Dear GAMS experts,
I have a symmetry issue in my MIP (VRPT - 3-index formulation). Ist there any option in GAMS to “turn on” symmetry breaking preprocessing? I saw some on the IBM ILOG page:
http://pic.dhe.ibm.com/infocenter/odmeinfo/v3r4/index.jsp?topic=%2Filog.odms.ide.odme.help%2FContent%2FOptimization%2FDocumentation%2FODME%2F_pubskel%2FODME_pubskels%2Fstartall_ODME34_Eclipse1590.html
Best,
Alena
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Alena,
The corresponding GAMS/Cplex option is called ‘symmetry’. Please check the Introduction chapter of the GAMS Solvers Guide (http://www.gams.com/dd/docs/solvers/allsolvers.pdf) how to use solver options in GAMS.
Hope this helps,
Michael Bussieck - GAMS World Coordinator
On Friday, September 6, 2013 4:07:56 AM UTC-4, miainigioi wrote:
Dear GAMS experts,
I have a symmetry issue in my MIP (VRPT - 3-index formulation). Ist there any option in GAMS to “turn on” symmetry breaking preprocessing? I saw some on the IBM ILOG page:
http://pic.dhe.ibm.com/infocenter/odmeinfo/v3r4/index.jsp?topic=%2Filog.odms.ide.odme.help%2FContent%2FOptimization%2FDocumentation%2FODME%2F_pubskel%2FODME_pubskels%2Fstartall_ODME34_Eclipse1590.html
Best,
Alena
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Hi Michael,
this is it and it works. Thanks a lot!
Best,
Alena
Am Montag, 9. September 2013 10:21:08 UTC+2 schrieb Michael Bussieck:
Alena,
The corresponding GAMS/Cplex option is called ‘symmetry’. Please check the Introduction chapter of the GAMS Solvers Guide (http://www.gams.com/dd/docs/solvers/allsolvers.pdf) how to use solver options in GAMS.
Hope this helps,
Michael Bussieck - GAMS World Coordinator
On Friday, September 6, 2013 4:07:56 AM UTC-4, miainigioi wrote:
Dear GAMS experts,
I have a symmetry issue in my MIP (VRPT - 3-index formulation). Ist there any option in GAMS to “turn on” symmetry breaking preprocessing? I saw some on the IBM ILOG page:
http://pic.dhe.ibm.com/infocenter/odmeinfo/v3r4/index.jsp?topic=%2Filog.odms.ide.odme.help%2FContent%2FOptimization%2FDocumentation%2FODME%2F_pubskel%2FODME_pubskels%2Fstartall_ODME34_Eclipse1590.html
Best,
Alena
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