Stephen Guendert, Ph.D.

Steve Guendert, aka “Dr. Steve”, is in an IBM Z senior engineering role based in Poughkeepsie where he is on the IBM Z Hardware architecture team. He works on all aspects of IBM Z I/O and timing architecture, including the Server Time Protocol (STP), FICON and zHPF architectures. He is a member of the Mainframe Hall of Fame and the IBM Academy of Technology.
IBM z16 “Time Direct to the CEC”

IBM z16 “Time Direct to the CEC”

The IBM z16 became generally available (GA) in May 2022. It introduced yet another significant change to IBM Z time synchronization via the new “time direct to the CEC” functionality. This article will briefly review the z15 time synchronization change that served as...

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A Brief History of (Mainframe) Time

A Brief History of (Mainframe) Time

Timing, timekeeping, time synchronization, more specifically accurate synchronization, is a key requirement for modern information technology systems.  This is especially true for industries involved in transaction processing such as the financial industry.  As such,...

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