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Benefits, requirements, limitations, and known issues for Rational Software Architect products running as 64-bit applications starting from v8.0.3

Product Documentation


Abstract

Starting from version 8.0.3, Rational Sofware Architect products can be installed as 64-bit applications on supported 64-bit operating systems. This document provides information in relation to benefits, requirements, known limitations, and links to known problems related to working with these products running in 64-bit mode.

Content



Benefits of 64-bit installation
  • Extends heap size
  • Ability to manage larger models

32-bit vs. 64-bit Comparisons (RSA = Rational Software Architect)

Ability to create and work with larger models

Product & Machine
Heap setting
# Elements
# Packages
# Diagrams
RSA v8.0.x 32-bit
8 GB RAM
-Xmx2000m
135200
16900
101400
RSA v8.0.x 64-bit
8 GB RAM
-Xmx4000m
396800
49600
297600

Compare/merge (large model comparisons)

Product & Machine
Heap setting
15 MB model file
168,508 classes + 169 packages
20 MB model file
224,284 classes + 225 packages
90 MB model file
1,005,084 classes + 1006 packages
RSA v8.0.x 32-bit
8 GB RAM
-Xmx1500m
Success
Head sis: 1.481GB
Out of Memory
Out of Memory
RSA v8.0.x 64-bit
8 GB RAM
-Xmx8000m*
Success
Head sis: 1.481GB
Success
Head sis: 1.481GB
Success
Head sis: 1.481GB

*NOTE, not all 8GB is available due to system requirements (e.g., OS)

Web publish (Successfully published a large model (235 MB file, 700 MB heap space to load, 1,800+ packages, 100,000 first class elements and 10,000 diagrams) using the RSA 64-bit offering)

Product & Machine
Heap setting
Result
RSA v8.0.x 32-bit
8 GB RAM
-Xmx1024m
Out of Memory
RSA v8.0.x 64-bit
8 GB RAM
-Xmx6448m
Successfully generated 2.8Gb of output:
    • 1.3GB of XML in 1.820 files
    • An 80MB json file defining the tree display
    • 1GB of HTML in over 100,000 files

Rational Rose model import: Able to successfully import 100MB, 450MB, 670MB test models in non-incremental mode using the 64-bit offering while the 32-bit offering could only load the 100MB model.*

*NOTE, all models can be opened in RSA 32-bit mode using incremental load.

Requirements

Action
Requirement(s)
Installation

By default: Architecture Selection is "32-bit"

Note:
Recommended hardware
configuration
Minimum 8 GB RAM with minimum 4 GB Heap

Note: -Xcompressedrefs (IBM VM) or -XX:+UseCompressedOops (Sun) flag, may optimize memory usage for 64-bit machines with less than 32GB


Limitations


Limitation(s)
Operating system
64-bit Installation not supported on Solaris
Product features not supported in 64-bit install
  • DoDAF 1.0 Reporting - Ability to generate an Microsoft Word document (reporting) is not supported.
  • Rational Rose model import: - When Rational Rose model uses stereotypes & properties and Rational Rose not installed on the same machine.
    Work-around: Export entries from registry to *.reg file and supply to importer.
  • Java Visual Editor
Integrations
Supported when shell-sharing:
  • Rational Desktop Connection Toolkit for Cloud v1.0.3
  • WebSphere Application Server Test Environment (32-bit), v6.1.0.37, v7.0.0.17, v8.0

Supported as co-installs, only:
  • InfoSphere Data Architect
  • Rational Business Developer
  • Rational Developer for System z
  • Rational Functional Tester
  • Rational PerformanceTester
  • Rational Requirements Composer
  • Rational Rose
  • Rational System Architect
  • Rational Tau
  • WebSphere Business Modeler
  • WebSphere Integration Developer

Integrations not supported with 64-bit Install:
  • Rational Asset Manager
  • Rational Build Forge
  • Rational ClearCase (base)
  • Rational ClearQuest
  • Rational Requisite Pro
  • Rational SoDA (32-bit install on 64-bit architecture is not supported either)
  • Rational Team Concert
WebSphere Application Server
  • You can install the WebSphere Application Server test environment extensions into the installation location. However, the test environment extensions will be 32-bit versions.
  • Some product features might not be available
Web browsers
 Internet Explorer v8.0 is not supported with 64-bit install.
Internet Explorer v9.0 or higher is supported.

Known issues

Co-installing vs shell-sharing

Co-install means two or more products are installed on the same machine, but into different package groups (each product functions independently).

Shell-share means two or more products are installed on the same machine in the same package groups. When starting one of the products, the functionality in other products will also be available.

]Known issues[

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Document Information

Modified date:
10 September 2020

UID

swg27021665

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