Porting
While many applications are initially written
for the IA-32 environment, porting from another UNIX platform to an xSeries
server running Linux or Windows is a most common type of
porting. As well, the commercialization of the IA-64 platform porting applications
currently running on a 32-bit platform to a 64-bit platform is become critical
for continued success. Here we provide information for porting from other
platforms, including some specific material geared for migrating applications
from AIX. We also address the migration of Java applications to the xSeries
platform. As Java is often more portable across platforms, many of the
references below focus on porting C and C++ applications which may encounter
more tricky issues. For special focus on ports to Linux on xSeries, see the xSeries Linux part of this site.
Our porting team has gathered together this set of
resources to help you with porting from other platforms such as Solaris, HP-UX,
AIX, and Compaq Tru64. We also include some resources specifically comparing
AIX 5L and Windows 2000. The UNIX-oriented resources are also generally applicable
to migration of C/C++ or Java applications on the AIX platform to xSeries servers. Many
other reference books, other than those listed here, are available on the IBM Redbooks Web site.
Also, please see the IBM Redbooks Portal for xSeries Web site.
We have divided up the resources into the
following categories:
General Porting Guides
Code samples, porting tools, and documentation
Java solutions
Java
solutions promise cross platform portability. Java is especially dominant in
e-business and WebSphere application ports. We provide the following resources
for Java applications, both general to all IBM eServer platforms and also specific
to the pSeries platform.
Debugging and Performance Tuning
There is also an IBM
tool which is called Capacity Manager (part of IBM
Director) that helps to pinpoint performance issues.
The following third-party tools are available for debugging:
Third-party debugging tools
- Insure++ from ParaSoft.
Insure++ is a comprehensive debugging and code analysis tool. It consists
of a code instrumentation front end that you need to compile your code
with. This tool analyzes your code against a known set
of memory (and other) problems and instruments the code such that
messages for any detected errors show up at runtime. The tool supports
both C and C++.
The types of error/warning messages that show up at runtime can be
customized. The messages can be displayed either in a graphical tool(Insra) or to standard error.
It is also possible to compile the code with IBM's VisualAge C/C++
compiler and then link with Insure++. An application built in this
fashion connects to a graphical tool and memory usage is shown
graphically in time. Memory that is suspected to be leaked is shown in
one color, while allocated and free memory are
shown in other colors. To help locate the source of the leak, the code
has to be compiled and linked with Insure++.
tca is a code coverage analyzer tool that is
part of Insure++. When an application that has been compiled and linked
with insure is executed, it creates log files
that can then be analyzed by tca for code coverage. This is useful tool
during testing when you need to create various metrics for code coverage.
- GreatCircle from Geodesic.
Great Circle® is an advanced debugging environment that diagnoses and
resolves memory problems. It finds errors such as excessive application
memory use and errors that could cause a crash of the application. It is
a fast diagnostic tool that can also profile an application's memory use
in real time and even detect third-party errors.
System Administration
- Implementing IBM Director Management Solutions (SG24-6188-00),
an IBM Redbook with information for administrators looking
at using IBM Director as a solution
- IBM Director Security (REDP0417), an IBM Redpaper with on
security in IBM Director.
- xSeries Systems Management Home
Page, includes IBM Director, Remote Deployment Manager and management
hardware.
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