To use the markers for Intel SDE within any Python script, create the libsde_markers.so shared library first. E.g.:
$ gcc sde_markers.c -fPIC -shared -Wl,-soname,libsde_markers.so -o libsde_markers.so
Use this library within your Python script with the ctypes.cdll class:
from ctypes import cdll
lib_sde_markers = cdll.LoadLibrary('./libsde_markers.so')
...
lib_sde_markers.sde_start_marker() # start collecting events from here on
... # 1st area of interest
lib_sde_markers.sde_stop_marker() # pause collection of events
... # non-interesting section
lib_sde_markers.sde_start_marker() # resume event collection
... # 2nd area of interest
lib_sde_markers.sde_stop_marker() # stop collection (final pause)
...
Intel SDE can then be used like so:
$ sde64 -iform -mix -dyn_mask_profile -start_ssc_mark FACE:repeat -stop_ssc_mark DEAD:repeat -- python python_script.py
The sde_start_marker() and sde_stop_marker() starts/resumes and stops/pauses the collection of events, respectively.
Example:
$ gcc sde_markers.c -fPIC -shared -Wl,-soname,libsde_markers.so -o libsde_markers.so
$ sde64 -iform -mix -dyn_mask_profile -start_ssc_mark FACE:repeat -stop_ssc_mark DEAD:repeat -- python python_script.py
$ python ../intel_sde_flops.py
TID: 0 (OS-TID: 7475):
Unmasked single prec. FLOPs: 1
Masked single prec. FLOPs: 0
Unmasked double prec. FLOPs: 1
Masked double prec. FLOPs: 0
Instructions executed: 15856
FMA instructions executed: 0
=============================================
Sum:
Single prec. FLOPs: 1
Double prec. FLOPs: 1
Total instructions executed: 15856
Total FMA instructions executed: 0