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Owens
Walltime Limit
Here are the queues available during the Early User Program:
Owens
How to Connect
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SSH Method
To login to Owens in the Slurm environment, ssh to one of the following hostnames:
owens-slurm.osc.edu
owens-login03.hpc.osc.edu
You can either use an ssh client application or execute ssh on the command line in a terminal window as follows:
Owens
As we migrate to Slurm from Torque/Moab, there will be necessary software environment changes.
Decommissioning old MVAPICH2 versions
Old MVAPICH2 including mvapich2/2.1, mvapich2/2.2 and its variants do not support Slurm very well due to its life span, so we will remove the following versions:
Owens
On December 15, OSC will switch to Slurm for job scheduling and resource management on Owens, to replace the current Torque/Moab environments. In preparation for the Slurm migration on Owens, OSC would like to invite all members of the client community to participate in the Early User Program in order to test the new Slurm scheduler and its TORQUE/Moab compatibility on Owens.
Owens, Pitzer
OSC clients who are affiliated with Ohio State can deploy their own endpoint on a server using OSU subscriptions. Please follow the steps below:
Manage users on a project
The PI of a project can manage the users on their projects. This includes inviting, adding and removing users to the project as well as increasing a user's privileges on a project so that they can assist with the management of it.
To manage a project, navigate to Project -> List Projects and select the blue button on the left of the appropriate project.
Owens, Pitzer
This article discusses memory tuning strategies for VASP.
Data Distribution
Typically the first approach for memory sensitive VASP issues is to tweak the data distribution (via NCORE or NPAR). The information at https://www.vasp.at/wiki/index.php/NPAR covers a variety of machines. OSC has fast communications via Infiniband.
Owens, Pitzer
This article focuses on debugging strategies for C/C++ codes, but many are applicable to other languages as well.
Rubber Duck Debugging
This approach is a great starting point. Say you have written some code, and it does not do what you expect it to do. You have stared at it for a few minutes, but you cannot seem to spot the problem.
Pitzer
OSC has entered an agreement with OSU College of Medicine (CoM) to provide dedicated compute services. Researchers from CoM will have access to Pitzer cluster, whose hardware is described below.
Hardware
Pitzer node specifications for CoM dedicated compute are:
Pitzer
This document is obsoleted and kept as a refernce for previous Pitzer programming environment. Please refer to here for the latest version.
