<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META http-equiv=Content-Type content="text/html; charset=gb2312">
<META content="MSHTML 6.00.6000.16414" name=GENERATOR>
<STYLE></STYLE>
</HEAD>
<BODY bgColor=#ffffff>
<DIV><FONT face=Arial size=2>
<DIV><FONT face=Arial size=2>Dear users,</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I'm trying to implement PZ-SIC in PWSCF. In PZ-SIC,
the Fock matrix is not symmetric any more. I can not use DIIS or Davidson since
both of them are for the hermitian matrix. I checked CG codes. It seems that CG
can be used in the gereral matrix. If you are familiar with the CG
diagonalization, please tell me some details.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Thank you very much.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Best,</FONT></DIV>
<DIV><FONT face=Arial size=2>Xiangqian</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV></FONT></DIV></BODY></HTML>