<div>Dear Mark:</div>
<div> As you said at the topic '"Best" RMT for a given total matrix size ' :</div>
<div><em>"For a<em> fixed matrix size </em>(by adjusting RKMAX</em><i> appropriately), run a series of small calculations (e.g. a simple bulk </i><i>material) varying the RMT's to find the lowest energy. For instance, with a
</i><i>binary AB run with RMT_B=constant-RMT_A ....."</i></div>
<div><em>I want to know </em></div>
<div><em> 1) how to set a <em>fixed matrix size by <em>adjusting RKMAX appropriately?</em></em></em></div>
<div><em> for example:
<p> case.scf1<br> :RKM : MATRIX SIZE 565LOs: 36 RKM= 8.31 WEIGHT= 1.00 PGR</p>
<p> case.scf2<br> :GMA : POTENTIAL AND CHARGE CUT-OFF 14.00 Ry**.5</p>
<p> RMT(A)= 2.05 RNT(B)= 2.15</p>
<p> the MATRIX SIZE is 565, why? I set RKM=8.5, why there is RKM= 8.31 ? KMAX=8.31/2.05 then why POTENTIAL AND CHARGE CUT-OFF 14.00 Ry**.5? larger then 2*Gmax ?</p>
<p> 2) <em>RMT_B=constant-RMT_A , but the 'constant' = ??</em></p>
<p> Does the constant influence the result?</p>
<p> 3) the MATRIX size will influence the result ? how does the MATRIX size influence the system's total energy?</p></em></div>
<div><em>Thanks!</em></div>
<div><em></em> </div>
<div><em>Best regards!</em></div>
<div><em> Pengfei </em><br clear="all"><br>-- <br>--------------------------------------------------------------------------
<br>Guan Pengfei, Ph. D<br>Inst.f. Physics, Tsinghua U, Beijing, China<br>Phone: +86-010-6218-2756 Mobile: +86-138-1060-9671<br>Email: <a href="mailto:miracle.fei@gmail.com">miracle.fei@gmail.com</a> <br>WWW: <a href="http://www.phys.tsinghua.edu.cn">
http://www.phys.tsinghua.edu.cn</a><br>-------------------------------------------------------------------------- </div>