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Center for High Performance Computing
Research Computing and Data Support for the University Community
In addition to deploying and operating high-performance computational resources and providing advanced user support and training, CHPC serves as an expert team to broadly support the increasingly diverse research computing and data needs on campus. These needs include support for big data, big data movement, data analytics, security, virtual machines, Windows science application servers, protected environments for data mining and analysis of protected health information, advanced networking, and more.
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After nearly four decades of dedicated service at the University of Utah, Julia Harrison is retiring as the Operations Director of the Center for High Performance Computing.
Read moreAnita M. Orendt is a dedicated educator and researcher with a rich background in physical chemistry. Anita has made significant contributions to the academic community at the University of Utah.
Read moreUpcoming Events:
Allocation Requests for Winter 2025 are Due December 1st, 2024
Posted November 4th, 2024
Update to redwood idle session management following August 20, 2024 downtime
Posted September 3rd, 2024
Redwood Cluster Operating System Updated to Rocky Linux 8.10
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Allocation Requests for Fall 2024 are Due September 1st, 2024
Posted August 7th, 2024
Allocation Requests for Summer 2024 are Due June 1st, 2024
Posted May 1st, 2024
CHPC Downtime: Tuesday March 5 starting at 7:30am
Posted February 8th, 2024
Two upcoming security related changes
Posted February 6th, 2024
Allocation Requests for Spring 2024 are Due March 1st, 2024
Posted February 1st, 2024
CHPC ANNOUNCEMENT: Change in top level home directory permission settings
Posted December 14th, 2023
CHPC Spring 2024 Presentation Schedule Now Available
CHPC PE DOWNTIME: Partial Protected Environment Downtime -- Oct 24-25, 2023
Posted October 18th, 2023
CHPC INFORMATION: MATLAB and Ansys updates
Posted September 22, 2023
CHPC SECURITY REMINDER
Posted September 8th, 2023
CHPC is reaching out to remind our users of their responsibility to understand what the software being used is doing, especially software that you download, install, or compile yourself. Read More...News History...
The Activating Function Based Volume of Tissue Activated (VTA)
By Gordon Duffley1,2, Daria Nesterovich Anderson1,2, Johannes Vorwerk, PhD2, Alan "Chuck" Dorval, PhD1, Christopher R. Butson, PhD1-4
1Department of Biomedical Engineering, 2Scientific Computing & Imaging (SCI) Institute, 3Departments of Neurology and Neurosurgery, 4Department of Psychiatry, University of Utah
Computational models of the volume of tissue activated (VTA) are commonly used both clinically and for research. Because of the computational demands of the traditional axon model approach, alternative approaches to approximate the VTA have been developed. The goal of this study is to evaluate multiple approaches of calculating approximations of the VTA for monopolar and bipolar stimulations on cylindrical and directional lead designs.
Activating function and electric field norm threshold values were dependent on stimulation amplitude, electrode configuration, and pulse width. All methods resulted in highly similar approximations of the VTA for monopolar stimulation for both the directional the cylindrical DBS lead designs. For bipolar stimulation, the axon model method and AF(Max, Tang) produced similar approximations of the VTA. For bipolar stimulation, AF(GP, Max) produced an approximation of the VTA that was larger than any of the other methods. AF(GP, Max) is not biased by only using tangentially oriented axons, unlike the axon model method and AF(Max, Tang).
Read the paper in the Journal of Neural Engineering.
System Status
General Environment
General Nodes | ||
---|---|---|
system | cores | % util. |
kingspeak | 942/952 | 98.95% |
notchpeak | 2940/3212 | 91.53% |
lonepeak | 1875/1932 | 97.05% |
Owner/Restricted Nodes | ||
system | cores | % util. |
ash | Status Unavailable | |
notchpeak | 17124/22004 | 77.82% |
kingspeak | 2506/5244 | 47.79% |
lonepeak | 72/416 | 17.31% |
Protected Environment
General Nodes | ||
---|---|---|
system | cores | % util. |
redwood | 548/628 | 87.26% |
Owner/Restricted Nodes | ||
system | cores | % util. |
redwood | 2717/6444 | 42.16% |