[Pw_forum] invalid flag

[Paolo Giannozzi]

If you enable floating-point exceptions, you will get a bunch of errors
with recent GNU compilers.  I tried some time ago to track down them. All I
found was a few harmless underflows (exponentials of large negative
numbers) that I fixed. Since I didn't find any evidence of serious
problems, nor any clue on the origin of IEEE_DENORMAL messages, I decided
that t wasn't worth to investigate further

Paolo

On Sat, Nov 21, 2015 at 12:07 AM, Hugo Siles <silesalvarado at hotmail.com>
wrote:

> Hello,
>
> I have installed espresso-5.2.1 on fedora 22, with some minor
> difficulties, but it has been installed, I run all the tests, and as far as
> I could see all of them passed.
> However when running one of the samples from the tutorials with the
> following command:
> pw.x <Si.sample.in> Si.sample.out
> I get the following message during execution:
>
> [hsiles at localhost exercise1]$ pw.x <Si.sample.in> Si.sample.out
> Note: The following floating-point exceptions are signalling:
> IEEE_INVALID_FLAG IEEE_DENORMAL.
>
> There is an output file
>
> Does the message means any thing to worry about ??
>
>
>
>
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>



-- 
Paolo Giannozzi, Dept. Chemistry&Physics&Environment,
Univ. Udine, via delle Scienze 208, 33100 Udine, Italy
Phone +39-0432-558216, fax +39-0432-558222
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