  An efficient implementation of the self-consistent GW method in the FlapwMBPT
code (https://www.bnl.gov/cmpmsd/flapwmbpt/) is presented. It features the
evaluation of polarizability and self-energy which scales linearly with respect
to the system size. Altogether the computational time scaling was measured to
be between linear and quadratic in the applications to silicon supercells with
up to 72 atoms. Application to such materials as paracostibite CoSbS,
supercells of La$_{2}$CuO$_{4}$ (up to 56 atoms) and SmB$_{6}$ illustrate the
potential of the approach in computational material science.

Materials Science