None of the benchmarks in the SNU OpenCL NAS Parallel Benchmarks are working.
They're available from
http://aces.snu.ac.kr/Center_for_Manycore_Programming/SNU_NPB_Suite.html

I've got a Radeon 5830 and have installed Mesa from git using the instructions
at http://dri.freedesktop.org/wiki/GalliumCompute/

Most of the benchmarks fail at
  Running pass 'AMDGPU DAG->DAG Pattern Instruction Selection' on function

The FFT benchmark fails at
  error: parameter may not be qualified with an address space

I do have some other test cases that are working for me, including the ones
from http://cgit.freedesktop.org/~tstellar/opencl-example/