claudio@claudioandre-desktop:~/bin/john/to_commit/src$ LWS=128 KPC=2560 ../run/john -test -fo:rar
OpenCL platform 0: AMD Accelerated Parallel Processing, 2 device(s).
Using device 0: Juniper
Compilation log: LOOP UNROLL: pragma unroll (line 259)
    Unrolled as requested!

Warning: SetCryptKeys kernel has register spilling. Lower performance is expected.

Local worksize (LWS) 128, Global worksize (KPC) 2560
Benchmarking: RAR3 (6 characters) [OpenCL]... DONE
Raw:	291 c/s real, 128000 c/s virtual
-----------

claudio@claudioandre-desktop:~/bin/john/to_commit/src$ LWS=256 KPC=2560 ../run/john -test -fo:rar
OpenCL platform 0: AMD Accelerated Parallel Processing, 2 device(s).
Using device 0: Juniper
Compilation log: LOOP UNROLL: pragma unroll (line 259)
    Unrolled as requested!

Warning: SetCryptKeys kernel has register spilling. Lower performance is expected.

Local worksize (LWS) 256, Global worksize (KPC) 2560
Benchmarking: RAR3 (6 characters) [OpenCL]... DONE
Raw:	291 c/s real, 170666 c/s virtual
-----------

claudio@claudioandre-desktop:~/bin/john/to_commit/src$ LWS=256 KPC=8192 ../run/john -test -fo:rar
OpenCL platform 0: AMD Accelerated Parallel Processing, 2 device(s).
Using device 0: Juniper
Compilation log: LOOP UNROLL: pragma unroll (line 259)
    Unrolled as requested!

Warning: SetCryptKeys kernel has register spilling. Lower performance is expected.

Local worksize (LWS) 256, Global worksize (KPC) 8192
Benchmarking: RAR3 (6 characters) [OpenCL]... DONE
Raw:	238 c/s real, 126030 c/s virtual
-----------

claudio@claudioandre-desktop:~/bin/john/to_commit/src$ LWS=256 KPC=12800 ../run/john -test -fo:rar
OpenCL platform 0: AMD Accelerated Parallel Processing, 2 device(s).
Using device 0: Juniper
Compilation log: LOOP UNROLL: pragma unroll (line 259)
    Unrolled as requested!

Warning: SetCryptKeys kernel has register spilling. Lower performance is expected.

Local worksize (LWS) 256, Global worksize (KPC) 12800
Benchmarking: RAR3 (6 characters) [OpenCL]... DONE
Raw:	292 c/s real, 182857 c/s virtual