benchmark error

[zhaishengfu]

Hi all， I run the benchmark_cubas.cu and find a really big problem.
when the N = 8192, the result is
success=1
success=1
that is, both xnor, gemm and cublas is correct
but when i change the N to other number(128，100,192,1192,2192,1000, 8195 and so on), the first is always wrong and the second is almost correct(only 100 is wrong), that is, the result is :
success = 0;
success =1
so, is this a problem??why only 8192 is possible??
anther auestion.
when i change the grid and block size to 1, the xnor result is also wrong(success = 0).
so, i think maybe the xnor code is not universal .It only works for some limited settings. am i wrong?
looking forward to your reply

[MatthieuCourbariaux]

I think you have to keep N a power of 2 (e.g. 1024 and 2048 might work).

Our XNOR kernel indeed only works for some limited settings.
It was only meant to be a proof of concept.