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The PSCF package provides three executable programs named pscf_1d, pscf_pc and pscf_pg. The intended purpose and basic capabilties of each program are described below;

pscf_1d:

The pscf_1d program is designed to performed SCFT calculations on one-dimensional problems in Cartesian, cylindrical or spherical coordinates. A simple finite difference method is used to solve the underlying modified diffusion equation. This program is useful for SCFT problems involving flat or curved interfaces, and for simulating spherical or cylindrical copolymer micelles. This program cannot be used for field theoretic simulation.

pscf_pc:

The pscf_pc program is designed to treat problems with periodic boundary conditions in 1, 2 or 3 dimensions, using conventional CPU hardware. A pseudo-spectral algorithm is used to solve the MDE. This program provides capabilities for SCFT calculations of periodic microstructures analogous to those of the older PSCF Fortran program, and can also perform PS-FTS calculations. The suffix "pc" stands for "periodic CPU".

pscf_pg:

The pscf_pg program is a GPU-accelerated variant of pscf_pc that can also perform both SCFT and PS-FTS calculations with periodic boundary conditions. The pscf_pc and pscf_pg programs are based on analogous algorithms, and provide identical features with identical user interfaces. The only important difference between pscf_pc and pscf_pg is that pscf_pg uses a GPU accelerator, which provides higher performance for problems involving a sufficiently large number grid points per unit cell. The suffix "pg" stands for "periodic GPU".

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