I don't mean this to be adversarial, but what exactly is it you do that would not be sped up by checking someone else's results directly before fiddling around and then trying out your own implementation?
But that's my point: their results are not that important to me.
As an example, recently I saw a paper on NN weight quantization, which had a very interesting idea, but the results were not impressive. I don't remember if they had any code published or not, but it didn't matter - I wanted to see what kind of results I'd get if I implemented it. Turned out it works really well, much better than what they reported in the paper.
