http://ericfukuda.blogspot.ca/2016/03/data-loss-when-passing-8-byte-data-with.html
http://ericfukuda.blogspot.ca/2016/03/sample-code-for-sdaccel-pipes.html
This is the simplest example of a kernel that just copies data from the input buffer to the output buffer. Use this sample for starting your own application or just for making sure your SDAccel environment is set up properly.