<DIV>Dear all users</DIV> <DIV> </DIV> <DIV>I have done a self-consistent calculation with pw.x, then a phonon calculation <STRONG>at Gamma</STRONG> pwith ph.x. =>gaas.dynG</DIV> <DIV>After that I perform Fourier transformation with q2r.x and run matdyn.x to recalculate phonon modes.</DIV> <DIV>This is my q2r.in</DIV> <DIV> </DIV> <DIV><EM>&input<BR> fildyn='gaas.dyn', zasr='simple', flfrc='gaas1.fc'<BR> /</EM></DIV> <DIV> </DIV> <DIV>I followed the example06 of PWSCF (for a grid of q-points, not only at Gamma as my case), but q2r.x give error message:</DIV> <DIV> </DIV> <DIV><EM>forrtl: severe (19): invalid reference to variable in NAMELIST input, unit 5, file stdin, line 2, position 9<BR>Image PC Routine
Line Source <BR>q2r.x 082BD88C Unknown Unknown Unknown<BR> <BR>Stack trace terminated abnormally.</EM></DIV> <DIV><EM></EM> </DIV> <DIV>Do the q2r.x run only in case of grid of q-points? and not in 1 point (Gamma)? </DIV> <DIV>Please tell me how to set up the input-files of q2r.x in case of phonon calculation only at Gamma. </DIV> <DIV>Thank you very much.</DIV><p>
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