[QE-users] qe-6.4.1-qmcpack vs qe-6.7 Performace?

2021-02-15 Thread Stephen Zhang
Hi Everyone, I'm currently using both the latest qe-6.7 and qe-6.4.1 qmcpack in my school computing HPC cluster and i've noticed that qe-6.4.1-qmcpack's version of pw.x is several times faster than qe-6.7 when performing scf and nscf runs. Both were configured for parallel runs using openmpi.

Re: [QE-users] Error in routine cdiaghg (1): problems computing cholesky

2021-02-15 Thread Robert Stanton
Hello Bhumika, This cholesky issue can happen when the input geometry is problematic. I believe in your case you have some atoms overlapping in the periodic images. You can double check this with a GUI/visualizer if needed, or use the materialscloud resource to generate input directly from

[QE-users] Error in routine cdiaghg (1): problems computing cholesky

2021-02-15 Thread Bhumika Longakshi
Dear All, I have been trying to do BOMD simulation but it is giving me an error message: Error in routine cdiaghg (1): problems computing cholesky Below is the input script and the output message. Can you please help me with this? calculation = 'relax' prefix = 'ni'

Re: [QE-users] Fwd: error with qe 6.5

2021-02-15 Thread José Carlos Conesa Cegarra
Dear all, Indeed I mistakedly confounded the conv_thr and ecutwfc values. Looking at the instructions I see now that ecutwfc is a value in Rydbergs. One reason for my mistake is that the ecutwfc values suggested for Co and Sn in the pseudos I used are 0.00 Ry; I did not go further, if I had

Re: [QE-users] Fwd: error with qe 6.5

2021-02-15 Thread Giuseppe Mattioli
Dear José Maybe you are mistaking ecutwfc (in namelist ) with conv_thr (in namelist ). The former is the wavefunction cutoff (in Ry). Its generally meaningful values, depending on pseudopotential type, are in a 25~250 Ry range. Thus your 1.0D-8 value is absurdly small. The latter is the

Re: [QE-users] Fwd: error with qe 6.5

2021-02-15 Thread Claudio A. Perottoni
Your are using a too small ecutwfc. The table in https://www.materialscloud.org/discover/sssp/table/ gives you some suggested wave function cuttoffs (60 Ry for N, for instance). You may also try the QE input generator https://www.materialscloud.org/work/tools/qeinputgenerator Claudio On Mon, Feb

Re: [QE-users] Fwd: error with qe 6.5

2021-02-15 Thread José Carlos Conesa Cegarra
I mean, ecutwfc=1.0D-8 JC Conesa El 14/02/2021 a las 20:38, Paolo Giannozzi escribió: "decreasing" ? On Sun, Feb 14, 2021 at 8:16 PM José Carlos Conesa Cegarra mailto:jccon...@icp.csic.es>> wrote: Dear all, Even decreasing ecutwfc by two orders of magnitude the error remains

Re: [QE-users] Installing Quantum-Espresso on Cluster running Scientific Linux (Red-Hat Derivative)

2021-02-15 Thread Paolo Giannozzi
My limited experience, many years ago, with Scientific Linux was very negative. Anyway: as long as your software is properly installed, you should not need anything more complex than "./configure; make [your targets]" . In my experience the Intel compiler produces the fastest executables, but

Re: [QE-users] Linear Response and TD-DFPT

2021-02-15 Thread Giuseppe Mattioli
Dear Lucas TDDFPT is definitely a linear-response method. If you want to read something, there is plenty of references in this file /path-to-your-QE/TDDFPT/README HTH Giuseppe Quoting Lucas Nicolás Lodeiro Moraga : Hello all, I am introducing myself into the Time Dependent DFT to compute