I am using nvprof on my 64-bit ubuntu machine with Geforce GT 730 GPU. I get the following error when I use nvprof: ==7508== NVPROF is profiling process 7508, command: /homes/pgharat/cuda-workspace/Matrix Mul/Debug/Matrix Mul ==7508== The visual profiler fails to work giving the same error. As far as I know, you do not need sudo privilege to run nvprof. Could someone please tell me why is this happening? How can I resolve this?

Hi, There was a correction made to the web site. The command you should be using to allow profiling tools access to the GPU performance counters should be modprobe nvidia NVreg_RestrictProfilingToAdminUsers=0 This should resolve your issue. For persistence across reboots, we’d recommend adding this to a /etc/modprobe.d config file as mentioned on https://developer.nvidia.com/ERR_NVGPUCTRPERM Sorry for the misinformation.

Hi pritam01gharat, Due to security reasons, recent NVIDIA driver installation has disabled access to GPU Performance. For instructions on enabling permissions please refer: [url]https://developer.nvidia.com/nvidia-development-tools-solutions-err-nvgpuctrperm-nvprof[/url] – Thanks, Ramesh

I tried the solutions provided in this link NVIDIA Development Tools Solutions - ERR_NVGPUCTRPERM: nvprof Permission... Overview This page provides an explanation and solutions for the following error message from the NVIDIA nvprof command line profiler: The user does not have permission to profile on the target device. For general information about this error... None of them worked. My machine has a: GTX 960m, Ubuntu 18.04, Nvidia driver 418.56, CUDA 10.1 I am currently downgrading everything, hopefully that will work. Thanks Nvidia for keeping your tools (especially drivers) a terrible and time wasting experience to install, use or even remove on any Linux distribution. Keep up!

Not sure has this problem solved. But i’ve ran into the same issue and thing described on the website mentioned above does not work.

Hi y.juntao, Sorry for inconvenience. Can you please try below steps, assuming you are on Linux? Create .conf file (e.g. profile.conf) in folder /etc/modprobe.d Open file /etc/modprobe.d/profile.conf in any editor Add below line in profile.conf options nvidia “NVreg_RestrictProfilingToAdminUsers=0” Close file /etc/modprobe.d/profile.conf Restart your machine Also note that [1] On some systems, it may be necessary to rebuild the initrd after writing a configuration file to /etc/modprobe.d [2] On Ubuntu systems, when installing via the distro-native packages, the kernel module gets renamed from nvidia to nvidia-xxx, and then nvidia is aliased to nvidia-xxx (where xxx is the major number of the driver. So a 418.67 driver would use nvidia-418)

None of the above that you suggest works. I have not been able to use “nvprof”. I have a version of linux Ubuntu 16.04.6 LTS with the driver nvidia-418. Has anyone solved the problem?

Please check if the kernel module “nvidia” exists: $ modinfo nvidia If you get a module not found error, try $ modinfo nvida-418 (assuming 418 is the major number of the driver you are using) In this case you will need to use the following for step 3: options nvidia-418 “NVreg_RestrictProfilingToAdminUsers=0” Also confirm that: You are doing steps 1 to 5 as root Reboot the machine as suggested in step 5 Check that the value is correctly set to 0 $ cat /proc/driver/nvidia/params | grep RmProfilingAdminOnly You should see: RmProfilingAdminOnly: 0 Hope this works.

What was the reason for changing this? Seems unnecessary.

This change was made due to “Security Notice: NVIDIA Response to “Rendered Insecure: GPU Side Channel Attacks are Practical” - November 2018”. Refer https://developer.nvidia.com/nvidia-development-tools-solutions-ERR_NVGPUCTRPERM-permission-issue-performance-counters and Security Notice: NVIDIA Response to “Rendered Insecure: GPU Side Channel Attacks are Practical” - November 2018 | NVIDIA

Hello, I’m using nvprof on Linux. Since I updated driver to 430.50, ‘sudo’ is needed for nvprof. According to https://developer.nvidia.com/nvidia-development-tools-solutions-ERR_NVGPUCTRPERM-permission-issue-performance-counters, besides adding parameter to kernel module, run by user with the CAP_SYS_ADMIN capability set should also be a solution. Using libcap, I can set ‘CAP_SYS_ADMIN’ capability upon login $ capsh --print Current: = cap_sys_admin+i I also setcap to nvprof $ getcap /usr/local/cuda/bin/nvprof /usr/local/cuda/bin/nvprof = cap_sys_admin+eip But nvprof still cannot get proper permission, is there any suggestion? Thanks

nvprof: Warning: The user does not have permission to profile on the target device.

Developer Tools Other Tools Visual Profiler and nvprof

gherling August 8, 2019, 6:34pm 9

Hi, thanks for your suggestions. However, I found a temporary solution:

sudo /usr/local/cuda/bin/nvprof ./jacobi_test

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nvprof: Warning: The user does not have permission to profile on the target device.

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