problem with tranfer time

Discussion created by pinzo on Jul 15, 2011
Latest reply on Jul 23, 2011 by pinzo


I notice that increasing the dimension of the buffer I transfer from CPU to GPU, in the transfer time appear a structure with a double peak far one from the other which one of the peaks agree with the transfer time of lower buffer. The peak that appear, instead is shifted to time 4 time bigger than normal.

I don't understand with with the same data  sometimes we have the correct transfer time while sometimes we have 4 time bigger.

nobody see something like it?