<p dir="ltr">The most strangest thing is that you believe there are just 1 reason for broblem in diagolalization. I can write a whole book chapter about the possible causes.</p>
<p dir="ltr">------------------------------------------<br>
S. J. Mahdizadeh</p>
<div class="gmail_extra"><br><div class="gmail_quote">On Oct 22, 2017 4:33 PM, "Giuseppe Mattioli" <<a href="mailto:giuseppe.mattioli@ism.cnr.it">giuseppe.mattioli@ism.cnr.it</a>> wrote:<br type="attribution"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><br>
Dear Bhushan<br>
Please forget about strange suggestions received in previous messages.<br>
Difficulties in diagonalization such as that reported in your message<br>
depend almost always on 1) badly wrong structures and/or 2) poor<br>
convergence of basis set. It is impossible to say more if you don't<br>
attach any input file, and this should definitely be the best practice<br>
when reporting errors and/or asking for help in this forum.<br>
HTH<br>
Giuseppe<br>
<br>
B S Bhushan <<a href="mailto:ecebhushan@gmail.com">ecebhushan@gmail.com</a>> ha scritto:<br>
<br>
> Dear Expert,<br>
><br>
> I was getting the below error while trying to vc-relax a doped graphene.<br>
> can you please suggest why is it occurring??<br>
><br>
><br>
> iteration # 9 ecut= 30.00 Ry beta=0.70<br>
> Davidson diagonalization with overlap<br>
><br>
><br>
> %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%<wbr>%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%<wbr>%%%%%%%%%%%%%%%%%%<br>
> Error in routine cdiaghg (261):<br>
> problems computing cholesky<br>
><br>
> %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%<wbr>%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%<wbr>%%%%%%%%%%%%%%%%%%<br>
><br>
> stopping ...<br>
> application called MPI_Abort(MPI_COMM_WORLD, 1) - process 22<br>
> application called MPI_Abort(MPI_COMM_WORLD, 1) - process 20<br>
> application called MPI_Abort(MPI_COMM_WORLD, 1) - process 4<br>
> application called MPI_Abort(MPI_COMM_WORLD, 1) - process 2<br>
><br>
><br>
><br>
><br>
> Sincerely,<br>
><br>
> B S Bhushan,<br>
> Ph.D scholar,<br>
> ABV-IIITM Gwalior, India.<br>
<br>
<br>
<br>
GIUSEPPE MATTIOLI<br>
CNR - ISTITUTO DI STRUTTURA DELLA MATERIA<br>
Via Salaria Km 29,300 - C.P. 10<br>
I-00015 - Monterotondo Scalo (RM)<br>
Mob (*preferred*) +39 373 7305625<br>
Tel + 39 06 90672342 - Fax +39 06 90672316<br>
E-mail: <<a href="mailto:giuseppe.mattioli@ism.cnr.it">giuseppe.mattioli@ism.cnr.it</a>><br>
<br>
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</blockquote></div></div>