CSEP Distribution

Here is the summary how we distribute CSEP software.

INFRASTRUCTURE AND ENVIRONMENT

• Virtual machines required to maintain environment consistency while

 allowing flexibility on hardware specifications.

• We use KVM, but any preferred methods will work.
• Install a VM instance of preferred OS.
• Install necessary dependencies (compilers, libraries, etc).
• Testing codes isolated single directory (ie /usr/local/csep).
• Once codes are developed, clone the VM instance (minus /usr/local/csep)
• Cloned images can now be used for more DEVELopment, CERTification,Operation or other testing centers.
• Codes maintained by either SVN or YUM (rpm).

OUR TYPICAL PROCESS DISTRIBUTING CSEP RELEASE

• Tag release in SVN
• Check out code base from SVN to "development" VM image
• Build RPMs for 'generic' and testing regions specific ('csep-ca', 'csep-wpacific', 'csep-global', 'csep-oceanic', 'csep-eu', 'csep-nz', 'csep-japan') packages for easy installation on VMs.
• CSEP YUM repository is updated with RPMs for the release
• RPMs on "operational" SCEC VM are updated with new release.
• VM images for each testing center (EU, NZ, Japan) are updated with corresponding to the center RPMs
• Permissions of codes are controlled by separate RPM packages or

 subdirectories in SVN.

• RPMs are an extra step but much appreciated by the system admins for

 ease of installation.