I want it to change the multiplier from 0 to 1 to come up with a desired total. In this case the desired amount is 802. This is entered as it own field. In this case it is the sum of the last two records. The constraints are the multiplier has to be between 0 and 1 and must be an integer. The objective cell target value is zer0 (sum of total column less desired amount). Instead of a multiplier of 1 for the last two rows, I am getting a non-integer value with a total of exactly double the 802. Is this a bug or am I doing something incorrect?

Value Multiplier Total

4444 .36063609 1604

15151 0 0

777 0 0

25 0 0

I am really surprised by the great results of your work. I have been using OpenSolver for some time (large Stock Cutting problems) it works with good results.

I also noticed that a large part of the CBC.exe calculation is consumed by process of finding a possible solution. However, in my case, knowing the specificity of my problem, I can easily generate a feasible solution – being a good starting point. The question is whether and how to define the initial solution that will be used by OpenSolver (and later by CBC.exe -mips)?

Thank you in advance for your respose.

]]>I have a LP problem with ~2400 variables & ~500 constraints. Would opensolver be able to handle this ? I am not able to find anywhere the capabilities of open solver on this page.

Regards, Shantanu

]]>I have been using Open solver for many weks , regularly and today it suddenly broke down and does not work an more

So I tried various chnges , but do ot recover working

Nothing happens any more when I click solve model

I heve been trying all kinds of solver in the dropdown list

Please can you help me because i do rel on it know

Thanks in advance

Etienne