[QE-users] Convergence test for ecutrho - Reg

[singaravelan T R]

Dear all,
Say I am working with silicon, in that ,I have done the convergence test
for ecutwfc and got the optimized ecutwfc.
In tutorial files it is given ecutrho = 4(ecutwfc) is the default value.
For USPP ecutrho is 8-12 times ecutwfc.
*Question: how I can find which is better estimate of ecutrho? that is: 8
times the ecutwfc or 12 times the ecutwfc . To find that do I need to run
any convergence test for ecutrho like doing for ecutwfc?*
*With thanks*
Singaravelan T R
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