# A vectorized code for the pseudofermion simulation of QCD with dynamical quarks

## Description

Abstract We present a FORTRAN code for the Monte Carlo simulation of Quantum Chromodynamics with dynamical fermions, using the pseudofermion algorithm. The code is fully vectorized and optimized for the CDC CYBER 205, taking advantage of high performance features like 32-bit arithmetic, gather/scatter hardware and asynchronous I/O. Nonetheless, the code is largely portable and performs well on other vector computers. Title of program: PSEUDOF Catalogue Id: ABDH_v1_0 Nature of problem Monte Carlo simulations of Quantum Chromodynamics (QCD) often neglect the effects of virtual quark loops. These effects can be included using the pseudofermion algorithm, giving a complete solution of QCD and a more accurate description of hadronic phenomena. Versions of this program held in the CPC repository in Mendeley Data ABDH_v1_0; PSEUDOF; 10.1016/0010-4655(88)90193-2 This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2019)