it only means the the QE implementation of GW is supposed to be (much) faster thatn other competing GW implementation. Of course, this does not imply that GW is any faster than plain DFT calculations (it is actually much slower!). SB
On Jul 5, 2010, at 2:41 AM, Q.J.Wang wrote: > Dear all > I have a problem about the GW method. In the forum, I found some people > said GW allows to address large systems (a few hundreds of atoms).But I don't > know where ? We know the course of computing the GW quasi-particle energies > is the following : > 1. pw.x > 2. pw4gww.x > 3. gww.x > If we want to calculate a large system, we must optimized it first with pw.x > which is still time-consuming. So I want to know what makes the GW code can > calculate the large system and where it reflects in the course of using GW > code ? > > -- > Best regards > > Q.J.Wang > > XiangTan University > > > _______________________________________________ > Pw_forum mailing list > Pw_forum at pwscf.org > http://www.democritos.it/mailman/listinfo/pw_forum --- Stefano Baroni - SISSA & DEMOCRITOS National Simulation Center - Trieste http://stefano.baroni.me [+39] 040 3787 406 (tel) -528 (fax) / stefanobaroni (skype) La morale est une logique de l'action comme la logique est une morale de la pens?e - Jean Piaget Please, if possible, don't send me MS Word or PowerPoint attachments Why? See: http://www.gnu.org/philosophy/no-word-attachments.html -------------- next part -------------- An HTML attachment was scrubbed... URL: http://www.democritos.it/pipermail/pw_forum/attachments/20100705/3d41c8e9/attachment.htm
