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Chapter 1Before You Install the SoftwareThis chapter describes the steps that need to be taken before you install the N1 Grid Engine 6 software (grid engine software). This chapter includes the following topics: Plan the InstallationWhether you have installed previous versions of the grid engine software or this is your first time, you will need to do some planning before you extract and install the software. This section describes the decisions you must make, and, wherever possible, gives you criteria on which you can base your decisions. Decisions That You Must MakeYou must make several decisions before you can plan the installation:
Gather the Necessary InformationBefore you install the grid engine software, you must plan how to achieve the results that fit your environment. This section helps you make the decisions that affect the rest of the procedure. Write down your installation plan in a table similar to the following example.
Disk Space RequirementsThe grid engine software directory tree has the following fixed disk space requirements:
The ideal disk space for grid engine system spool directories is as follows:
Note - The spool directories of the master host and of the execution hosts are configurable and need not reside under the default location, sge-root. Note - You must satisfy several Windows-specific prerequisites before you can install N1GE on hosts running Windows as operating system. It might be necessary to install additional software on your computer which might require additional disk space. (See Appendix A). sge-root Installation DirectoryCreate a directory into which you will load the contents of the distribution media. This directory is called the root directory, or sge-root. When the grid engine system is running, this directory stores the current cluster configuration and all other data that must be spooled to disk. Note - It is not a requirement that spool areas reside under sge-root. Actually this location may be avoided for efficiency reasons. Use a valid path name for the directory that is network accessible on all hosts. For example, if the file system is mounted using automounter, set sge-root to /usr/N1GE6, not to /tmp_mnt/usr/N1GE6. Throughout this document, the sge-root variable is used to refer to the installation directory. sge-root is the top level of the grid engine software directory tree. Each grid engine system component in a cell needs read access to the sge-root/cell/common directory, on startup. When grid engine software is installed as a single cluster, the value of cell is default. For ease of installation and administration, this directory should be readable on all hosts on which you intend to run the grid engine software installation procedure. For example, you can select a directory available across a network file system, such as NFS. If you choose to select file systems that are local to the hosts, you must copy the installation directory to each host before you start the installation procedure for the particular machine. See File Access Permissions for a description of required permissions. Directory OrganizationWhen determining the directory organization, you must decide the following:
Note - Because changing the installation directory or the spool directories requires a new installation of the system, use extra care to select a suitable installation directory up front. Note that all important information from a previous installation can be preserved. By default, the installation procedure installs the grid engine software, manuals, spool areas, and the configuration files in a directory hierarchy under the installation directory (see Figure 1-1). If you accept this default behavior, you should install or select a directory with the access permissions that are described in File Access Permissions. You can select the spool areas to put in other locations during the primary installation. See "Configuring Queues" in N1 Grid Engine 6 Administration Guide for instructions. Figure 1-1 Sample Directory Hierarchy ![]() | ||||||||||||||||||||||||||||||||||||||||
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