simd_load_store_functions.h File Reference

#include "config.h"
#include "gromacs/simd/simd.h"
#include "gromacs/utility/real.h"
#include "gromacs/utility/vectypes.h"

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Description

Defines functions to load data to and store data from SIMD registers for the SIMD 4xM and 2xMM kernels.

Author

Berk Hess hess@.nosp@m.kth..nosp@m.se

Typedefs
typedef SimdReal	gmx::SimdBitMask
	Define SimdBitMask as a real SIMD register.

Functions
template<KernelLayoutClusterRatio clusterRatio>
static int	gmx::cjFromCi (const int iCluster)
	Returns the j-cluster index for the given i-cluster index. More...
template<KernelLayout kernelLayout>
std::enable_if_t< kernelLayout==KernelLayout::r4xM, SimdReal >	gmx::loadIAtomData (const real *ptr, const int offset, const int iRegister)
	Load a single real for an i-atom into iRegister.
template<KernelLayout kernelLayout>
std::enable_if_t< kernelLayout==KernelLayout::r2xMM, SimdReal >	gmx::loadIAtomData (const real *ptr, const int offset, const int iRegister)
	Load a pair of consecutive reals for two i-atom into the respective halves of iRegister.
template<KernelLayout kernelLayout>
std::enable_if_t< kernelLayout==KernelLayout::r4xM, SimdReal >	gmx::loadJAtomData (const real *ptr, const int offset)
	Returns a SIMD register containing GMX_SIMD_REAL_WIDTH reals loaded from ptr + offset.
template<KernelLayout kernelLayout>
std::enable_if_t< kernelLayout==KernelLayout::r2xMM, SimdReal >	gmx::loadJAtomData (const real *ptr, const int offset)
	Returns a SIMD register containing a duplicate sequence of GMX_SIMD_REAL_WIDTH/2 reals loaded from ptr + offset.
template<bool loadMasks, KernelLayout kernelLayout>
std::enable_if_t<!loadMasks, std::array< SimdBool, 0 > >	gmx::loadSimdPairInteractionMasks (const int excl, SimdBitMask *filterBitMasksV)
	Loads no interaction masks, returns an empty array.
template<bool loadMasks, KernelLayout kernelLayout>
std::enable_if_t< loadMasks &&kernelLayout==KernelLayout::r4xM, std::array< SimdBool, sc_iClusterSize(kernelLayout)> >	gmx::loadSimdPairInteractionMasks (const int excl, SimdBitMask *filterBitMasksV)
	Loads interaction masks for a cluster pair for 4xM kernel layout.
template<bool loadMasks, KernelLayout kernelLayout>
std::enable_if_t< loadMasks &&kernelLayout==KernelLayout::r2xMM, std::array< SimdBool, sc_iClusterSize(kernelLayout)/2 > >	gmx::loadSimdPairInteractionMasks (const int excl, SimdBitMask *filterBitMasksV)
	Loads interaction masks for a cluster pair for 2xMM kernel layout.
template<int nR>
int	gmx::pairCountWithinCutoff (SimdReal rSquaredV[nR], SimdReal cutoffSquared)
	Return the number of atoms pairs that are within the cut-off distance.