[Pw_forum] convergence not achieved

[Shyam Khambholja]

Dear all,
            I am doing total energy calculation for a system having two
atoms per unit cell. When doing it I am getting converged total energies
upto lattice constant a=7 bohr. When doing calculation for higher values of
a=8 bohr, I am getting following message.

convergence not achieved.
end of calculation.

and as a result, i am not getting value of total energy.
so, help me

thanks in advance


-- 
Shyam G Khambholja
Reseach student,
Depratment of Physics,
Sardar Patel University
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