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COMP-FORTRAN-90  August 2018

COMP-FORTRAN-90 August 2018

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Subject:

Re: Webinar - Verification and Modernisation of Fortran Codes using the NAG Fortran

From:

Van Snyder <[log in to unmask]>

Reply-To:

Fortran 90 List <[log in to unmask]>

Date:

Wed, 29 Aug 2018 09:34:24 -0700

Content-Type:

text/plain

Parts/Attachments:

Parts/Attachments

text/plain (127 lines)

On Wed, 2018-08-29 at 09:11 +0000, Wadud Miah wrote:
> Hi,
> 
> Not sure if you are aware, but there is a tool that does what you are
> looking for:
> 
> https://github.com/camfort/camfort
> 
> I think it's unlikely that dimensional checking will be incorporated
> into the language. 

I know camfort and Andy Rice.  It's based upon my proposal to
incorporate units of measurement into Fortran.  It does some, but not
all, of what is needed.  One part that's missing is I/O.

> 
> Regards,
> Wadud.
> 
> -----Original Message-----
> From: Fortran 90 List <[log in to unmask]> On Behalf Of
> Van Snyder
> Sent: 24 August 2018 19:06
> To: [log in to unmask]
> Subject: Re: Webinar - Verification and Modernisation of Fortran Codes
> using the NAG Fortran
> 
> On Fri, 2018-08-24 at 11:58 +0000, Wadud Miah wrote:
> > Thu, Sep 13, 2018 3:00 PM - 3:40 PM BST
> > 
> > Verification and Modernisation of Fortran Codes using the NAG
> Fortran
> > Compiler
> > 
> > 
> > 
> > Fortran remains the dominant programming language of scientific
> > computation and HPC, and is likely to be for the foreseeable future.
> > Advances in compiler technology and techniques have yielded huge
> > performance gains for Fortran codes. However, there is very little
> > emphasis on correctness and language standards compliance. The NAG
> > Fortran Compiler was designed with a strong emphasis on correctness
> > and adherence to the language standard, as well as providing
> > additional features for modernising legacy codes. This webinar will
> > show how the NAG Fortran Compiler can be used to write correct and
> > performance portable code which is not always possible with other
> > compilers. By strictly adhering to the language standard, this makes
> > the code portable to other compilers.
> 
> An important problem is correct use of units of measurement. I
> proposed
> a facility to specify and check units of measurement of variables in
> 2004, but it was not adopted. Resistance to the proposal has increased
> continuously since that time, for reasons nobody will state. I was
> ultimately denied permission to publish the proposal as a non-binding
> ISO Technical Specification.
> 
> Programming by contract is helpful, but it cannot help if there is
> nothing to assert. For example, if the units of a dummy argument are
> supposed to be kilometers but the units of the actual argument are
> meters (or feet), the processor cannot detect this.
> 
> People have claimed this can be done using derived types, but nobody
> does so because of the labor cost and performance degradation.
> 
> > https://register.gotowebinar.com/register/8965699678814196482
> > 
> > 
> > 
> > -----------------------------------
> > 
> > Dr. Wadud Miah
> > 
> > Numerical Algorithms Group
> > 
> > 
> > 
> > 
> > 
> > 
> > 
> > 
> > Disclaimer
> > 
> > The Numerical Algorithms Group Ltd is a company registered in
> England
> > and Wales with company number 1249803. The registered office is:
> > Wilkinson House, Jordan Hill Road, Oxford OX2 8DR, United Kingdom.
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> >
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