HOWTO: Manage Access Control List (ACLs)
An ACL (access control list) is a list of permissions associated with a file or directory. These permissions allow you to restrict access to a certain file or directory by user or group.
checkgpu Command
Introduction
checkgpu is a command developed at OSC for use on OSC’s systems to report information regarding the usage of OSC’s GPU nodes. It reports various information on the usage and availability of the GPU nodes.
2020 Storage Service Upgrades
In March 2020, OSC expanded the existing project and scratch storage filesystems by 8.6 petabytes. Adding the existing storage capacity at OSC, this brings the total storage capacity of OSC to ~14 petabytes.
OSCprojects
Introduction
OSCprojects is a command developed at OSC for use on OSC's systems and is used to view your logged in accounts project information.
OSCgetent
Introduction
OSCgetent is a command developed at OSC for use on OSC's systems and is similar to the standard getent command. It lets one view group information.
OSCusage
Introduction
OSCusage is command developed at OSC for use on OSC's systems. It allows for a user to see information on their project's current RU balance, including which users and jobs incurred what charges.
Batch Limit Rules
Memory Limit:
It is strongly suggested to consider the available per-core memory when users request OSC resources for their jobs.
Regular Dense Compute Node
On Owens, it equates to 4315MB/core or 118GB/node for the regular dense compute node.
OSCfinger
Introduction
OSCfinger is a command developed at OSC for use on OSC's systems and is similar to the standard finger command. It allows various account information to be viewed.
Migrating jobs from other clusters
This page includes a summary of differences to keep in mind when migrating jobs from other clusters to Pitzer.
HOWTO: IME, Cache & Burst Buffer for Scratch File System
The Owens and Pitzer clusters have access to the DDN Infinite Memory Engine (IME), a fast data tier between the compute nodes and the /fs/scratch file system. IME is a Solid State Disk (SSD) that can act as a cache and burst buffer to improve the performance of the scratch file system.
While some jobs will benefit from using IME, others will not. You need to understand the workflow of IME well, since sometimes it is not very intuitive. Files must be explicitly imported, synchronized and/or purged.
