Browse Prior Art Database

Partition Identifier Feedback Mechanism

IP.com Disclosure Number: IPCOM000123887D
Original Publication Date: 1999-Jun-01
Included in the Prior Art Database: 2005-Apr-05
Document File: 1 page(s) / 37K

Publishing Venue

IBM

Related People

Bealkowski, R: AUTHOR [+2]

Abstract

Disclosed is a diagnostic and measurement apparatus for partitioned computer systems which identifies the originating partition of an access cycle.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 99% of the total text.

Partition Identifier Feedback Mechanism

   Disclosed is a diagnostic and measurement apparatus for
partitioned computer systems which identifies the originating
partition of an access cycle.

   The figure shows a high-level view of a symmetric
multiprocessor (SMP) system, processor (uP) partitioning and the
Partition Identifier (ID) Feedback apparatus.  During the physical
partitioning phase of a large SMP it is necessary to check that the
components of a partition correctly identify themselves.  During
run-time, monitoring various system traffic provides reconfiguration
and tuning parameters.  The diagnostic and measurement features allow
for a positive setup and verification of a physical partitioning
configuration as well as run-time monitoring data.

   The Arbiter identifies the originating processor of each
cycle.  At system initialization time, the Arbiter is programmed
with partition membership information for each processor.  The
Arbiter presents the partition identifier (and other information
such as processor ID, target location, etc.) to the Partition ID
Feedback subsystem via sideband signals.

   The Partition ID Feedback operates in one of two basic
modes, Diagnostic or Monitoring.  In Diagnostic Mode the feedback
information is captured and held until explicitly reset.  In
Monitoring Mode the feedback information changes real-time.  The
Monitoring Subsystem can extract feedback data during a predefined
time window after a feedback valid strobe i...