EnzymeAD/Enzyme

Track the number of cached/recomputed values using the LLVM statistics macro

Open

#962 opened on Jan 9, 2023

View on GitHub
 (0 comments) (0 reactions) (0 assignees)LLVM (165 forks)github user discovery
good first issue

Repository metrics

Stars
 (1,613 stars)
PR merge metrics
 (Avg merge 3d 2h) (49 merged PRs in 30d)

Description

https://llvm.org/docs/ProgrammersManual.html#id38

#include "llvm/ADT/Statistic.h"

STATISTIC(NumCachedValues, "Number of values cached");
STATISTIC(NumRecomputedValues, "Number of values recomputed");

Other stats to track:

  • GPU gradient accumulation
    • Non-atomic load/store
    • Parallel Reduction
    • Atomic increment
  • Allocation Merging
  • Heap-to-stack (and register)

Contributor guide

Research direction
Add STATISTIC macros for NumCachedValues and NumRecomputedValues in the relevant Enzyme code, and instrument caching and recomputation paths. Also consider tracking GPU gradient accumulation stats (non atomic load/store, parallel reduction, atomic increment), allocation merging, and heap to stack/register transitions.
Tech stack
cpp
Domain
backendcompilers
Issue type
Feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Fresh
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
LLVMC++
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
60