From 46fc23f91c1c5ea21bab67976773c613bd7e4ab0 Mon Sep 17 00:00:00 2001 From: Benoit Steiner Date: Fri, 19 Feb 2016 13:44:22 -0800 Subject: Print an error message to stderr when the initialization of the CUDA runtime fails. This helps debugging setup issues. --- unsupported/Eigen/CXX11/src/Tensor/TensorDeviceCuda.h | 17 ++++++++++++++--- 1 file changed, 14 insertions(+), 3 deletions(-) (limited to 'unsupported/Eigen/CXX11/src/Tensor/TensorDeviceCuda.h') diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorDeviceCuda.h b/unsupported/Eigen/CXX11/src/Tensor/TensorDeviceCuda.h index 3808eb155..c01704e56 100644 --- a/unsupported/Eigen/CXX11/src/Tensor/TensorDeviceCuda.h +++ b/unsupported/Eigen/CXX11/src/Tensor/TensorDeviceCuda.h @@ -34,12 +34,23 @@ static void initializeDeviceProp() { if (!m_devicePropInitialized) { int num_devices; cudaError_t status = cudaGetDeviceCount(&num_devices); - EIGEN_UNUSED_VARIABLE(status) - assert(status == cudaSuccess); + if (status != cudaSuccess) { + std::cerr << "Failed to get the number of CUDA devices: " + << cudaGetErrorString(status) + << std::endl; + assert(status == cudaSuccess); + } m_deviceProperties = new cudaDeviceProp[num_devices]; for (int i = 0; i < num_devices; ++i) { status = cudaGetDeviceProperties(&m_deviceProperties[i], i); - assert(status == cudaSuccess); + if (status != cudaSuccess) { + std::cerr << "Failed to initialize CUDA device #" + << i + << ": " + << cudaGetErrorString(status) + << std::endl; + assert(status == cudaSuccess); + } } m_devicePropInitialized = true; } -- cgit v1.2.3