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The process of installing PBS Pro on Cray systems no longer utilizes the INSTALL script as it had in previous versions. The new installation method uses the RPM file directly, together with a set of instructions to configure the software under Cray CLE 5.2 and older versions. The process of installing PBS Pro under CLE 6.0 and newer is beyond the scope of this document and will be covered in a separate design document. It should also be noted that the practice of installing multiple versions of PBS Pro in different directories and using a symbolic link to indicate the "active" version has been discontinued. The new packaging and installation process makes PBS Pro more consistent with mainstream practices utilized by other Linux software.
Note: The RFE does not require what has traditionally been referred to as a migration upgrade. This design focuses on overlay upgrade procedures, as are common with RPM based packages.
Interface 1:
- Visibility: Public
- Change Control: Stable
- Synopsis: Default installation directory is /opt/pbs
- Details: The default installation directory used to be /opt/pbs/<VERSION> where <VERSION> was the current version of PBS Pro. A symbolic link named /opt/pbs/default was then created to point to the directory of the current release. This is no longer the case, and the default directory for PBS Pro shall be /opt/pbs on Cray systems as it is on other supported non-Windows platforms.
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Interface 8:
- Visibility: Public
- Change Control: Stable
- Synopsis: Notification message when PBS_EXEC has moved
- Details: When PBS is installed on a system where the location of PBS_EXEC has changed, the following message is printed to the terminal:
*** =======*** NOTICE:*** =======*** PBS Pro commands have moved.*** Old location: /opt/pbs/default*** New location: /opt/pbs*** Users will need to ensure their PATH and MANPATH are set correctly.*** In most cases, users must simply logout and log back in to source*** the new files in /etc/profile.d.
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