Struct MegakernelReport 

pub struct MegakernelReport {
    pub items_processed: u64,
    pub items_remaining: u64,
    pub wall_time: Duration,
    pub queue_plan_ns: u64,
    pub queue_publish_ns: u64,
    pub backend_dispatch_ns: u64,
    pub lineage_ns: u64,
    pub deduped_items: u64,
    pub published_items: u64,
    pub lineage_items: u64,
    pub telemetry: MegakernelTelemetry,
    pub region_lineage: Vec<u32>,
}

Summary stats from one megakernel run.

Fields

items_processed: u64

Items the workers processed before exiting.

items_remaining: u64

Items still queued when max_wall_time fired.

wall_time: Duration

Wall-clock time spent.

queue_plan_ns: u64

Host-side time spent shaping the queue before publication: dedupe, fusion planning, and launch-geometry preparation.

queue_publish_ns: u64

Host-side time spent encoding protocol buffers and publishing queued work into ring slots.

backend_dispatch_ns: u64

Host-observed backend dispatch latency after queue publication.

lineage_ns: u64

Host-observed time spent computing optional region lineage after dispatch. Zero when lineage tracking is skipped.

deduped_items: u64

Logical work items removed by queue dedupe before publication.

published_items: u64

Work items actually published into megakernel ring slots.

lineage_items: u64

Number of work items included in region lineage tracking.

telemetry: MegakernelTelemetry

Production counters for performance gates and launch tuning.

region_lineage: Vec<u32>

Per-output provenance lineage bitsets, one entry per fused region in dispatch order. lineage[i] is a 32-bit set of source-rule IDs that contributed to fused-region i’s output, computed via the substrate vyre_self_substrate::scallop_provenance Datalog closure on the rule-derivation graph. Empty Vec when provenance tracking was disabled for the dispatch.

Lets observability collectors (Tempo, Honeycomb, Prometheus) attribute every megakernel output back to the source rules that derived it - without this, fused-region outputs lose their lineage.

Trait Implementations

impl Clone for MegakernelReport

fn clone(&self) -> MegakernelReport

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MegakernelReport

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

Formats the value using the given formatter.

impl Default for MegakernelReport

fn default() -> MegakernelReport

Returns the “default value” for a type.