Can run ArrayFire on my CPU only, not on the intergrated GPU

[Pietro Mele]

I could build all the examples of the ArrayFire project (except the CUDA ones, having an AMD APU). However, just the ones running on the CPU work correctly; the GPU based ones have issues.

Example:

    benchmarks> ls

    CMakeFiles  blas_cpu  cg_cpu  cmake_install.cmake  fft_cpu  fft_opencl  Makefile  pi_cpu

This is the CPU version:

    benchmarks> ./fft_cpu 

    ArrayFire v3.8.0 (CPU, 64-bit Linux, build d99887a)

    [0] AMD: AMD Ryzen 7 2700U with Radeon Vega Mobile Gfx  Benchmark N-by-N 2D fft

     128 x  128:     3 Gflops

     256 x  256:     4 Gflops

     512 x  512:     4 Gflops

    1024 x 1024:     4 Gflops

    2048 x 2048:     5 Gflops

    4096 x 4096:     5 Gflops

This is the GPU version (running in verbose mode):

benchmarks> AF_PRINT_ERRORS=1 AF_JIT_KERNEL_TRACE=stdout AF_TRACE=all ./fft_opencl  
[platform][1626887645][022941] [ ../src/backend/common/DependencyModule.cpp:99 ] Attempting to load: libforge.so
[platform][1626887645][022941] [ ../src/backend/common/DependencyModule.cpp:102 ] Found: libforge.so
[platform][1626887645][022941] [ ../src/backend/opencl/device_manager.cpp:218 ] Found 1 OpenCL platforms
[platform][1626887645][022941] [ ../src/backend/opencl/device_manager.cpp:230 ] Found 1 devices on platform Clover
[platform][1626887645][022941] [ ../src/backend/opencl/device_manager.cpp:235 ] Found device AMD Radeon(TM) Vega 3 Graphics (RAVEN, DRM 3.40.0, 5.12.11-zen1-1-zen, LLVM 12.0.0) on platform
Clover
[platform][1626887645][022941] [ ../src/backend/opencl/device_manager.cpp:240 ] Found 1 OpenCL devices
[platform][1626887646][022941] [ ../src/backend/opencl/device_manager.cpp:335 ] Default device: 0
ArrayFire v3.8.0 (OpenCL, 64-bit Linux, build d99887a)
[0] Clover: AMD Radeon(TM) Vega 3 Graphics (RAVEN, DRM 3.40.0, 5.12.11-zen1-1-zen, LLVM 12.0.0), 3072 MB
Benchmark N-by-N 2D fft
128 x  128: [mem][1626887646][022941] [ ../src/backend/opencl/memory.cpp:200 ] nativeAlloc: 64 KB 0x56337cfc7e50
[jit][1626887646][022941] [ ../src/backend/opencl/compile_module.cpp:254 ] {9348653917523335434  : loaded from /home/pietrom/.arrayfire/KER9348653917523335434_CL_4098_AMD_RADEON(TM)_VEGA_3_
GRAPHICS_(RAVEN,_DRM_3.40.0,_5.12.11-ZEN1-1-ZEN,_LLVM_12.0.0)_AF_38.bin for AMD Radeon(TM) Vega 3 Graphics (RAVEN, DRM 3.40.0, 5.12.11-zen1-1-zen, LLVM 12.0.0) }

Using the GPU, the execution is stuck after the last message printed above.

Is this a common issue? Could have I done something wrong? Could be anything missing on my system?