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Ruby

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 response to comments on this webpage after the public comment period closes. Please submit your comments via our online form by the deadline. 

Comment Form 

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.

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:

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 are reduced, in order to keep the healthy performance of the file system. In addition, using swap memory is not allowed anymore. 

Amber 16 now available

Date: 
Friday, July 29, 2016 - 4:15pm
Supercomputer: 

Amber 16 has been installed on the OSC clusters; usage is via the module amber/16. For information on available executables and installation details see the software page for Amber or the output of the module help command, e.g.: module help amber/16.  On August 15, 2016 Amber 16 will be made the default amber module.

Octave

Octave is a high-level language, primarily intended for numerical computations. It provides a convenient command-line interface for solving linear and nonlinear problems numerically, and for performing other numerical experiments using a language that is mostly compatible with Matlab. It may also be used as a batch-oriented language.

Octave has extensive tools for solving common numerical linear algebra problems, finding the roots of nonlinear equations, integrating ordinary functions, manipulating polynomials, and integrating ordinary differential and differential-algebraic equations. It is easily extensible and customizable via user-defined functions written in Octave's own language, or using dynamically loaded modules written in C++, C, Fortran, or other languages.

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