nvprof

No GPU activities in profiling with nvprof

Deadly 提交于 2021-01-29 09:57:04
问题 I run nvprof.exe on the function that initialize data, calls three kernels and free's data. All profiled as it should and I got result like this: ==7956== Profiling application: .\a.exe ==7956== Profiling result: GPU activities: 52.34% 25.375us 1 25.375us 25.375us 25.375us th_single_row_add(float*, float*, float*) 43.57% 21.120us 1 21.120us 21.120us 21.120us th_single_col_add(float*, float*, float*) 4.09% 1.9840us 1 1.9840us 1.9840us 1.9840us th_single_elem_add(float*, float*, float*) API

Numba and guvectorize for CUDA target: Code running slower than expected

放肆的年华 提交于 2019-12-22 18:38:26
问题 Notable details Large datasets (10 million x 5), (200 x 10 million x 5) Numpy mostly Takes longer after every run Using Spyder3 Windows 10 First thing is attempting to use guvectorize with the following function. I am passing in a bunch of numpy arrays and attempting to use them to multiply across two of the arrays. This works if run with a target other than cuda. However, when switched to cuda it results in an unknown error being: File "C:\ProgramData\Anaconda3\lib\site-packages\numba\cuda

Profiling arbitrary CUDA applications

試著忘記壹切 提交于 2019-12-22 12:47:07
问题 I know of the existence of nvvp and nvprof , of course, but for various reasons nvprof does not want to work with my app that involves lots of shared libraries. nvidia-smi can hook into the driver to find out what's running, but I cannot find a nice way to get nvprof to attach to a running process. There is a flag --profile-all-processes which does actually give me a message "NVPROF is profiling process 12345", but nothing further prints out. I am using CUDA 8. How can I get a detailed

How to observe CUDA events and metrics for a subsection of an executable (e.g. only during a kernel execution time)?

假如想象 提交于 2019-12-19 09:03:22
问题 I'm familiar with using nvprof to access the events and metrics of a benchmark, e.g., nvprof --system-profiling on --print-gpu-trace -o (file name) --events inst_issued1 ./benchmarkname The system-profiling on --print-gpu-trace -o (filename) command gives timestamps for start time, kernel end times, power, temp and saves the info an nvvp files so we can view it in the visual profiler. This allows us to see what's happening in any section of a code, in particular when a specific kernel is