james@hull:~/sandbox/aj$ ./raytrace 6400 3600
   1: 5938
   2: 2976
   3: 3643
   4: 2969
   5: 2993
   6: 3072
   8: 3242
   9: 3024
  10: 2975
  12: 2966
  15: 3081
  16: 2970
  18: 3023
  20: 2989
  24: 2984
  25: 2969
  30: 2968
  36: 2966
  40: 2992
  45: 2971
  48: 2974
  50: 2964
  60: 2992
  72: 2974
  75: 2983
  80: 2972
  90: 2969
 100: 2966
 120: 2984
 144: 2973
 150: 2977
 180: 2976
 200: 2982
 225: 2984
 240: 2985
 300: 2994
terminate called after throwing an instance of 'boost::thread_resource_error'
  what():  boost::thread_resource_error
Aborted