Support for Memory
Support for Memory
Support for Memory
Support for Memory
Channel API
Channel API
Channel API
Channel API
TruCluster Server provides a special application programming interface (API) library for high-performance data delivery over
Memory Channel by giving access to Memory Channel data transfer and locking functions. This Memory Channel API
library enables highly optimized applications that require high-performance data delivery over the Memory Channel
interconnect. This library is supported solely for use with Memory Channel.
High performance within the cluster is achieved by providing user applications with direct access to the capabilities of the
Memory Channel. For example, a single store instruction on the sending host is sufficient for the data to become available
for reading in the memory of another host.
The Memory Channel API library allows a programmer to create and control access to regions of the clusterwide address
space by specifying UNIX style protections. Access to shared data can be synchronized using Memory Channel spin locks for
clusterwide locking.
The Memory Channel API library facilitates highly optimized implementations of Parallel Virtual Machine (PVM), Message
Passing Interface (MPI), and High Performance Fortran (HPF), providing seamless scalability from SMP systems to clusters of
SMP machines. This provides the programmer with comprehensive access to the current and emerging de facto standard
software development tools for parallel applications while supporting portability of existing applications without source
code changes.
NOTE:
NOTE:
NOTE:
NOTE: To users of the Memory Channel API V1.6 product on Tru64 UNIX Version 4.0*:
On Tru64 UNIX V5.*, the TruCluster Memory Channel Software V1.6 product is bundled as a feature of TruCluster Server
V5.*. To run the Memory Channel API library on Tru64 UNIX Version 5.1B-1, you must install a TruCluster Server license to
configure a valid TruCluster Server cluster.
NOTE:
NOTE:
NOTE:
NOTE: To users of the Memory Channel application programming interface with Memory Channel virtual hub (vhub)
configuration:
The Memory Channel API is not supported for data transfers larger than 8K bytes when loopback mode is enabled in two
member clusters configured with MC virtual hub. For more information on loopback mode go to
http://www.tru64unix.hp.com/docs/updates/TCR51A/TITLE.HTM
and refer to the 21.Mar.2002 issue titled "MC API
Applications May Not Use Transfers Larger Than 8 KB with Loopback Mode Enabled on Clusters Utilizing Virtual Hubs."
Connection Manager
Connection Manager
Connection Manager
Connection Manager
The connection manager is a distributed kernel component that ensures that cluster members communicate with each other
and enforces the rules of cluster membership. The connection manager forms a cluster, and adds and removes cluster
members. It tracks whether members in a cluster are active and maintains a cluster membership list that is consistent on all
cluster members.
Support for Fibre Channel
Support for Fibre Channel
Support for Fibre Channel
Support for Fibre Channel
Solutions
Solutions
Solutions
Solutions
TruCluster Server supports the use of switched Fibre Channel storage and Fibre Channel arbitrated loop. Compared to
parallel SCSI storage, Fibre Channel provides superior performance, greater scalability, higher reliability and availability,
and better serviceability. Compared to parallel SCSI storage, Fibre Channel is easier to configure and its long distance
permits greater flexibility in configurations. Fibre Channel can be used for clusterwide shared storage, cluster file systems,
swap partitions, and boot disks.
Compared with a switched Fibre Channel topology, arbitrated loop offers a lower cost solution by trading off bandwidth,
and therefore some performance. Arbitrated loop is supported for two-member configurations only.
For more information on supported TruCluster Server configurations and specific cabling restrictions using Fibre Channel,
see the
Cluster Hardware Configuration
manual at the following URL:
http://tru64unix.compaq.com/docs/pub_page/cluster_list.html
Enhanced Security with
Enhanced Security with
Enhanced Security with
Enhanced Security with
Distributed
Distributed
Distributed
Distributed
Authentication
Authentication
Authentication
Authentication
TruCluster Server supports the Enhanced Security option on all cluster members. This includes support for features for
enhanced login checks and password management. Audit and access control list (ACL) support can also be enabled
independently of the Enhanced Security option on cluster members.
QuickSpecs
HP TruCluster Server V5.1B-1
HP TruCluster Server V5.1B-1
HP TruCluster Server V5.1B-1
HP TruCluster Server V5.1B-1
Features - TruCluster Server V5.1B-1
DA - 11444 Worldwide — Version 4 — December 8, 2003
Page 6