No CUDA-capable device ist detected

[Andreas ten Pas]

I've pulled the caffe repo today, but now make runtest fails:

F0805 17:44:16.708216 29544 syncedmem.cpp:57] Check failed: error == cudaSuccess (38 vs. 0)  no CUDA-capable device is detected

*** Check failure stack trace: ***

    @     0x2aeb68de0daa  (unknown)

    @     0x2aeb68de0ce4  (unknown)

    @     0x2aeb68de06e6  (unknown)

    @     0x2aeb68de3687  (unknown)

    @     0x2aeb6a724f7c  caffe::SyncedMemory::gpu_data()

    @     0x2aeb6a6e1542  caffe::Blob<>::gpu_data()

    @     0x2aeb6a7fb832  caffe::MVNLayer<>::Forward_gpu()

    @           0x4560c8  caffe::Layer<>::Forward()

    @           0x548649  caffe::MVNLayerTest_TestForwardAcrossChannels_Test<>::TestBody()

    @           0x75bc03  testing::internal::HandleExceptionsInMethodIfSupported<>()

    @           0x752847  testing::Test::Run()

    @           0x7528ee  testing::TestInfo::Run()

    @           0x7529f5  testing::TestCase::Run()

    @           0x755d38  testing::internal::UnitTestImpl::RunAllTests()

    @           0x755fc7  testing::UnitTest::Run()

    @           0x44a16a  main

    @     0x2aeb6b3f5ec5  (unknown)

    @           0x44fc59  (unknown)

    @              (nil)  (unknown)

make: *** [runtest] Aborted (core dumped)

However, CUDA 7 is installed:

$ nvcc -V

nvcc: NVIDIA (R) Cuda compiler driver

Copyright (c) 2005-2015 NVIDIA Corporation

Built on Mon_Feb_16_22:59:02_CST_2015

Cuda compilation tools, release 7.0, V7.0.27

And the Makefile.config contains: CUDA_DIR := /usr/local/cuda-7.0

[Andreas ten Pas]

Actually, I already solved it by reinstalling the drivers and CUDA.

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[sharath s]

I had the same Problem yesterday.

Just restarting my workstation solved the problem.

[Ravikant Gupta]

A simple restart solved the problem for me too (Ubuntu 16.04)