OpenCL performance on intel i5-11400 by Clpeak

Platform: Intel(R) CPU Runtime for OpenCL(TM) Applications
  Device: 11th Gen Intel(R) Core(TM) i5-11400 @ 2.60GHz
    Driver version  : 18.1.0.0920 (Linux x64)
    Compute units   : 12
    Clock frequency : 2600 MHz

    Global memory bandwidth (GBPS)
      float   : 15.99
      float2  : 17.11
      float4  : 13.20
      float8  : 12.18
      float16 : 11.62

    Single-precision compute (GFLOPS)
      float   : 400.87
      float2  : 788.43
      float4  : 776.47
      float8  : 774.72
      float16 : 771.39

    No half precision support! Skipped

    Double-precision compute (GFLOPS)
      double   : 396.97
      double2  : 389.92
      double4  : 389.38
      double8  : 388.42
      double16 : 283.72

    Integer compute (GIOPS)
      int   : 146.78
      int2  : 290.23
      int4  : 399.68
      int8  : 180.19
      int16 : 185.39

    Integer compute Fast 24bit (GIOPS)
      int   : 113.77
      int2  : 182.26
      int4  : 193.19
      int8  : 191.54
      int16 : 198.80

    Integer char (8bit) compute (GIOPS)
      char   : 123.82
      char2  : 235.34
      char4  : 374.39
      char8  : 367.15
      char16 : 390.30

    Integer short (16bit) compute (GIOPS)
      short   : 250.93
      short2  : 482.91
      short4  : 840.59
      short8  : 281.22
      short16 : 336.37

    Transfer bandwidth (GBPS)
      enqueueWriteBuffer              : 7.22
      enqueueReadBuffer               : 7.64
      enqueueWriteBuffer non-blocking : 7.23
      enqueueReadBuffer non-blocking  : 7.62
      enqueueMapBuffer(for read)      : 8349.47
        memcpy from mapped ptr        : 7.64
      enqueueUnmap(after write)       : 7814.71
        memcpy to mapped ptr          : 7.24

    Kernel launch latency : 1.57 us