Skip to content

Instantly share code, notes, and snippets.

@Jiab77
Forked from eyalroz/get_cuda_sm.sh
Created February 22, 2021 21:42
Show Gist options
  • Save Jiab77/9c35d77c47ea73e6433a5b932c8bea54 to your computer and use it in GitHub Desktop.
Save Jiab77/9c35d77c47ea73e6433a5b932c8bea54 to your computer and use it in GitHub Desktop.
Shell script for determining the SM value for your (single) GPU
#!/bin/bash
#
# Prints the compute capability of the first CUDA device installed
# on the system, or alternatively the device whose index is the
# first command-line argument
device_index=${1:-0}
timestamp=$(date +%s.%N)
gcc_binary=${CMAKE_CXX_COMPILER:-$(which c++)}
cuda_root=${CUDA_DIR:-/usr/local/cuda}
CUDA_INCLUDE_DIRS=${CUDA_INCLUDE_DIRS:-${cuda_root}/include}
CUDA_CUDART_LIBRARY=${CUDA_CUDART_LIBRARY:-${cuda_root}/lib64/libcudart.so}
generated_binary="/tmp/cuda-compute-version-helper-$$-$timestamp"
# create a 'here document' that is code we compile and use to probe the card
source_code="$(cat << EOF
#include <stdio.h>
#include <cuda_runtime_api.h>
int main()
{
cudaDeviceProp prop;
cudaError_t status;
int device_count;
status = cudaGetDeviceCount(&device_count);
if (status != cudaSuccess) {
fprintf(stderr,"cudaGetDeviceCount() failed: %s\n", cudaGetErrorString(status));
return -1;
}
if (${device_index} >= device_count) {
fprintf(stderr, "Specified device index %d exceeds the maximum (the device count on this system is %d)\n", ${device_index}, device_count);
return -1;
}
status = cudaGetDeviceProperties(&prop, ${device_index});
if (status != cudaSuccess) {
fprintf(stderr,"cudaGetDeviceProperties() for device ${device_index} failed: %s\n", cudaGetErrorString(status));
return -1;
}
int v = prop.major * 10 + prop.minor;
printf("%d\\n", v);
}
EOF
)"
echo "$source_code" | $gcc_binary -x c++ -I"$CUDA_INCLUDE_DIRS" -o "$generated_binary" - -x none "$CUDA_CUDART_LIBRARY"
# probe the card and cleanup
$generated_binary
rm $generated_binary
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment