ubuntu@tegra-ubuntu:~/blender-git/build/bin$ ./blender
Read new prefs: /home/ubuntu/.config/blender/2.78/config/userpref.blend
found bundled python: /home/ubuntu/blender-git/build/bin/2.78/python
CUDA error: Invalid value in cuMemcpyHtoD(cuda_device_ptr(mem.device_pointer), (void*)mem.data_pointer, mem.memory_size())

Refer to the Cycles GPU rendering documentation for possible solutions:
http://www.blender.org/manual/render/cycles/gpu_rendering.html

CUDA error: Invalid value in cuMemcpyHtoD(cumem, (void*)&ptr, cubytes)
CUDA error: Invalid value in cuMemcpyHtoD(cuda_device_ptr(mem.device_pointer), (void*)mem.data_pointer, mem.memory_size())
CUDA error: Invalid value in cuMemcpyHtoD(cumem, (void*)&ptr, cubytes)
CUDA error: Invalid value in cuMemFree(cuda_device_ptr(mem.device_pointer))
CUDA error: Invalid value in cuMemFree(cuda_device_ptr(mem.device_pointer))
Error: CUDA error: Invalid value in cuMemcpyHtoD(cuda_device_ptr(mem.device_pointer), (void*)mem.data_pointer, mem.memory_size())