optical flow example Optimizer FAILED

[Altera_Forum]

Hi, 

 I was trying to run the optical flow example on Sockit. When I compile the kernel with the full flow(without -c), I can generate the kernel file.(about 25mins)  But if I want to run the first stage only(with -c) or to profile the kernel with(--profile), after quite a long time compiling(2hours or more), then I got an error:  "Optimizer FAILED!   Refer to optical_folw/optical_flow.log for details."  I checked the log file, but it is empty.  I know with "--profile", it is much slower and may use more resources, but if I remember correctly, this kernel I generated the first time only consumed around 45%. So there should be enough resources, right?  But for the first stage compiling, I really don't know why I can not get the estimated resource usage report. (PS: I tried this with -c two or three times, all optimizer failed.)   Thanks Shaodong

[Altera_Forum]

Hello Shaodong 

 "Optimizer FAILED" message when compiling optical_flow.cl with --profile seems to be a bug in the compiler. We will work on fixing this for a future release of the compiler. Thank you for reporting it.  To get estimated resource usage, make sure to supply --report option to aoc. Note that the estimated report is generated after the optimizer.