Get GPU Properties

Mar 11, 2024 gpu basics tech

Table of Contents

In `cuda_runtime.h`, there are several APIs for retrieving properties for the installed GPU.

cudaDeviceGetAttribute(int* value, cudaDeviceAttr attr, int device): a C api
cudaGetDeviceProperties ( cudaDeviceProp* prop, int device ) : a C++ api

Here is the code of the example.

On a Nvidia GTX 3080 GPU, the properties are as below:

Device 0 properties:
  Max block dimensions: 1024 x 1024 x 64
  Max grid dimensions: 2147483647 x 65535 x 65535
  Shared memory bank size: 4 bytes
  Max shared memory per block: 49152 bytes
  Max registers per block: 65536
  Warp size: 32
  Multiprocessor count: 68
  Max resident threads per multiprocessor: 1536 = 48 warps
  L2 cache size: 5242880 bytes
  Global L1 cache supported: yes
  Total global memory: 9 GB
  Processor clock: 1 MHZ
  Memory clock: 9 MHZ