[Pw_forum] Parallelization of diaghg

[Alexander Shaposhnikov]

Hi,

yet another parallelization issue. As far as i understand, subroutine  cdiaghg 
for davidson diagonalization  is not parallelized
by default (in recent versions) and this is for good, as enabling parallel 
algorithm ('david + para ') only increases computation time (almost always for 
me). 
Profiling shows this routine takes 1/2 -2/3 exec times for big  jobs running 
in parallel on 8-core dual Xeon clovertown 2.66GHz machine, so some working 
parallelization algorithm could give sizeable performance boost. 

I'd like to hear any comments from respected developers concerning this issue.

Best Regards,
Alexander Shaposhnikov