An issue about the code

[LCLL]

I just use the example code in https://medium.com/@kuza55/transparent-multi-gpu-training-on-tensorflow-with-keras-8b0016fd9012

But when I changed the number of gpu(TITAN X) from 2 to 8, I found that the speed up compared with just using single gpu is almost the same. Can you give me some hints about this?

[kuza55]

Sounds like you're hitting a bottleneck somewhere; could be CPU, could be memory bandwidth, really hard to say from over here.

[freshmanfresh]

I have same problem, have you solved it? @LCLL