IBM United States
Hardware Announcement 101-283
October 4, 2001
Preview: IBM Cluster Model 1600 and PSSP Cluster Support of IBM
At a Glance
IBM expands PSSP clustering by offering:
Support for the new IBM pSeries 690
Additional connectivity options with new SP Switch2 attachment adapters
Added IBM pSeries support
RS/6000 Model H80
pSeries 660 Models 6H0 and 6H1
RS/6000 Model M80
pSeries 660 Model 6M1
Support for the AIX 5L for POWER Version 5.1 operating system
Improved switch options
PSSP enhancements to system management in support of additional adapters,
switches, and servers
Improved PSSP clustering software
IBM High-Availability Cluster Multiprocessor (HACMP) software provides a
high-availability operating environment for the pSeries 690
IBM Cluster Model 1600 extends and enhances IBM's
innovative and proven AIX® and RS/6000® SP clustering
Using the new machine type 9078 model 160, the Cluster 1600 includes both
the legacy SP system and new clusters made up of IBM
pSeries servers, including the powerful new pSeries 690.
Expand your RS/6000 SP systems with improved software, new SP Switch2
adapters, and the ability to attach the new pSeries 690 server when
running AIX 5L for POWER V5.1.
Benefits help you:
Manage and reduce costs and administrative overhead
Integrate information management
Reduce complexity in Web Serving
Ease implementation and use
Meet growth demands with continued scalability
You can buy a cluster of mid-range servers, high-end servers, or a mix of
the two. All Cluster 1600 servers are managed by a new release of
Parallel System Support Programs for AIX (PSSP), the same
single-point-of-control software used on the RS/6000 SP.
PSSP cluster configurations continue to expand and evolve present SP
capabilities of high performance server-to-server interconnect and
processor performance to clusters, with the following improvements:
SP Switch2 PCI Attachment Adapter attaches legacy and new PCI-based
servers to the SP Switch2. More pSeries servers can take advantage of
high-performance, high-bandwidth server-to-server communications.
Switch configurations that support two-planes of SP Switch2s are designed
to improve performance and RAS characteristics.
A PSSP cluster configuration is supported whether the cluster includes
the SP Switch, the SP Switch2, or no switch.
Additional configuration and expansion options are supported with the new
software that also runs on the AIX 5L for POWER Version 5.1
Rack-mount multiple SP Switch2s in an SP or expansion frame to improve
efficiencies when more than one SP Switch2 is required for the cluster.
SP customers can expand connectivity options (refer to
RS/6000 SP or stand-alone pSeries servers running AIX V4.3 or AIX 5L for
pSeries 690 requires AIX 5L, and PSSP 3.4 is required on the Control
Workstation (CWS) and specific nodes.
Previews provide insight into IBM plans and direction. Availability,
prices, ordering information, and terms and conditions will be provided
when the product is announced.
All statements regarding IBM's future direction and intent are subject to
change or withdrawal without notice, and represent goals and objective
Planned Availability Dates
Refer to the
Support for the Powerful New pSeries 690
The basic approach is to extend the SP-attached server to support an
attached system as a "logical frame" with each LPAR AIX image represented
as a "logical node."
PSSP 3.4's support of the POWER4 servers includes support for the LPAR
facility of pSeries 690.
PSSP 3.4 supports a maximum of 16 LPARs per server. Additionally only 16
SP Switch2 PCI Attachment Adapters are supported on a single pSeries 690
Each LPAR can have a PCI switch adapter for switch connectivity. If the
system is configured as a two-plane system, each LPAR can have 2 PCI
switch adapters for switch connectivity. In this case, there is still a
limit of 16 PCI adapters, meaning only 8 of the LPARs can have
connectivity to the switch network.
Each LPAR AIX image runs a complete copy of PSSP, and all PSSP services
This support is planned for first half 2002.
Expanded Connectivity Options
With this announcement, you gain the infrastructure necessary to connect
RS/6000 servers (pSeries 680 model S85, RS/6000 model H80, RS/6000 model
M80, pSeries 660 models 6H0 and 6H1, pSeries 660 model 6M1) as SP
attached servers using the SP Switch2 PCI Attachment Adapter into the SP
You can mix switched and non-switched nodes or servers in an SP Switch2
Also supported is the attachment of POWER3 SMP Thin and Wide Nodes, 375
MHz POWER3 SMP Thin and Wide Nodes, and 332 MHz SMP Thin and Wide Nodes
with a new adapter connection to the SP Switch2 fabric by first quarter
AIX 5L for POWER Version 5.1 Support on PSSP Clusters
Improved Clustering Software
PSSP is a comprehensive suite of applications for the installation,
operation, management, and administration of the RS/6000 SP, attached
servers, and PSSP cluster configurations from a single point of control.
PSSP 3.4 is enhanced to enable the additional switches, adapters, and
Parallel Environment for AIX is a high-function development and execution
environment for parallel applications on RS/6000 servers widely used for
Fortran and C/C++ parallel application development and execution.
Parallel Environment for AIX 5L, 3.2 enhances performance, usability,
scaling, and new function for standards compliance. User applications
may run in a 64-bit address space with support for 64-bit MPI and 64-bit
LoadLeveler schedules applications to RS/6000 SP nodes or clusters of
pSeries servers. LoadLeveler supports load balancing for interactive
Parallel Operating Environment sessions, and focuses on parallel job
scheduling and scalability. With LoadLeveler for AIX 5L V3, you benefit
from more control in scheduling and managing jobs.
New in Version 3
System- or user-initiated Parallel Checkpoint/Restart enhances the
checkpoint and restart facility in LoadLeveler and Parallel Environment.
Both LoadLeveler and Parallel Environment exploit the new kernel level
checkpoint function in AIX 5L.
Gang scheduling is a parallel job scheduling algorithm that supports
multiple tightly synchronized parallel applications running and sharing
resources on a same set of nodes.
AIX WorkLoad Manager (WLM) integration provides consistent resource
management across all nodes with the use of the WLM API.
General Parallel File System for AIX (GPFS) provides file system services
to parallel and serial applications running in the AIX Operating
Environment. GPFS provides a single global file system for PSSP clusters
and is ideal for high-performance parallel file transfer and parallel I/O
to single or multiple files into and out of the SP. GPFS 1.5 supports
Fibre Channel attached disks; SANs extend the support to attach FC disks
with switches. The maximum supported file system size is increased to
Engineering and Scientific Subroutine Library (ESSL) is a collection of
mathematical subroutines useful for many different scientific and
technical computing applications. ESSL provides a thread-safe serial
library and an SMP library that support 32-bit and 64-bit applications.
ESSL for AIX 5L, 3.3 includes POWER4 tuning, new LAPACK subroutines, and
support for the AIX 5L 32-bit and 64-bit kernels.
Parallel ESSL is a collection of mathematical subroutines useful for many
different scientific and technical computing message-passing
applications. Parallel ESSL provides a serial library for use with the
PE MPI Signals Library and an SMP library for use with the PE MPI
threaded library. Parallel ESSL for AIX 5L, 2.3 provides
64-bit application support in the SMP library and new ScaLAPACK
HACMP is designed to give you application availability by detecting
system or network failures and managing fallover to a recovery processor
with a minimal loss of end-user time. HACMP makes use of redundant
hardware in the cluster to keep your application running, restarting it
on a backup processor if necessary. HACMP clusters can be configured to
meet complicated application availability and recovery needs, maximizing
application throughput and investments in hardware and software. HACMP
4.4.1 adds support for pSeries 690 and support of the AIX 5L 64-bit
Parallel Environment, LoadLeveler, ESSL, and Parallel ESSL support AIX
5L only. AIX 4.3 support is not provided in the new levels of these
Refer to Hardware Announcement
, dated October 4, 2001.
IBM Global Financing offers attractive financing to credit-qualified
commercial and government customers and Business Partners in more than 40
countries. IBM Global Financing is provided by the IBM Credit
Corporation in the United States. Offerings, rates, terms, and
availability may vary by country. Contact your local IBM Global
Financing organization. Country organizations are listed on the Web at:
Planned Availability Dates
Software Support for AIX 5L: Year-end 2001
New SP Switch2 PCI Attachment Adapter: Year-end 2001
Support for up to 2 SP Switch2 PCI Attachment Adapters in a server:
New Switch Packaging Options and Configurations: Year-end 2001
HACMP 4.4.1 Support on pSeries 690: First quarter 2002
HACMP 4.4.1 Support of 64-bit Kernel: First quarter 2002
LoadLeveler® Checkpoint/Restart: First half 2002
PSSP Cluster Support for pSeries 690: First half 2002
The RS/6000 SP and PSSP clusters are designed for large enterprises in
financial services, manufacturing, government, telecommunications, retail
or wholesale distributors, transportation, and healthcare. Through
clustering of AIX servers, these customers are able to improve the
availability of data and applications, lower the cost and improve the
efficiency of multi-systems management, and ensure that applications,
users or transactions can be scaled easily to meet the dynamic
requirements of today's e-businesses.
PSSP clusters are also designed for the world's most demanding
applications in high-performance computing. Clusters of the new
POWER4-based IBM pSeries 690 will provide the extreme floating-point
performance and I/O bandwidth needed by these MPI-based parallel
These pSeries cluster offerings include the legacy RS/6000 SP System and
clusters comprised of RS/6000 M80 or pSeries 6H0, 6H1, 6M1, 680, or 690
servers. Benefits include cost effective management of your IT
infrastructure; anytime, anywhere access to business critical data and
applications; IT infrastructure adaptability to meet the ever changing
demands of your business; extreme scalability (terabytes of data,
billions of Web transactions, trillions of floating point operations);
and investment protection through the coexistence of old and new
pSeries is a trademark of International Business Machines Corporation.
The e-business logo and SP are trademarks of International Business
Machines Corporation in the United States or other countries or both.
AIX, RS/6000, and LoadLeveler are registered trademarks of International
Business Machines Corporation in the United States or other countries or
Other company, product, and service names may be trademarks or service
marks of others.
Most product media is shipped only via Customized Offerings (for example,
CBPDO, ServerPac, Systempac®). Non-customized items (CDs, diskettes,
source media, media kits) will continue to be shipped via the stand-alone
Systempac is a registered trademark of International Business Machines
Corporation in the United States or other countries or both.
Other company, product, and service names may be trademarks or service
marks of others.