Hi all,
i am solving several problems MINLP with BONMIN, using the Java API.
I wanted to compare the runtime with the increased size of the problem. (Y axis is the Spacerestriction and X axis are the products)
Strangely i have insane peaks in the runtime results. (Values are in seconds).
Now if i calculate the exact same problem in Gams, using the gdx file created in java, the runtime is back to the normal size… e.g. from 1000 to 60 seconds.
Solving the same problem twice using java the runtime is 1000 seconds both times.
I wonder if anyone might have a suggestion to why this happens.
I also wonder why the runtime always peaks at 1000 seconds. Is there a exit criteria i didnt see?
I am using Bonmin BB with standard options.
Thank you for any suggestions!
Max
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added the picture correctly.
I also wonder why the runtime always peaks at 1000 seconds. Is there a exit criteria i didnt see?
nevermind about that… found out about gams reslim
On Wednesday, May 29, 2013 8:51:59 PM UTC+2, reisc...@gmail.com wrote:
Hi all,
i am solving several problems MINLP with BONMIN, using the Java API.
I wanted to compare the runtime with the increased size of the problem. (Y axis is the Spacerestriction and X axis are the products)
Strangely i have insane peaks in the runtime results. (Values are in seconds).
Now if i calculate the exact same problem in Gams, using the gdx file created in java, the runtime is back to the normal size… e.g. from 1000 to 60 seconds.
Solving the same problem twice using java the runtime is 1000 seconds both times.
I wonder if anyone might have a suggestion to why this happens.
I also wonder why the runtime always peaks at 1000 seconds. Is there a exit criteria i didnt see?
I am using Bonmin BB with standard options.
Thank you for any suggestions!
Max
–
Max,
There is no obvious reason why the runtime should be so much higher if you run GAMS from Java. Can you please compare the logs of the pure GAMS run and the Java/GAMS run for one of the critical problems and check if you see any difference there?
Best regards,
Lutz
On 5/30/2013 3:01 AM, reischl.max@gmail.com wrote:
added the picture correctly.
I also wonder why the runtime always peaks at 1000 seconds. Is there
a exit criteria i didnt see?
nevermind about that… found out about gams reslim
On Wednesday, May 29, 2013 8:51:59 PM UTC+2, reisc...@gmail.com wrote:
Hi all,
i am solving several problems MINLP with BONMIN, using the Java API.
I wanted to compare the runtime with the increased size of the
problem. (Y axis is the Spacerestriction and X axis are the products)
Strangely i have insane peaks in the runtime results. (Values are in
seconds).
Now if i calculate the exact same problem in Gams, using the gdx
file created in java, the runtime is back to the normal size... e.g.
from 1000 to 60 seconds.
Solving the same problem twice using java the runtime is 1000
seconds both times.
I wonder if anyone might have a suggestion to why this happens.
I also wonder why the runtime always peaks at 1000 seconds. Is there
a exit criteria i didnt see?
I am using Bonmin BB with standard options.
Thank you for any suggestions!
Max
–
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Lutz Westermann LWestermann@gams.com
GAMS Development Corporation GAMS Software GmbH
1217 Potomac St. NW, Eupener Str. 135-137
Washington DC, 20007, USA 50933 Cologne, Germany
Fon/Fax: +1 202 342-0180/1 Fon/Fax: +49 221 949-9170/1
http://www.gams.com http://www.gams.de
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