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Purify

Introduction / Philosophy

Installation of Purify under /software is straighforward. You are referred to the installation documentation. This page details only some points of which to be aware.

  • Purify has a 10000 user license, and as such is installed on several /software servers without regard to tallying of licenses.
  • Symbolic links to the actual executables should be made on the corresponding /usr/server servers in order to add the real Purify path to users' PATHs without. This is important since VLT users already have a PATH that is very long, and lengthening it will break the shell (word too long).
  • The software is installed in a read-only environment (/software and /usr/server is mounted read-only). The installation documentation is a little unclear on the repercussions of this. But it comes down to the following two points. 
  • Firstly a symbolic link for redirecting the cache off the read-only filesystem must be put into the installation directory. The link redirects to /var/tmp/pure-cache and it is then up to each NFS client as to whether this is further redirected to where more space is available or whether it is a real directory.
  • The license system expects to be able to write information to a file as each user starts up a purify product. Fortunately, if the software cannot do this, then it writes (unsharable and therefore useless) license usage info into a dot file in the user's home directory.

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