Dear QE developers,<br><br>comparing vc-relax calculations between BFGS(4.2.1) and the latest BFGS(from CVS) I faced with a following problem:<br>the newest QE calculates one extra point after achieving convergence criteria (etot_conv_thr,force_conv_thr,press_conv_thr),<br>
which leads to slightly higher total energy.<br><br>Here are the two latest energies from outputs:<br> v.4.2.1 CVS(18.04.2011)<br><br>-242.66342170 Ry -242.66342267 Ry<br>-242.66342336 Ry -242.66284562 Ry<br>
<br clear="all">One can see that there is a good agreement between the last energy by v.4.2.1 and next to the last by CVS-version, whereas<br>the last energy by CVS is higher by ~ 0.5 mRy.<br><br>I tried relax (cell shape fixed) also - it works fine, no extra point calculation.<br>
<br>-- <br>Best regards, Max Popov<br>Ph.D. student<br>Materials center Leoben (MCL), Leoben, Austria.<br>