Administrator's Guide

Planning the Fabric
Hyper Messaging Protocol (HMP)
Chapter 2 27
HP MPI is a native implementation of version 1.2 of the
Message-Passing Interface Standard. It has become the industry
standard for distributed technical applications and is supported on
most technical computing platforms.
Features
The following are the HyperFabric features on HMP:
• OnLine Addition and Replacement (OLAR)
The OLAR feature, which allows the replacement or addition of
HyperFabric adapter cards while the system (node) is running, is
supported when applications use HMP to communicate.
• Event Monitoring Service (EMS): Supported
In the HyperFabric version B.11.23.01, the HyperFabric EMS
monitor enables the system administrator to separately monitor
each HyperFabric adapter on every node in the fabric, in addition to
monitoring the entire HyperFabric subsystem. The monitor can
inform the user if the resource being monitored is UP or DOWN. The
administrator defines the condition to trigger a notification (usually
a change in interface status). Notification can be accomplished with a
SNMP trap, or by logging into a user specified log file with a choice of
severity, or by email to a user defined email address.
For more information on EMS, including instructions for
implementing this feature, see “Configuring the HyperFabric EMS
Monitor” on page 85 in this manual, and the EMS Hardware
Monitors User’s Guide Part Number B6191-90028 September 2001
Edition.
• ServiceGuard: Supported
Within a cluster, ServiceGuard groups application services
(individual HP-UX processes) into packages. In the event of a single
service failure (node or network), EMS provides notification and
ServiceGuard transfers control of the package to another node in the
cluster, allowing services to remain available with minimal
interruption. ServiceGuard using EMS, directly monitors cluster
nodes, LAN interfaces, and services (the individual processes within
an application). ServiceGuard uses a heartbeat LAN to monitor the