[Pw_forum] ATLAS DSYGVX problem + mailing list question

[Paolo Giannozzi]

Riccardo Di Meo wrote:

> It seems therefore that the culprit is the line:
> 
>      nb = ILAENV( 1, 'DSYTRD', 'U', n, -1, -1, -1 )
> 
> which produces two different results with the same input, although I 
> don't know why.

ILAENV is a Lapack auxiliary routine. The Atlas version of ILAENV
should return the value of nb that is most suited to the Atlas
version of Lapack. Apparently it doesn't even return a correct
value. Not a QE problem, apparently.

P.
-- 
Paolo Giannozzi, Democritos and University of Udine, Italy