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Manuscript Title: A fast CYBER 205 - ETA-10 program for SU(3) lattice gauge theory.
Authors: C. Vohwinkel, B.A. Berg, A. Devoto
Program title: U3MAIN
Catalogue identifier: ABDJ_v1_0
Distribution format: gz
Journal reference: Comput. Phys. Commun. 51(1988)331
Programming language: Fortran.
Computer: CDC CYBER 205, ETA-10.
Operating system: CDC FORTRAN 200.
Word size: 32
Keywords: Particle physics, Elementary, Qcd, Su(3) lattice gauge Theory, Monte carlo simulations, Vector processors.
Classification: 11.5.

Nature of problem:
The program simulates SU(3) lattice gauge theory with periodic boundary conditions.

Solution method:
The Cabibbo Marinari algorithm is used to update the links while a recently proposed method is employed to sweep through the lattice.

Restrictions:
The program uses periodic boundary conditions and the checkerboard (with two or more colors) algorithm. For this reason the lattice size in every direction (the parameters NLX, NLY, NLZ, NLT) must be a multiple of the number colors in the checkerboard algorithm (the parameter NCOL).

Running time:
On the CYBER 205 the link update time is 55.9ms on a 4**4 lattice, 19.1ms on a 8**4 lattice and 17.3ms on a 16**4 lattice for 32-bit arithmetic. With 64-bit arithmetic the link update time is 69.9ms and 32.5ms on 4**4 and 8**4 lattices respectively.