124 lines
8.1 KiB
HTML
124 lines
8.1 KiB
HTML
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<?xml version="1.0" encoding="UTF-8"?>
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PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html lang="en-us" xml:lang="en-us">
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<meta name="DC.Type" content="concept" />
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<meta name="DC.Title" content="What is i5/OS PASE?" />
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<meta name="abstract" content="i5/OS PASE is an integrated runtime environment for AIX applications running on i5/OS." />
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<meta name="description" content="i5/OS PASE is an integrated runtime environment for AIX applications running on i5/OS." />
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<meta name="DC.Relation" scheme="URI" content="../rzalc/pase.htm" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 2000, 2006" />
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<!-- All rights reserved. Licensed Materials Property of IBM -->
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<link rel="stylesheet" type="text/css" href="./ic.css" />
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<title>What is i5/OS PASE?</title>
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</head>
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<body id="rzalfwhatispase"><a name="rzalfwhatispase"><!-- --></a>
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<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
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<h1 class="topictitle1">What is <span class="keyword">i5/OS</span> PASE?</h1>
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<div><p><span class="keyword">i5/OS™</span> PASE is
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an integrated runtime environment for AIX<sup>®</sup> applications running on <span class="keyword">i5/OS</span>.</p>
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<p> It supports the application binary interface (ABI) of AIX,
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and provides a broad subset of the support provided by AIX shared libraries, shells, and utilities. <span class="keyword">i5/OS</span> PASE supports the direct processing
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of IBM<sup>®</sup> PowerPC<sup>®</sup> machine
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instructions, so it does not have the drawbacks of an environment that only
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emulates the machine instructions.</p>
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<p><span class="keyword">i5/OS</span> PASE applications:</p>
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<ul><li>Can be written in C, C++, Fortran, or PowerPC assembler</li>
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<li>Use the same binary executable format as AIX PowerPC applications</li>
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<li>Run in an <span class="keyword">i5/OS</span> job</li>
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<li>Use <span class="keyword">i5/OS</span> system functions,
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such as file systems, security, and sockets </li>
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</ul>
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<p>Keep in mind that <span class="keyword">i5/OS</span> PASE
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is not a UNIX<sup>®</sup> operating
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system on <span class="keyword">i5/OS</span>. <span class="keyword">i5/OS</span> PASE is designed to run AIX programs
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on <span class="keyword">i5/OS</span> with little or
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no change. Programs from any other environment, such as AIX or Linux<sup>®</sup>, need to
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be written such that they can be compiled on AIX as the first step toward running in <span class="keyword">i5/OS</span> PASE. </p>
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<p>The <span class="keyword">i5/OS</span> PASE integrated
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run time runs on the Licensed Internal Code kernel on the iSeries™ server.
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The system provides integration of many common <span class="keyword">i5/OS</span> functions
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across <span class="keyword">i5/OS</span> PASE and other
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runtime environments (including ILE and Java™). <span class="keyword">i5/OS</span> PASE
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implements a broad subset of AIX system calls. System support for <span class="keyword">i5/OS</span> PASE
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enforces system security and integrity by controlling what memory an <span class="keyword">i5/OS</span> PASE program can access and
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restricting it to use only unprivileged machine instructions.</p>
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<div class="section"><h4 class="sectiontitle">Rapid application deployment with minimal effort</h4><p>In
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many cases, your AIX programs can run in <span class="keyword">i5/OS</span> PASE
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with little or no change. The level of AIX programming skills you need varies depending
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on the design of your AIX program. In addition, by providing additional <span class="keyword">i5/OS</span> application integration in
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your program design (for instance, with CL commands), you can minimize configuration
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concerns for your application users.</p>
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<p><span class="keyword">i5/OS</span> PASE
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adds another porting option for solution developers who want to share in the
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success of the <span class="keyword">i5/OS</span> marketplace.
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By providing a means to cut porting time significantly, <span class="keyword">i5/OS</span> PASE
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can improve the time to market and return on investment for solutions developers.</p>
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</div>
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<div class="section"><h4 class="sectiontitle">A broad subset of AIX technology on <span class="keyword">i5/OS</span></h4><p><span class="keyword">i5/OS</span> PASE implements an application
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run time that is based on a broad subset of AIX technology, including:</p>
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<ul><li>Standard C and C++ run time (both threadsafe and non-threadsafe)</li>
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<li>Fortran run time (both threadsafe and non-threadsafe)</li>
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<li><tt>pthreads</tt> threading package</li>
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<li><tt>iconv</tt> services for data conversion</li>
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<li>Berkeley Software Distributions (BSD) equivalent support</li>
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<li>X Window System client support with Motif widget set</li>
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<li>Pseudo terminal (PTY) support</li>
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</ul>
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<p>Applications are developed and compiled on an AIX workstation running a level of AIX that is compatible
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with a level supported by <span class="keyword">i5/OS</span> PASE,
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and then run on <span class="keyword">i5/OS</span>.</p>
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<p>Alternatively,
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you can install one of the supported compiler products in the <span class="keyword">i5/OS</span> PASE
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environment to develop, compile, build, and run your applications completely
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within <span class="keyword">i5/OS</span> PASE.</p>
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<p><span class="keyword">i5/OS</span> PASE also includes the Korn,
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Bourne, and C shells and nearly 200 utilities that provide a powerful scripting
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environment.</p>
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<p><span class="keyword">i5/OS</span> PASE
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uses IBM investment
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in a common processor technology for the AIX and <span class="keyword">i5/OS</span> operating
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systems. The PowerPC processor
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switches from <span class="keyword">i5/OS</span> mode
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into AIX mode
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to run an application in the <span class="keyword">i5/OS</span> PASE
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run time.</p>
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<p>Applications running in <span class="keyword">i5/OS</span> PASE
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are integrated with the <span class="keyword">i5/OS</span> integrated
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file system and DB2
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Universal Database™ for iSeries. They can call (and be called by) Java and Integrated
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Language Environment<sup>®</sup> (ILE) applications. In general, they can take advantage
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of all aspects of the <span class="keyword">i5/OS</span> operations
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environment, such as security, message handling, communication, and backup
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and recovery. At the same time, they take advantage of application interfaces
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that are derived from AIX interfaces.</p>
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</div>
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</div>
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<div>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="rzalfgetstart.htm" title="i5/OS Portable Application Solutions Environment (i5/OS PASE) enables you to run many of your AIX application binaries on i5/OS with little or no change, and effectively expands your platform solution portfolio.">Get started with i5/OS PASE</a></div>
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</div>
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<div class="relref"><strong>Related reference</strong><br />
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<div><a href="rzalfcompileaix.htm" title="You can install one of the AIX compiler products that support installation in i5/OS PASE to compile your programs in the i5/OS PASE environment.">Compile your AIX source</a></div>
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</div>
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<div class="relinfo"><strong>Related information</strong><br />
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<div><a href="../rzalc/pase.htm">i5/OS PASE shells and utilities</a></div>
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</div>
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</div>
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</body>
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</html>
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