The final version of the FUMILIM minimization package

Published: 28 February 2020| Version 2 | DOI: 10.17632/xphc8ctxr3.2
I.M. Sitnik,
I.I. Alexeev,
O.V. Selugin


The suggested package FUMILIM, based on the famous FUMILI minimization package, has the following advantages: multi-optional user interface; speed advantage when the number of parameters is high enough; there are options to ignore wrong experimental points and correct experimental errors. The preliminary scan is envisaged for complicated tasks. The next version of FUMILIM is capable of working efficiently with multidimensional experimental points, described by a vector function. For heavy user’s functions the parallel fit is envisaged by means of OpenMP service. The package contains popular intrinsic user’s functions. All of them can be used without the definition of the parameter initial values. The program of plane track reconstruction via drift chambers and straws, which can be combined with single detectors, is also included in the package. The capacity of this program is about of 0.5 x 10^6 tracks per second (at 2.8 GHz). In the final version a number of new intrinsic and extrinsic subroutines are incorporated into the package, and some of the existing procedures have been upgraded. The list of acceptable formats of experimental points has been expanded. The user interface is revised, which is coordinated with a number of users. Expanded the ability to control the program via common blocks. All programs are written in FORTRAN-90. The investigation has been performed at the Veksler and Baldin Laboratory of High Energy Physics, JINR.



Computational Physics, Least Squares Methods