I’ve installed CUDA on a new Ubuntu 14.04 machine with a GTX 980 Ti. I was setting up Tensorflow and I noticed they examples were failing, so I tried running a few related things from the CUDA samples. When I run the simpleStreams sample, it fails.
FWIW, I’m using linux kernel 4.2.0-30-generic.
Any ideas on what might be the problem? The output of simpleStreams and deviceQuery are below.
[ simpleStreams ] Device synchronization method set to = 0 (Automatic Blocking) Setting reps to 100 to demonstrate steady state > GPU Device 0: "GeForce GTX 980 Ti" with compute capability 5.2 Device: <GeForce GTX 980 Ti> canMapHostMemory: Yes > CUDA Capable: SM 5.2 hardware > 22 Multiprocessor(s) x 128 (Cores/Multiprocessor) = 2816 (Cores) > scale_factor = 1.0000 > array_size = 16777216 > Using CPU/GPU Device Synchronization method (cudaDeviceScheduleAuto) > mmap() allocating 64.00 Mbytes (generic page-aligned system memory) > cudaHostRegister() registering 64.00 Mbytes of generic allocated system memory Starting Test memcopy: 5.33 kernel: 2.77 non-streamed: 7.82 CUDA error at simpleStreams.cu:409 code=4(cudaErrorLaunchFailure) "cudaEventSynchronize(stop_event)"
deviceQuery passes with the following:
./deviceQuery Starting... CUDA Device Query (Runtime API) version (CUDART static linking) Detected 1 CUDA Capable device(s) Device 0: "GeForce GTX 980 Ti" CUDA Driver Version / Runtime Version 7.5 / 7.5 CUDA Capability Major/Minor version number: 5.2 Total amount of global memory: 6141 MBytes (6438977536 bytes) (22) Multiprocessors, (128) CUDA Cores/MP: 2816 CUDA Cores GPU Max Clock rate: 1291 MHz (1.29 GHz) Memory Clock rate: 3505 Mhz Memory Bus Width: 384-bit L2 Cache Size: 3145728 bytes Maximum Texture Dimension Size (x,y,z) 1D=(65536), 2D=(65536, 65536), 3D=(4096, 4096, 4096) Maximum Layered 1D Texture Size, (num) layers 1D=(16384), 2048 layers Maximum Layered 2D Texture Size, (num) layers 2D=(16384, 16384), 2048 layers Total amount of constant memory: 65536 bytes Total amount of shared memory per block: 49152 bytes Total number of registers available per block: 65536 Warp size: 32 Maximum number of threads per multiprocessor: 2048 Maximum number of threads per block: 1024 Max dimension size of a thread block (x,y,z): (1024, 1024, 64) Max dimension size of a grid size (x,y,z): (2147483647, 65535, 65535) Maximum memory pitch: 2147483647 bytes Texture alignment: 512 bytes Concurrent copy and kernel execution: Yes with 2 copy engine(s) Run time limit on kernels: No Integrated GPU sharing Host Memory: No Support host page-locked memory mapping: Yes Alignment requirement for Surfaces: Yes Device has ECC support: Disabled Device supports Unified Addressing (UVA): Yes Device PCI Domain ID / Bus ID / location ID: 0 / 1 / 0 Compute Mode: < Default (multiple host threads can use ::cudaSetDevice() with device simultaneously) > deviceQuery, CUDA Driver = CUDART, CUDA Driver Version = 7.5, CUDA Runtime Version = 7.5, NumDevs = 1, Device0 = GeForce GTX 980 Ti Result = PASS