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CpuCapabilities

cbtop::optimize

Struct CpuCapabilities 

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pub struct CpuCapabilities {
    pub cores: usize,
    pub max_freq_mhz: u32,
    pub has_avx512: bool,
    pub has_avx2: bool,
    pub l1d_cache: usize,
    pub l2_cache: usize,
    pub l3_cache: usize,
    pub mem_bandwidth_gbs: f64,
}
Expand description

Detected CPU capabilities for theoretical peak calculation

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§cores: usize

Number of physical cores

§max_freq_mhz: u32

Max frequency in MHz

§has_avx512: bool

AVX-512 support

§has_avx2: bool

AVX2 support

§l1d_cache: usize

L1 data cache size in bytes

§l2_cache: usize

L2 cache size in bytes

§l3_cache: usize

L3 cache size in bytes

§mem_bandwidth_gbs: f64

Memory bandwidth estimate in GB/s

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impl CpuCapabilities

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pub fn detect() -> Self

Detect CPU capabilities at runtime

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pub fn compute_peak_gflops(&self) -> f64

Calculate theoretical peak GFLOP/s for compute-bound operations

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pub fn memory_peak_gflops(&self, bytes_per_flop: f64) -> f64

Calculate theoretical peak GFLOP/s for memory-bound operations bytes_per_flop: number of bytes that must be transferred per FLOP

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pub fn theoretical_peak_for_size( &self, size: usize, _bytes_per_element: usize, bytes_per_flop: f64, ) -> f64

Calculate theoretical peak for a given size (cache vs memory bound) Uses bytes_per_flop to estimate total working set (includes all arrays)

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impl Clone for CpuCapabilities

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fn clone(&self) -> CpuCapabilities

Returns a duplicate of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for CpuCapabilities

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

Formats the value using the given formatter. Read more
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impl Default for CpuCapabilities

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fn default() -> Self

Returns the “default value” for a type. Read more

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