nv-nsight-cu-cli outputs many n/a data

the command is nv-nsight-cu-cli -f sumMatrix
output is :

sumMatrixOnGPU2D <<<(512,512), (32,32)>>> elapsed 1.790660 s
==PROF== Profiling -    1: 0%....50%....100%
==PROF== Report: profile.nsight-cuprof-report
sumMatrixOnGPU2D, 2019-Aug-14 17:31:28
Section: GPU Speed Of Light
---------------------------------------------------------------------- --------------- ------------------------------
Memory Frequency                                                                                                  n/a
SOL FB                                                                                                            n/a
Elapsed Cycles                                                                                                    n/a
SM Frequency                                                                                                      n/a
Memory [%]                                                                                                        n/a
Duration                                                                                                          n/a
SOL L2                                                                                                            n/a
SOL TEX                                                                                                           n/a
SM [%]                                                                                                            n/a
---------------------------------------------------------------------- --------------- ------------------------------

Section: Compute Workload Analysis
---------------------------------------------------------------------- --------------- ------------------------------
Executed Ipc Active                                                                                               n/a
Executed Ipc Elapsed                                                                                              n/a
Issued Ipc Active                                                                                                 n/a
Issue Slots Busy                                                                                                  n/a
SM Busy                                                                                                           n/a
---------------------------------------------------------------------- --------------- ------------------------------

Section: Memory Workload Analysis
---------------------------------------------------------------------- --------------- ------------------------------
Memory Throughput                                                                                                 n/a
Mem Busy                                                                                                          n/a
Max Bandwidth                                                                                                     n/a
L2 Hit Rate                                                                                                       n/a
Mem Pipes Busy                                                                                                    n/a
L1 Hit Rate                                                                                                       n/a
---------------------------------------------------------------------- --------------- ------------------------------

Section: Scheduler Statistics
---------------------------------------------------------------------- --------------- ------------------------------
Active Warps Per Scheduler                                                                                        n/a
Eligible Warps Per Scheduler                                                                                      n/a
No Eligible                                                                                                       n/a
Instructions Per Active Issue Slot                                                                                n/a
Issued Warp Per Scheduler                                                                                         n/a
One or More Eligible                                                                                              n/a
---------------------------------------------------------------------- --------------- ------------------------------

Section: Warp State Statistics
---------------------------------------------------------------------- --------------- ------------------------------
Avg. Not Predicated Off Threads Per Warp                                                                          n/a
Avg. Active Threads Per Warp                                                                                      n/a
Warp Cycles Per Executed Instruction                                                                              n/a
Warp Cycles Per Issued Instruction                                                                                n/a
Warp Cycles Per Issue Active                                                                                      n/a
---------------------------------------------------------------------- --------------- ------------------------------

Section: Instruction Statistics
---------------------------------------------------------------------- --------------- ------------------------------
Avg. Executed Instructions Per Scheduler                                                                          n/a
Executed Instructions                                                                                             n/a
Avg. Issued Instructions Per Scheduler                                                                            n/a
Issued Instructions                                                                                               n/a
---------------------------------------------------------------------- --------------- ------------------------------

Section: Launch Statistics
---------------------------------------------------------------------- --------------- ------------------------------
Block Size                                                                                                      1,024
Grid Size                                                                                                     262,144
Registers Per Thread                                                   register/thread                             16
Shared Memory Configuration Size                                                 Kbyte                             48
Dynamic Shared Memory Per Block                                             byte/block                              0
Static Shared Memory Per Block                                              byte/block                              0
Threads                                                                         thread                    268,435,456
Waves Per SM                                                                                                 8,738.13
---------------------------------------------------------------------- --------------- ------------------------------

Section: Occupancy
---------------------------------------------------------------------- --------------- ------------------------------
Block Limit SM                                                                   block                             16
Block Limit Registers                                                         register                              4
Block Limit Local Mem                                                             byte                            nan
Block Limit Warps                                                                 warp                              1
Achieved Active Warps Per SM                                                                                      n/a
Achieved Occupancy                                                                                                n/a
Theoretical Active Warps per SM                                             warp/cycle                             32
Theoretical Occupancy                                                                %                            100
---------------------------------------------------------------------- --------------- ------------------------------

why there is so many n/a in output?
thanks in advance.

solved.
should add sudo. but i don’t know why

We would need to know more details to help you effectively, including OS, GPU, Nsight Compute version and Nvidia driver version. One possibility could be that you are seeing the restrictions described here: https://developer.nvidia.com/nvidia-development-tools-solutions-ERR_NVGPUCTRPERM-permission-issue-performance-counters