Yambo Community Forum

Dear all,

I have been doing some GW calculations on QE+Yambo. On some systems, I have experienced this error in the input step:

<---> [WARNING][RL indx] 2 equivalent points in the rlu grid found
<---> [RL indx] X grid is not uniform. Gamma point only.

I have read on other posts to use non-shifted grids and the force symmorphic set to true. However, I still have this problem. Moreover, when I do the p2y step and try to generate the input with high verbosity, the obtained file is empty or contains just the string 'setup'.
How can I solve it and to what is that related?

Thanks,
Laura

Dear Laura,

this is due to the fact that yambo sees your k point sampling as non uniform.
You can try to use a different algorithm for the setup of the k point grid, adding in your input file the keyword:
NoDiagSC

if it does not solve the problem, you can try to use a different QE input file choosing an ibrav different from zero.

Best,
Daniele