<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">It may be that in order to link to the new version of MKL the -openmp flag has been added to the LDFLAGS variable (see make.sys) . If you are running on a multicore or HT system, the OS may select automatically a number of threads greater than one and this is not efficient in your case perhaps. To see if this is the case you should monitor the number of running pw.x threads (these are usually hidden in the process list from the top command, you should press H in order to visualize all threads), or set<div>export OMP_NUM_THREADS=1</div><div>and rerun the job.</div><div><br></div><div>HTH</div><div><br></div><div>GS<br><div><br></div><div><div><div><div>Il giorno 07/mag/10, alle ore 19:42, <a href="mailto:saqib.javaid@ipcms.u-strasbg.fr">saqib.javaid@ipcms.u-strasbg.fr</a> ha scritto:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div>Dear PWSCF users,<br><br>I have a question regarding newer PWSCF version 4.1.3. I have been using 4.0.3<br>version for a while. I have recently complied 4.1.3 (which is done<br>successfully) but surprised to see that it is a lot slower than 4.0.3.<br>Installation has been done in the same envirement. I have been using<br>Intell-cc-10, intell_fc_10, mkl10 and openmpi<br>Apparently i am stuck somewhere in compatability. I would appreciate if you<br>could help me solve this problem<br>with best regards<br>saqib javaid<br>University of strasbourg<br><br><br>----------------------------------------------------------------<br>This message was sent using IMP, the Internet Messaging Program.<br>_______________________________________________<br>Pw_forum mailing list<br><a href="mailto:Pw_forum@pwscf.org">Pw_forum@pwscf.org</a><br>http://www.democritos.it/mailman/listinfo/pw_forum<br></div></blockquote></div><br><div> <span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: medium; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><div><span class="Apple-style-span" style="color: rgb(126, 126, 126); font-size: 16px; font-style: italic; "><br class="Apple-interchange-newline">§ Gabriele Sclauzero, EPFL SB ITP CSEA</span></div><div><font class="Apple-style-span" color="#7E7E7E"><i> PH H2 462, Station 3, CH-1015 Lausanne</i></font></div></span> </div><br></div></div></div></body></html>