The variable type of capacity

[cai-zhi-jie]

In the cap file, there is a float capacity:

But in the evaluator, the Gcell takes the capacity as unsigned int:

Is there a contradiction here?

[cai-zhi-jie]

Besides, the unsigned type capacity will also lead to 0 capacity when the actual capacity is a float number, which may be a bug.

[liangrj2014]

Thanks for pointing out the bugs! We will update the cap files to make sure all the capacity values are ints.

[profmadden]

Vias passing through a grid cell take a fractional amount of demand from the borders. I'd suggest making the capacity in the evaluator a float, so that the cost functions and routing problems could model things like incremental routing (where some routes and via locations are fixed -- resulting in fractional remaining capacity on the routing grid).

[liangrj2014]

That's a good point! We will make the capacity in the evaluator a float instead. Thanks for the great suggestion!