Here's the main window of vprof, showing the percentages of events
measured on a line-by-line basis (you can also select individual
tabs for Files or Functions).
This particular experiment was
run five times, each time setting the environment variable VMON
to one of the values PAPI_FLOPS, PAPI_L1_TCM, PAPI_L2_TCM,
PROF, and PAPI_TOT_CYC. After the program was run five times,
vprof was started and each profile file was loaded in.
By selecting the measurement of interest in the main window (above, one of the percentages listed under the column headers PAPI_FLOPS, etc), a file browser shows you the source code centered on the particular line selected. Each of the measurements are displayed to the left of the corresponding line.
Additional screenshots can be found on the VProf home page at Sandia.