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cudacapabilitycheck.sh

@@ -0,0 +1,48 @@
+#!/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
+