Struct ExtMemOpts 

pub struct ExtMemOpts {
    pub max_context: usize,
    pub subproblem_count: usize,
    pub work_dir: PathBuf,
    pub physical_file_count: usize,
}

Tunable options for build_ext_mem.

Fields

max_context: usize

Bound on LCP-extension comparisons inside merges. usize::MAX (default) is unbounded.

subproblem_count: usize

Number of subarrays (p in upstream CaPS-SA). 0 (default) picks 4 × rayon::current_num_threads(), clamped to [1, n].

work_dir: PathBuf

Directory for temp files. Defaults to std::env::temp_dir.

physical_file_count: usize

Number of physical files in the bucket pool (one pool for the phase-1 subarray buckets and a second for the phase-3 partition buckets). 0 (default) picks rayon::current_num_threads() — the right answer in practice: one writable inode per worker keeps kernel-level write contention bounded.

The 2 × p logical buckets (typically thousands at genome scale) collapse onto this pool of anonymous tempfiles via bucket_id % physical_file_count. Larger values lower kernel write contention; smaller values are kinder to networked filesystems with high metadata cost. The CAPS_SA_N_PHYS env var overrides this for one-off benches.

Implementations

impl ExtMemOpts

pub fn with_work_dir(work_dir: impl AsRef<Path>) -> Self

Convenience constructor with the supplied work_dir and defaults for everything else.

Trait Implementations

impl Clone for ExtMemOpts

fn clone(&self) -> ExtMemOpts

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ExtMemOpts

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

Formats the value using the given formatter.

impl Default for ExtMemOpts

fn default() -> Self

Returns the “default value” for a type.