cjolivier01 commented on a change in pull request #8972: Profiling
enhancements, python API, vtune and chrome tracing objects, etc.
URL: https://github.com/apache/incubator-mxnet/pull/8972#discussion_r169480086
##########
File path: python/mxnet/profiler.py
##########
@@ -52,7 +58,298 @@ def profiler_set_state(state='stop'):
state2int = {'stop': 0, 'run': 1}
check_call(_LIB.MXSetProfilerState(ctypes.c_int(state2int[state])))
-def dump_profile():
+def dump(finished=True):
"""Dump profile and stop profiler. Use this to save profile
- in advance in case your program cannot exit normally."""
- check_call(_LIB.MXDumpProfile())
+ in advance in case your program cannot exit normally.
+
+ Parameters
+ ----------
+ finished : boolean
+ Indicates whether to stop statistical output (dumping) after this dump.
+ Default is True
+ """
+ fin = 1 if finished is True else False
+ check_call(_LIB.MXDumpProfile(fin))
+
+def aggregate_stats_str(reset=False):
+ """Return a printable string of aggregate profile stats.
+ Parameters
+ ----------
+ reset: boolean
+ Indicates whether to clean aggeregate statistical data collected up to
this point
+ """
+ debug_str = ctypes.c_char_p()
+ do_reset = 1 if reset is True else 0
+ check_call(_LIB.MXAggregateProfileStatsPrint(ctypes.byref(debug_str),
int(do_reset)))
+ return py_str(debug_str.value)
+
+def pause():
+ check_call(_LIB.MXProfilePause(int(1)))
+
+def resume():
+ check_call(_LIB.MXProfilePause(int(0)))
+
+class Domain(object):
+ """Profiling domain, used to group sub-objects like tasks, counters, etc
into categories
+ Serves as part of 'categories' for chrome://tracing
+ Note: Domain handles are never destroyed.
+ """
+ def __init__(self, name):
+ """Profiling Domain class constructor
+ Parameters
+ ----------
+ name : string
+ Name of the domain
+ """
+ self.name = name
+ self.handle = ProfileHandle()
+ check_call(_LIB.MXProfileCreateDomain(c_str(self.name),
ctypes.byref(self.handle)))
+
+ def __str__(self):
+ return self.name
+
+ def new_task(self, name):
+ """Create new Task object owned by this domain
+ Parameters
+ ----------
+ name : string
+ Name of the task
+ """
+ return Task(self, name)
+
+ def new_frame(self, name):
+ """Create new Frame object owned by this domain
+ Parameters
+ ----------
+ name : string
+ Name of the frame
+ """
+ return Frame(self, name)
+
+ def new_counter(self, name, value=None):
+ """Create new Counter object owned by this domain
+ Parameters
+ ----------
+ name : string
+ Name of the counter
+ """
+ return Counter(self, name, value)
+
+ def new_marker(self, name):
+ """Create new Marker object owned by this domain
+ Parameters
+ ----------
+ name : string
+ Name of the marker
+ """
+ return Marker(self, name)
+
+class Task(object):
+ """Profiling Task class
+ A task is a logical unit of work performed by a particular thread.
+ Tasks can nest; thus, tasks typically correspond to functions, scopes, or
a case block
+ in a switch statement.
+ You can use the Task API to assign tasks to threads.
+ """
+ def __init__(self, domain, name):
+ """Profiling Task class constructor.
+ Parameters
+ ----------
+ domain : Domain object
+ Domain to which this object belongs
+ name : string
+ Name of the task
+ """
+ self.name = name
+ self.handle = ProfileHandle()
+ check_call(_LIB.MXProfileCreateTask(domain.handle,
+ c_str(self.name),
+ ctypes.byref(self.handle)))
+
+ def __del__(self):
+ if self.handle is not None:
+ check_call(_LIB.MXProfileDestroyHandle(self.handle))
+
+ def start(self):
+ """Start timing scope for this object"""
+ check_call(_LIB.MXProfileDurationStart(self.handle))
+
+ def stop(self):
+ """Stop timing scope for this object"""
+ check_call(_LIB.MXProfileDurationStop(self.handle))
+
+ def __str__(self):
+ return self.name
+
+
+class Frame(object):
+ """Profiling Frame class
+ Use the frame API to insert calls to the desired places in your code and
analyze
+ performance per frame, where frame is the time period between frame begin
and end points.
+ When frames are displayed in Intel VTune Amplifier, they are displayed in a
+ separate track, so they provide a way to visually separate this data from
normal task data.
+ This is different from Task in that each 'Frame' duration will be a
discretely-numbered
+ event in the VTune output, as well as its rate (frame-rate) shown. This
is analogous to
+ profiling each frame of some visual output, such as rendering a video game
frame.
+ """
+ def __init__(self, domain, name):
+ """Profiling Frame class constructor
+ Parameters
+ ----------
+ domain : Domain object
+ Domain to which this object belongs
+ name : string
+ Name of the frame
+ """
+ self.name = name
+ self.handle = ProfileHandle()
+ check_call(_LIB.MXProfileCreateFrame(domain.handle,
+ c_str(self.name),
+ ctypes.byref(self.handle)))
+
+ def __del__(self):
+ if self.handle is not None:
+ check_call(_LIB.MXProfileDestroyHandle(self.handle))
+
+ def start(self):
+ """Start timing scope for this object"""
+ check_call(_LIB.MXProfileDurationStart(self.handle))
+
+ def stop(self):
+ """Stop timing scope for this object"""
+ check_call(_LIB.MXProfileDurationStop(self.handle))
+
+ def __str__(self):
+ return self.name
+
+
+class Event(object):
+ """Profiling Event class
Review comment:
ok
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