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Briefing on OASIS XLIFF OMOS TC 20160121
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Sumo

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Sumo

  1. 1. Licensing Experiences with the SUMO Toolbox SUMO Lab INTEC Broadband Communication Networks Research Group (IBCN) Department of Information Technology (INTEC) INTEC Broadband Communication Networks research group (IBCN)
  2. 2. Problem domain Automotive Chemistry Aerodynamics Electronics Metallurgy Design Simulation Model Response variables variables Fluent®, HSPICE®, CST®, Adaptive sampling Comsol®, Abaqus®, ... Adaptive Modeling width, temperature, lift, S-parameters, p angle, frequency, ... pressure, stress, ... 2 Costly p 3 p 1 p 2 p 3 p 1 Design Response variables variables Configurable Distributed Computing infrastructure Cheap Surrogate Model / Metamodel Neural network, Kriging, SVM, rational function, spline,... Sensitivity CAD/CAM/CAE Prototyping Optimization Analysis Environment Surrogate Modeling Lab – www.sumo.intec.ugent.be Department of Information Technology (INTEC) - IBCN 2
  3. 3. SUMO Toolbox  Pluggable framework for data based modeling
  4. 4. Mathematical example  Ackley function  Automatically reproduce with minimal data Surrogate Modeling Lab – www.sumo.intec.ugent.be Department of Information Technology (INTEC) - IBCN 4
  5. 5. Applications electronics telecom fluid dynamics multimedia automotive input output out = f(in) chemistry math geology art Surrogate Modeling Lab – www.sumo.intec.ugent.be Department of Information Technology (INTEC) - IBCN
  6. 6. Toolbox Users  Fuel Cell modeling  University of Toronto, Canada  Flocculant adsorption CSIRO, Australia  Rainfall runoff modeling  KU Leuven, Belgium  Ear drum modeling  University of Antwerp, Belgium  Gas Metal Arc Welding  RWTH Aachen, Germany  Electronic Packaging  North Carolina State University, Raleigh, USA Surrogate Modeling Lab – www.sumo.intec.ugent.be Department of Information Technology (INTEC) - IBCN
  7. 7. License  Development started in 2006  Since April 2008 available under IBBT license  Original motivation: create commitment, not to make money  Focus still on joint research / projects / papers 1 year, single user  200 euro for personal use, 2000 euro for commercial use  6 month “Trial” license (initially: 6 weeks)
  8. 8. License  License no great success  Handful  Too much of a barrier (“Trial”, “Commercial”)  Hoops:  Figure out download procedure  Register as user  Fill in details, OS, username, etc.  Wait for acceptance  Download + install toolbox  Wait for activation file  Install activation file  Use toolbox
  9. 9. License  Advantages  Tight control and close monitoring of users  Users tend to be more motivated  Disadvantages  Hoops  License administration costs more than it raises  Peer review critique: paper is an advert  Little incentive for users to contribute  Maintain license infrastructure → tricky  Compatability with other libraries/toolkits  Need to be careful  We had to maintain a separate “Extension Pack”  => Move to a more open model
  10. 10. License  Move to a dual license model  Open source for non-commercial use  Affero GNU General Public License (AGPLv3) – = GPLv3 + software as a service restriction – OSI Approved  Contributors must sign over their copyrights  Custom license for commercial use  ..?..  Users will still need to register  However, less questions, no activation file, faster  Advantage of knowing your users
  11. 11. License  Hopes  More users  More contributions  More feedback  Not easy  Users only complain when things don't work  Caveats  Need to carefully keep track of contributions  Still have to be careful when using other code(s)  In general: neuroticism is good
  12. 12. Questions?  Questions?

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