1 files changed, 71 insertions, 0 deletions
diff --git a/Tests/CudaOnly/GPUDebugFlag/main.cu b/Tests/CudaOnly/GPUDebugFlag/main.cu
new file mode 100644
index 000000000..1f3fc129f
--- /dev/null
+++ b/Tests/CudaOnly/GPUDebugFlag/main.cu
@@ -0,0 +1,71 @@
+#include <cuda.h>
+#include <cuda_runtime.h>
+#include <iostream>
+
+static __global__ void debug_kernel(bool* has_debug)
+{
+// Verify using the return code if we have GPU debug flag enabled
+#if defined(__CUDACC__) && defined(__CUDACC_DEBUG__)
+  *has_debug = true;
+#else
+  *has_debug = false;
+#endif
+}
+
+int choose_cuda_device()
+{
+  int nDevices = 0;
+  cudaError_t err = cudaGetDeviceCount(&nDevices);
+  if (err != cudaSuccess) {
+    std::cerr << "Failed to retrieve the number of CUDA enabled devices"
+              << std::endl;
+    return 1;
+  }
+  for (int i = 0; i < nDevices; ++i) {
+    cudaDeviceProp prop;
+    cudaError_t err = cudaGetDeviceProperties(&prop, i);
+    if (err != cudaSuccess) {
+      std::cerr << "Could not retrieve properties from CUDA device " << i
+                << std::endl;
+      return 1;
+    }
+    if (prop.major >= 3) {
+      err = cudaSetDevice(i);
+      if (err != cudaSuccess) {
+        std::cout << "Could not select CUDA device " << i << std::endl;
+      } else {
+        return 0;
+      }
+    }
+  }
+
+  std::cout << "Could not find a CUDA enabled card supporting compute >=3.0"
+            << std::endl;
+
+  return 1;
+}
+
+int main(int argc, char** argv)
+{
+  bool* has_debug;
+  cudaError_t err = cudaMallocManaged(&has_debug, sizeof(bool));
+  if (err != cudaSuccess) {
+    std::cerr << "cudaMallocManaged failed:\n"
+              << "  " << cudaGetErrorString(err) << std::endl;
+    return 1;
+  }
+
+  debug_kernel<<<1, 1>>>(has_debug);
+  err = cudaDeviceSynchronize();
+  if (err != cudaSuccess) {
+    std::cerr << "debug_kernel: kernel launch shouldn't have failed\n"
+              << "reason:\t" << cudaGetErrorString(err) << std::endl;
+    return 1;
+  }
+  if (*has_debug == false) {
+    std::cerr << "debug_kernel: kernel not compiled with device debug"
+              << std::endl;
+    return 1;
+  }
+  return 0;
+}