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    [[rockpi4 | ROCK Pi 4]] > [[rockpi4/dev | Development]] > [[rockpi4/dev/install-opencl | Install OpenCL]]

= Driver OpenCL funcionando no ROCK Pi 4 =

== Instalação do pacote libmali ==

  $ sudo apt-get install rockchip-mali-midgard14
  $ sudo apt-get install rockchip-mali-midgard-dev

==  Verificação de funcionalidade com clpeak ==

Para ver se o driver opencl funciona corretamente no ROCK Pi 4, use a ferramenta de benchmark '''clpeak'''

  $ sudo apt-get update && sudo apt-get install cmake git
  $ git clone https://github.com/krrishnarraj/clpeak
  $ cd clpeak
  $ cmake . -DCMAKE_CXX_COMPILER=g++
  $ make
  $ ./clpeak

Depois de executar o comando '''clpeak''', mostrará as seguintes saídas:

  Platform: ARM Platform
    Device: Mali-T860
      Driver version  : 1.2 (Linux ARM64)
      Compute units   : 4
      Clock frequency : 200 MHz
  
      Global memory bandwidth (GBPS)
        float   : 3.68
        float2  : 5.95
        float4  : 6.70
        float8  : 5.59
        float16 : 5.15
  
      Single-precision compute (GFLOPS)
        float   : 25.12
        float2  : 47.47
        float4  : 46.81
        float8  : 41.68
        float16 : 46.45
  
      Half-precision compute (GFLOPS)
        half   : 23.11
        half2  : 50.10
        half4  : 98.10
        half8  : 93.34
        half16 : 88.61
  
      Double-precision compute (GFLOPS)
        double   : 5.85
        double2  : 3.27
        double4  : 20.97
        double8  : 20.65
        double16 : 20.40
  
      Integer compute (GIOPS)
        int   : 22.67
        int2  : 49.85
        int4  : 47.96
        int8  : 34.30
        int16 : 47.78
  
      Transfer bandwidth (GBPS)
        enqueueWriteBuffer         : 1.24
        enqueueReadBuffer          : 1.31
        enqueueMapBuffer(for read) : 5.22
          memcpy from mapped ptr   : 2.56
        enqueueUnmap(after write)  : 5.32
          memcpy to mapped ptr     : 2.73
  
      Kernel launch latency : 307.37 us

== Solução de problemas==

* Poste seu problema no fórum: https://forum.radxa.com/c/dev