Difference between revisions of "Gprof Tutorial"
Jump to navigation
Jump to search
| Line 85: | Line 85: | ||
{ | { | ||
|type="()"} | |type="()"} | ||
| − | - | + | - An android app to show incoming callers |
| − | + | || | |
| − | + | + | + A hierarchy diagram of function calls in a given profile |
| − | + | || True | |
| − | - | + | - Instructions of how to call for help during emergencies |
| − | + | || | |
</quiz> | </quiz> | ||
{{hidden end}} | {{hidden end}} | ||
| Line 100: | Line 100: | ||
{ | { | ||
|type="()"} | |type="()"} | ||
| − | - | + | - gprof --call-graph |
| − | + | || | |
| − | - | + | - gprof |
| − | || | + | || |
| − | + | + | + gprof --graph |
| − | || | + | || True |
</quiz> | </quiz> | ||
{{hidden end}} | {{hidden end}} | ||
| Line 114: | Line 114: | ||
{ | { | ||
|type="()"} | |type="()"} | ||
| − | + | + | + Third party script for call graph visualization via the "dot" library |
| − | + | || True | |
| − | + | - Gprof feature to export profiles as a pdf | |
| − | || Gprof feature to export profiles as a pdf | + | || |
| − | + | - A fork of the beta version of gprof2 | |
| − | || A fork of the beta version of gprof2 | + | || |
</quiz> | </quiz> | ||
{{hidden end}} | {{hidden end}} | ||
| Line 128: | Line 128: | ||
{ | { | ||
|type="()"} | |type="()"} | ||
| − | - | + | - No, gprof only works with sequential applications |
| − | + | || | |
| − | + | - Yes, parallel profiling is the main use case of gprof | |
| − | || Yes, parallel profiling is the main use case of gprof | + | || |
| − | + | + Yes, but gprof cannot differentiate between individual threads/processes | |
| − | || Yes, but gprof cannot differentiate between individual threads/processes | + | || True |
</quiz> | </quiz> | ||
{{hidden end}} | {{hidden end}} | ||
| Line 142: | Line 142: | ||
{ | { | ||
|type="()"} | |type="()"} | ||
| − | - | + | - None |
| − | || | + | || |
| − | + | + | + Little |
| − | || | + | || True |
| − | - | + | - Much |
| − | || | + | || |
</quiz> | </quiz> | ||
{{hidden end}} | {{hidden end}} | ||
Revision as of 13:00, 2 November 2020
| HPC.NRW | |
|---|---|
 | |
| Associated Pages | |
| + | This is an #HPC.NRW course |
| HPC Courses | |
| 1. | Introduction to Linux in HPC |
| 2. | Gprof Tutorial |
| 3. | OpenMP in Small Bites
|
Gprof is a free and easy-to-use profiler.
Gprof Introduction + Pascal Example
Quiz
1. What lanuages can gprof profile?
2. How does gprof profiles an application?
3. What compiler flag is used to instrument the application?
How should the parameters be when running the instrumented application?
C++ + Fortran Examples
Show gprof in real world examples and introduce call graph.
Quiz
1. What is a call graph?
2. How do you generate a callgraph of a gprof profile?
{{hidden begin |title = 3. What is gprof2dot?
{{hidden begin |title = 4. Does gprof work with MPI applications?
{{hidden begin |title = 5. How much overhead does gprof produce?