www.ibm.com: IBM Instructions for downloading packages from z/OS USS tools pages

www.ibm.com: IBM Instructions for downloading packages from z/OS USS tools pages
How to get the package There are three ways to get a package: Through your browser Anonymous ftp If all else fails, For tools packages, send a note to Bill Schoen ( wjs@us.ibm.com) letting him know what problems you had and he’ll be happy to email the package to you. For PDF files (such as presentations), send a note to Henry Gorbsky ( gorbsky@us.ibm.com) letting him know what problems you had and he’ll be happy to email the file to you. We also have some general information on handling a tools package after it has been downloaded.

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Rocket Software

Rocket Software
Rocket Ported Tools for z/OS is a set of products available to you that is designed to deliver tools and applications for the z/OS platform. These applications have been modified to operate within the z/OS environment. Rocket Ported Tools Rocket Ported Tools for z/OS are only supported on z/OS 1.10 and above.

MQTT: MQ Telemetry Transport. It is a publish/subscribe, extremely simple and lightweight messaging protocol, designed for constrained devices and low-bandwidth, high-latency or unreliable networks

MQTT: MQ Telemetry Transport. It is a publish/subscribe, extremely simple and lightweight messaging protocol, designed for constrained devices and low-bandwidth, high-latency or unreliable networks
MQTT is a machine-to-machine (M2M)/”Internet of Things” connectivity protocol. It was designed as an extremely lightweight publish/subscribe messaging transport. It is useful for connections with remote locations where a small code footprint is required and/or network bandwidth is at a premium. For example, it has been used in sensors communicating to a broker via satellite link, over occasional dial-up connections with healthcare providers, and in a range of home automation and small device scenarios. It is also ideal for mobile applications because of its small size, low power usage, minimised data packets, and efficient distribution of information to one or many receivers

Mantissa Corporation: 32bit Intel on IBM mainframe

Mantissa Corporation: 32bit Intel on IBM mainframe
Q. What level of hardware is required for x86VM? A. An IBM System zEnterprise class server. At minimum a z114 or z196 or higher level. Q. What operating systems can I run on z86VM? A. At this point, only Linux has been successfully tested. We’re working to enable additional systems. Q. When will Windows be certified? A. That’s a two step process. First we have to complete our own testing. Then we need to submit our test results to Microsoft for review. We hope that will be quick. When that Beta is ready, customer experience will help. Q. When will 64 bit support be completed? A. We believe there is sufficient function and performance in our 32 bit capabilities. We’ll see how well that is accepted before we make any commitment to 64 bit.

Hubert Kleinmanns / Consulting

Hubert Kleinmanns / Consulting
Wir beraten Sie zu zu allen Themen rund um WebSphere MQ. Aus den vielfältigen Möglichkeiten, die WebSphere MQ bietet, werden Lösungsvorschläge erarbeitet und individuell auf die Kundenbedürfnisse abgestimmt. Ziel ist es, die bestmöglichen zu den Kundenanforderungen passenden Ergebnisse aus WebSphere MQ herauszuholen. Bestehende WebSphere MQ-Installationen können analysiert und bewertet werden. Bereits bekannte sowie möglicherweise noch unentdeckte Probleme im Betriebsablauf werden untersucht und Lösungsvorschläge erarbeitet.

On DB2 and Table-Pinning by Robert Catterall

On DB2 and Table-Pinning by Robert Catterall
In some non-DB2 DBMS environments, a table that is to be pinned in memory must be explicitly marked as such. With DB2, this is not the case.

How do I pin a DB2 table in memory? Easy – I just assign it to a buffer pool that has enough buffers to hold all the table’s pages. Here’s a very simple example: I have a DB2 table, called XYZ, that occupies 1000 4K pages (the page size doesn’t matter – could be 4K pages, 8K, 16K, whatever). I want to pin this table in memory. I set up buffer pool BP8 (the actual buffer pool name doesn’t matter) with 1000 4K buffers.

Dongarra+Hinds: Unrolling Loops in FORTRAN

Dongarra+Hinds: Unrolling Loops in FORTRAN
The technique of ‘unrolling’ to improve the performance of short program loops withoutresorting to assembly language coding is discussed. A comparison of the benefits of loop

‘unrolling‘ on a variety of computers using an assortment of FORTRAN compilers is

presented.

KEY WORDS Unrolled loops FORTRAN Loop efficiency Loop doubling

INTRODUCTION

It is frequently observed that the bulk of the central processor time for a program is

localized in 3 per cent of the source code.6 Often the critical code from the timing perspective

consists of one (or a few) short inner loops typified, for instance, by the scalar product of

two vectors. A simple technique for the optimization of such loops, with consequent

improvement in overall execution time, should then be most welcome. ‘Loop unrolling’ (a

generalization of ‘loop d~ubling’),~ applied selectively to time-consuming loops, is just

such a technique.