EPW Forum

dear sir, in the very begining of the calculation. I am getting this error. may I have explanation of all parameter of epw input file to calculate electron linewidth.

thank you

vinpeandey wrote:dear sir, in the very begining of the calculation. I am getting some bingo views this error. may I have explanation of all parameter of epw input file to calculate electron linewidth.

thank you

Are you still getting the error?

Hi,
I started using EPW package in quantum espresso software. I am a new beginner. I have exactly followed the diamond problem in test file. I am following these command to run the codes.
The steps are...
mpirun -np 4 pw.x <scf.in> scf.out
mpirun -np 4 ph.x <ph.in> ph.out
python pp.py
mpirun -np 4 pw.x <scf.in> scf.out
mpirun -np 4 pw.x -npool <nscf.in> nscf.out
mpirun -np 4 epw.x <epw.in> epw.out

once i run epw.x, I get this error..
"APPLICATION TERMINATED WITH THE EXIT STRING: Broken pipe (signal 13)"
why can this error be happened?

Hello,

It should be

mpirun -np 4 epw.x -npool 4 <epw.in> epw.out

sponce wrote:Hello,

It should be

mpirun -np 4 epw.x -npool 4 <epw.in> epw.out

Thank you very much for your kind reply. After using this command(mpirun -np 4 epw.x -npool 4 <epw.in> epw.out), I am still getting the same error(APPLICATION TERMINATED WITH THE EXIT STRING: Broken pipe (signal 13)). What does that error mean?

Hello,

The nscf also needs 4 cpu:

mpirun -np 4 pw.x -npool 4 <nscf.in> nscf.out
mpirun -np 4 epw.x -npool 4 <epw.in> epw.out

Best,
Samuel

sponce wrote:Hello,

The nscf also needs 4 cpu:

mpirun -np 4 pw.x -npool 4 <nscf.in> nscf.out
mpirun -np 4 epw.x -npool 4 <epw.in> epw.out

Best,
Samuel

Still I am getting same error. Is it installation error or other error?

Hello,

Yes, its likely an installation error then.

Does it work in sequential ?

Do you see the EPW logo then it segfault ?
What is the full error message ?

If you do
mpirun --version

you get the intel version correctly ?

Best,
Samuel

sponce wrote:Hello,

Yes, its likely an installation error then.

Does it work in sequential ?

Do you see the EPW logo then it segfault ?
What is the full error message ?

If you do
mpirun --version

you get the intel version correctly ?

Best,
Samuel

Hi,
Yes, EPW logo is there.
Yes, It is showing intel version correctly.
The full error is given below..


S. Ponce, E. R. Margine, C. Verdi, and F. Giustino,
Comput. Phys. Commun. 209, 116 (2016)



Program EPW v.4.1.0 (svn rev. 13369) starts on 2Nov2017 at 18:38:16

This program is part of the open-source Quantum ESPRESSO suite
for quantum simulation of materials; please cite
"P. Giannozzi et al., J. Phys.:Condens. Matter 21 395502 (2009);
URL http://www.quantum-espresso.org",
in publications or presentations arising from this work. More details at
http://www.quantum-espresso.org/quote

Parallel version (MPI), running on 4 processors
K-points division: npool = 4

Reading data from directory:
./temp_diam/diam.save

Info: using nr1, nr2, nr3 values from input

Info: using nr1, nr2, nr3 values from input

IMPORTANT: XC functional enforced from input :
Exchange-correlation = SLA PW PBE PBE ( 1 4 3 4 0 0)
Any further DFT definition will be discarded
Please, verify this is what you really want

file C.pbe-rrkjus.UPF: wavefunction(s) 2S 2P renormalized

G-vector sticks info
--------------------
sticks: dense smooth PW G-vecs: dense smooth PW
Sum 367 367 121 4645 4645 893


Possibly too few bands at point 1 0.00000 0.00000 0.00000

Possibly too few bands at point 2 -0.33333 0.33333 -0.33333

Possibly too few bands at point 3 -0.66667 0.66667 -0.66667

Possibly too few bands at point 4 0.33333 0.33333 0.33333

Possibly too few bands at point 5 0.00000 0.66667 0.00000

Possibly too few bands at point 6 -0.33333 1.00000 -0.33333

Possibly too few bands at point 7 0.66667 0.66667 0.66667
APPLICATION TERMINATED WITH THE EXIT STRING: Broken pipe (signal 13)

Hi,
Do you have any idea about that error(APPLICATION TERMINATED WITH THE EXIT STRING: Broken pipe (signal 13)) what I am getting?