Oakley

Desktop App Catalog

OSC OnDemand provides access to applications on compute nodes through the batch system, without the hassle or performance problems associated with X11 forwarding. To access one, please select an application under "Interactive HPC" from the "Desktop Apps" menu. For more information on each product, please go to its page provided below.

HOWTO: Use NFSv4 ACL

This document shows you how to use the NFSv4 ACL permissions system. An ACL 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.

Understanding NFSv4 ACL

This is an example of an NFSv4 ACL

HOWTO: Reduce Disk Space Usage

This "how to" 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.

LAMMPS 14May16 too-many-threads known issue fixed

Date: 
Wednesday, November 30, 2016 - 3:45pm
Supercomputer: 

The LAMMPS 14May16 known issue wherein parallel lammps spawned too many threads has been fixed on all clusters.  No user action is required; if a user had applied the OMP_NUM_THREADS workaround then it may be removed, but it will not cause probems if left in place. The corrected executables were made the defaults for module lammps/14may16 at these times:

Spark Documentation

Apache Spark is an open source cluster-computing framework originally developed in the AMPLab at University of California, Berkeley but was later donated to the Apache Software Foundation where it remains today. In contrast to Hadoop's disk-based analytics paradigm, Spark has multi-stage in-memory analytics. Spark can run programs upto 100x faster than Hadoop’s MapReduce in memory or 10x faster on disk. Spark support applications written in python, java, scala and R

Pages

Subscribe to Oakley