[QE-users] restart with larger nqx1, nqx2,nqx3

[Eduardo Menendez]

Hi,
Some expensive calculations with hybrid functionals like HSE, can be
accelerated using downsampling, i.e., setting nqx1, nqx2,nqx3 to be
divisors of the kpoints grid dimensions, at the cost of decreasing quality.
In some cases, I would like to split the calculation by means of subsequent
calculations with increasing nqx1, nqx2,nqx3.
For large nqx1, nqx2,nqx3, I would like to start the calculation from the
wavefunctions obtained with smaller nqx1, nqx2,nqx3  (startingwfc ='file')
However, PWSCF always begins doing a GGA calculation, then it goes to
hybrid, writting a message "EXX: now go back to refine exchange
calculation".
However, in this process, one loses the wfn read from file.
 Is it possible to disable the initial GGA calculation with some keyword?
Can it be added to a wish list ?

Best regards,

Eduardo Menendez Proupin
--------------------------------------
I assume that you know enough never to evaluate a polynomial this way:
p=c(0)+c(1)*x+c(2)*x**2+c(3)*x**3+c(4)*x**4
NR, Sect. 5.3 Polynomials and Rational Functions
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