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GDR 07, Bordeaux, 23/11/2007 Page 1
Prof. Guy Vandenbosch, Prof. R. Gillard
K.U. Leuven, Belgium, IETR Rennes, France
Computational Electromagneticsin Europe:
Competition versus cooperation
GDR 07, Bordeaux, 23/11/2007 Page 2
Contents
The situationThe problemThe ASI questionsThe partnersThe ACE answersThe future
GDR 07, Bordeaux, 23/11/2007 Page 3
The situation the commercial software vendors: competition in-house developed codes by (larger) companies
– Thales (France), France Telecom (France), Saab Ericsson Space AB (Sweden), …
– in many cases mainly for internal use
– very interested in standardisation a rich wealth of in-house made codes at
universities and research institutes– sometimes very specialized– in many cases outperforming the commercial codes …– order of magnitude: a few 100 research groups in Europe– enormous investment of time and money
– very interested in cooperation
GDR 07, Bordeaux, 23/11/2007 Page 4
The problem
the return on this huge investment of time and money is low
–example of Green’s functions–example of matrix solvers
GDR 07, Bordeaux, 23/11/2007 Page 5
The questions
– What do we have ?»inventory
–What is the quality ?»benchmarking
–How can we make it better ?»software standardization and integration
GDR 07, Bordeaux, 23/11/2007 Page 6
The partners
–universities: 14»KUL (B), CNRS-LEAT (F), IETR (F), SAPIENZA
(I), POLITO (I), UNIFI (I), UNISI (I), UPC (E), UPM (E), UPV (E), CHALMERS (S), EPFL (CH), UOB (UK), ENST (F)
– industry: 7» IDS (I), TICRA (DK), FT(F), TAS (F), IMST
(D), FOI (S), SATIMO (F)
GDR 07, Bordeaux, 23/11/2007 Page 7
The ACE answers:
Inventory
description of the software of the partners
agreed formatopen to anyone at the VCE
(www.antennasvce.org)
GDR 07, Bordeaux, 23/11/2007 Page 8
The ACE answers:
Benchmarking
well-defined agreed democratic protocols
implemented through SOFTLAB, a web based application within the VCE
open to anyone, after registration within the ACE community
www.antennasvce.org
GDR 07, Bordeaux, 23/11/2007 Page 9
The ACE answers:
Benchmarking
first run– elements, open– 14 partners, 18 tools, 36 simulations
second run– finite arrays, blind– 8 structures, 14 partners + 2 vendors, 17
tools, 28 simulations
third run (still going on)– environment– 5 structures
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Benchmarking
spherical conformal array large reflect array
printed array with tight coupling dipole with lossy cylinder
array with waveguide feed
GDR 07, Bordeaux, 23/11/2007 Page 11
Where do we stand … Benchmarking
Rangestar UltimaWorld GSM antenna
38 mm x 12 mm
GDR 07, Bordeaux, 23/11/2007 Page 12
The ACE answers:
Integrationstandardization: cooperation with ESA-
ESTEC– 6 Data Dictionaries: GFs, currents and meshes,
near fields, modes, S-parameters, far fields– EDI routines for currents and meshes, near fields,
and far fields» fortran, C, matlab
– adopted as standard by TICRA, SATIMO, THALES + ESA-ESTEC, SAAB-ERICSSON
software library:– implementation of EDI routines in software of 15
partners– ca. 10 integration projects
GDR 07, Bordeaux, 23/11/2007 Page 13
The ACE answers:
Integrationexamples of integration projects:
– “Integration of UPC-UAB fast solvers into the antenna simulation software of UNEX-UPM, KUL, UPV, and EPFL ACE partners”
– “Fast analysis of large finite arrays with a combined multiresolution – fast MoM based techniques”
– “Applications of the DG-FDTD method”
GDR 07, Bordeaux, 23/11/2007 Page 14
Integration activity betweenKUL (Belgium) and POLITO (Italy) (2)
Zno MR6.6870e+5
ZMR 17.3030
condition number ofcoupling matrix
GDR 07, Bordeaux, 23/11/2007 Page 15
EurAAP
Deliverable of ACE
European Association on Antennas and Propagation
Newly formed non-profit organization, based in Brussels
GDR 07, Bordeaux, 23/11/2007 Page 16
Proposal for a Softwaredepartment within EuRAAP
WG 1 on standardization WG 2 on benchmarking WG 3 on European Software Library
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WG 1: Standardization
an already committed group– (KUL, IDS, SATIMO, THALES, TICRA) + (ERICSSON +
ESA-ESTEC + IT-Link)
–open for other partners concrete plan with goals, time schedule,
actions required, … organized around 4 topics– short term evolution: TICRA– standardization: SATIMO– user community: KUL– long-term management: IDS
GDR 07, Bordeaux, 23/11/2007 Page 18
WG 1: Standardization
“survival” budget: 11 KEuro– my personal opinion based on 4 years ACE experience– maintainance of and help desk for EDI routines:
» in case VCE is up and running» absolute minimum 1-2 pm / year (11 - 22 kEuro)
– further extension of EDI:» upgrade of existing and selection of other DDs
this is a matter of group discussion in the right forum my proposal: specific session at EuCAP budget: 0 KEuro
» implementation of EDI routines for these DDs order of magnitude: 1 – 2 pm per DD (11 – 22 KEuro)
potential income: yes– licensing, support fee, …
academic output: not really
GDR 07, Bordeaux, 23/11/2007 Page 19
WG 2: Benchmarking
a protocol on a periodic (yearly) benchmark cycle has been approved within the ASI community– organized around EuCAP– democratic selection process of structures to consider– SOFTLAB is being extended with the necessary features
“survival” budget: 0 KEuro– further extension of SOFTLAB ?– the organization around EuCAP (and COST ASSIST ?)
eliminates most of the possible costs– can be completely organized based on commitment, based
on the ACE experience, this is very well feasible
potential income: not really academic output: yes
GDR 07, Bordeaux, 23/11/2007 Page 20
WG 3: Antenna Software Library
within ASI up to now only the direct way has been followed in all integration projects
integratedsoftware
isolatedsoftware
EDI in softwaretriangle of
effort
GDR 07, Bordeaux, 23/11/2007 Page 21
WG 3: Antenna Software Library distributed library
– This is why we do it …this produces the scientific, innovating papers» established, large academic interest
integration projects of ACE: “natural drive” of the partners
» already several papers at EuCAP 2006 and 2007
“survival” budget: 0 KEuro– bilateral or multilateral– can be connected with WG 5 of COST ASSIST: no real
cost– difference with situation before ACE: integration is
much easier with the EDI
potential income: not really academic output: huge possibilities
GDR 07, Bordeaux, 23/11/2007 Page 22
WG 3: Antenna Software Library
“downloadable” library– Advantages
» reduced development time for new Ph.D. students, research groups
» reduced dependency of research on commercial tools– More difficult issues
» competition for commercial solvers» what do we do for researchers outside Europe
“survival” budget: ???– start with “current and field viewer”, “mesher”, …
potential income: absolutely– licensing, support fee, …
academic output: huge possibilities
GDR 07, Bordeaux, 23/11/2007 Page 23
Bad antenna joke …
Two antennas met on the roof and felt they were “matched” to each other. So they decided to get married. The wedding ceremony was ok, but the reception was excellent …