I have a surface book which I have been using for cuda development on the go. It had been working fine for several years, but in the last few months breakpoints in nsight for visual studio have stopped working.
Device query shows everything looks normal:
Detected 1 CUDA Capable device(s) Device 0: "GeForce GPU" CUDA Driver Version / Runtime Version 10.0 / 9.0 CUDA Capability Major/Minor version number: 5.0 Total amount of global memory: 1024 MBytes (1073741824 bytes) ( 3) Multiprocessors, (128) CUDA Cores/MP: 384 CUDA Cores GPU Max Clock rate: 993 MHz (0.99 GHz) Memory Clock rate: 2505 Mhz Memory Bus Width: 64-bit L2 Cache Size: 1048576 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 4 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 CUDA Device Driver Mode (TCC or WDDM): WDDM (Windows Display Driver Model) 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 = 10.0, CUDA Runtime Version = 9.0, NumDevs = 1, Device0 = GeForce GPU Result = PASS
I am using the integrated Intel graphic chipset as the driver of the display, so the nvidia gpu is dedicated for cuda. Nsight does not give any errors when I debug, it just does not hit the breakpoints. I am running cuda 10.0 and latest nsight (6.0). My nvidia GeForce GPU display driver is version 22.214.171.1245 (11/12/2018).
Should I try to install older version of the nvidia drivers to see if this is the problem or old versions of nsight? Any pointers would be appreciated.