if i run my application as one thread per SM it work fine.
if i run my application as multithread per SM it get no result.
the code is too complex to post here. :-/
there should be a problem in the multithreading-process, but i don’t understand why it work fine if only one thread work on it’s own SM. in my case (an Geforce 560 TI) there are 8 SM’s, so there only work 8 threads at the same time.