Hi,
I am comparing two algorithms A and B.
When I run these algorithms on my own 2080 Ti GPU, algorithm A is slightly faster than B. However, when I submit them to P100 GPU on cluster, algorithm A is about 2x slower than B.
I am pretty sure that I am using the correct time measure method on GPU. Essentially I first sent two cuda timing event and then force syncronization to record the time.
The running time of algorithm B does not change much on both GPUs. However, algorithm A runs much slower on P100. Is it normal for an algorithm to have this drastical difference on difference devices?