Re: NONMEM compiler
I have not done 32 vs 64 bit comparisons, but on the 32 bit Windows machine, the models with differential equations run much faster (30% or more faster) with Intel than with g77 . This may depend of OC, and I do not have these numbers for Linux
Leonid
--------------------------------------
Leonid Gibiansky, Ph.D.
President, QuantPharm LLC
web: www.quantpharm.com
e-mail: LGibiansky at quantpharm.com
tel: (301) 767 5566
Quoted reply history
On 3/15/2012 6:47 PM, Adams, Jeb wrote:
> My concerns with the Polyhedron website’s numbers are the use of gfortran 4.1.2
> which was published in February of 2007 and gfortran 4.44 [sic] from April 2010
> for the Linux computing environment comparisons. The Intel compiler is always
> from August 2011, which would align it with gfortran 4.6.1.
>
> As noted though, the transition from 32-bit to 64-bit is a much bigger impact
> on runtime than Intel v gfortran.
>
> Jeb Adams, Research Operations Manager
> PKDM IS Liaison
> ~~~~~~~~~~~~~~~~~~
> Amgen, Inc.
>
> From: [email protected] [mailto:[email protected]] On
> Behalf Of Mark Sale - Next Level Solutions
> Sent: Thursday, March 15, 2012 4:31 AM
> To: 'nmusers'
> Subject: RE: [NMusers] NONMEM compiler
>
> Ronald,
> The web site that Oskar posted seems extremely useful, and confirmed the
> rumors that have been around for awhile. But, I'm wondering why anyone would
> use 32 bit, when 64 bit is faster (about 20%) and seems to be better behaved
> numerically?
>
> Mark
>
> Mark Sale MD
> President, Next Level Solutions, LLC
> www.NextLevelSolns.com
> 919-846-9185
> A carbon-neutral company
> See our real time solar energy production at:
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>
> -------- Original Message --------
> Subject: Re: [NMusers] NONMEM compiler
> From: Oskar Clewe<[email protected]>
> Date: Wed, March 14, 2012 10:16 am
> To: "Gieschke, Ronald"<[email protected]>, "'nmusers'"
> <[email protected]>
>
> Dear Ronald
> To my understanding the IVF is considered to be somewhat faster than the gfortran
> compiler in general. But gfortran is on the other hand open source. Regarding
> "quality" I think it is more dependent upon model than compiler. Here are some
> non NONMEM related compiler benchmarks http://www.polyhedron.com/compare0html.
>
> Kind Regards
> Oskar
> -- Oskar Clewe, MSc Pharm PhD Student Pharmacometrics Research Group Department
> of Pharmacutical Biosciences Uppsala University P.O. Box 591 751 24 Uppsala
> SWEDEN [email protected]
>
> On 2012-03-14 13:34, Gieschke, Ronald wrote:
> Dear nmusers,
>
> Do you have any recommendations regarding gfortran and Intel Visual Fortran
> under 32 bit Windows 7? Are runtimes and quality (e.g. covariance step
> successful) comparable?
>
> Many thanks for your response in advance.
>
> v