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Center for High Throughput Computing

Citing CHTC Resources

In a Publication

This research was performed using the compute resources and assistance of the UW-Madison Center For High Throughput Computing (CHTC) in the Department of Computer Sciences. The CHTC is supported by UW-Madison, the Advanced Computing Initiative, the Wisconsin Alumni Research Foundation, the Wisconsin Institutes for Discovery, and the National Science Foundation, and is an active member of the Open Science Grid, which is supported by the National Science Foundation and the U.S. Department of Energy's Office of Science.

(Last updated Jan 6, 2021)

Appropriate acknowledgement of Open Science Grid resources is described here

For a Grant Proposal

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The University of Wisconsin-Madison (UW-Madison) campus is an excellent match for meeting the computational needs of this project. Existing UW-Madison technology infrastructure supported by the CHTC can be readily leveraged, including CPU capacity, network connectivity, storage availability, and middleware connectivity. But perhaps most important, the UW-Madison has significant staff experience and core competency in deploying, managing, and using computational technology. The UW-Madison's Advanced Computing Initiative (ACI) has invested in the CHTC as the primary provider of shared large-scale computing infrastructure to campus researchers, and all standard CHTC services are provided free-of-charge to campus researchers, with rarely-necessary options for researcher purchases of dedicated hardware (determined on a case-by-case basis).

For high-throughput computing (HTC) capability, UW-Madison maintains many compute clusters across campus, which are managed via software developed by the UW-Madison's HTCondor Project distributed computing research group; therefore, these clusters are linked together to share resources via widely adopted distributed computing technologies. Together these clusters represent roughly 30,000 CPU cores in support of research. In 2017, CHTC supported more than 380 million CPU hours of computing work for campus researchers. Temporary file space for large individual files can support up to hundreds of terabytes of total working data. For single computing runs needing significant memory on a single server, the CHTC maintains several multi-core servers terabytes of memory. Should these resources not be sufficient for your project, CHTC users can also engage computing resources from the Open Science Grid (OSG), also at no cost to researchers. OSG is an expanding, NSF-funded alliance of more than 120 universities, national laboratories, scientific collaborations, and software developers, and CHTC users have automatic access to OSG's considerable computing and storage resources. Individual users of our high throughput computing (HTC) system, including Open Science Grid capacity, can frequently obtain in excess of 200,000 CPU hours per day.

For high performance computing (HPC) capability, the CHTC also maintains a shared-use cluster of roughly 7000 tightly coupled cores. Compute nodes have 16 or 20 cores, each, and 64 or 128 GB RAM, with access to a shared file system and resources managed via the open-source software, SLURM. This cluster, deployed in June 2013 and expanded significantly in summer 2014, delivered more than 50 million CPU hours in 2017. The current configuration of this cluster is the result of intimate collaborations with UW-Madison's Advanced Computing Initiative (ACI) and fellow computing centers at other campuses through the NSF-funded ACI-REF project.

Between the ACI, CHTC, and aforementioned HTCondor Project, UW-Madison is home to over 20 full-time staff with a proven track record of making compute middleware work for scientists. Far beyond just being familiar with the deployment and use of such software, UW staff has been intimately involved in its design and implementation. Furthermore, the CHTC provides consulting for the development of robust HTC and HPC research methods, support for grant proposal development, and a variety of formal and informal training opportunities for users of CHTC resources.

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To collaborate with off-campus collaborators, and when local UW-Madison compute resources are not sufficient, grid middleware connectivity becomes essential. In this area, UW-Madison is an active participant in NSF XSEDE activities, is the lead institution for the NSF-funded Open Science Grid, and runs a Tier-2 computing center for the international CMS LHC experiment.

(Last updated Feb 27, 2016)