Functions
tarch::logging::Log	_log ("::")

void	initInputData (double *Q)
	Set input data. More...

void	allocateAndStoreOutcome (const double const Q, const double *const maxEigenvalue, const int numberOfCells)
	Allocates and stores outcome of one compute kernel. More...

void	freeOutcome (const int numberOfCells)

void	validateOutcome (const double const Q, const double *const maxEigenvalue, const int numberOfCells)
	Validate data against pre-stored simulation outcome. More...

void	reportRuntime (const std::string &kernelIdentificator, const tarch::timing::Measurement &timingKernelLaunch, int numberOfCells)
	Reports the runtime and throughput of the benchmarks. More...

double	runKernels (int device, exahype2::CellData< double, double > &cellData, int cellIndex, tarch::timing::Measurement &measurement)

void	runBenchmarks (int numberOfCells)
	Run the benchmark for one particular number of cells. More...

int	main (int argc, char **argv)

Variables
constexpr double	TimeStamp = 0.0

constexpr double	TimeStepSize = 1e-6

const tarch::la::Vector< DIMENSIONS, double >	CellCenter = benchmarks::exahype2::kernelbenchmarks::DomainOffset + 0.5*benchmarks::exahype2::kernelbenchmarks::DomainSize

const tarch::la::Vector< DIMENSIONS, double >	CellSize = benchmarks::exahype2::kernelbenchmarks::DomainSize / 81.0

constexpr int	NumberOfInputEntriesPerCell

constexpr int	NumberOfOutputEntriesPerCell = 0

constexpr int	NumberOfFiniteVolumesPerCell

double **	validQ = nullptr

double *	validMaxEigenvalue = nullptr

bool	outcomeIsInvalid = false

tarch::timing::Measurement	timingComputeKernel

Function Documentation

◆ _log()

tarch::logging::Log _log ( "::" )

◆ allocateAndStoreOutcome()

void allocateAndStoreOutcome	(	const double const	Q,
		const double *const	maxEigenvalue,
		const int	numberOfCells
	)

Allocates and stores outcome of one compute kernel.

Make a persistent snapshot of a solution and assume, from hereon, that this snapshot is the valid data. You can call this routine as often as you want. Only the very first call will trigger a snapshot.

Note: needs to freed using the freeOutcome() routine.

Definition at line 128 of file KernelBenchmarks-main.cpp.

References applications::exahype2::ccz4::maxEigenvalue(), benchmarks::exahype2::kernelbenchmarks::NumberOfOutputEntriesPerCell, validMaxEigenvalue, and validQ.

Referenced by runBenchmarks().

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◆ freeOutcome()

void freeOutcome ( const int numberOfCells )

Definition at line 145 of file KernelBenchmarks-main.cpp.

References validMaxEigenvalue, and validQ.

Referenced by main().

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◆ initInputData()

void initInputData ( double * Q )

Set input data.

We use the values from the centralMost Cell in the domain with an arbitrary cell size of 1/81 of the domain size.

TODO: should we update this to actual initial conditions?

Definition at line 94 of file KernelBenchmarks-main.cpp.

References CellCenter, and CellSize.

◆ main()

int main	(	int	argc,
		char **	argv
	)

Definition at line 425 of file KernelBenchmarks-main.cpp.

References freeOutcome(), static-limiting-euler-airfoil::init, outcomeIsInvalid, and runBenchmarks().

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◆ reportRuntime()

void reportRuntime	(	const std::string &	kernelIdentificator,
		const tarch::timing::Measurement &	timingKernelLaunch,
		int	numberOfCells
	)

Reports the runtime and throughput of the benchmarks.

First set of outputs refers to the time of the compute kernel itself. Second set of outputs refers to the time including the kernel launch overhead. The throughput is measured in the updates of volumes per second (dof/s).

Definition at line 227 of file KernelBenchmarks-main.cpp.

References timingComputeKernel.

◆ runBenchmarks()

void runBenchmarks ( int numberOfCells )

Run the benchmark for one particular number of cells.

Parameters

numberOfCells Number of cells to study

Definition at line 348 of file KernelBenchmarks-main.cpp.

References allocateAndStoreOutcome(), CellCenter, CellSize, benchmarks::exahype2::kernelbenchmarks::initInputData(), benchmarks::exahype2::kernelbenchmarks::NumberOfInputEntriesPerCell, benchmarks::exahype2::kernelbenchmarks::NumberOfOutputEntriesPerCell, benchmarks::exahype2::kernelbenchmarks::reportRuntime(), runKernels(), TimeStamp, TimeStepSize, timingComputeKernel, and validateOutcome().

Referenced by main().

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◆ runKernels()

double runKernels	(	int	device,
		exahype2::CellData< double, double > &	cellData,
		int	cellIndex,
		tarch::timing::Measurement &	measurement
	)

Definition at line 247 of file KernelBenchmarks-main.cpp.

References CellCenter, CellSize, applications::exahype2::ccz4::maxEigenvalue(), TimeStamp, and TimeStepSize.

Referenced by runBenchmarks().

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◆ validateOutcome()

void validateOutcome	(	const double const	Q,
		const double *const	maxEigenvalue,
		const int	numberOfCells
	)

Validate data against pre-stored simulation outcome.

Works if and only if storeOutcome has been performed before. Does not abort in case there are errors. If there are errors, we return a status code != 0.

Definition at line 164 of file KernelBenchmarks-main.cpp.

References applications::exahype2::ccz4::maxEigenvalue(), benchmarks::exahype2::kernelbenchmarks::NumberOfOutputEntriesPerCell, outcomeIsInvalid, validMaxEigenvalue, and validQ.

Referenced by runBenchmarks().

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Variable Documentation

◆ CellCenter

const tarch::la::Vector<DIMENSIONS,double> CellCenter = benchmarks::exahype2::kernelbenchmarks::DomainOffset + 0.5*benchmarks::exahype2::kernelbenchmarks::DomainSize

Definition at line 48 of file KernelBenchmarks-main.cpp.

Referenced by initInputData(), benchmarks::exahype2::kernelbenchmarks::initInputData(), runBenchmarks(), and runKernels().

◆ CellSize

const tarch::la::Vector<DIMENSIONS,double> CellSize = benchmarks::exahype2::kernelbenchmarks::DomainSize / 81.0

Definition at line 49 of file KernelBenchmarks-main.cpp.

Referenced by applyBoundaryConditionsToAxis(), createMarkerFromIndex(), initInputData(), benchmarks::exahype2::kernelbenchmarks::initInputData(), runBenchmarks(), and runKernels().

◆ NumberOfFiniteVolumesPerCell

constexpr int NumberOfFiniteVolumesPerCell

constexpr

Initial value:

= AderSolver::Order
  * AderSolver::Order
#if DIMENSIONS == 3
  * AderSolver::Order
#endif

Definition at line 71 of file KernelBenchmarks-main.cpp.

◆ NumberOfInputEntriesPerCell

constexpr int NumberOfInputEntriesPerCell

constexpr

Initial value:

= (AderSolver::Order + 1)
  * (AderSolver::Order + 1)
#if DIMENSIONS == 3
  * (AderSolver::Order + 1)
#endif
  * (AderSolver::NumberOfUnknowns + AderSolver::NumberOfAuxiliaryVariables)

Definition at line 54 of file KernelBenchmarks-main.cpp.

◆ NumberOfOutputEntriesPerCell

constexpr int NumberOfOutputEntriesPerCell = 0

constexpr

Definition at line 62 of file KernelBenchmarks-main.cpp.

◆ outcomeIsInvalid

bool outcomeIsInvalid = false

Definition at line 82 of file KernelBenchmarks-main.cpp.

Referenced by main(), and validateOutcome().

◆ TimeStamp

constexpr double TimeStamp = 0.0

constexpr

Definition at line 46 of file KernelBenchmarks-main.cpp.

Referenced by runBenchmarks(), and runKernels().

◆ TimeStepSize

constexpr double TimeStepSize = 1e-6

constexpr

Definition at line 47 of file KernelBenchmarks-main.cpp.

Referenced by runBenchmarks(), and runKernels().

◆ timingComputeKernel

tarch::timing::Measurement timingComputeKernel

Definition at line 84 of file KernelBenchmarks-main.cpp.

Referenced by benchmarks::exahype2::kernelbenchmarks::reportRuntime(), reportRuntime(), runBenchmarks(), variant1::runBenchmarks(), variant2::runBenchmarks(), variant3::runBenchmarks(), variant4::runBenchmarks(), variant5::runBenchmarks(), and variant6::runBenchmarks().

◆ validMaxEigenvalue

double* validMaxEigenvalue = nullptr

Definition at line 81 of file KernelBenchmarks-main.cpp.

Referenced by allocateAndStoreOutcome(), freeOutcome(), and validateOutcome().

◆ validQ

double** validQ = nullptr

Definition at line 80 of file KernelBenchmarks-main.cpp.

Referenced by allocateAndStoreOutcome(), freeOutcome(), and validateOutcome().

Functions

Variables

Function Documentation

◆ _log()

◆ allocateAndStoreOutcome()

◆ freeOutcome()

◆ initInputData()

◆ main()

◆ reportRuntime()

◆ runBenchmarks()

◆ runKernels()

◆ validateOutcome()

Variable Documentation

◆ CellCenter

◆ CellSize

◆ NumberOfFiniteVolumesPerCell

◆ NumberOfInputEntriesPerCell

◆ NumberOfOutputEntriesPerCell

◆ outcomeIsInvalid

◆ TimeStamp

◆ TimeStepSize

◆ timingComputeKernel

◆ validMaxEigenvalue

◆ validQ