profiler + hardware counters

gistfile1.txt

halide_sgemm_notrans
 total time: 3508.201904 ms  samples: 3198  runs: 155  time/run: 22.633560 ms
 average threads used: 19.534710
 heap allocations: 155  peak heap usage: 17305600 bytes
  As:                    0.700ms   (3%)    threads: 14.474 peak: 17305600 num: 155       avg: 17305600
                                            IPC: 1.96  L1: 231707996 (77%)  LLC: 1912567 (74%)
  Atmp:                  0.505ms   (2%)    threads: 17.577 stack: 1024
                                            IPC: 2.11  L1: 194752315 (80%)  LLC: 1802731 (81%)
  result:                7.521ms   (33%)   threads: 19.817
                                            IPC: 3.14  L1: 2345267500 (79%)  LLC: 10048920 (94%)
  AB:                    13.905ms  (61%)   threads: 19.707 stack: 256
                                            IPC: 3.12  L1: 4362814881 (79%)  LLC: 18716750 (93%)