peclet::core::detail Namespace Reference

Functions
int	affinityCpus ()
	CPUs in this process's affinity mask, or 0 if that cannot be determined.
std::string	readFirstLine (const std::string &path)
	First whitespace-separated fields of a file, or an empty string if it cannot be read.
std::string	cgroupPath (const std::string &procSelfCgroup, const std::string &controller)
	The cgroup path of this process for controller ("" = the v2 unified hierarchy), e.g.
int	quotaFromCpuMax (const std::string &file)
	CPUs allowed by one cgroup-v2 cpu.max file ("max 100000" or "200000 100000"), rounded UP so a fractional budget still gets one thread.
int	quotaFromCfs (const std::string &dir)
	The same for cgroup v1's pair of files in dir. 0 = no limit here.
int	cgroupQuota (const std::string &cgroupRoot, const std::string &procSelfCgroup)
	The tightest CPU quota binding this process, walking from its own cgroup up to the root.
template<class Real >
PECLET_HD Real	hdSqrt (Real v)
template<class Real >
PECLET_HD Real	hdAbs (Real v)
template<class Real >
PECLET_HD Real	hdMax (Real a, Real b)
template<class Real >
PECLET_HD Real	hdMin (Real a, Real b)
template<class Real >
PECLET_HD Real	hdPow (Real a, Real b)
template<class Real >
PECLET_HD Real	hdNearbyint (Real v)
template<class Real >
PECLET_HD Real	hdFloor (Real v)
template<class Real >
PECLET_HD Real	hdFma (Real a, Real b, Real c)
template<class Real >
PECLET_HD Real	cmpMax (Real a, Real b)
	Comparison-based max, <-ordered (ties keep the earlier operand) — std::max semantics, NOT fmax's NaN-swallowing ones.

Function Documentation

affinityCpus()

int peclet::core::detail::affinityCpus ( )

inline

CPUs in this process's affinity mask, or 0 if that cannot be determined.

Definition at line 40 of file cpu_budget.hpp.

Referenced by peclet::core::defaultHostThreads(), and peclet::core::usableCpus().

readFirstLine()

std::string peclet::core::detail::readFirstLine ( const std::string &  path )

inline

First whitespace-separated fields of a file, or an empty string if it cannot be read.

Definition at line 51 of file cpu_budget.hpp.

Referenced by quotaFromCfs(), and quotaFromCpuMax().

cgroupPath()

std::string peclet::core::detail::cgroupPath ( const std::string &  procSelfCgroup, const std::string &  controller  )

inline

The cgroup path of this process for controller ("" = the v2 unified hierarchy), e.g.

"/user.slice/user-1000.slice/session-3.scope". Empty if absent.

Definition at line 61 of file cpu_budget.hpp.

Referenced by cgroupQuota().

quotaFromCpuMax()

int peclet::core::detail::quotaFromCpuMax ( const std::string &  file )

inline

CPUs allowed by one cgroup-v2 cpu.max file ("max 100000" or "200000 100000"), rounded UP so a fractional budget still gets one thread.

0 = no limit here (or no such file).

Definition at line 86 of file cpu_budget.hpp.

References readFirstLine().

Referenced by cgroupQuota().

quotaFromCfs()

int peclet::core::detail::quotaFromCfs ( const std::string &  dir )

inline

The same for cgroup v1's pair of files in dir. 0 = no limit here.

Definition at line 97 of file cpu_budget.hpp.

References readFirstLine().

Referenced by cgroupQuota().

cgroupQuota()

int peclet::core::detail::cgroupQuota ( const std::string &  cgroupRoot, const std::string &  procSelfCgroup  )

inline

The tightest CPU quota binding this process, walking from its own cgroup up to the root.

0 = no quota anywhere. Split out from usableCpus() so a test can point it at a fixture tree.

Definition at line 107 of file cpu_budget.hpp.

References cgroupPath(), quotaFromCfs(), and quotaFromCpuMax().

Referenced by peclet::core::usableCpus().

hdSqrt()

template<class Real >

PECLET_HD Real peclet::core::detail::hdSqrt

(

Real

v

)

Definition at line 143 of file portable.hpp.

Referenced by peclet::core::geom::prim::Sphere< Real >::eval(), peclet::core::geom::prim::Box< Real >::eval(), peclet::core::geom::prim::HollowCylinder< Real >::eval(), peclet::core::geom::prim::HollowCylinderShell< Real >::eval(), peclet::core::geom::prim::Capsule< Real >::eval(), peclet::core::geom::prim::Torus< Real >::eval(), peclet::core::geom::prim::Cone< Real >::eval(), peclet::core::geom::prim::Ellipsoid< Real >::eval(), peclet::core::geom::prim::Superquadric< Real >::eval(), peclet::core::geom::evalSphereUnion(), peclet::core::geom::evalSphereUnionSubset(), peclet::core::geom::prim::Sphere< Real >::grad(), peclet::core::geom::prim::Box< Real >::grad(), peclet::core::geom::prim::HollowCylinder< Real >::grad(), peclet::core::geom::prim::HollowCylinderShell< Real >::grad(), peclet::core::geom::prim::Capsule< Real >::grad(), peclet::core::geom::prim::Torus< Real >::grad(), peclet::core::geom::sampleGrid(), peclet::core::geom::sphereUnionEvalOwner(), peclet::core::geom::sphereUnionEvalOwnerGrid(), and peclet::core::geom::sphereUnionOwnerSubset().

hdAbs()

template<class Real >

PECLET_HD Real peclet::core::detail::hdAbs

(

Real

v

)

Definition at line 147 of file portable.hpp.

Referenced by peclet::core::geom::prim::Box< Real >::eval(), peclet::core::geom::prim::HollowCylinder< Real >::eval(), peclet::core::geom::prim::Cone< Real >::eval(), peclet::core::geom::prim::Superquadric< Real >::eval(), peclet::core::geom::prim::HollowCylinderShell< Real >::evalRZ(), peclet::core::geom::prim::Box< Real >::grad(), peclet::core::geom::prim::HollowCylinder< Real >::grad(), and peclet::core::geom::prim::HollowCylinderShell< Real >::grad().

hdMax()

template<class Real >

PECLET_HD Real peclet::core::detail::hdMax	(	Real	a,
		Real	b
	)

Definition at line 151 of file portable.hpp.

Referenced by peclet::core::geom::prim::Box< Real >::eval(), peclet::core::geom::prim::HollowCylinder< Real >::eval(), peclet::core::geom::prim::Capsule< Real >::eval(), peclet::core::geom::prim::Cone< Real >::eval(), peclet::core::geom::prim::Superquadric< Real >::eval(), peclet::core::geom::evalTree(), peclet::core::geom::evalTreeGrad(), peclet::core::geom::prim::Box< Real >::grad(), peclet::core::geom::prim::HollowCylinder< Real >::grad(), peclet::core::geom::prim::Capsule< Real >::grad(), and peclet::core::geom::sampleGrid().

hdMin()

template<class Real >

PECLET_HD Real peclet::core::detail::hdMin	(	Real	a,
		Real	b
	)

Definition at line 155 of file portable.hpp.

Referenced by peclet::core::geom::prim::Box< Real >::eval(), peclet::core::geom::prim::HollowCylinder< Real >::eval(), peclet::core::geom::prim::Capsule< Real >::eval(), peclet::core::geom::prim::Cone< Real >::eval(), peclet::core::geom::prim::Ellipsoid< Real >::eval(), peclet::core::geom::prim::Superquadric< Real >::eval(), peclet::core::geom::evalTree(), peclet::core::geom::evalTreeGrad(), peclet::core::geom::prim::Capsule< Real >::grad(), and peclet::core::geom::sampleGrid().

hdPow()

template<class Real >

PECLET_HD Real peclet::core::detail::hdPow	(	Real	a,
		Real	b
	)

Definition at line 159 of file portable.hpp.

Referenced by peclet::core::geom::prim::Superquadric< Real >::eval().

hdNearbyint()

template<class Real >

PECLET_HD Real peclet::core::detail::hdNearbyint

(

Real

v

)

Definition at line 163 of file portable.hpp.

hdFloor()

template<class Real >

PECLET_HD Real peclet::core::detail::hdFloor

(

Real

v

)

Definition at line 167 of file portable.hpp.

Referenced by peclet::core::geom::CandidateGridView< Real >::binOf(), and peclet::core::geom::buildSphereCandidateGrid().

hdFma()

template<class Real >

PECLET_HD Real peclet::core::detail::hdFma	(	Real	a,
		Real	b,
		Real	c
	)

Definition at line 171 of file portable.hpp.

cmpMax()

template<class Real >

PECLET_HD Real peclet::core::detail::cmpMax	(	Real	a,
		Real	b
	)

Comparison-based max, <-ordered (ties keep the earlier operand) — std::max semantics, NOT fmax's NaN-swallowing ones.

HollowCylinderShell needs exactly this to stay bit-faithful to core's std::max({...}) and voro's chained ternaries; everything ported from dem uses hdMax.

Definition at line 180 of file portable.hpp.

Referenced by peclet::core::geom::prim::HollowCylinderShell< Real >::evalRZ().