[Pw_forum] error in para_zcholdc

[Paolo Giannozzi]

On Oct 21, 2006, at 1:36 , Sergey Lisenkov wrote:

>      from para_zcholdc : error #      1385
>      a is not positive definite

if a is REALLY not positive definite, there is little that can be done.
If it is a weirdness of the new parallel algorithm for subspace
diagonalization: disable it by commenting the call to routine
check_para_diag_efficiency in PW/setup.f90

Paolo