Diferență între revizuiri ale paginii „PC Lab 5”
Cbira (discuție | contribuții) |
Cbira (discuție | contribuții) |
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valgrind --tool=callgrind ./cpuload (run the program with callgrind; generates a file callgrind.out.12345 that can be viewed with kcachegrind) | valgrind --tool=callgrind ./cpuload (run the program with callgrind; generates a file callgrind.out.12345 that can be viewed with kcachegrind) | ||
| − | kcachegrind | + | kcachegrind whateverprofile.callgrind // open profile.callgrind with kcachegrind |
'''Note''': Valgrind is also great for checking memory leaks: | '''Note''': Valgrind is also great for checking memory leaks: | ||
Versiunea de la data 12 aprilie 2018 16:06
Session 5
Task: run an open-source profiler (valgrind & gprof or visual studio) and improve performance of keypoint extraction in ASIFT C++ code
1. Download ASIFT project from here: http://www.ipol.im/pub/art/2011/my-asift/
2. Run demo_ASIFT with the two included Adams as input images from the Sixtine Chapel. Horizontal result should look like this: 
3. Modify code to only do "compute_asift_keypoints" (matching is not interesting, since it was covered in the previous session)
4. Run the valgrind profiler
eg, for cpuload program:
g++ -std=c++11 cpuload.cpp -o cpuload (compile program cpuload)
valgrind --tool=callgrind ./cpuload (run the program with callgrind; generates a file callgrind.out.12345 that can be viewed with kcachegrind)
kcachegrind whateverprofile.callgrind // open profile.callgrind with kcachegrind
Note: Valgrind is also great for checking memory leaks:
valgrind --leak-check=full <path>
valgrind --tool=memcheck <path>
Points (out of 10) vs. expected performance ():
TBD
