<div dir="ltr">What RMT's?</div><div class="gmail_extra"><br><div class="gmail_quote">On Fri, Oct 10, 2014 at 11:18 AM, Pavel Ondračka <span dir="ltr"><<a href="mailto:pavel.ondracka@email.cz" target="_blank">pavel.ondracka@email.cz</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Laurence Marks píše v Pá 10. 10. 2014 v 09:03 -0500:<br>
> I forgot that your case has no inversion symmetry -- you need to use<br>
> "x RMTCheck -c". Please send me that output so I can make educated<br>
> guesses.<br>
<br>
x RMTCheck -c output attached.<br>
><br>
><br>
> If you are using -it then increasing nband and emax can help. The<br>
> iterative methods use an expansion in terms of the previous<br>
> eigensolutions, both occupied and some unoccupied. If this expansion<br>
> is not "adequate" I am pretty certain one starts to get ghostbands and<br>
> many other problems. (This is more intuition and experience than any<br>
> proper math.)<br>
><br>
><br>
> I do know that for MSR1a one can often improve things a little by<br>
> using more solutions, the speed cost is very minor so long and you do<br>
> not use extreme increases. I also prefer -noHinv, but that is my<br>
> personal view not a general suggestion.<br>
<br>
<br>
<br>
</blockquote></div><br><br clear="all"><div><br></div>-- <br><div dir="ltr">Professor Laurence Marks<br>Department of Materials Science and Engineering<br>Northwestern University<br><a href="http://www.numis.northwestern.edu" target="_blank">www.numis.northwestern.edu</a><div>Corrosion in 4D: <a href="http://MURI4D.numis.northwestern.edu" target="_blank">MURI4D.numis.northwestern.edu</a><br>Co-Editor, Acta Cryst A<br>"Research is to see what everybody else has seen, and to think what nobody else has thought"<br>Albert Szent-Gyorgi</div></div>
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