HP HyperFabric manual Features, OnLine Addition and Replacement Olar

Planning the Fabric

Hyper Messaging Protocol (HMP)

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

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