Enum dslab_compute::multicore::CoresDependency

pub enum CoresDependency {
    Linear,
    LinearWithFixed {
        fixed_part: f64,
    },
    Custom {
        func: fn(_: u32) -> f64,
    },
}

Function from [1, max_cores] to [1, +inf] describing the dependency between the number of cores used for running a task and achieved parallel speedup.

Variants

Linear

Linear dependency: speedup(cores) = cores

LinearWithFixed

Linear dependency with fixed part corresponding to Amdahl’s law: speedup(cores) = 1 / (fixed_part + (1 - fixed_part) / cores)

Fields

fixed_part: f64

Fraction of a computation which can’t be parallelized.

Custom

Custom dependency.

Fields

func: fn(_: u32) -> f64

Custom speedup function.

Implementations

impl CoresDependency

pub fn speedup(&self, cores: u32) -> f64

Speedup achieved when using the given number of cores compared to using a single core.

Trait Implementations

impl Clone for CoresDependency

fn clone(&self) -> CoresDependency

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for CoresDependency

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Serialize for CoresDependency

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for CoresDependency