Checking The Aix 5L Kernel Mode; Changing From A 32-Bit To A 64-Bit Kernel; Checking And Changing The Smt Setting - IBM IntelliStation POWER 285 Technical Overview And Introduction

Near the end of the installation process, a configuration window opens, requesting you to
enter the current CATIA configuration environment location. Specify the environment path.
The installation process is finished and you are ready to execute CATIA V5 64-bit. To have
the complete CATIA V5 64-bit function, the AIX 5L kernel should be also on 64-bit. In the
following sections, you can check the current AIX 5L environment and also change it to 64-bit.
Note: The 64-bit CATIA V5 will run without an error message even when AIX 5L is running
the 32-bit kernel.

4.1.1 Checking the AIX 5L kernel mode

To take the most advantage of the 64-bit support, install the 64-bit kernel (fileset bos.mp64).
To ensure that the 64-bit kernel is running as expected, follow these steps:
1. Log in as the root user.
2. Enter the bootinfo -K command.
If the kernel is running in 64-bit mode, the output of this command is 64.

4.1.2 Changing from a 32-bit to a 64-bit kernel

If the system is not running the 64-bit kernel, perform the following steps:
1. Log in as the root user.
2. Enter the cd / command.
3. Enter the ln -fs /usr/lib/boot/unix_64 unix command.
4. Enter the cd /usr/lib/boot command.
5. Enter the ln -fs /usr/lib/boot/unix_64 unix command.
6. Enter the bosboot -ad /dev/ipldevice command.
7. Enter the sync;sync;sync commands.
8. Enter the shutdown -Fr command to reboot the 64-bit kernel.

4.2 Checking and changing the SMT setting

The smtctl command controls the enabling and disabling of processor simultaneous
multithreading (SMT) mode.
The syntax is as follows:
smtctl [ -m off | on [ -w boot | now ]]
This command is provided for privileged users and applications to control the use of
processors with simultaneous multithreading support. The simultaneous multithreading mode
allows processors to have thread-level parallelism at the instruction level. This mode can be
enabled or disabled for all processors either immediately or on subsequent boots of the
system. This command controls the simultaneous multithreading options.
The following flags are supported:
-m off
-m on
-w boot
This option sets simultaneous multithreading mode to disabled.
This option sets simultaneous multithreading mode to enabled.
This option makes the simultaneous multithreading mode change
effective on the next and subsequent reboots if you run the bosboot
command before the next system reboot.
Chapter 4. Workstation hints and tips
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