<div dir="ltr"><div>Dear users,</div><div>I'm trying to run a script based on example23 of thermo_pw. The first step with what=elastic_constants_t runs successfully but the second step with what=mur_lc_t shows the following error:</div><div>%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%<br>     task #         2<br>     from linsolvms : error #         3<br>     error in solving<br> %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%</div><div><br></div><div>So, to check, I tried to run my script using variables based on example22 of thermo_pw. But it showed the following error:</div><div>%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%<br>     task #         1<br>     from find_quartic_extremum : error #         1<br>     extremum not found<br> %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%</div><div><br></div><div>The above two runs were made on cluster. However, example22 being comparatively less bulky, I also tried running it on my personal system, and no error was faced during it. But, example23 being time consuming, I cannot test it on my personal system. <br></div><div>Can anyone let me know why I face such errors? Could it be due to any installation issue? If yes, why were there no errors while performing step1?<br></div><div>Any kind of help is appreciated.</div><div>Thanks.<br></div></div>