Inserting debug prints about amgx

[marsaev]

You mean in the library code itself or the driver application?
You should be careful with interpreting print results from withing library itself, since data layout might be different from what you expect, but you can try using functions in https://github.com/NVIDIA/AMGX/blob/master/base/include/util.h

[Tongdongq]

I meant in the library itself, so I can see what the values are between iterations.
Those functions are very helpful, thank you!