Planning Volume 2, Control Workstation and Software Environment
New RS/6000 SP systems come with |PSSP 3.4 and AIX 5L 5.1 or AIX
|4.3.3 on installation media. The following sections briefly
describe selected functions in AIX as well as the latest modifications in PSSP
3.4. The AIX features included are only those of significant
general interest or that relate particularly to the PSSP licensed
program. These might help you decide which level of the system you
|AIX 5L Version 5.1 represents the next generation of AIX.
|Fortified with open technologies from some of the world's top providers,
|AIX 5L builds on a solid heritage of supplying integrated, enterprise-class
|support for IBM RS/6000 and pSeries systems. It provides
|an industrial-strength UNIX operating system with increased levels of
|integration, flexibility, and performance for meeting the high demands of
|today's mission-critical applications. It offers an advanced
|operating system with a strong affinity with Linux and built-in capabilities
|designed to accommodate IBM POWER-based nodes.
|AIX 5L 5.1 can run on any of the following POWER-based
- |POWER4 nodes
- |POWER3 nodes
- |IBM Power systems
- |POWER2 systems
- |Personal Computer Power Series 830 and 850 desktop systems
- |PowerPC systems
|That qualifies all the nodes currently available for SP systems, which
|includes any IBM or RS/6000 server supported for running the
|The following are some of the features in AIX 5L 5.1:
- |Full 64-bit kernel, device drivers, and application environment (Not yet
|used by PSSP.)
- |Support for 32-Way Scalability and 256 GB memory
- |New JFS2 l Terabyte file system with 1 Terabyte file size support
- |Workload Manager GUI and functional upgrades
- |Increased network performance for e-business
- |Reliable Scalable Cluster Technology
- |Enhanced RAS and improved serviceability features
- |Web-based System Manager distributed framework
- |Linux-compatible program interface
- |AIX 5L Developer Kit, Java 2 Technology Edition, Version
- |Enhanced ease-of-use capabilities
- |It supports the following licensed programs on POWER nodes in the RS/6000
|SP system or in clustered enterprise server systems:
- |Parallel Systems Support Programs (PSSP)
- |General Parallel File System (GPFS)
- |High-Availability Cluster Multi-Processing (HACMP)
- |High-Availability Geographic Mirror (HAGEO/GeoRM)
- |Engineering Scientific Subroutine Library (ESSL)
- |Parallel ESSL
- |Parallel Environment
|Additional technology is available with Bonus Packs.
|AIX 4.3 has reliability, scalability, application binary
|compatibility across all AIX Version 4 releases, and concurrent 32 and 64-bit
|functionality. The following are some of the newer and relevant
|features in AIX 4.3.3:
- |Support for the latest IBM pSeries systems, RS/6000
|Enterprise Server systems, switches, adapters, and I/O products.
- |Network Authentication Service Version 1.1 -- a network
|authentication protocol based on the IETF RFC 1510 standards protocol for
|The Kerberos V5 Network Authentication Service includes the Generic
|Security Service Application Programming Interfaces (GSS-API) and the key
|distribution center (KDC) server, which allows AIX middleware and external
|application writers to use authenticated message flow between their respective
Additional technology is available with Bonus Packs.
|The PSSP 3.4 licensed program provides enhanced quality and support
|for the enablement of new nodes on which it can operate and the AIX 5L
|5.1 and AIX 4.3.3 operating systems. Functional
|enhancements include new or expanded support in the following areas:
- |The SP Switch2
- |Boot-install from Fibre Channel SAN DASD
- |Secure remote command processing
- |The Low-Level Application Programming Interface
- |IBM Virtual Shared Disk support for Subsystem Device Driver
- |Support for 64-bit applications running with AIX 5L 5.1 on POWER
- |Migration and coexistence support
- |PSSP-related licensed programs
|Support has been added for the following hardware:
- |The IBM pSeries 690 is a high-end 32-way Giga processor
|POWER4 system. The physical components can be assigned to separate
|logical partitions (LPARs) within one physical frame. You can have from
|one to sixteen LPARs. Each LPAR functions as an individual node within
|that frame and each is fully functional like any SP node in the system.
|These nodes require AIX 5L 5.1 or later and PSSP 3.4. The
|p690 is supported as SP-attached or in a clustered enterprise server
|configuration with the SP Switch2, the SP Switch, or no switch.
- |The IBM pSeries 660 models 6H0, 6H1, and 6M1, the
| pSeries 680, and the RS/6000 models H80 and M80 are other
|servers of varied capacities that have been introduced since the release of
|PSSP 3.2. These PCI-based 64-bit SMP systems are supported as
|SP-attached servers or in a system of clustered enterprise servers in a one
|node per frame relationship. They can connect to the SP Switch2 or the
- |Additional node attachment PCI SSA adapters and switch attachment
|See Hardware overview for introduction and links to planning information
|with respect to the software support of new nodes. See the book
|IBM RS/6000 SP: Planning Volume 1, Hardware and Physical
|Environment for hardware planning information. See also Related hardware publications for where to find other hardware publications about IBM
| pSeries servers.
|The PSSP 3.4 software includes the following enhancements for the SP
- |The SP Switch2 supports two different switch configurations so that nodes
|can communicate over one or two switch planes. You can have improved
|communication performance with two switch planes operational, and higher
|availability since one switch plane can continue operating even when you take
|a switch down for maintenance.
- |A two-plane SP Switch2 system has two sets of switches and two adapters
|per node. The switch planes are disjoint - each is cabled exactly
|like a single plane, both with the same topology. Communication across
|the pair of planes is achieved by the PSSP 3.4 software using a data
|striping method and an optional aggregate IP address capability.
- |With the control workstation and all the nodes running the PSSP
|3.4 software, you have optional switch connectivity. This means
|a system using the SP Switch2 can have some nodes that are not connected to
|the switch. This way you can use the SP Switch2 and still keep older
|nodes in your system, but not connected to the switch if they are not
|supported on the SP Switch2.
- |The SP Switch2 supports multiple node switch boards in a frame.
|With PSSP 3.4, you can have up to eight SP Switch2 node switch boards
|in a single SP frame. This is advantageous for installations that
|require a large number of switch connections for SP-attached servers or
|clustered enterprise server configurations. This is a frame configured
|only with SP Switch2 switches.
- |The SP Switch2 can still be configured with one switch plane. Then
|it is like the SP Switch with one adapter per node that is attached to the
|switch network and one switch plane. But it also has the added
|functional benefits, like relaxed node placement rules and optional
- |The SP Switch2 is supported in a system of clustered enterprise
- |The SP Switch2 can be used with any of the nodes currently available from
|IBM. They are listed in Table 9.
|Support has been added to PSSP for boot and NIM installs from Direct Access
|Storage Devices (DASD) attached by Fibre Channel in a Storage Area Network
|(SAN) environment. This support incorporates new function developed in
|system firmware, AIX 5L, AIX, and Fibre Channel adapter firmware to natively
|support Fibre Channel SAN DASD as AIX 5L or AIX installation and boot
|PSSP 3.4 provides the ability to have the PSSP installation,
|configuration, and system management software, hereafter called simply the
|PSSP system management software, use a secure remote command
|process in place of the AIX rsh and rcp
|commands. You can acquire, install, and configure any secure remote
|command software of your choice that conforms to the Internet Engineering Task
|Force (IETF) Secure Shell working group protocol. With the required
|restricted root access option enabled and a secure remote command process
|enabled, the PSSP system management software has no dependency to internally
|issue rsh and rcp commands as a root user from the
|control workstation to nodes, from nodes to nodes, nor from nodes to the
|PSSP 3.4 includes the following enhancements to the performance of
|the LAPI software:
- |The LAPI message packet header has been reduced for greater bandwidth and
|observable better payload.
- |There is a new generic version of the LAPI_Amsend function without
|restrictions on the types of buffers used.
- |There are multiple completion handler threads for better exploitation of
|large SMP systems.
- |The LAPI_Put function has improved latency.
- |LAPI now has 64-bit support.
- |Shared memory support has been added. This provides the ability to
|run LAPI programs without a switch when running on only one SMP
|machine. When running on multiple SMP machines, LAPI shared memory
|support provides faster communication paths between tasks. The LAPI
|shared memory support is user-tunable.
|The IBM Virtual Shared Disk now supports the Subsystem Device Driver (SDD),
|an ESS device driver that provides:
- |Enhanced data availability
- |Automatic path failover and recovery to an alternate path
- |Dynamic load balancing of alternate paths
- |Concurrent microcode upgrade
|PSSP 3.4 provides support for 64-bit parallel applications that use
|MPI or LAPI, and run on POWER nodes with AIX 5L 5.1. This 64-bit
|support is essential for running applications with large virtual memory
|requirements. The full 64-bit kernel, device drivers, and application
|environment is not yet used by PSSP.
|Support is provided for upgrading to PSSP 3.4 running on AIX 5L
|5.1 or AIX 4.3.3.
|Support is provided for the coexistence of earlier, but still supported,
|releases of PSSP and some PSSP-related licensed programs in a system partition
|with PSSP 3.4.
|The following PSSP-related programs have been enhanced:
- |General Parallel File System
- |High Availability Cluster Multi-Processing
- |Parallel Environment
|See the Bibliography for a listing of publications for these PSSP-related
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