I don’t think opencv_test_dnn_superres uses the CUDA backend. You can force it to do so by adding
dnn_sr->setPreferableBackend(dnn::DNN_BACKEND_CUDA);
dnn_sr->setPreferableTarget(dnn::DNN_TARGET_CUDA);
here. For me this passed the tests without any problems.
I then tried the model you are using downlaode from
and placed in the PATH_TO_EXTRA/testdata/cv/dnn_suprres directory with the following small changes
and again had not issues. I would therefore suggest you either perform these tests (which you might not want to because you will have to recompile) or run opencv_test_dnn as described below to see if any models which use the cuDNN work on your setup.
To test opencv_test_dnn you first you need to download a model. I suggest GoogLeNet as its relatively small.
When you have the extra repo and you have added the path
export OPENCV_TEST_DATA_PATH=<PATH_TO_EXTRA/testdata>
you will need to go to the PATH_TO_EXTRA/testdata/dnn folder and download the googlenet model using
python download_models.py GoogleNet
Then you can execute the test as
./opencv_test_dnn --gtest_filter=DNNTestNetwork.GoogLeNet/0
and hopefully the output should be something similar to
CTEST_FULL_OUTPUT
OpenCV version: 4.7.0-dev
OpenCV VCS version: 4.7.0-98-g0052d46b8e
Build type: Release
Compiler: /usr/bin/c++ (ver 9.4.0)
Parallel framework: pthreads (nthreads=20)
CPU features: SSE SSE2 SSE3 *SSE4.1 *SSE4.2 *FP16 *AVX *AVX2 *AVX512-SKX?
Intel(R) IPP version: ippIP AVX2 (l9) 2020.0.0 Gold (-) Oct 19 2019
Intel(R) IPP features code: 0x8000
OpenCL is disabled
TEST: Skip tests with tags: 'mem_6gb', 'verylong', 'dnn_skip_opencv_backend', 'dnn_skip_cpu', 'dnn_skip_ocl', 'dnn_skip_ocl_fp16', 'dnn_skip_cuda', 'dnn_skip_cuda_fp32', 'dnn_skip_cuda_fp16', 'dnn_skip_onnx_conformance', 'dnn_skip_parser'
Note: Google Test filter = DNNTestNetwork.GoogLeNet/0
[==========] Running 1 test from 1 test case.
[----------] Global test environment set-up.
[----------] 1 test from DNNTestNetwork
[ RUN ] DNNTestNetwork.GoogLeNet/0, where GetParam() = CUDA/CUDA
[ OK ] DNNTestNetwork.GoogLeNet/0 (8183 ms)
[----------] 1 test from DNNTestNetwork (8183 ms total)
[----------] Global test environment tear-down
[==========] 1 test from 1 test case ran. (8183 ms total)
[ PASSED ] 1 test.