The organization and maintenance of the CDF offline code on IBM VM/CMS and DEC VAX/VMS operating systems

The CDF collaboration at FERMILAB is developing most of its offline data analysis software on the FNAL VAX cluster. However, the large amounts of computing time required to analyze the CDF data require this software to be available on several remote installations, ranging from small VAX mini-computers to large IBM and IBM-compatible mainframes. This need has been met by requiring the software to be Fortran-77 compatible and organizing the code in such a manner that it can be mapped in a natural way to several different machine architectures. The current version of the CDF code is now installed on both the FNAl VAX cluster and an IBM mainframe at University of Pennsylvania. To ensure that this rapidly evolving code remains up-to-date at the remote installation, an automated code-updating scheme has been implemented that performs daily updates of the CDF code via BITNET. This paper describes the implementation and current status of this multi-machine code management system. (orig.)