Misc

starter.param

namespace picongpu

seed.param

namespace picongpu

Enums

enum picongpuSeeds

Values:

picongpuTEMPERATURE_SEED = 255845

picongpuPOSITION_SEED = 854666252

picongpuIONIZATION_SEED = 431630977

picongpuFREERNG_SEED = 99991

struct picongpuGlobalSeed

global seed

global seed to derive GPU local seeds from

• vary it to shuffle pseudo random generators for exactly same simulation
• note: even when kept constant, highly parallel simulations do not ensure 100% deterministic simulations on the floating point level

Public Functions

uint32_t picongpu::GlobalSeedoperator()()

physicalConstants.param

namespace picongpu

Variables

constexpr float_64 picongpuPI = 3.141592653589793238462643383279502884197169399

constexpr float_64 picongpuUNITCONV_keV_to_Joule = 1.60217646e-16

constexpr float_64 picongpuUNITCONV_Joule_to_keV = (1.0 / UNITCONV_keV_to_Joule)

constexpr float_64 picongpuUNITCONV_AU_to_eV = 27.21139

constexpr float_64 picongpuUNITCONV_eV_to_AU = (1.0 / UNITCONV_AU_to_eV)

namespace picongpuSI

Variables

constexpr float_64 picongpu::SISPEED_OF_LIGHT_SI = 2.99792458e8

unit: m / s

constexpr float_64 picongpu::SIMUE0_SI = PI * 4.e-7

unit: N / A^2

constexpr float_64 picongpu::SIEPS0_SI = 1.0 / MUE0_SI / SPEED_OF_LIGHT_SI / SPEED_OF_LIGHT_SI

unit: C / (V m)

constexpr float_64 picongpu::SIHBAR_SI = 1.054571800e-34

reduced Planck constant unit: J * s

constexpr float_64 picongpu::SIELECTRON_MASS_SI = 9.109382e-31

unit: kg

constexpr float_64 picongpu::SIELECTRON_CHARGE_SI = -1.602176e-19

unit: C

constexpr float_64 picongpu::SIATOMIC_UNIT_ENERGY = 4.36e-18

constexpr float_64 picongpu::SIATOMIC_UNIT_EFIELD = 5.14e11

constexpr float_64 picongpu::SIATOMIC_UNIT_TIME = 2.4189e-17

constexpr float_64 picongpu::SIN_AVOGADRO = 6.02214076e23

Avogadro number unit: mol^-1.

Y. Azuma et al. Improved measurement results for the Avogadro constant using a 28-Si-enriched crystal, Metrologie 52, 2015, 360-375 doi:10.1088/0026-1394/52/2/360