User Environment

User processes running on the farm lose the environment in which they were submitted. When a user process begins running on the farm, the only environment that the process has is:

• FBS_JOB_SIZE: Number of user processes in the section.
• FBS_PROC_NO: logical_pid of the process.
• FBS_JOB_ID: The FBSNG job id.
• FBS_SECTION_NAME: The FBSNG section name.
• FBS_HOSTS: A list of nodes assigned to this job.
• FBS_SCRATCH: Temporary directory created for the process on one of local scratch disks. This directory with its contents will be automatically deleted after the process exits.
• FBS_PROC_STDOUT: Specifies the pathname where the process' stdout will be written to.
• FBS_PROC_STDERR: Specifies the pathname where the process' stderr will be written to.
• FBS_PROC_POOLS: Mapping between resource pool names which were requested for the process and names of actual resources allocated.
• FBS_SECT_POOLS: Mapping between resource pool names which were requested for the section and names of actual resources allocated.
• FBS_SCRATCH_requested_resource_name: if a scratch disk space was allocated through a resource or a resource pool, this environment variable will point to corresponding disk area. For example, if the user requested certain amount of a resource from pool "disk", and actual disk space was allocated on the disk "disk3", then the environment variable FBS_SCRATCH_scratch will point to the temporary directory created on the "disk3" disk and the value of FBS_PROC_POOLS will contain "disk:disk3".

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