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Second, open 127.0.0.1:55055 in your browser (allow security exception, if first time set initial password).
In 1st "Welcome" tab:
Under WHAT click: Configure Analysis
> Set application: /path-to-your-application/program.exe
> Check: Use app. dir. as work dir.
> In case of MPI parallelism, expand "Advanced": keep defaults but paste the following wrapper script and check "Trace MPI":
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Under WHAT (in 1st "Welcome" tab)
-> Click: Configure Analysis
--> Application: /path-to-your-application/program.exe
--> Check: Use app. dir. as work dir.
--> Expand "Advanced": keep defaults but paste "Wrapper script:"
#!/bin/bash
# Prefix script
echo "Target process PID: ${VTUNE_TARGET_PID}"
# Run VTune collector
mpirun -np 2 "$@"
--> Expand "Advanced"
---> keep defaults but paste "Wrapper script:"
---> Check: Trace MPI
Under HOW (in 1st "Welcome" tab)
-> Run "Performance Snapshot"
When complete (in 2nd tab r0...)
-> for overview expand: "HPC Perf. Characterization"
-> for results & to select next analysis expand: "Performance Snapshot"
--> Click: "Hotspots" |
Under HOW run: Performance Snapshot.
(When complete 2nd tab opens automatically.)
In 2nd "r0..." tab:
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Under HOW (in 3rd tab r0...) -> Run "Hotspots" When complete (after finalizing results) --> Expand sub-tab "Top-down Tree" ---> In "Function Stack" expand "_start" fct. and expand further down to "main" fct. (first with entry under "Source File") ---> Double click on: source_file_name.c --> In new sub-tab "source_file_name.c" scroll down to line with max. "CPU Time: Total" to find hotspot |
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