[{"department":[{"_id":"27"},{"_id":"518"}],"type":"report","keyword":["Otus","Supercomputer","FPGA","PC2","Paderborn Center for Parallel Computing","Noctua 2","HPC"],"date_created":"2025-12-09T09:11:04Z","file":[{"file_id":"62982","content_type":"application/pdf","file_name":"2512.07401v1.pdf","access_level":"open_access","file_size":4535595,"relation":"main_file","date_updated":"2026-03-25T11:50:30Z","date_created":"2025-12-09T09:19:12Z","creator":"deffel"}],"abstract":[{"lang":"eng","text":"Otus is a high-performance computing cluster that was launched in 2025 and is operated by the Paderborn Center for Parallel Computing (PC2) at Paderborn University in Germany. The system is part of the National High Performance Computing (NHR) initiative. Otus complements the previous supercomputer Noctua 2, offering approximately twice the computing power while retaining the three node types that were characteristic of Noctua 2: 1) CPU compute nodes with different memory capacities, 2) high-end GPU nodes, and 3) HPC-grade FPGA nodes. On the Top500 list, which ranks the 500 most powerful supercomputers in the world, Otus is in position 164 with the CPU partition and in position 255 with the GPU partition (June 2025). On the Green500 list, ranking the 500 most energy-efficient supercomputers in the world, Otus is in position 5 with the GPU partition (June 2025).\r\n\r\n\r\nThis article provides a comprehensive overview of the system in terms of its hardware, software, system integration, and its overall integration into the data center building to ensure energy-efficient operation. The article aims to provide unique insights for scientists using the system and for other centers operating HPC clusters. The article will be continuously updated to reflect the latest system setup and measurements. "}],"doi":"10.48550/ARXIV.2512.07401","language":[{"iso":"eng"}],"series_title":"PC2 Tech­nic­al Re­port Series","intvolume":"         1","date_updated":"2026-03-25T11:50:31Z","publication_status":"published","author":[{"full_name":"Ehtesabi, Sadaf","first_name":"Sadaf","last_name":"Ehtesabi","id":"116116"},{"id":"114619","full_name":"Hossain, Manoar","last_name":"Hossain","first_name":"Manoar","orcid":"https://orcid.org/0000-0002-0737-7981"},{"id":"3145","full_name":"Kenter, Tobias","last_name":"Kenter","first_name":"Tobias"},{"id":"15275","full_name":"Krawinkel, Andreas","first_name":"Andreas","last_name":"Krawinkel"},{"id":"69976","full_name":"Ostermann, Lukas","last_name":"Ostermann","first_name":"Lukas"},{"full_name":"Plessl, Christian","first_name":"Christian","last_name":"Plessl","orcid":"0000-0001-5728-9982","id":"16153"},{"first_name":"Heinrich","last_name":"Riebler","full_name":"Riebler, Heinrich","id":"8961"},{"full_name":"Rohde, Stefan","last_name":"Rohde","first_name":"Stefan","id":"34009"},{"id":"75963","full_name":"Schade, Robert","first_name":"Robert","orcid":"0000-0002-6268-5397","last_name":"Schade"},{"full_name":"Schwarz, Michael","first_name":"Michael","last_name":"Schwarz","id":"5312"},{"id":"15273","first_name":"Jens","last_name":"Simon","full_name":"Simon, Jens"},{"full_name":"Winnwa, Nils","first_name":"Nils","last_name":"Winnwa","id":"61189"},{"id":"23522","orcid":"0000-0003-1764-9773","first_name":"Alex","last_name":"Wiens","full_name":"Wiens, Alex"},{"last_name":"Wu","first_name":"Xin","full_name":"Wu, Xin","id":"77439"}],"title":"Otus Supercomputer","year":"2025","oa":"1","place":"Paderborn","report_number":"PC2TR-2025-1","citation":{"mla":"Ehtesabi, Sadaf, et al. <i>Otus Supercomputer</i>. Paderborn Center for Parallel Computing (PC2), 2025, doi:<a href=\"https://doi.org/10.48550/ARXIV.2512.07401\">10.48550/ARXIV.2512.07401</a>.","bibtex":"@book{Ehtesabi_Hossain_Kenter_Krawinkel_Ostermann_Plessl_Riebler_Rohde_Schade_Schwarz_et al._2025, place={Paderborn}, series={PC2 Tech­nic­al Re­port Series}, title={Otus Supercomputer}, volume={1}, DOI={<a href=\"https://doi.org/10.48550/ARXIV.2512.07401\">10.48550/ARXIV.2512.07401</a>}, publisher={Paderborn Center for Parallel Computing (PC2)}, author={Ehtesabi, Sadaf and Hossain, Manoar and Kenter, Tobias and Krawinkel, Andreas and Ostermann, Lukas and Plessl, Christian and Riebler, Heinrich and Rohde, Stefan and Schade, Robert and Schwarz, Michael and et al.}, year={2025}, collection={PC2 Tech­nic­al Re­port Series} }","ama":"Ehtesabi S, Hossain M, Kenter T, et al. <i>Otus Supercomputer</i>. Vol 1. Paderborn Center for Parallel Computing (PC2); 2025. doi:<a href=\"https://doi.org/10.48550/ARXIV.2512.07401\">10.48550/ARXIV.2512.07401</a>","ieee":"S. Ehtesabi <i>et al.</i>, <i>Otus Supercomputer</i>, vol. 1. Paderborn: Paderborn Center for Parallel Computing (PC2), 2025.","apa":"Ehtesabi, S., Hossain, M., Kenter, T., Krawinkel, A., Ostermann, L., Plessl, C., Riebler, H., Rohde, S., Schade, R., Schwarz, M., Simon, J., Winnwa, N., Wiens, A., &#38; Wu, X. (2025). <i>Otus Supercomputer</i> (Vol. 1). Paderborn Center for Parallel Computing (PC2). <a href=\"https://doi.org/10.48550/ARXIV.2512.07401\">https://doi.org/10.48550/ARXIV.2512.07401</a>","chicago":"Ehtesabi, Sadaf, Manoar Hossain, Tobias Kenter, Andreas Krawinkel, Lukas Ostermann, Christian Plessl, Heinrich Riebler, et al. <i>Otus Supercomputer</i>. Vol. 1. PC2 Tech­nic­al Re­port Series. Paderborn: Paderborn Center for Parallel Computing (PC2), 2025. <a href=\"https://doi.org/10.48550/ARXIV.2512.07401\">https://doi.org/10.48550/ARXIV.2512.07401</a>.","short":"S. Ehtesabi, M. Hossain, T. Kenter, A. Krawinkel, L. Ostermann, C. Plessl, H. Riebler, S. Rohde, R. Schade, M. Schwarz, J. Simon, N. Winnwa, A. Wiens, X. Wu, Otus Supercomputer, Paderborn Center for Parallel Computing (PC2), Paderborn, 2025."},"file_date_updated":"2026-03-25T11:50:30Z","volume":1,"ddc":["004"],"user_id":"23522","publisher":"Paderborn Center for Parallel Computing (PC2)","_id":"62981","page":"33","has_accepted_license":"1","status":"public"},{"project":[{"_id":"52","name":"PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing"}],"file_date_updated":"2024-04-26T08:35:17Z","citation":{"mla":"Bauer, Carsten, et al. “Noctua 2 Supercomputer.” <i>Journal of Large-Scale Research Facilities</i>, vol. 9, 2024, doi:<a href=\"https://doi.org/10.17815/jlsrf-8-187 \">10.17815/jlsrf-8-187 </a>.","bibtex":"@article{Bauer_Kenter_Lass_Mazur_Meyer_Nitsche_Riebler_Schade_Schwarz_Winnwa_et al._2024, title={Noctua 2 Supercomputer}, volume={9}, DOI={<a href=\"https://doi.org/10.17815/jlsrf-8-187 \">10.17815/jlsrf-8-187 </a>}, journal={Journal of large-scale research facilities}, author={Bauer, Carsten and Kenter, Tobias and Lass, Michael and Mazur, Lukas and Meyer, Marius and Nitsche, Holger and Riebler, Heinrich and Schade, Robert and Schwarz, Michael and Winnwa, Nils and et al.}, year={2024} }","ama":"Bauer C, Kenter T, Lass M, et al. Noctua 2 Supercomputer. <i>Journal of large-scale research facilities</i>. 2024;9. doi:<a href=\"https://doi.org/10.17815/jlsrf-8-187 \">10.17815/jlsrf-8-187 </a>","ieee":"C. Bauer <i>et al.</i>, “Noctua 2 Supercomputer,” <i>Journal of large-scale research facilities</i>, vol. 9, 2024, doi: <a href=\"https://doi.org/10.17815/jlsrf-8-187 \">10.17815/jlsrf-8-187 </a>.","apa":"Bauer, C., Kenter, T., Lass, M., Mazur, L., Meyer, M., Nitsche, H., Riebler, H., Schade, R., Schwarz, M., Winnwa, N., Wiens, A., Wu, X., Plessl, C., &#38; Simon, J. (2024). Noctua 2 Supercomputer. <i>Journal of Large-Scale Research Facilities</i>, <i>9</i>. <a href=\"https://doi.org/10.17815/jlsrf-8-187 \">https://doi.org/10.17815/jlsrf-8-187 </a>","chicago":"Bauer, Carsten, Tobias Kenter, Michael Lass, Lukas Mazur, Marius Meyer, Holger Nitsche, Heinrich Riebler, et al. “Noctua 2 Supercomputer.” <i>Journal of Large-Scale Research Facilities</i> 9 (2024). <a href=\"https://doi.org/10.17815/jlsrf-8-187 \">https://doi.org/10.17815/jlsrf-8-187 </a>.","short":"C. Bauer, T. Kenter, M. Lass, L. Mazur, M. Meyer, H. Nitsche, H. Riebler, R. Schade, M. Schwarz, N. Winnwa, A. Wiens, X. Wu, C. Plessl, J. Simon, Journal of Large-Scale Research Facilities 9 (2024)."},"oa":"1","has_accepted_license":"1","status":"public","ddc":["004"],"user_id":"8961","volume":9,"_id":"53663","abstract":[{"lang":"eng","text":"Noctua 2 is a supercomputer operated at the Paderborn Center for Parallel Computing (PC2) at Paderborn University in Germany. Noctua 2 was inaugurated in 2022 and is an Atos BullSequana XH2000 system. It consists mainly of three node types: 1) CPU Compute nodes with AMD EPYC processors in different main memory configurations, 2) GPU nodes with NVIDIA A100 GPUs, and 3) FPGA nodes with Xilinx Alveo U280 and Intel Stratix 10 FPGA cards. While CPUs and GPUs are known off-the-shelf components in HPC systems, the operation of a large number of FPGA cards from different vendors and a dedicated FPGA-to-FPGA network are unique characteristics of Noctua 2. This paper describes in detail the overall setup of Noctua 2 and gives insights into the operation of the cluster from a hardware, software and facility perspective."}],"publication":"Journal of large-scale research facilities","keyword":["Noctua 2","Supercomputer","FPGA","PC2","Paderborn Center for Parallel Computing"],"type":"journal_article","department":[{"_id":"27"},{"_id":"518"}],"file":[{"content_type":"application/pdf","file_id":"53664","date_updated":"2024-04-26T08:35:17Z","relation":"main_file","access_level":"open_access","file_size":3825480,"file_name":"Noctua2_Supercomputer.pdf","date_created":"2024-04-26T07:30:20Z","creator":"deffel"}],"date_created":"2024-04-26T07:39:41Z","date_updated":"2024-04-26T08:44:30Z","publication_status":"published","intvolume":"         9","article_type":"original","title":"Noctua 2 Supercomputer","year":"2024","author":[{"first_name":"Carsten","last_name":"Bauer","full_name":"Bauer, Carsten","id":"90082"},{"last_name":"Kenter","first_name":"Tobias","full_name":"Kenter, Tobias","id":"3145"},{"full_name":"Lass, Michael","first_name":"Michael","last_name":"Lass","orcid":"0000-0002-5708-7632","id":"24135"},{"last_name":"Mazur","first_name":"Lukas","orcid":" 0000-0001-6304-7082","full_name":"Mazur, Lukas","id":"90492"},{"full_name":"Meyer, Marius","first_name":"Marius","last_name":"Meyer","id":"40778"},{"full_name":"Nitsche, Holger","last_name":"Nitsche","first_name":"Holger","id":"15272"},{"first_name":"Heinrich","last_name":"Riebler","full_name":"Riebler, Heinrich","id":"8961"},{"id":"75963","full_name":"Schade, Robert","last_name":"Schade","orcid":"0000-0002-6268-5397","first_name":"Robert"},{"full_name":"Schwarz, Michael","first_name":"Michael","last_name":"Schwarz","id":"5312"},{"first_name":"Nils","last_name":"Winnwa","full_name":"Winnwa, Nils","id":"61189"},{"full_name":"Wiens, Alex","orcid":"0000-0003-1764-9773","last_name":"Wiens","first_name":"Alex","id":"23522"},{"full_name":"Wu, Xin","last_name":"Wu","first_name":"Xin","id":"77439"},{"orcid":"0000-0001-5728-9982","last_name":"Plessl","first_name":"Christian","full_name":"Plessl, Christian","id":"16153"},{"first_name":"Jens","last_name":"Simon","full_name":"Simon, Jens","id":"15273"}],"doi":"10.17815/jlsrf-8-187 ","language":[{"iso":"eng"}]},{"date_created":"2023-08-16T14:44:11Z","type":"journal_article","keyword":["Catalysis","General Chemistry","pc2-ressources","Computing Resources Provided by the Paderborn Center for Parallel Computing"],"issue":"13","publication":"ACS Catalysis","language":[{"iso":"eng"}],"doi":"10.1021/acscatal.3c02092","author":[{"full_name":"Rogolino, Andrea","last_name":"Rogolino","first_name":"Andrea"},{"first_name":"José B. G.","last_name":"Filho","full_name":"Filho, José B. G."},{"id":"44418","first_name":"Lorena","last_name":"Fritsch","full_name":"Fritsch, Lorena"},{"first_name":"José D.","last_name":"Ardisson","full_name":"Ardisson, José D."},{"last_name":"da Silva","first_name":"Marcos A. R.","full_name":"da Silva, Marcos A. R."},{"last_name":"Atta Diab","first_name":"Gabriel Ali","full_name":"Atta Diab, Gabriel Ali"},{"full_name":"Silva, Ingrid Fernandes","first_name":"Ingrid Fernandes","last_name":"Silva"},{"full_name":"Moraes, Carlos André Ferreira","first_name":"Carlos André Ferreira","last_name":"Moraes"},{"full_name":"Forim, Moacir Rossi","last_name":"Forim","first_name":"Moacir Rossi"},{"full_name":"Bauer, Matthias","last_name":"Bauer","first_name":"Matthias","orcid":"0000-0002-9294-6076","id":"47241"},{"full_name":"Kühne, Thomas D.","last_name":"Kühne","first_name":"Thomas D."},{"first_name":"Markus","last_name":"Antonietti","full_name":"Antonietti, Markus"},{"last_name":"Teixeira","first_name":"Ivo F.","full_name":"Teixeira, Ivo F."}],"publication_identifier":{"issn":["2155-5435","2155-5435"]},"year":"2023","title":"Direct Synthesis of Acetone by Aerobic Propane Oxidation Promoted by Photoactive Iron(III) Chloride under Mild Conditions","intvolume":"        13","date_updated":"2024-03-07T09:34:41Z","publication_status":"published","citation":{"chicago":"Rogolino, Andrea, José B. G. Filho, Lorena Fritsch, José D. Ardisson, Marcos A. R. da Silva, Gabriel Ali Atta Diab, Ingrid Fernandes Silva, et al. “Direct Synthesis of Acetone by Aerobic Propane Oxidation Promoted by Photoactive Iron(III) Chloride under Mild Conditions.” <i>ACS Catalysis</i> 13, no. 13 (2023): 8662–69. <a href=\"https://doi.org/10.1021/acscatal.3c02092\">https://doi.org/10.1021/acscatal.3c02092</a>.","short":"A. Rogolino, J.B.G. Filho, L. Fritsch, J.D. Ardisson, M.A.R. da Silva, G.A. Atta Diab, I.F. Silva, C.A.F. Moraes, M.R. Forim, M. Bauer, T.D. Kühne, M. Antonietti, I.F. Teixeira, ACS Catalysis 13 (2023) 8662–8669.","apa":"Rogolino, A., Filho, J. B. G., Fritsch, L., Ardisson, J. D., da Silva, M. A. R., Atta Diab, G. A., Silva, I. F., Moraes, C. A. F., Forim, M. R., Bauer, M., Kühne, T. D., Antonietti, M., &#38; Teixeira, I. F. (2023). Direct Synthesis of Acetone by Aerobic Propane Oxidation Promoted by Photoactive Iron(III) Chloride under Mild Conditions. <i>ACS Catalysis</i>, <i>13</i>(13), 8662–8669. <a href=\"https://doi.org/10.1021/acscatal.3c02092\">https://doi.org/10.1021/acscatal.3c02092</a>","ieee":"A. Rogolino <i>et al.</i>, “Direct Synthesis of Acetone by Aerobic Propane Oxidation Promoted by Photoactive Iron(III) Chloride under Mild Conditions,” <i>ACS Catalysis</i>, vol. 13, no. 13, pp. 8662–8669, 2023, doi: <a href=\"https://doi.org/10.1021/acscatal.3c02092\">10.1021/acscatal.3c02092</a>.","ama":"Rogolino A, Filho JBG, Fritsch L, et al. Direct Synthesis of Acetone by Aerobic Propane Oxidation Promoted by Photoactive Iron(III) Chloride under Mild Conditions. <i>ACS Catalysis</i>. 2023;13(13):8662-8669. doi:<a href=\"https://doi.org/10.1021/acscatal.3c02092\">10.1021/acscatal.3c02092</a>","bibtex":"@article{Rogolino_Filho_Fritsch_Ardisson_da Silva_Atta Diab_Silva_Moraes_Forim_Bauer_et al._2023, title={Direct Synthesis of Acetone by Aerobic Propane Oxidation Promoted by Photoactive Iron(III) Chloride under Mild Conditions}, volume={13}, DOI={<a href=\"https://doi.org/10.1021/acscatal.3c02092\">10.1021/acscatal.3c02092</a>}, number={13}, journal={ACS Catalysis}, publisher={American Chemical Society (ACS)}, author={Rogolino, Andrea and Filho, José B. G. and Fritsch, Lorena and Ardisson, José D. and da Silva, Marcos A. R. and Atta Diab, Gabriel Ali and Silva, Ingrid Fernandes and Moraes, Carlos André Ferreira and Forim, Moacir Rossi and Bauer, Matthias and et al.}, year={2023}, pages={8662–8669} }","mla":"Rogolino, Andrea, et al. “Direct Synthesis of Acetone by Aerobic Propane Oxidation Promoted by Photoactive Iron(III) Chloride under Mild Conditions.” <i>ACS Catalysis</i>, vol. 13, no. 13, American Chemical Society (ACS), 2023, pp. 8662–69, doi:<a href=\"https://doi.org/10.1021/acscatal.3c02092\">10.1021/acscatal.3c02092</a>."},"publisher":"American Chemical Society (ACS)","_id":"46547","page":"8662-8669","volume":13,"user_id":"44418","status":"public"},{"date_updated":"2024-03-25T09:09:18Z","author":[{"last_name":"Schall","first_name":"Christoph Wilhelm Theodor","full_name":"Schall, Christoph Wilhelm Theodor","id":"44224"},{"id":"20530","full_name":"Schöppner, Volker","last_name":"Schöppner","first_name":"Volker"}],"conference":{"name":"PPS36"},"status":"public","title":"Design of a test bench for measuring the degradation behavior of plastics during processing","year":"2023","user_id":"44116","_id":"29946","language":[{"iso":"eng"}],"quality_controlled":"1","citation":{"chicago":"Schall, Christoph Wilhelm Theodor, and Volker Schöppner. “Design of a Test Bench for Measuring the Degradation Behavior of Plastics during Processing.” In <i>PPS36</i>, 2023.","short":"C.W.T. Schall, V. Schöppner, in: PPS36, 2023.","ieee":"C. W. T. Schall and V. Schöppner, “Design of a test bench for measuring the degradation behavior of plastics during processing,” presented at the PPS36, 2023.","apa":"Schall, C. W. T., &#38; Schöppner, V. (2023). Design of a test bench for measuring the degradation behavior of plastics during processing. <i>PPS36</i>. PPS36.","bibtex":"@inproceedings{Schall_Schöppner_2023, title={Design of a test bench for measuring the degradation behavior of plastics during processing}, booktitle={PPS36}, author={Schall, Christoph Wilhelm Theodor and Schöppner, Volker}, year={2023} }","ama":"Schall CWT, Schöppner V. Design of a test bench for measuring the degradation behavior of plastics during processing. In: <i>PPS36</i>. ; 2023.","mla":"Schall, Christoph Wilhelm Theodor, and Volker Schöppner. “Design of a Test Bench for Measuring the Degradation Behavior of Plastics during Processing.” <i>PPS36</i>, 2023."},"publication":"PPS36","department":[{"_id":"9"},{"_id":"367"},{"_id":"321"}],"type":"conference","keyword":["Computing Resources Provided by the Paderborn Center for Parallel Computing"],"date_created":"2022-02-22T08:06:35Z"},{"user_id":"44224","volume":62,"page":"815-823","_id":"29947","status":"public","quality_controlled":"1","citation":{"ieee":"C. W. T. Schall and V. Schöppner, “Measurement of material degradation in dependence of shear rate, temperature, and residence time,” <i>Polymer Engineering and Science</i>, vol. 62, no. 3, pp. 815–823, 2022, doi: <a href=\"https://doi.org/10.1002/pen.25887\">10.1002/pen.25887</a>.","mla":"Schall, Christoph Wilhelm Theodor, and Volker Schöppner. “Measurement of Material Degradation in Dependence of Shear Rate, Temperature, and Residence Time.” <i>Polymer Engineering and Science</i>, vol. 62, no. 3, 2022, pp. 815–23, doi:<a href=\"https://doi.org/10.1002/pen.25887\">10.1002/pen.25887</a>.","apa":"Schall, C. W. T., &#38; Schöppner, V. (2022). Measurement of material degradation in dependence of shear rate, temperature, and residence time. <i>Polymer Engineering and Science</i>, <i>62</i>(3), 815–823. <a href=\"https://doi.org/10.1002/pen.25887\">https://doi.org/10.1002/pen.25887</a>","bibtex":"@article{Schall_Schöppner_2022, title={Measurement of material degradation in dependence of shear rate, temperature, and residence time}, volume={62}, DOI={<a href=\"https://doi.org/10.1002/pen.25887\">10.1002/pen.25887</a>}, number={3}, journal={Polymer Engineering and Science}, author={Schall, Christoph Wilhelm Theodor and Schöppner, Volker}, year={2022}, pages={815–823} }","chicago":"Schall, Christoph Wilhelm Theodor, and Volker Schöppner. “Measurement of Material Degradation in Dependence of Shear Rate, Temperature, and Residence Time.” <i>Polymer Engineering and Science</i> 62, no. 3 (2022): 815–23. <a href=\"https://doi.org/10.1002/pen.25887\">https://doi.org/10.1002/pen.25887</a>.","ama":"Schall CWT, Schöppner V. Measurement of material degradation in dependence of shear rate, temperature, and residence time. <i>Polymer Engineering and Science</i>. 2022;62(3):815-823. doi:<a href=\"https://doi.org/10.1002/pen.25887\">10.1002/pen.25887</a>","short":"C.W.T. Schall, V. Schöppner, Polymer Engineering and Science 62 (2022) 815–823."},"doi":"10.1002/pen.25887","language":[{"iso":"eng"}],"date_updated":"2022-04-20T10:13:34Z","publication_status":"published","intvolume":"        62","year":"2022","title":"Measurement of material degradation in dependence of shear rate, temperature, and residence time","author":[{"first_name":"Christoph Wilhelm Theodor","last_name":"Schall","full_name":"Schall, Christoph Wilhelm Theodor","id":"44224"},{"id":"20530","last_name":"Schöppner","first_name":"Volker","full_name":"Schöppner, Volker"}],"type":"journal_article","keyword":["Computing Resources Provided by the Paderborn Center for Parallel Computing"],"department":[{"_id":"9"},{"_id":"367"},{"_id":"321"}],"date_created":"2022-02-22T08:09:47Z","publication":"Polymer Engineering and Science","issue":"3"},{"language":[{"iso":"eng"}],"_id":"29948","ddc":["620"],"doi":"https://doi.org/10.3390/polym14020256","user_id":"44116","year":"2022","title":"Numerical Simulation of Solids Conveying in Grooved Feed Sections of Single Screw Extruders","status":"public","author":[{"last_name":"Brüning","first_name":"Florian","full_name":"Brüning, Florian","id":"72920"},{"first_name":"Volker","last_name":"Schöppner","full_name":"Schöppner, Volker","id":"20530"}],"date_updated":"2023-05-02T06:47:24Z","has_accepted_license":"1","date_created":"2022-02-22T08:26:47Z","keyword":["Computing Resources Provided by the Paderborn Center for Parallel Computing"],"type":"journal_article","department":[{"_id":"9"},{"_id":"367"},{"_id":"321"}],"publication":"Polymers 14","citation":{"mla":"Brüning, Florian, and Volker Schöppner. “Numerical Simulation of Solids Conveying in Grooved Feed Sections of Single Screw Extruders.” <i>Polymers 14</i>, 2022, doi:<a href=\"https://doi.org/10.3390/polym14020256\">https://doi.org/10.3390/polym14020256</a>.","ama":"Brüning F, Schöppner V. Numerical Simulation of Solids Conveying in Grooved Feed Sections of Single Screw Extruders. <i>Polymers 14</i>. Published online 2022. doi:<a href=\"https://doi.org/10.3390/polym14020256\">https://doi.org/10.3390/polym14020256</a>","bibtex":"@article{Brüning_Schöppner_2022, title={Numerical Simulation of Solids Conveying in Grooved Feed Sections of Single Screw Extruders}, DOI={<a href=\"https://doi.org/10.3390/polym14020256\">https://doi.org/10.3390/polym14020256</a>}, journal={Polymers 14}, author={Brüning, Florian and Schöppner, Volker}, year={2022} }","apa":"Brüning, F., &#38; Schöppner, V. (2022). Numerical Simulation of Solids Conveying in Grooved Feed Sections of Single Screw Extruders. <i>Polymers 14</i>. <a href=\"https://doi.org/10.3390/polym14020256\">https://doi.org/10.3390/polym14020256</a>","ieee":"F. Brüning and V. Schöppner, “Numerical Simulation of Solids Conveying in Grooved Feed Sections of Single Screw Extruders,” <i>Polymers 14</i>, 2022, doi: <a href=\"https://doi.org/10.3390/polym14020256\">https://doi.org/10.3390/polym14020256</a>.","short":"F. Brüning, V. Schöppner, Polymers 14 (2022).","chicago":"Brüning, Florian, and Volker Schöppner. “Numerical Simulation of Solids Conveying in Grooved Feed Sections of Single Screw Extruders.” <i>Polymers 14</i>, 2022. <a href=\"https://doi.org/10.3390/polym14020256\">https://doi.org/10.3390/polym14020256</a>."},"quality_controlled":"1"},{"date_created":"2018-03-22T10:53:01Z","department":[{"_id":"27"},{"_id":"518"},{"_id":"304"}],"keyword":["approximate computing","linear algebra","matrix inversion","matrix p-th roots","numeric algorithm","parallel computing"],"type":"conference","publication":"Proc. Platform for Advanced Scientific Computing (PASC) Conference","abstract":[{"text":"We present the submatrix method, a highly parallelizable method for the approximate calculation of inverse p-th roots of large sparse symmetric matrices which are required in different scientific applications. Following the idea of Approximate Computing, we allow imprecision in the final result in order to utilize the sparsity of the input matrix and to allow massively parallel execution. For an n x n matrix, the proposed algorithm allows to distribute the calculations over n nodes with only little communication overhead. The result matrix exhibits the same sparsity pattern as the input matrix, allowing for efficient reuse of allocated data structures.\r\n\r\nWe evaluate the algorithm with respect to the error that it introduces into calculated results, as well as its performance and scalability. We demonstrate that the error is relatively limited for well-conditioned matrices and that results are still valuable for error-resilient applications like preconditioning even for ill-conditioned matrices. We discuss the execution time and scaling of the algorithm on a theoretical level and present a distributed implementation of the algorithm using MPI and OpenMP. We demonstrate the scalability of this implementation by running it on a high-performance compute cluster comprised of 1024 CPU cores, showing a speedup of 665x compared to single-threaded execution.","lang":"eng"}],"language":[{"iso":"eng"}],"doi":"10.1145/3218176.3218231","publication_identifier":{"isbn":["978-1-4503-5891-0/18/07"]},"author":[{"full_name":"Lass, Michael","orcid":"0000-0002-5708-7632","first_name":"Michael","last_name":"Lass","id":"24135"},{"full_name":"Mohr, Stephan","first_name":"Stephan","last_name":"Mohr"},{"full_name":"Wiebeler, Hendrik","first_name":"Hendrik","last_name":"Wiebeler"},{"first_name":"Thomas","last_name":"Kühne","full_name":"Kühne, Thomas","id":"49079"},{"last_name":"Plessl","orcid":"0000-0001-5728-9982","first_name":"Christian","full_name":"Plessl, Christian","id":"16153"}],"year":"2018","title":"A Massively Parallel Algorithm for the Approximate Calculation of Inverse p-th Roots of Large Sparse Matrices","date_updated":"2023-09-26T11:48:12Z","place":"New York, NY, USA","external_id":{"arxiv":["1710.10899"]},"citation":{"mla":"Lass, Michael, et al. “A Massively Parallel Algorithm for the Approximate Calculation of Inverse P-Th Roots of Large Sparse Matrices.” <i>Proc. Platform for Advanced Scientific Computing (PASC) Conference</i>, ACM, 2018, doi:<a href=\"https://doi.org/10.1145/3218176.3218231\">10.1145/3218176.3218231</a>.","bibtex":"@inproceedings{Lass_Mohr_Wiebeler_Kühne_Plessl_2018, place={New York, NY, USA}, title={A Massively Parallel Algorithm for the Approximate Calculation of Inverse p-th Roots of Large Sparse Matrices}, DOI={<a href=\"https://doi.org/10.1145/3218176.3218231\">10.1145/3218176.3218231</a>}, booktitle={Proc. Platform for Advanced Scientific Computing (PASC) Conference}, publisher={ACM}, author={Lass, Michael and Mohr, Stephan and Wiebeler, Hendrik and Kühne, Thomas and Plessl, Christian}, year={2018} }","ama":"Lass M, Mohr S, Wiebeler H, Kühne T, Plessl C. A Massively Parallel Algorithm for the Approximate Calculation of Inverse p-th Roots of Large Sparse Matrices. In: <i>Proc. Platform for Advanced Scientific Computing (PASC) Conference</i>. ACM; 2018. doi:<a href=\"https://doi.org/10.1145/3218176.3218231\">10.1145/3218176.3218231</a>","ieee":"M. Lass, S. Mohr, H. Wiebeler, T. Kühne, and C. Plessl, “A Massively Parallel Algorithm for the Approximate Calculation of Inverse p-th Roots of Large Sparse Matrices,” presented at the Platform for Advanced Scientific Computing Conference (PASC), Basel, Switzerland, 2018, doi: <a href=\"https://doi.org/10.1145/3218176.3218231\">10.1145/3218176.3218231</a>.","apa":"Lass, M., Mohr, S., Wiebeler, H., Kühne, T., &#38; Plessl, C. (2018). A Massively Parallel Algorithm for the Approximate Calculation of Inverse p-th Roots of Large Sparse Matrices. <i>Proc. Platform for Advanced Scientific Computing (PASC) Conference</i>. Platform for Advanced Scientific Computing Conference (PASC), Basel, Switzerland. <a href=\"https://doi.org/10.1145/3218176.3218231\">https://doi.org/10.1145/3218176.3218231</a>","short":"M. Lass, S. Mohr, H. Wiebeler, T. Kühne, C. Plessl, in: Proc. Platform for Advanced Scientific Computing (PASC) Conference, ACM, New York, NY, USA, 2018.","chicago":"Lass, Michael, Stephan Mohr, Hendrik Wiebeler, Thomas Kühne, and Christian Plessl. “A Massively Parallel Algorithm for the Approximate Calculation of Inverse P-Th Roots of Large Sparse Matrices.” In <i>Proc. Platform for Advanced Scientific Computing (PASC) Conference</i>. New York, NY, USA: ACM, 2018. <a href=\"https://doi.org/10.1145/3218176.3218231\">https://doi.org/10.1145/3218176.3218231</a>."},"project":[{"grant_number":"PL 595/2-1 / 320898746","_id":"32","name":"Performance and Efficiency in HPC with Custom Computing"},{"_id":"52","name":"Computing Resources Provided by the Paderborn Center for Parallel Computing"}],"quality_controlled":"1","publisher":"ACM","_id":"1590","user_id":"15278","conference":{"end_date":"2018-07-04","location":"Basel, Switzerland","start_date":"2018-07-02","name":"Platform for Advanced Scientific Computing Conference (PASC)"},"status":"public"}]