[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: compare the executive speed with Matlab
From: |
Sergei Steshenko |
Subject: |
Re: compare the executive speed with Matlab |
Date: |
Fri, 2 Jan 2009 15:15:45 -0800 (PST) |
--- On Fri, 1/2/09, John W. Eaton <address@hidden> wrote:
> From: John W. Eaton <address@hidden>
> Subject: Re: compare the executive speed with Matlab
> To: "wim van hoydonck" <address@hidden>
> Cc: address@hidden, address@hidden, "Howard" <address@hidden>
> Date: Friday, January 2, 2009, 2:45 PM
> On 2-Jan-2009, wim van hoydonck wrote:
>
> | To conclude, on my computer, for this test, Octave is
> approximately
> | as fast as C, gfortran is a little bit faster and ifort
> is 10 times as fast.
> |
> | If you want to speed up your code, write the critical
> parts in Fortran, not C.
>
> I don't think that conclusion is justified, but
> whatever. Clearly it
> is not the language alone, or gfortran would also be 10
> times
> faster...
>
> In any case, I'm surprised by the 10 times factor. So
> how about
> comparing the assembly code that is generated. What is
> ifort doing
> that the others are missing?
>
> jwe
Also, Intel compilers might be using IPPs - Intel Performance Primitives.
FWIW, there is a similar library from AMD, and the license might be more
liberal.
Regards,
Sergei.
- Re: compare the executive speed with Matlab, (continued)
- Re: compare the executive speed with Matlab, Jordi GutiƩrrez Hermoso, 2009/01/02
- Re: compare the executive speed with Matlab, Sergei Steshenko, 2009/01/02
- Re: compare the executive speed with Matlab, John W. Eaton, 2009/01/02
- Re: compare the executive speed with Matlab, Jordi GutiƩrrez Hermoso, 2009/01/02
- Re: compare the executive speed with Matlab, Sergei Steshenko, 2009/01/02
- Re: compare the executive speed with Matlab, John W. Eaton, 2009/01/02
- Re: compare the executive speed with Matlab, Sergei Steshenko, 2009/01/02
- Re: compare the executive speed with Matlab, wim van hoydonck, 2009/01/02
- Re: compare the executive speed with Matlab, John W. Eaton, 2009/01/02
- Re: compare the executive speed with Matlab, Sergei Steshenko, 2009/01/02
- Re: compare the executive speed with Matlab,
Sergei Steshenko <=
- Re: compare the executive speed with Matlab, Sergei Steshenko, 2009/01/02
- Re: compare the executive speed with Matlab, Sergei Steshenko, 2009/01/02
- Re: compare the executive speed with Matlab, Sergei Steshenko, 2009/01/02
- Re: compare the executive speed with Matlab, wim van hoydonck, 2009/01/05
- Re: compare the executive speed with Matlab, John W. Eaton, 2009/01/02
Re: compare the executive speed with Matlab, Howard, 2009/01/03