• clinfo
• clpeak
• radeontop

Check supported OpenCL extensions.

sudo apt install clinfo

clinfo

returns:

clinfo
Number of platforms:				 1
  Platform Profile:				 FULL_PROFILE
  Platform Version:				 OpenCL 2.1 AMD-APP (3513.0)
  Platform Name:				 AMD Accelerated Parallel Processing
  Platform Vendor:				 Advanced Micro Devices, Inc.
  Platform Extensions:				 cl_khr_icd cl_amd_event_callback 
 
 
  Platform Name:				 AMD Accelerated Parallel Processing
Number of devices:				 1
  Device Type:					 CL_DEVICE_TYPE_GPU
  Vendor ID:					 1002h
  Board name:					 Radeon RX 7900 XTX
  Device Topology:				 PCI[ B#12, D#0, F#0 ]
  Max compute units:				 48
  Max work items dimensions:			 3
    Max work items[0]:				 1024
    Max work items[1]:				 1024
    Max work items[2]:				 1024
  Max work group size:				 256
  Preferred vector width char:			 4
  Preferred vector width short:			 2
  Preferred vector width int:			 1
  Preferred vector width long:			 1
  Preferred vector width float:			 1
  Preferred vector width double:		 1
  Native vector width char:			 4
  Native vector width short:			 2
  Native vector width int:			 1
  Native vector width long:			 1
  Native vector width float:			 1
  Native vector width double:			 1
  Max clock frequency:				 3220Mhz
  Address bits:					 64
  Max memory allocation:			 21890072576
  Image support:				 Yes
  Max number of images read arguments:		 128
  Max number of images write arguments:		 8
  Max image 2D width:				 16384
  Max image 2D height:				 16384
  Max image 3D width:				 16384
  Max image 3D height:				 16384
  Max image 3D depth:				 8192
  Max samplers within kernel:			 29772
  Max size of kernel argument:			 1024
  Alignment (bits) of base address:		 1024
  Minimum alignment (bytes) for any datatype:	 128
  Single precision floating point capability
    Denorms:					 Yes
    Quiet NaNs:					 Yes
    Round to nearest even:			 Yes
    Round to zero:				 Yes
    Round to +ve and infinity:			 Yes
    IEEE754-2008 fused multiply-add:		 Yes
  Cache type:					 Read/Write
  Cache line size:				 64
  Cache size:					 32768
  Global memory size:				 25753026560
  Constant buffer size:				 21890072576
  Max number of constant args:			 8
  Local memory type:				 Scratchpad
  Local memory size:				 65536
  Max pipe arguments:				 16
  Max pipe active reservations:			 16
  Max pipe packet size:				 415236096
  Max global variable size:			 21890072576
  Max global variable preferred total size:	 25753026560
  Max read/write image args:			 64
  Max on device events:				 1024
  Queue on device max size:			 8388608
  Max on device queues:				 1
  Queue on device preferred size:		 262144
  SVM capabilities:				 
    Coarse grain buffer:			 Yes
    Fine grain buffer:				 Yes
    Fine grain system:				 No
    Atomics:					 No
  Preferred platform atomic alignment:		 0
  Preferred global atomic alignment:		 0
  Preferred local atomic alignment:		 0
  Kernel Preferred work group size multiple:	 32
  Error correction support:			 0
  Unified memory for Host and Device:		 0
  Profiling timer resolution:			 1
  Device endianess:				 Little
  Available:					 Yes
  Compiler available:				 Yes
  Execution capabilities:				 
    Execute OpenCL kernels:			 Yes
    Execute native function:			 No
  Queue on Host properties:				 
    Out-of-Order:				 No
    Profiling :					 Yes
  Queue on Device properties:				 
    Out-of-Order:				 Yes
    Profiling :					 Yes
  Platform ID:					 0x7f1ae3ff0eb0
  Name:						 gfx1100
  Vendor:					 Advanced Micro Devices, Inc.
  Device OpenCL C version:			 OpenCL C 2.0 
  Driver version:				 3513.0 (HSA1.1,LC)
  Profile:					 FULL_PROFILE
  Version:					 OpenCL 2.0 
  Extensions:					 cl_khr_fp64 cl_khr_global_int32_base_atomics cl_khr_global_int32_extended_atomics cl_khr_local_int32_base_atomics cl_khr_local_int32_extended_atomics cl_khr_int64_base_atomics cl_khr_int64_extended_atomics cl_khr_3d_image_writes cl_khr_byte_addressable_store cl_khr_fp16 cl_khr_gl_sharing cl_amd_device_attribute_query cl_amd_media_ops cl_amd_media_ops2 cl_khr_image2d_from_buffer cl_khr_subgroups cl_khr_depth_images cl_amd_copy_buffer_p2p cl_amd_assembly_program 

Measure speed.

sudo apt install clpeak

clpeak

returns:

Platform: AMD Accelerated Parallel Processing
  Device: gfx1100
    Driver version  : 3513.0 (HSA1.1,LC) (Linux x64)
    Compute units   : 48
    Clock frequency : 3220 MHz
 
    Global memory bandwidth (GBPS)
      float   : 742.69
      float2  : 790.45
      float4  : 825.86
      float8  : 857.23
      float16 : 878.19
 
    Single-precision compute (GFLOPS)
      float   : 34058.41
      float2  : 34472.16
      float4  : 34262.00
      float8  : 34510.05
      float16 : 32940.55
 
    Half-precision compute (GFLOPS)
      half   : 34022.91
      half2  : 65896.89
      half4  : 66729.46
      half8  : 62740.96
      half16 : 64157.85
 
    Double-precision compute (GFLOPS)
      double   : 1190.26
      double2  : 1188.94
      double4  : 1186.53
      double8  : 1180.77
      double16 : 1148.82
 
    Integer compute (GIOPS)
      int   : 8555.43
      int2  : 8381.68
      int4  : 8347.36
      int8  : 8427.74
      int16 : 8431.46
 
    Transfer bandwidth (GBPS)
      enqueueWriteBuffer         : 18.65
      enqueueReadBuffer          : 17.34
      enqueueMapBuffer(for read) : 233422.14
        memcpy from mapped ptr   : 19.16
      enqueueUnmap(after write)  : 360921.62
        memcpy to mapped ptr     : 18.79
 
    Kernel launch latency : 13.96 us

A tool to view Radeon GPU utilization, both for the total activity percent and individual blocks.

sudo apt install radeontop

radeontop