoonm...@gmail.com> wrote:
> On Feb 28, 1:44=A0am, "Bruno Luong" <b.lu...@fogale.findmycountry>
> wrote:
>
> > Luna Moon <lunamoonm...@gmail.com> wrote in message <eddc3833-bb12-4e65=
-ab9a-441d97424...@k19g2000prh.googlegroups.com>...
> > > New Dell PC, Intel Quad Core 2.66GHz, 4GB RAM memory,
>
> > > Shall I install the 64 bit version of Matlab , or the 32bit version?
>
> > > Suppose my ultimate goal is the computational speed...?
>
> > > Do I have to get another 4GB RAM to maximize its performance?
>
> > It depends on your application. If you need to create large matrix, the=
n it is better to use 64 bit. Otherwise 32 bit is OK.
>
> > Don't forget you might get a headeach trying to setup a correct configu=
ration for compiling 64 bits mex or mcc.
>
> > Bruno
>
> I have a bunch of homemade mex files, which I previously made using VC+
> + under 32 bit,
>
> will they run from within the 64bit Matlab that I am installing?

Which version is faster?

LunaMoon <lunamoonmoon@gmail.com> wrote in message <72b40e48-bdcb-4985-a791-60110b51520e@e36g2000prg.googlegroups.com>...
> On Feb 28, 1:44=A0am, "Bruno Luong" <b.lu...@fogale.findmycountry>
> wrote:
> > Luna Moon <lunamoonm...@gmail.com> wrote in message <eddc3833-bb12-4e65-a=
> b9a-441d97424...@k19g2000prh.googlegroups.com>...
> > > New Dell PC, Intel Quad Core 2.66GHz, 4GB RAM memory,

> I have a bunch of homemade mex files, which I previously made using VC+
> + under 32 bit,
>
> will they run from within the 64bit Matlab that I am installing?

No. And Matlab does not provide 64 bit C compiler.

You have to dig to third party compilers, some of them (Microsoft to avoid citing any company name) requires a huge SDK package, etc...

Some of the complex code might be a pain to convert to 64 bits. I still have few of them that I have not time to convert yet, though I have a 64-bit machine since 6 months.

 Bruno

On Feb 28, 7:36=A0am, "Bruno Luong" <b.lu...@fogale.findmycountry>
wrote:
> LunaMoon <lunamoonm...@gmail.com> wrote in message <72b40e48-bdcb-4985-a7=
91-60110b515...@e36g2000prg.googlegroups.com>...
> > On Feb 28, 1:44=3DA0am, "Bruno Luong" <b.lu...@fogale.findmycountry>
> > wrote:
> > > Luna Moon <lunamoonm...@gmail.com> wrote in message <eddc3833-bb12-4e=
65-a=3D
> > b9a-441d97424...@k19g2000prh.googlegroups.com>...
> > > > New Dell PC, Intel Quad Core 2.66GHz, 4GB RAM memory,
> > I have a bunch of homemade mex files, which I previously made using VC+
> > + under 32bit,
>
> > will they run from within the 64bitMatlabthat I am installing?
>
> No. AndMatlabdoes not provide64bitC compiler.
>
> You have to dig to third party compilers, some of them (Microsoft to avoi=
d citing any company name) requires a huge SDK package, etc...
>
> Some of the complex code might be a pain to convert to64bits. I still hav=
e few of them that I have not time to convert yet, though I have a64-bitmac=
hine since 6 months.
>
> =A0Bruno

Wierd, I installed the Matlab,

the whole process Matlab didn't ask me to choose between 64 bit and 32
bit versions...

On Feb 28, 7:36=A0am, "Bruno Luong" <b.lu...@fogale.findmycountry>
wrote:
> LunaMoon <lunamoonm...@gmail.com> wrote in message <72b40e48-bdcb-4985-a7=
91-60110b515...@e36g2000prg.googlegroups.com>...
> > On Feb 28, 1:44=3DA0am, "Bruno Luong" <b.lu...@fogale.findmycountry>
> > wrote:
> > > Luna Moon <lunamoonm...@gmail.com> wrote in message <eddc3833-bb12-4e=
65-a=3D
> > b9a-441d97424...@k19g2000prh.googlegroups.com>...
> > > > New Dell PC, Intel Quad Core 2.66GHz, 4GB RAM memory,
> > I have a bunch of homemade mex files, which I previously made using VC+
> > + under 32bit,
>
> > will they run from within the 64bitMatlabthat I am installing?
>
> No. AndMatlabdoes not provide64bitC compiler.
>
> You have to dig to third party compilers, some of them (Microsoft to avoi=
d citing any company name) requires a huge SDK package, etc...
>
> Some of the complex code might be a pain to convert to64bits. I still hav=
e few of them that I have not time to convert yet, though I have a64-bitmac=
hine since 6 months.
>
> =A0Bruno



So are you saying that you are using a 64 bit version Matlab but you
call mex files which were previously compiled to be 32 bit, and
everything is okay?

That's actually good:

When 64bit is available, you use the 64bit portion; if not, (for
example, no time to do the conversion, or too troublesome to convert,
etc.), then the 64 bit Matlab will run the 32bit mex smoothly...

Is that the case?

LunaMoon <lunamoonmoon@gmail.com> wrote in message <8a0ecd17-dda2-4cde-800e-c97a6b1c998b@v5g2000prm.googlegroups.com>...
> On Feb 28, 7:36=A0am, "Bruno Luong" <b.lu...@fogale.findmycountry>
> wrote:
> > LunaMoon <lunamoonm...@gmail.com> wrote in message <72b40e48-bdcb-4985-a7=
> 91-60110b515...@e36g2000prg.googlegroups.com>...
> > > On Feb 28, 1:44=3DA0am, "Bruno Luong" <b.lu...@fogale.findmycountry>
> > > wrote:
> > > > Luna Moon <lunamoonm...@gmail.com> wrote in message <eddc3833-bb12-4e=
> 65-a=3D
> > > b9a-441d97424...@k19g2000prh.googlegroups.com>...
> > > > > New Dell PC, Intel Quad Core 2.66GHz, 4GB RAM memory,
> > > I have a bunch of homemade mex files, which I previously made using VC+
> > > + under 32bit,
> >
> > > will they run from within the 64bitMatlabthat I am installing?
> >
> > No. AndMatlabdoes not provide64bitC compiler.
> >
> > You have to dig to third party compilers, some of them (Microsoft to avoi=
> d citing any company name) requires a huge SDK package, etc...
> >
> > Some of the complex code might be a pain to convert to64bits. I still hav=
> e few of them that I have not time to convert yet, though I have a64-bitmac=
> hine since 6 months.
> >
> > =A0Bruno
>
>
>
> So are you saying that you are using a 64 bit version Matlab but you
> call mex files which were previously compiled to be 32 bit, and
> everything is okay?

No. I actually reply. mex32 cannot run of Matlab 64 bits. Hope it's clear.
>
> That's actually good:
>
> When 64bit is available, you use the 64bit portion; if not, (for
> example, no time to do the conversion, or too troublesome to convert,
> etc.), then the 64 bit Matlab will run the 32bit mex smoothly...
>
> Is that the case?

No and no. mex32 runs on Matlab-32; mex64 runs on Matlab-64. No mixing possible. Hope it's even clearer.

Bruno

1.How do I install matlab 2008b on new laptop with windows7 as 32 bit?
2.How do I convert mexw32 to mexw64?

Thanks for your help
Thanh

"Bruno Luong" <b.luong@fogale.findmycountry> wrote in message <gob111$hht$1@fred.mathworks.com>...
> Luna Moon <lunamoonmoon@gmail.com> wrote in message <eddc3833-bb12-4e65-ab9a-441d974245ff@k19g2000prh.googlegroups.com>...
> > New Dell PC, Intel Quad Core 2.66GHz, 4GB RAM memory,
> >
> > Shall I install the 64 bit version of Matlab , or the 32bit version?
> >
> > Suppose my ultimate goal is the computational speed...?
> >
> > Do I have to get another 4GB RAM to maximize its performance?
> >
>
> It depends on your application. If you need to create large matrix, then it is better to use 64 bit. Otherwise 32 bit is OK.
>
> Don't forget you might get a headeach trying to setup a correct configuration for compiling 64 bits mex or mcc.
>
> Bruno

How do I install matlab 2008b as 32bit on new vaio laptop with preinstall windows 7 .
I think that it did not ask me if I want to install as 32 bit or 64 bit. It just install as 64 bit.
Should I uninstall it, and reinstall it as 32 bit, and how?
I play with ECRobot NXT for mindstorms, with a lot of mexw32. Now it ‘s not work anymore.