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The Ohio Supercomputer Center (OSC) is experiencing an email delivery problem with several types of messages from MyOSC.
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Wednesday, April 4th
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4:00 - 6:00 pm |
Owens
GLPK (GNU Linear Programming Kit) is a set of open source LP (linear programming) and MIP (mixed integer problem) routines written in ANSI C, which can be called from within C programs.
Availability and Restrictions
Versions
The following versions are available on OSC systems:
Owens
ANSYS CFX (called CFX hereafter) is a computational fluid dynamics (CFD) program for modeling fluid flow and heat transfer in a variety of applications.
Availability and Restrictions
CFX is available on the Owens Cluster. You can see the currently available versions in the table on the main Ansys page here.
Occasionally, jobs that experience problems may generate emails from staff or automated systems at the center with some information about the nature of the problem. This page provides additional information about the various emails sent, and steps that can be taken to address the problem.
Owens, Pitzer
Problem description
A common problem on our systems is that a user's job causes a node out of memory or uses more than its allocated memory if the node is shared with other jobs.
Owens, Pitzer
Quantum ESPRESSO (QE) is a program package for ab-initio molecular dynamics (MD) simulations and electronic structure calculations. It is based on density-functional theory, plane waves, and pseudopotentials.
Owens, Pitzer
SSHing directly to a compute node at OSC - even if that node has been assigned to you in a current batch job - and starting VNC is an "unsafe" thing to do. When your batch job ends (and the node is assigned to other users), stray processes will be left behind and negatively impact other users. However, it is possible to use VNC on compute nodes safely.
This knowledge base is a collection of important, useful information about OSC systems that does not fit into a guide or tutorial, and is too long to be answered in a simple FAQ.
TIP: Remember to check the menu to the right of the page for related pages with more information about Ruby's specifics.
On 10/13/2016, Intel Xeon Phi coprocessors on Ruby were removed from service. Please contact OSC Help if you have any questions or want to help get access to alternative resources.
Ruby was named after the Ohio native actress Ruby Dee. An HP built, Intel® Xeon® processor-based supercomputer, Ruby provided almost the same amount of total computing power (~125 TF, used to be ~144 TF with Intel® Xeon® Phi coprocessors) as our former flagship system Oakley on less than half the number of nodes (240 nodes). Ruby had has 20 nodes are outfitted with NVIDIA® Tesla K40 accelerators (Ruby used to feature two distinct sets of hardware accelerators; 20 nodes were outfitted with NVIDIA® Tesla K40 and another 20 nodes feature Intel® Xeon® Phi coprocessors).
