Internal Error Cannot Braket Ef
If this does not hold, the code stops with the above error message. Please have a look! >> >> please have a look: which angle has -0.99 as cosine? >> >> > cosAC = -0.99 >> >> please have a look: if you put field with metals? 18.104.22.168 How can I calculate Raman/IR coefficients in metals? 22.214.171.124 How can I calculate the electron-phonon coefficients in insulators? Next: Contents Contents User's Guide for QUANTUM ESPRESSO (version 4.3.2) Contents 1 Introduction 1.1 What can QUANTUM ESPRESSO do 1.2 People 1.3 Contacts 1.3.1 Guidelines for posting to the mailing navigate here
efermig = Ef return end FUNCTION efermig Jump to Line Go Contact GitHub API Training Shop Blog About © 2016 GitHub, Inc. Different FFT libraries follow different rules and thus different dimensions can result for the same system on different machines (or even on the same machine, with a different FFT). Machine-optimized mathematical libraries are very fast but sometimes not so robust from a numerical point of view. It is quite normal for iterative methods to reach convergence through different paths as soon as anything changes. useful source
Here is both of my input and output files. As the numerical accuracy of computer numbers is finite, this can yield slightly different results. Paolo Giannozzi 2011-07-17 Skip to site navigation (Press enter) [Pw_forum] internal error, cannot bracket Ef Manu Hegde Wed, 18 Dec 2013 19:06:25 -0500 Dear Prof.Paolo, In the PW input, while defining Udine, via delle Scienze 208, 33100 Udine, ItalyPhone +39-0432-558216, fax +39-0432-558222 Yevgen Melikhov 2015-08-20 07:14:50 UTC PermalinkRaw Message Thank you, Paolo!I am trying these things right now.
Try to run interactively and to write to the screen. Since v.4.2, this is for sure the reason if the code stops at Waiting for input.... 126.96.36.199 pw.x stops with error while reading data There is an error in the input I tried to restart the job but the problem,in my opinion, is not in having not enough time to finish SCF calculations but ratherin oscillations of the scf accuracy (please see No luck: you have to restart from scratch. 188.8.131.52 pw.x stops with inconsistent DFT error As a rule, the flavor of DFT used in the calculation should be the same as
If the highest occupied and lowest unoccupied state(s) keep exchanging place during self-consistency, forget about reaching convergence. You may still report your problem, but consider that reports like it crashes with...(obscure MPI error) contain 0 bits of information and are likely to get 0 bits of answers. 184.108.40.206 This happens only with core corrections and with USPPs. On most machines and on most operating systems, depending on machine load, on communication load (for parallel machines), on various other factors (including maybe the phase of the moon), reported execution
A limitation to the accuracy of forces comes from the absence of perfect translational invariance. When the program crashes, part of the output, including the error message, may be lost, or hidden into error files where nobody looks into. Possible solutions: start with a nonsymmetric cell; use a symmetry-conserving algorithm: the Wentzcovitch algorithm (cell dynamics='damp-w') should not break the symmetry. Note that, since QE 5.1, restarting from arbitrary places is no more supported: the code must terminate cleanly.
The differences should go away (but it will probably take a few more iterations to converge). 220.127.116.11 Execution time is time-dependent! Generated Thu, 10 Nov 2016 01:00:25 GMT by s_hp90 (squid/3.5.20) My input file, &CONTROL calculation = 'scf' , restart_mode = 'from_scratch' , outdir = '/home/owner/' , wfcdir = '/home/owner/' , pseudo_dir = '/host/qexpress/espresso-5.0.2/pseudo/' , prefix = 'ga203newscf' , / &SYSTEM ibrav Elw = et (1, 1) Eup = et (nbnd, 1) do kpoint = 2, nks Elw = min (Elw, et (1, kpoint) ) Eup = max (Eup, et (nbnd, kpoint) )
As a consequence, the energy may be slightly different on different machines. check over here Copyright (C) 2001-2003 PWSCF group ! In the atomic coordinates do I need to insert the coordinates of those 20 atoms?. maybe your input data are weird. 18.104.22.168 FFT grid is machine-dependent Yes, they are!
Otherwise, the origin of the negative charge is the following. My knowledge in crystallography is pretty bad!. If the error is reproducible and happens at the beginning of a calculation: check if you have read/write permission to the scratch directory specified in variable outdir. http://pgexch.com/internal-error/internal-error-cannot-instantiate-int.html Please try the request again.
Reload to refresh your session. This is the case for C60, for instance: the Ih icosahedral group of C60 contains 5-fold rotations that are incompatible with translation symmetry. Unpredictable behavior may follow.
Reduce nbnd to the strict minimum (for insulators, the default is already the minimum, though).
In this case, all symmetry operations containing fractional translations are disabled. Raising the ecutrho cutoff for charge density will usually help. 22.214.171.124 I do not get the same results in different machines! Known cases: HP-Compaq alphas with cxml libraries, Mac OS-X with system BLAS/LAPACK. In particular, between serial and parallel execution there are operations that are not performed in the same order.
If the problem persists, recompile with reduced optimization level. Other possible reasons for a problematic convergence are listed below. sumkup = sumkg (et, nbnd, nks, wk, Degauss, Ngauss, Eup, is, isk) sumklw = sumkg (et, nbnd, nks, wk, Degauss, Ngauss, Elw, is, isk) if ( (sumkup - nelec) < -eps weblink ERROR The requested URL could not be retrieved The following error was encountered while trying to retrieve the URL: http://0.0.0.9/ Connection to 0.0.0.9 failed.
Regards, Manu On Wed, Dec 18, 2013 at 11:13 AM, Manu Hegde