<div style="line-height:1.7;color:#000000;font-size:14px;font-family:arial"><DIV>Hello,</DIV>
<DIV> As is know, GMRES(m) is a very efficient solver when dealing with symmetric indefinite</DIV>
<DIV>system. And the restarted parameter <EM>m</EM> is critical. When the system is small, I can do </DIV>
<DIV>several tests to find a suitable <EM>m</EM>. But when the system is very large, it is very difficult</DIV>
<DIV>to do that. I read lots of papers about GMRES(<EM>m</EM>) and find that almost none told the way to</DIV>
<DIV>get a suitable <EM>m</EM>. Someone told me that I can just choose the matrix dimension as the <EM>m</EM>, but</DIV>
<DIV>I find that it is not right.</DIV>
<DIV> So, generally, when using GMRES(<EM>m</EM>) as the sovler, how to use a suitable restarted <EM>m</EM>?</DIV>
<DIV> Thanks.</DIV>
<DIV> Jim </DIV></div><br><br><span title="neteasefooter"><span id="netease_mail_footer"></span></span>