Maximum Number Of Processes; Number Of Licensed Users; Output Of A Successful Ping - IBM RS/6000 SP Problem Determination Manual

Figure 11. Output of a Successful Ping
It is important to plan the IP addressing scheme and hostnames before starting,
because changing them later after configuring your network could become a
major problem. There are procedures to change IP addresses and hostnames if
required, but this adds extra steps and complications, in some cases. Refer to
Appendix C, "IP Address and Hostname Changes for the SP" on page 273 for a
procedure to change IP addresses or hostnames for the SP nodes and Control
Workstation after initial installation and configuration. This procedure has been
tested in the lab environment based on the /etc/hosts file for name resolution.
This procedure has not been tested in other environments.

2.2.6 Maximum Number of Processes

As the AIX 4.1 default, the maximum number of processes allowed per user is
limited to 40. (This limit does not apply to a root user.) The possible values
range from 40 to 131072. Any increase in this number will take effect
immediately. Any decrease in this number will not become effective until the
next system boot.
Installing your RS/6000 SP system as a root user means that your system will
not affected by this limit. However, it is a good idea to increase this value,
based on your application requirements now, to cater to later requirements.
This will ensure that non-root users running various applications later during
production environment will not be limited by the default limit of 40 processes
per user.
As an example, the following command changes the maximum number of
processes allowed per user to 256. (Remember, this value needs to be set up to
cater to your environment.)
# chdev -l sys0 -a maxuproc='256'

2.2.7 Number of Licensed Users

Check and rectify the number of licenses that you have bought for AIX 4.1 from
IBM. By default, you will have two users licensed on your Control Workstation.
Any changes will be effective after system reboot. Use smit fastpath smit
chlicense or command line syntax:.
The following example shows how you can change the number of licensed users
to 64. This is only an example, and the actual value depends on what you have
bought from IBM.
# chlicense -u' 6 4 '
14
SP PD Guide
/> ping 9.12.20.99 -c 1
PING 9.12.20.99: (9.12.20.99): 0 data bytes
8 bytes from 9.12.20.99: icmp_seq=0 ttl=255
----9.12.20.99 PING Statistics----
1 packets transmitted, 1 packets received, 0% packet loss
This soft copy for use by IBM employees only.