Search Constraints
« Previous |
1 - 10 of 1,599
|
Next »
Number of results to display per page
View results as:
Search Results
-
- Creator:
- An, Yifu
- Description:
- We have ported our MHD code, BATSRUS ( https://github.com/SWMFsoftware/BATSRUS), to the GPU. This dataset contains the input parameters and raw timing results for the Paper. To reproduce the results, please follow the instructions and use the software specifications contained in readme.txt. and Abstract: BATSRUS, our state-of-the-art extended magnetohydrodynamic code, is the most used and one of the most resource-consuming models in the Space Weather Modeling Framework. It has always been our objective to improve its efficiency and speed with emerging techniques, such as GPU acceleration. To utilize the GPU nodes on modern supercomputers, we port BATSRUS to GPUs with the OpenACC API. Porting the code to a single GPU requires rewriting and optimizing the most used functionalities of the original code into a new solver, which accounts for around 1% of the entire program in length. To port it to multiple GPUs, we implement a new message passing algorithm to support its unique block-adaptive grid feature. We conduct weak scaling tests on as many as 256 GPUs and find good performance. The program has 50-60% parallel efficiency on up to 256 GPUs, and up to 95% efficiency within a single node (4 GPUs). Running large problems on more than one node has reduced efficiency due to hardware bottlenecks. We also demonstrate our ability to run representative magnetospheric simulations on GPUs. The performance for a single A100 GPU is about the same as 270 AMD "Rome" CPU cores, and it runs 3.6 times faster than real time. The simulation can run 6.9 times faster than real time on four A100 GPUs.
- Keyword:
- BATSRUS, GPU, and MHD simulation
- Citation to related publication:
- An, Y., Chen, Y., Zhou, H., Gaenko, A. and Toth, G. (2024). BATSRUS GPU: Faster than Real Time Magnetospheric Simulations with a Block Adaptive Grid Code. Being revised. A preprint is available at http://arxiv.org/abs/2501.06717.
- Discipline:
- Engineering
-
- Creator:
- Heath, Jeffrey
- Description:
- Documentary videos of pottery making, notably a four-part documentary of one potter's work. Credits are at the end of videos. Additional documentaries from Mali may be added later.
- Keyword:
- pottery
- Discipline:
- Humanities
-
- Creator:
- Alofs, Karen, Schell, Justin, King, Katelyn, Thomer, Andrea, Wehrly, Kevin, and Lopez-Fernandez, Hernan
- Description:
- Archives at the Institute for Fisheries Research (IFR) hold records of thousands of lake surveys from the University of Michigan and Michigan Department of Natural Resources. The records contained in this dataset are jpeg images of the index card records from the IFR surveys. Images include the front of the card and when available, the back of a card. and Treatment Report Chemical Rehabilitation cards detail the rehabilitation project that occurred in a lake. This includes the date treated, chemical used, objective of the treatment, and treatment methods. In addition, notes on the pre-treatment condition (e.g. air and water temperature) and post-treatment condition are included. These cards complement the CJUS and CEVA cards.
- Keyword:
- Lake, fish, management, and chemical treatment
- Citation to related publication:
- Erickson, Jim. "New crowdsourced project to digitize Michigan lake and fish records, looking for climate trends." University of Michigan School of Environment and Sustainability News. March 17, 2021. URL: https://seas.umich.edu/news/new-crowdsourced-project-digitize-michigan-lake-and-fish-records-looking-climate-trends
- Discipline:
- Science
-
- Creator:
- Gerber, Elisabeth R., Morenoff, Jeffrey D., Ostfeld, Mara C., Sand, Sharon L., and Fan, Yucheng
- Description:
- Survey topics included: Household Composition, Residence and Housing Status; Health, Social Determinants of Health, Long COVID, Mental Health; Disability; Perceptions of Neighborhood; Transportation mode; Financial Precarity; Perception of Control; Voting; Employment; Demographics. This data file contains 673 Ypsilanti residents' close-ended responses. The full dataset will be published on ICPSR.
- Keyword:
- Ypsilanti, MI, Household composition, Housing status, Health, Long COVID symptom, Mental health, Disability, Perceptions of neighborhood, Transportation mode, Perceptions of control, Voting, Financial precarity, Employment, and Demographics
- Discipline:
- News and Current Events and Social Sciences
-
- Creator:
- Gerber, Elisabeth R., Morenoff, Jeffrey D., Ostfeld, Mara C., Sand, Sharon L., and Fan, Yucheng
- Description:
- Survey topics included: Household Composition, Residence and Housing Status; Health, Social Determinants of Health, Long COVID, Mental Health; Disability; Perceptions of Neighborhood; Transportation mode; Financial Precarity; Perception of Control; Voting; Employment; Demographics. This data file contains 704 Flint residents' close-ended responses. The full dataset will be published on ICPSR.
- Keyword:
- Flint, MI, Household composition, Housing status, Health, Long COVID symptom , Mental health, Disability, Perceptions of neighborhood, Transportation mode, Perceptions of control, Voting, Financial precarity, Employment, and Demographics
- Discipline:
- Social Sciences and News and Current Events
-
- Creator:
- University of Michigan Museum of Paleontology and CTEES
- Description:
- Reconstructed CT slices for Right dentary of Tritemnodon (University of Michigan Museum of Paleontology catalog number UMMP VP 21186) as a series of TIFF images. Raw projections are not included in this dataset. The reconstructed slice data from the scan are offered here as a series of unsigned 16-bit integer TIFF images. The upper left corner of the first image (*_0000.tif) is the XYZ origin.
- Keyword:
- Paleontology, Fossil, CT, Hyaenodonta, UMMP, University of Michigan Museum of Paleontology, Eocene, and dc015725-d9cb-cc52-2868-666c63140c06
- Discipline:
- Science
-
- Creator:
- Gerber, Elisabeth R., Morenoff, Jeffrey D., Ostfeld, Mara C., Sand, Sharon L., and Fan, Yucheng
- Description:
- Survey topics included: Household Composition, Residence and Housing Status; Perceptions of Neighborhood; Neighborhood Blight; Social Connection, Social Isolation, Loneliness; Election; Employment; Crime, Violence, Safety & Violence Reduction Programs; Municipal Services and Democratic Values. This data file contains 2,450 Detroit residents' close-ended responses. The full dataset will be published on ICPSR.
- Keyword:
- Detroit, Employment, Neighborhood, Blight, Social cohesion, Election, Crime, Violence, Violence reduction program, Municipal service, Demographics, Voting, and Social connection
- Discipline:
- Social Sciences and News and Current Events
-
- Creator:
- Giri, Bapun, Kinsky, Nathaniel, and Diba, Kamran
- Description:
- The research that produced this data tested how sleep loss impacted the phenomena of reactivation and replay, which occurs when recently-learned information is reactivated/replayed during post-learning sleep/rest.
- Keyword:
- Hippocampus, Memory, Sleep, Sleep Deprivation, and Electrophysiology
- Citation to related publication:
- Giri, B., Kinsky, N.R., Kaya, U., Maboudi, K., Abel, T., Diba, K. (2024). Sleep loss diminishes hippocampal reactivation and replay. Nature, (2024). https://doi.org/10.1038/s41586-024-07538-2
- Discipline:
- Science
-
- Creator:
- King, Fraser and Pettersen, Claire
- Description:
- Microphysical observations of precipitating particles are crucial for numerical weather prediction models and remote sensing retrieval algorithms. This dataset provides a unified, comprehensive collection of particle microphysical observations from the Precipitation Imaging Package (PIP) over the Northern Hemisphere. Data spans from 2014-2023 across 10 measurement sites and encompasses over 775 thousand precipitating minutes. Within this dataset, users will find a range of microphysical attributes for rain and snow, along with higher-order products.
- Keyword:
- precipitation, imaging, package, PIP, snowfall, rainfall, disdrometer, particle, microphysics
- Citation to related publication:
- King, F., Pettersen, C., Bliven, L. F., Cerrai, D., Chibisov, A., Cooper, S. J., et al. (2024). A comprehensive Northern Hemisphere particle microphysics data set from the precipitation imaging package. Earth and Space Science, 11, e2024EA003538. https://doi.org/10.1029/2024EA003538
- Discipline:
- Other
-
- Creator:
- University of Michigan Museum of Paleontology and CTEES
- Description:
- Please see https://deepblue.lib.umich.edu/data/collections/gx41mj91r?locale=en for these data. Data consist of two batch scans (one batch of three scans followed by one batch of two scans, totaling five CT scans) containing slabs from the Marshall Sandstone; and edited data corresponding to figured specimens (UMMP VP 119343, 119345, 119346, and 118281). Reconstructed CT slices for Slabs of Vertebrate (University of Michigan Museum of Paleontology catalog number UMMP VP 119342etseq) as a series of TIFF images. Raw projections are not included in this dataset. The reconstructed slice data from the scan are offered here as a series of unsigned 16-bit integer TIFF images. The upper left corner of the first image (*_0000.tif) is the XYZ origin. Cropped and adjusted volumes are included for figured specimens UMMP VP 118281, 119343, 119345, and 119346 as-is, with scan parameter notes in respective zip folders. Data include: UMMP VP 119342, 119343, 119344, 119345, 119346, 119347, 119348, 119349, 119350, 119351, 119501 corresponding with the following UUIDs: 882a6fa3-b7cc-62fa-e117-694b0d14dde1 fc227a73-300f-af25-aba8-5360f843aa14 57af0b20-3e98-3bd9-3560-e16ac8a528ac 0c936931-8cb0-57e7-5847-fa37c2066d72 c6f93408-47d1-6238-c093-902b976d021b 95f8fc96-7331-4142-b6a2-09339e8a4d15 e520d6c4-1de1-999e-7a02-c55056c76d33 74d33ea5-f147-13c2-3e44-6968df7ac7bf 82ca3e68-d05a-971d-5704-293d4601b62e afb2c66a-5b73-a99b-1dac-8f8efe29d90a 4b5ba3c4-99ba-cd2c-d2e6-6d6f5501a526
- Keyword:
- Paleontology, Fossil, CT, Vertebrate, Actinopterygii, Sarcopterygii, Chondrichthyes, UMMP, University of Michigan Museum of Paleontology, Carboniferous, Marshall Sandstone, Mississippian, CTEES, and 119342 119343 119344 119345 119346 119347 119348 119349 119350 119351 119501 882a6fa3-b7cc-62fa-e117-694b0d14dde1 fc227a73-300f-af25-aba8-5360f843aa14 57af0b20-3e98-3bd9-3560-e16ac8a528ac 0c936931-8cb0-57e7-5847-fa37c2066d72 c6f93408-47d1-6238-c093-902b976d021b 95f8fc96-7331-4142-b6a2-09339e8a4d15 e520d6c4-1de1-999e-7a02-c55056c76d33 74d33ea5-f147-13c2-3e44-6968df7ac7bf 82ca3e68-d05a-971d-5704-293d4601b62e afb2c66a-5b73-a99b-1dac-8f8efe29d90a 4b5ba3c4-99ba-cd2c-d2e6-6d6f5501a526
- Citation to related publication:
- JAMES V. ANDREWS, ETHAN A. SHIRLEY, AND RODRIGO T. FIGUEROA. VERTEBRATES OF THE BLUE RIDGE ESKER (MISSISSIPPIAN, MARSHALL SANDSTONE) OF MICHIGAN. Contributions from the Museum of Paleontology, University of Michigan, Vol. 36, no. 3, pp. 1–16, 2024
- Discipline:
- Science