CUDA 12.5 error: Lambdas __device__ on Thrust requires __host__ #1043
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oierlauzi
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Oct 22, 2025
albertmena
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The primary CUDA 12.5 error involves extended
__device__lambda functions passed to host-side Thrust functions, which now strictly require__host__ __device__for return type inference.Error example:
/opt/scipion/software/em/xmippSrc-v3.25.06.0-Rhea/src/xmipp/libraries/reconstruction_cuda/cuda_volume_restoration_kernels.cpp:289:16: required from here\nnvcc_internal_extended_lambda_implementation:361:146: error: static assertion failed: Attempt to use an extended __device__ lambda in a context that requires querying its return type in host code. Use a named function object, a __host__ __device__ lambda, or cuda::proclaim_return_type instead.\nnvcc_internal_extended_lambda_implementation:361:146: note: '