HP XC System 3.x Software - Manual (Page 22)

Be aware of the following information about the HP XC file system layout:
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Open source software that by default would be installed under the /usr/local directory is instead
installed in the /opt/hptc directory.
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Software installed in the /opt/hptc directory is not intended to be updated by users.
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Software packages are installed in directories under the /opt/hptc directory under their own names.
The exception to this is third-party software, which usually goes in /opt/r.
•
Four directories under the /opt/hptc directory contain symbolic links to files included in the packages:
/opt/hptc/bin
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•
/opt/hptc/sbin
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/opt/hptc/lib
•
/opt/hptc/man
Each package directory should have a directory corresponding to each of these directories in which
every file has a symbolic link created in the /opt/hptc/ directory.
System Interconnect Network
The HP XC system interconnect provides high-speed connectivity for parallel applications. The system
interconnect network provides a high-speed communications path used primarily for user file service and for
communications within user applications that are distributed among nodes of the system. The system
interconnect network is a private network within the HP XC. Typically, every node in the HP XC is connected
to the system interconnect.
Table 1-2 indicates the types of system interconnects that are used on HP XC systems.
Table 1-2 HP XC System Interconnects
CP6000 CP4000 CP3000
X X Quadrics QSNet II®
X X Myrinet®
X X X Gigabit Ethernet®
X X X InfiniBand®
Additional information on supported system interconnects is provided in the HP XC Hardware Preparation
Guide.
Network Address Translation (NAT)
The HP XC system uses Network Address Translation (NAT) to enable nodes in the HP XC system that do
not have direct external network connections to open outbound network connections to external network
resources.
Determining System Configuration Information
You can determine various system configuration parameters with a few commands:
HP XC System Software Version Use the following command to display the version of the HP XC System
Software:
cat /etc/hptc-release
Kernel Version Use the following command to display the version of the kernel:
uname -r
cat /proc/version
RPMs Use the following command to display the RPMs:
rpm -qa
Memory Use the following command to display the amount of free and used
memory in megabytes:
22 Overview of the User Environment