FSL
FSL is a library of tools for analyzing FMRI, MRI and DTI brain imaging data.
Availability and Restrictions
Versions
The following versions of FSL are available on OSC clusters:
Pitzer
HOWTO: Submit Homework to Repository at OSC
This page outlines a way a professor can set up a file submission system at OSC for his/her classroom project.
Usage for Professor
After connecting to OSC system, professor runs submit_prepare as
VirtualGL
VirtualGL allows OpenGL applications to run with 3D hardware accerlation.
Availability & Restrictions
Versions
The following versions of VirtualGL are available on OSC clusters:
Julia
From julialang.org:
"Julia is a high-level, high-performance dynamic programming language for numerical computing. It provides a sophisticated compiler, distributed parallel execution, numerical accuracy, and an extensive mathematical function library. Julia’s Base library, largely written in Julia itself, also integrates mature, best-of-breed open source C and Fortran libraries for linear algebra, random number generation, signal processing, and string processing. In addition, the Julia developer community is contributing a number of external packages through Julia’s built-in package manager at a rapid pace. IJulia, a collaboration between the Jupyter and Julia communities, provides a powerful browser-based graphical notebook interface to Julia."
Proposed OSC Policies for Public Comments
This page lists all proposed OSC policies for public comments. Your comments help inform our policies and are encouraged. We will provide the response to comments on this webpage after the public comment period closes. Please submit your comments via our online form by the deadline.
Currently Open for Public Comment:
Overview of File Systems
OSC has several different file systems where you can create files and directories. The characteristics of those systems and the policies associated with them determine their suitability for any particular purpose. This section describes the characteristics and policies that you should take into consideration in selecting a file system to use.
The various file systems are described in subsequent sections.
HOWTO: Use NFSv4 ACL
This document shows you how to use the NFSv4 ACL permissions system. 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 certian file or directory by user or group. NFSv4 ACLs provide more specific options than typical POSIX read/write/execute permissions used in most systems.
These commands are useful for managing ACLs in the dir locations of /users/<project-code>.
Understanding NFSv4 ACL
This is an example of an NFSv4 ACL
HOWTO: Reduce Disk Space Usage
This HOWTO will demonstrate how to lower ones' disk space usage. The following procedures can be applied to all of OSC's file systems.
We recommend users regularly check their data usage and clean out old data that is no longer needed.
Users who need assistance lowering their data usage can contact OSC Help.
Darshan
Darshan is a lightweight "scalable HPC I/O characterization tool
Availability and Restrictions
Versions
The following versions of Darshan are available on OSC clusters:
Changes of Default Memory Limits
Problem Description
Our current GPFS file system is a distributed process with significant interactions between the clients. As the compute nodes being GPFS flle system clients, a certain amount of memory of each node needs to be reserved for these interactions. As a result, the maximum physical memory of each node allowed to be used by users' jobs is reduced, in order to keep the healthy performance of the file system. In addition, using swap memory is not allowed.
The table below summarizes the maximum physical memory allowed for each type of nodes on our systems:
