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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Hi Quantum Espresso users, <o:p></o:p></p><p class=MsoNormal>I am currently doing HSE calculations for a system I am working on. I have been having a hard time finding the input parameter to control the convergence of the exchange term. After each converged SCF cycle QE prints out this line”<br>est. exchange err (dexx) = 0.00000002 Ry<br>I have found in my calculations, and for the properties I am interested in I can get away with the dexx being larger and considering the calculation to be complete. I want to set the convergence criteria for dexx to be larger than it currently is. I have looked into the source code and the input descriptions webpage and have not been able to figure out how I would do this.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Thanks in advance<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Robert Hembree<o:p></o:p></p><p class=MsoNormal>Grad Student<o:p></o:p></p><p class=MsoNormal>Quantum Theory Project<o:p></o:p></p><p class=MsoNormal>University of Florida<o:p></o:p></p><p class=MsoNormal><span style='color:#1F497D'>(sorry if I double posted)<o:p></o:p></span></p></div></body></html>