On Wed, Oct 31, 2012 at 12:47 PM, Ralph Castain <rhc@open-mpi.org> wrote:

On Oct 31, 2012, at 12:36 PM, Paul Hargrove <phhargrove@lbl.gov> wrote:

Ralph,

I don't think I missed the point about the origin of the concern - we just have different view points.

Jeff indicated that he previously thought the "odd" practice shown in the example was uncommon until he learned is was common in codes at Sandia. Perhaps you and I have interpreted the "impact" differently:

+ From your responses I gather you are concerned only (or primarily) w/ folks at Sandia who work on codes that have the "odd" behavior.

Sigh...no, that isn't accurate. I was only trying to say that the concern was raised from that corner for those reasons. And I don't think they would consider a code that meets standards as being "odd".

Sorry if I mischaracterized you view - I chose the phrase "I gather" with the intent of expressing MY understanding/interpretation of your postings. I guess I MISunderstood/MISinterpreted.

I chose "odd" for lack of a better term to describe code using a char* for an array of ints.

I fully agree that the code is standards-compliant - otherwise I'd not care one iota about warnings or no warnings.

+ On the other hand, I took the Sandia codes as an "existence proof" showing that "really smart people" can still write questionable code at times. So, I think there could be a non-trivial number of codes developed outside of Sandia that would start generating warnings (possibly MANY of them).

Could be - but again, not many are likely to be using clang, and so they won't be affected by this change.

I will now crawl back under my rock - I honestly couldn't care less about this, but was trying to explain the concern voiced on the telecon as that person is way too busy for this debate.

[snip - find the full thread in the archives]

I am crawling back under my rock too, due to a similar lack of true concern over the outcome.

-Paul [who's only ever used MPI_BYTE]

Paul H. Hargrove PHHargrove@lbl.gov

Future Technologies Group

Computer and Data Sciences Department Tel: +1-510-495-2352

Lawrence Berkeley National Laboratory Fax: +1-510-486-6900