EPIO

Experimental Physics Input Output Package

User's Guide

Application Software and Databases Group

Computing and Networks Division

CERN Geneva, Switzerland

History

Hans Grote/SL was one of the original two authors of the EPIO package.

The EPIO offline package is intended to be used for all data (at least on tape) in an experiment, in such a way that from the raw data tape to the DST, the tape (or file) format is identical. This makes the transport of data between computers trivial, and simplifies the task of passing the files or tapes at different stages of the production chain through any other part of the production chain.

The package has been developed at CERN as a part of packlib.

Version 1.66 of EPIO introduced a standard Fortran 77 version which is the base for the Unix versions.

We would like to encourage all users to contact us in case:

they detect mistakes in the manual or the package,
they would like to see something to be added to the manual or described in more detail,
they would like to see features added to the package.

Remember that your collaboration in this is vital, and that the poor man in (Saclay, Rome, Vienna, Hamburg, etc.) may desperately be trying to find and fix a bug that you have just corrected, but told nobody (and vice versa, of course).

Preliminary remarks

This manual serves at the same time as a Reference manual and as a User Guide for the EPIO package.

In this manual examples are in monotype face and strings to be input by the user are underlined. In the index the page where a routine is defined is in bold, page numbers where a routine is referenced are in normal type.

In the description of the routines a * following the name of a parameter indicates that this is an output parameter. If another * precedes a parameter in the calling sequence, the parameter in question is both an input and output parameter.

This document has been produced using LaTeX [1] with the cernman style option, developed at CERN. A compressed PostScript file epio.ps.Z, containing a complete printable version of this manual, can be obtained from any CERN machine by anonymous ftp as follows (commands to be typed by the user are underlined):

ftp asis01.cern.ch
    Trying 128.141.201.136...
    Connected to asis01.cern.ch.
    220 asis01 FTP server (Version 6.10 ...) ready.
    Name (asis01:username): anonymous
    Password: your_mailaddress
    230 Guest login ok, access restrictions apply.
    ftp> cd cernlib/doc/ps.dir
    ftp> get epio.ps
    ftp> quit

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