gko::CudaTimer Class Reference

A timer using events for timing on a CudaExecutor. More...

#include <ginkgo/core/base/timer.hpp>

Inheritance diagram for gko::CudaTimer:

Collaboration diagram for gko::CudaTimer:

Public Member Functions
void	record (time_point &time) override
	Records a time point at the current time.
void	wait (time_point &time) override
	Waits until all kernels in-process when recording the time point are finished.
std::chrono::nanoseconds	difference_async (const time_point &start, const time_point &stop) override
	Computes the difference between the two time points in nanoseconds. More...
	CudaTimer (std::shared_ptr< const CudaExecutor > exec)
Public Member Functions inherited from gko::Timer
time_point	create_time_point ()
	Returns a newly created time point. More...
std::chrono::nanoseconds	difference (time_point &start, time_point &stop)
	Computes the difference between the two time points in nanoseconds. More...

Additional Inherited Members
Static Public Member Functions inherited from gko::Timer
static std::unique_ptr< Timer >	create_for_executor (std::shared_ptr< const Executor > exec)
	Creates the timer type most suitable for recording accurate timings of kernels on the given executor. More...

Detailed Description

A timer using events for timing on a CudaExecutor.

Note

When using a CudaExecutor with a custom stream, make sure that the stream's lifetime is longer than the lifetime of this timer.

Member Function Documentation

difference_async()

std::chrono::nanoseconds gko::CudaTimer::difference_async ( const time_point &  start, const time_point &  stop  )

overridevirtual

Computes the difference between the two time points in nanoseconds.

This asynchronous version does not synchronize itself, so the time points need to have been synchronized with, i.e. timer->wait(stop) needs to have been called. The version is intended for more advanced users who want to measure the overhead of timing functionality separately.

Parameters

start	the first time point (earlier)
end	the second time point (later)

Returns

the difference between the time points in nanoseconds.

Implements gko::Timer.

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The documentation for this class was generated from the following file:

• ginkgo/core/base/timer.hpp