Ernst Gunnar Gran
+4799644916
Topasbygget, 2-538, Gjøvik, Teknologiveien 22
About
Ernst Gunnar Gran is an associate professor at the Department of Information Security and Communication Technology at NTNU, where he conducts research in the intersection between high performance computing (HPC), HPC interconnection networks, enterprise data centre networks, cloud computing, and data-intensive processing in multi-clouds. In addition, Ernst holds a position as an adjunct research scientist at Simula Research Laboratory, where he until Dec. 2016 headed the Cloud department. Currently, Ernst acts as the Scientific Leader of Communication Technologies in the RCN funded infrastructure project eX3 (Experimental Infrastructure for Exploration of Exascale Computing), and he is the deliverable manager of the H2020 project Melodic (Multi-cloud Execution-ware for Large-scale Optimised Data-Intensive Computing). His teaching responsibilities include being the course coordinator of IMT2006 Computer Networks and IMT2007 Network Security.
Ernst received his M.Sc. and Ph.D. degrees in computer science from the Department of Informatics, University of Oslo, in 2007 and 2014, respectively, both theses focusing on different aspects of resource management in high performance interconnection networks. Previous project related work includes heading the RCN funded project ERAC (Efficient and Robust Architecture for Big Data Clouds), and leading the design, implementation and deployment of the multi-homed IP based research testbed NorNet Core. Ernst also has several years of experience as a system administrator and scientific programmer.
Publications
2022
-
Rocher-González, José;
Gran, Ernst Gunnar;
Reinemo, Sven- Arne;
Skeie, Tor;
Escudero-Sahuquillo, Jesús;
Garcia, Pedro J.;
Flor, Francisco J. Quiles.
(2022)
Adaptive Routing in InfiniBand Hardware.
Proceedings of the 22nd IEEE International Symposium on Cluster, Cloud and Internet Computing (CCGrid 2022).
Academic chapter/article
2021
-
Lee, Ming-Chang;
Lin, Jia-Chun;
Gran, Ernst Gunnar.
(2021)
DistTune: Distributed Fine-Grained Adaptive Traffic Speed Prediction for Growing Transportation Networks.
Transportation Research Record.
volum 2675 (10).
Academic article
-
Lee, Ming-Chang;
Lin, Jia-Chun;
Gran, Ernst Gunnar.
(2021)
How Far Should We Look Back to Achieve Effective Real-Time Time-Series Anomaly Detection?.
Advanced Information Networking and Applications: Proceedings of the 35th International Conference on Advanced Information Networking and Applications (AINA-2021), Volume 1.
Academic chapter/article
-
Lee, Ming-Chang;
Lin, Jia-Chun;
Gran, Ernst Gunnar.
(2021)
SALAD: Self-Adaptive Lightweight Anomaly Detection for Real-time Recurrent Time Series.
Proceedings of 2021 IEEE 45th Annual Computers, Software, and Applications Conference (COMPSAC).
Academic chapter/article
2020
-
Lee, Ming-Chang;
Lin, Jia-Chun;
Gran, Ernst Gunnar.
(2020)
RePAD: Real-Time Proactive Anomaly Detection for Time Series.
Proceedings of the 34th International Conference on Advanced Information Networking and Applications (AINA 2020).
Academic chapter/article
-
Lee, Ming-Chang;
Lin, Jia-Chun;
Gran, Ernst Gunnar.
(2020)
Distributed Fine-Grained Traffic Speed Prediction for Large-Scale Transportation Networks based on Automatic LSTM Customization and Sharing.
Euro-Par 2020: Euro-Par 2020: Parallel Processing.
Academic chapter/article
-
Lee, Ming-Chang;
Lin, Jia-Chun;
Gran, Ernst Gunnar.
(2020)
ReRe: A Lightweight Real-Time Ready-to-Go Anomaly Detection Approach for Time Series.
2020 IEEE 44th Annual Computers, Software, and Applications Conference (COMPSAC).
Academic chapter/article
2019
-
Dreibholz, Thomas;
Mazumdar, Somnath;
Zahid, Feroz;
Taherkordi, Amirhosein;
Gran, Ernst Gunnar.
(2019)
Mobile Edge as Part of the Multi-Cloud Ecosystem: A Performance Study.
Proceedings of the 27th Euromicro International Conference on Parallel, Distributed and Network-Based Processing (PDP).
Academic chapter/article
-
Tasoulas, Evangelos;
Zahid, Feroz;
Gran, Ernst Gunnar;
Begnum, Kyrre;
Johnsen, Bjørn Dag;
Skeie, Tor.
(2019)
Efficient routing and reconfiguration in virtualized HPC environments with vSwitch-enabled lossless networks.
Concurrency and Computation.
volum 31 (2).
Academic article
2018
-
Zahid, Feroz;
Taherkordi, Amirhosein;
Gran, Ernst Gunnar;
Skeie, Tor;
Johnsen, Bjørn Dag.
(2018)
A Self-Adaptive Network for HPC Clouds: Architecture, Framework, and Implementation.
IEEE Transactions on Parallel and Distributed Systems.
volum 29 (12).
Academic article
2017
-
Peñaranda, Roberto;
Lopez, Pedro;
Gómez, Maria E.;
Gran, Ernst Gunnar;
Skeie, Tor.
(2017)
A Fault-Tolerant Routing Strategy for K-ary N-direct S-indirect Topologies Based on Intermediate Nodes.
Concurrency and Computation.
volum 29 (13).
Academic article
-
Zahid, Feroz;
Gran, Ernst Gunnar;
Bogdanski, Bartosz;
Johnsen, Bjørn Dag;
Skeie, Tor.
(2017)
Efficient network isolation and load balancing in multi-tenant HPC clusters.
Future generations computer systems.
volum 72.
Academic article
2016
-
Peñaranda, Roberto;
Gran, Ernst Gunnar;
Skeie, Tor;
Engracia Gómez, Maria;
Lopez, Pedro.
(2016)
A New Fault-Tolerant Routing Methodology for KNS Topologies.
2nd IEEE International Workshop on High-Performance Interconnection Networks in the Exascale and Big-Data Era (HiPINEB).
Academic chapter/article
-
Qian, Liu;
Russel, Robert D.;
Gran, Ernst Gunnar.
(2016)
Improvements to the InfiniBand Congestion Control Mechanism.
IEEE 24th Annual Symposium on High-Performance Interconnects (HotI).
Academic chapter/article
-
Tasoulas, Evangelos;
Gran, Ernst Gunnar;
Skeie, Tor;
Johnsen, Bjørn Dag.
(2016)
Fast hybrid network reconfiguration for large-scale lossless interconnection networks.
2016 IEEE 15th International Symposium on Network Computing and Applications.
Academic chapter/article
-
Zahid, Feroz;
Gran, Ernst Gunnar;
Bogdanski, Bartosz Grzegorz;
Johnsen, Bjørn Dag;
Skeie, Tor;
Tasoulas, Evangelos.
(2016)
Compact network reconfiguration in fat-trees.
The Journal of Supercomputing.
volum 72 (12).
Academic article
2015
-
Escudero-Sahuquillo, Jesús;
Gran, Ernst Gunnar;
García, Pedro;
Flich, Jose;
Skeie, Tor;
Lysne, Olav;
Quiles, Francisco;
Duato, Jose.
(2015)
Efficient and Cost-Effective Hybrid Congestion Control for HPC Interconnection Networks.
IEEE Transactions on Parallel and Distributed Systems.
volum 26 (1).
Academic article
-
Tasoulas, Evangelos;
Gran, Ernst Gunnar;
Johnsen, Bjørn Dag;
Begnum, Kyrre;
Skeie, Tor.
(2015)
Towards the InfiniBand SR-IOV vSwitch architecture.
Proceedings IEEE International Conference on Cluster Computing.
volum 2015-October.
Academic article
-
Zahid, Feroz;
Gran, Ernst Gunnar;
Bogdanski, Bartosz;
Johnsen, Bjørn Dag;
Skeie, Tor.
(2015)
A weighted fat-tree routing algorithm for efficient load-balancing in InfiniBand enterprise clusters.
Proceedings of 23rd Euromicro International Conference on Parallel, Distributed, and Network-Based Processing (PDP 2015).
Academic chapter/article
-
Zahid, Feroz;
Gran, Ernst Gunnar;
Bogdanski, Bartosz;
Johnsen, Bjørn Dag;
Skeie, Tor.
(2015)
Partition-aware routing to improve network isolation in InfiniBand based multi-tenant clusters.
15th IEEE/ACM International Symposium on Cluster, Cloud and Grid Computing, CCGrid 2015, 2015, Shenzhen, 4-7 May 2015.
Academic chapter/article
-
Zahid, Feroz;
Gran, Ernst Gunnar;
Bogdanski, Bartosz;
Johnsen, Bjørn Dag;
Skeie, Tor.
(2015)
SlimUpdate: Minimal Routing Update for Performance-Based Reconfigurations in Fat-Trees.
The 1st IEEE International Workshop on High-Performance Interconnection Networks in the Exascale and Big-Data Era (HiPINEB 2015) held in conjunction with IEEE Cluster 2015.
Academic chapter/article
2012
-
Gran, Ernst Gunnar;
Reinemo, Sven-Arne;
Lysne, Olav;
Skeie, Tor;
Zahavi, Eitan;
Shainer, Gilad.
(2012)
Exploring the Scope of the InfiniBand Congestion Control Mechanism.
IEEE International Parallel & Distributed Processing Symposium.
Academic chapter/article
2008
-
Gran, Ernst Gunnar;
Reinemo, Svein Arne.
(2008)
Dragon Kill Points: Loot Distribution in Massive Multiplayer Online Role Playing Games.
Proceedings of The seventh annual Workshop on Network and Systems Support for Games (NetGames 2008.
Academic chapter/article
Scientific articles
-
Lee, Ming-Chang;
Lin, Jia-Chun;
Gran, Ernst Gunnar.
(2021)
DistTune: Distributed Fine-Grained Adaptive Traffic Speed Prediction for Growing Transportation Networks.
Transportation Research Record.
volum 2675 (10).
Academic article
-
Tasoulas, Evangelos;
Zahid, Feroz;
Gran, Ernst Gunnar;
Begnum, Kyrre;
Johnsen, Bjørn Dag;
Skeie, Tor.
(2019)
Efficient routing and reconfiguration in virtualized HPC environments with vSwitch-enabled lossless networks.
Concurrency and Computation.
volum 31 (2).
Academic article
-
Zahid, Feroz;
Taherkordi, Amirhosein;
Gran, Ernst Gunnar;
Skeie, Tor;
Johnsen, Bjørn Dag.
(2018)
A Self-Adaptive Network for HPC Clouds: Architecture, Framework, and Implementation.
IEEE Transactions on Parallel and Distributed Systems.
volum 29 (12).
Academic article
-
Peñaranda, Roberto;
Lopez, Pedro;
Gómez, Maria E.;
Gran, Ernst Gunnar;
Skeie, Tor.
(2017)
A Fault-Tolerant Routing Strategy for K-ary N-direct S-indirect Topologies Based on Intermediate Nodes.
Concurrency and Computation.
volum 29 (13).
Academic article
-
Zahid, Feroz;
Gran, Ernst Gunnar;
Bogdanski, Bartosz;
Johnsen, Bjørn Dag;
Skeie, Tor.
(2017)
Efficient network isolation and load balancing in multi-tenant HPC clusters.
Future generations computer systems.
volum 72.
Academic article
-
Zahid, Feroz;
Gran, Ernst Gunnar;
Bogdanski, Bartosz Grzegorz;
Johnsen, Bjørn Dag;
Skeie, Tor;
Tasoulas, Evangelos.
(2016)
Compact network reconfiguration in fat-trees.
The Journal of Supercomputing.
volum 72 (12).
Academic article
-
Escudero-Sahuquillo, Jesús;
Gran, Ernst Gunnar;
García, Pedro;
Flich, Jose;
Skeie, Tor;
Lysne, Olav;
Quiles, Francisco;
Duato, Jose.
(2015)
Efficient and Cost-Effective Hybrid Congestion Control for HPC Interconnection Networks.
IEEE Transactions on Parallel and Distributed Systems.
volum 26 (1).
Academic article
-
Tasoulas, Evangelos;
Gran, Ernst Gunnar;
Johnsen, Bjørn Dag;
Begnum, Kyrre;
Skeie, Tor.
(2015)
Towards the InfiniBand SR-IOV vSwitch architecture.
Proceedings IEEE International Conference on Cluster Computing.
volum 2015-October.
Academic article
Part of book/report
-
Rocher-González, José;
Gran, Ernst Gunnar;
Reinemo, Sven- Arne;
Skeie, Tor;
Escudero-Sahuquillo, Jesús;
Garcia, Pedro J.;
Flor, Francisco J. Quiles.
(2022)
Adaptive Routing in InfiniBand Hardware.
Proceedings of the 22nd IEEE International Symposium on Cluster, Cloud and Internet Computing (CCGrid 2022).
Academic chapter/article
-
Lee, Ming-Chang;
Lin, Jia-Chun;
Gran, Ernst Gunnar.
(2021)
How Far Should We Look Back to Achieve Effective Real-Time Time-Series Anomaly Detection?.
Advanced Information Networking and Applications: Proceedings of the 35th International Conference on Advanced Information Networking and Applications (AINA-2021), Volume 1.
Academic chapter/article
-
Lee, Ming-Chang;
Lin, Jia-Chun;
Gran, Ernst Gunnar.
(2021)
SALAD: Self-Adaptive Lightweight Anomaly Detection for Real-time Recurrent Time Series.
Proceedings of 2021 IEEE 45th Annual Computers, Software, and Applications Conference (COMPSAC).
Academic chapter/article
-
Lee, Ming-Chang;
Lin, Jia-Chun;
Gran, Ernst Gunnar.
(2020)
RePAD: Real-Time Proactive Anomaly Detection for Time Series.
Proceedings of the 34th International Conference on Advanced Information Networking and Applications (AINA 2020).
Academic chapter/article
-
Lee, Ming-Chang;
Lin, Jia-Chun;
Gran, Ernst Gunnar.
(2020)
Distributed Fine-Grained Traffic Speed Prediction for Large-Scale Transportation Networks based on Automatic LSTM Customization and Sharing.
Euro-Par 2020: Euro-Par 2020: Parallel Processing.
Academic chapter/article
-
Lee, Ming-Chang;
Lin, Jia-Chun;
Gran, Ernst Gunnar.
(2020)
ReRe: A Lightweight Real-Time Ready-to-Go Anomaly Detection Approach for Time Series.
2020 IEEE 44th Annual Computers, Software, and Applications Conference (COMPSAC).
Academic chapter/article
-
Dreibholz, Thomas;
Mazumdar, Somnath;
Zahid, Feroz;
Taherkordi, Amirhosein;
Gran, Ernst Gunnar.
(2019)
Mobile Edge as Part of the Multi-Cloud Ecosystem: A Performance Study.
Proceedings of the 27th Euromicro International Conference on Parallel, Distributed and Network-Based Processing (PDP).
Academic chapter/article
-
Peñaranda, Roberto;
Gran, Ernst Gunnar;
Skeie, Tor;
Engracia Gómez, Maria;
Lopez, Pedro.
(2016)
A New Fault-Tolerant Routing Methodology for KNS Topologies.
2nd IEEE International Workshop on High-Performance Interconnection Networks in the Exascale and Big-Data Era (HiPINEB).
Academic chapter/article
-
Qian, Liu;
Russel, Robert D.;
Gran, Ernst Gunnar.
(2016)
Improvements to the InfiniBand Congestion Control Mechanism.
IEEE 24th Annual Symposium on High-Performance Interconnects (HotI).
Academic chapter/article
-
Tasoulas, Evangelos;
Gran, Ernst Gunnar;
Skeie, Tor;
Johnsen, Bjørn Dag.
(2016)
Fast hybrid network reconfiguration for large-scale lossless interconnection networks.
2016 IEEE 15th International Symposium on Network Computing and Applications.
Academic chapter/article
-
Zahid, Feroz;
Gran, Ernst Gunnar;
Bogdanski, Bartosz;
Johnsen, Bjørn Dag;
Skeie, Tor.
(2015)
A weighted fat-tree routing algorithm for efficient load-balancing in InfiniBand enterprise clusters.
Proceedings of 23rd Euromicro International Conference on Parallel, Distributed, and Network-Based Processing (PDP 2015).
Academic chapter/article
-
Zahid, Feroz;
Gran, Ernst Gunnar;
Bogdanski, Bartosz;
Johnsen, Bjørn Dag;
Skeie, Tor.
(2015)
Partition-aware routing to improve network isolation in InfiniBand based multi-tenant clusters.
15th IEEE/ACM International Symposium on Cluster, Cloud and Grid Computing, CCGrid 2015, 2015, Shenzhen, 4-7 May 2015.
Academic chapter/article
-
Zahid, Feroz;
Gran, Ernst Gunnar;
Bogdanski, Bartosz;
Johnsen, Bjørn Dag;
Skeie, Tor.
(2015)
SlimUpdate: Minimal Routing Update for Performance-Based Reconfigurations in Fat-Trees.
The 1st IEEE International Workshop on High-Performance Interconnection Networks in the Exascale and Big-Data Era (HiPINEB 2015) held in conjunction with IEEE Cluster 2015.
Academic chapter/article
-
Gran, Ernst Gunnar;
Reinemo, Sven-Arne;
Lysne, Olav;
Skeie, Tor;
Zahavi, Eitan;
Shainer, Gilad.
(2012)
Exploring the Scope of the InfiniBand Congestion Control Mechanism.
IEEE International Parallel & Distributed Processing Symposium.
Academic chapter/article
-
Gran, Ernst Gunnar;
Reinemo, Svein Arne.
(2008)
Dragon Kill Points: Loot Distribution in Massive Multiplayer Online Role Playing Games.
Proceedings of The seventh annual Workshop on Network and Systems Support for Games (NetGames 2008.
Academic chapter/article
Teaching
Courses
Media
2020
-
Academic lectureLee, Ming-Chang; Lin, Jia-Chun; Gran, Ernst Gunnar. (2020) Distributed Fine-Grained Traffic Speed Prediction for Large-Scale Transportation Networks based on Automatic LSTM Customization and Sharing. The 26th International European Conference on Parallel and Distributed Computing (EURO-PAR 2020) ; 2020-08-24 - 2020-08-28.
2016
-
Academic lectureZahid, Feroz; Gran, Ernst Gunnar; Skeie, Tor. (2016) Realizing a Self-Adaptive Network Architecture for HPC Clouds. The International Conference for High Performance Computing, Networking, Storage and Analysis (SC '16) Doctoral Showcase . IEEE/ACM; Salt Lake City. 2016-11-15.