[Pw_forum] insufficient virtual memory! What to do?

Paolo Giannozzi giannozz at nest.sns.it
Tue Aug 22 14:16:59 CEST 2006

On Friday 18 August 2006 23:47, Eyvaz Isaev wrote:

> Try reduce number of k-points or ecutrho. 

reducing the number of k-points will not help. Reducing
ecutwfc and/or ecutrho will. Also using the strict minimum
of states (nbnd) will help.

There are a few more options affecting memory usage: 
"diagonalization" ('cg' uses less memory), "startingwfc"
('atomic' may use a lot of memory),  "mixing_ndim" (the
largest, the more memory is used)

Paolo Giannozzi             e-mail:  giannozz at nest.sns.it
Scuola Normale Superiore    Phone:   +39/050-509876, Fax:-563513 
Piazza dei Cavalieri 7      I-56126 Pisa, Italy

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