Models, Methods, Software

AOLBGCM validation is an ongoing process.
Can’t ever do too much of it.

I received the following e-mail from Pat Roache regarding his new book about Verification and Validation. He has also made arrangements for reduced prices on two others of his books.

I am pleased to announce the publication of
“Fundamentals of Verification and Validation” by Patrick J. Roache.
Copyright 2009, ISBN 978-0-93478-12-7. 476 pages, subject index.

The book is the successor to my 1998 book “Verification and Validation in Computational Science and Engineering.” About 1/3 of the material is new, including a new Chapter 11 describing the Total Validation Uncertainty approach of ASME ANSI Standard V&V 20 (2009).

The attached file outlines the new features of the book. A complete Table of Contents, including designators for new and modified Sections, will be found on the website.

The price is the same as the 1998 book, U.S. $85.00 (but shipping charges have increased). The book is available directly from our fulfillment house, BookMasters, by email order to

orders@BookMasters.com

or from Amazon.com at the following.
http://www.amazon.com/Fundamentals-Verification-Validation-Patrick-Roache/dp/0913478121/ref=sr_1_7?ie=UTF8&s=books&qid=1253150836&sr=1-7

The orders to BookMasters tend to ship faster since they do not run out of stock. Also, wholesale orders can be placed by contacting BookMasters at orders@BookMasters.com.

I would appreciate it if you would forward this email to any of your colleagues who might be interested.

Thanks for your consideration.

Respectfully,
Patrick Roache

p.s.
If anyone is interested, the 1998 V&V book is on clearance sale for 1/2 price at US $42.50. Available from orders@BookMasters.com or from Amazon at
http://www.amazon.com/Verification-Validation-Computational-Science-Engineering/dp/0913478083/ref=sr_1_4?ie=UTF8&s=books&qid=1253718713&sr=8-4.

Likewise, the book “Fundamentals of Computational Fluid Dynamics” is on clearance sale for 1/2 price at US $37.50. Available from orders@BookMasters.com or from Amazon at
http://www.amazon.com/Fundamentals-Computational-Dynamics-Patrick-Roache/dp/0913478091/ref=sr_1_5?ie=UTF8&s=books&qid=1253718713&sr=8-5

[Updated September 26]
I think the name of the program originally known as the Advanced Strategic Computing Initiative ( ASCI ) is now known as Advanced Simulation & Computing ( ASC ).

[Updated August 26]

I have uploaded an excellent summary, developed by Los Alamos, of the ASC V&V Program at LANL. It is here.

A couple of quotes.

Confidence in simulation extrapolation comes via confidence in physics & numerics models, not calibration to experimental data.

Having “good agreement” between calculations and observations is not sufficient to establish scientifically credible predictive capability.

More and more it seems that the Climate Change Community remains the only holdout among all compute-intensive enterprises relative to application of rigorous, independent V&V to computer software.

Update
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Here and here.

Not my kind of Engineering.

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Well, GISS/NASA employee Dr. Gavin Schmidt has done it again. He has given direct proof that the fundamental concepts of software Verification and Validation and other Software Quality Assurance procedures are not in the work universe of GISS/NASA.

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When the basis of the mathematical models used in AOLGCM models/codes are discussed it is almost always stated that the ‘fundamental laws of conservation and mass and energy’ are at the foundations of the models. This is an incomplete, and somewhat incorrect, statement on several levels.

Conservation of mass and energy is the focus of the following discussion.

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The recent results of an Independent Verification of a calculation at Climate Audit and discussed here brings me to mention the editorial policies of scientific journals relative to Verification, Validation, Software Quality Assurance, and Qualfications of models, methods, software, calculations, users, and applications. I have posted comments about the issues relative to publication of peer-reviewed papers on several blogs and given more detailed discussion here.

According to the results of a very unscientific survey by me, the scientific journals have no interest in these very important issues. Many engineering journals, however, have addressed the problems and developed editorial appropriate policies which must be met by authors.

A little over two years ago I wrote letters to the editors of several scientific journals in which the climate change community publishes papers. I have uploaded an example of the letter.

I think it’s time to followup on that letter, for a second time. Read the rest of this entry »

Here is a start on a bibliography for V&V and SQA books and articles.
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I have a kind of long discussion paper on V&V and SQA that I put together a couple of years ago. I have uploaded a copy V&V and SQA.