Yambo Community Forum

Dear all,
I want to do a GoWo and BSE calculation on top of COHSEX . First, I do a COHSEX calculation by using yambo_sc "yambo_sc -v h+coh+sex -X s -s" (viewtopic.php?p=10031&hilit=COHSEX+level+GW#p10031). But it stopped at the following step
[06] Self-Consistent COH+SEX+HARTREE
====================================


[SC] Self-Consistency (SC) : yes
[SC] Restart (quick rebuild) : no
[SC] Restart + SC : no
[SC] Non SC single shot : no
[SC] Bands : 1 156
[SC] Bands mixing : 100.0000
[SC] Use non-local mixing : no
[SC] Preconditioning : simple
[SC] Diagonal approximation : no
[SC] N (N-1) order mixing : 0.500000
[SC] Imposed accuracy on density : 0.100000E-4
[SC] on magnetization: 0.100000E-4
[SC] on energies : 0.010000 [eV]


[WARNING] HXC collisions not found. Potential is computed on the fly.

Here I post the input and log file. Would you please help me check which variables is not correct? Thank you!

Dear Quxiao,

the reported Warning is harmless. The problem here seems to be related to a memory issue: Please note that the yambo_sc release is experimental and your calculation seems to be quite demanding.

You can try to run the calculation using more CPUs (parallelizing on bands only):

or reduce the number of bands to be calculated.
Best,

Daniele