Hi all,
Has any of you worked with a checkpoint (see transport5 example) in combination with a GAMS database? Or with a modelinstance (transport7) in combination with a database.
I’m using a database as it provides an organized way to send the data to GAMS. Now I would like to perform a sensitivity analysis and change the value for 1 specific parameter. To speed-up the calculation process, I think working with a checkpoint could be useful. When implementing adding this checkpoint to the run statement, the database is merged, which provides an error in GAMS.
Clearing the database before the second run command, seems to have no effect. Does somebody has experience with this?
Or do you have an other method to do a fast sensitivity analysis while using databases?
Kind regards,
Andreas
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Andreas,
the use case you describe sounds indeed like one might try the GamsModelinstance.
Since you have already found the trnsport7 example, you might want to double check
if your code is correct.
It would be helpful if you could provide some (running) code. That would make it
much more easy to find out whats going wrong.
Best
Clemens
On 4/13/2015 6:03 PM, Andreas Belderbos wrote:
Hi all,
Has any of you worked with a checkpoint (see transport5 example) in combination with a GAMS database? Or with a modelinstance (transport7) in combination with a database.
I’m using a database as it provides an organized way to send the data to GAMS. Now I would like to perform a sensitivity analysis and change the value for 1 specific parameter. To speed-up the calculation process, I think working with a checkpoint could be useful. When implementing adding this checkpoint to the run statement, the database is merged, which provides an error in GAMS.
Clearing the database before the second run command, seems to have no effect. Does somebody has experience with this?
Or do you have an other method to do a fast sensitivity analysis while using databases?
Kind regards,
Andreas
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