Rename async to graph-index in diskann-benchmark

[harsha-simhadri]

Summary

Renames all async references in the diskann-benchmark crate to graph-index, since these benchmarks exercise the graph index (not async I/O). This improves clarity for users reading benchmark names and configs.

Changes

Source code

• File rename: src/inputs/async_.rs -> src/inputs/graph_index.rs (module declaration updated)
• 7 input registration tags renamed (e.g. async-index-build -> graph-index-build)
• ~25 backend registration names updated across benchmarks.rs, product.rs, scalar.rs, spherical.rs
• 8 import paths updated from inputs::async_:: -> inputs::graph_index::
• Display strings and comments updated throughout

Bug fix

• Fixed copy-paste bug in scalar.rs: stub registered as "async-pq" (from product.rs) instead of "graph-index-sq"

JSON configs

• Renamed 10 JSON example/perf_test files (e.g. async.json -> graph-index.json)
• Updated "type" fields inside JSON files to match new names

Tests and docs

• Renamed 3 test functions in main.rs
• Updated README.md benchmark references and example commands

Verification

• cargo check -p diskann-benchmark --all-targets passes cleanly
• Grep confirms no stale async references remain (only Rust keyword usage and unrelated API types)

[codecov-commenter]

Codecov Report

❌ Patch coverage is 77.14286% with 8 lines in your changes missing coverage. Please review.
✅ Project coverage is 89.49%. Comparing base (45428af) to head (43b591f).

Files with missing lines	Patch %	Lines
diskann-benchmark/src/inputs/graph_index.rs	42.85%	8 Missing ⚠️

❌ Your patch status has failed because the patch coverage (77.14%) is below the target coverage (90.00%). You can increase the patch coverage or adjust the target coverage.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1009   +/-   ##
=======================================
  Coverage   89.49%   89.49%           
=======================================
  Files         448      448           
  Lines       84118    84122    +4     
=======================================
+ Hits        75282    75286    +4     
  Misses       8836     8836           

Flag	Coverage Δ
miri	89.49% <77.14%> (+<0.01%)	⬆️
unittests	89.33% <77.14%> (+<0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
diskann-benchmark/src/backend/index/benchmarks.rs	49.39% <100.00%> (+0.30%)	⬆️
diskann-benchmark/src/backend/index/build.rs	85.92% <ø> (ø)
diskann-benchmark/src/backend/index/product.rs	100.00% <100.00%> (ø)
diskann-benchmark/src/backend/index/scalar.rs	100.00% <100.00%> (ø)
diskann-benchmark/src/backend/index/search/knn.rs	76.56% <ø> (ø)
...iskann-benchmark/src/backend/index/search/range.rs	0.00% <ø> (ø)
diskann-benchmark/src/backend/index/spherical.rs	100.00% <ø> (ø)
...mark/src/backend/index/streaming/full_precision.rs	0.00% <ø> (ø)
diskann-benchmark/src/inputs/mod.rs	78.26% <100.00%> (ø)
diskann-benchmark/src/main.rs	91.36% <100.00%> (+0.04%)	⬆️
... and 1 more

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[harsha-simhadri]

changed to Sq

[Copilot]

Pull request overview

This PR renames the diskann-benchmark crate’s graph-index benchmark inputs, benchmark names, example files, and docs from the old async terminology to graph-index so the public-facing labels better reflect that these jobs benchmark the graph index rather than async I/O.

Changes:

• Renames graph-index input tags and benchmark registration names from async-* to graph-index-*.
• Updates imports, module wiring, tests, example JSONs, and perf-test inputs to use the renamed graph-index module and tags.
• Refreshes README commands and examples to reference the new graph-index names and files.

Reviewed changes

Copilot reviewed 25 out of 25 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
diskann-benchmark/src/main.rs	Renames integration tests and example file paths to the new graph-index filenames.
diskann-benchmark/src/inputs/mod.rs	Switches the registered input module from async_ to graph_index.
diskann-benchmark/src/inputs/graph_index.rs	Renames user-facing input tags, display strings, and comments for graph-index jobs.
diskann-benchmark/src/backend/index/streaming/full_precision.rs	Updates imports to the renamed graph-index input module.
diskann-benchmark/src/backend/index/spherical.rs	Updates spherical benchmark registration/imports to the new graph-index names.
diskann-benchmark/src/backend/index/search/range.rs	Retargets range-search input imports to graph_index.
diskann-benchmark/src/backend/index/search/knn.rs	Retargets k-NN input imports to graph_index.
diskann-benchmark/src/backend/index/scalar.rs	Renames scalar-quantized benchmark registrations and stub name, plus import paths.
diskann-benchmark/src/backend/index/product.rs	Renames product-quantized benchmark registrations/stub name and import paths.
diskann-benchmark/src/backend/index/build.rs	Updates build-path imports to the renamed graph-index module.
diskann-benchmark/src/backend/index/benchmarks.rs	Renames full-precision and dynamic benchmark registrations and graph-index imports.
diskann-benchmark/perf_test_inputs/graph_index_scalar_oai_large.json	Updates perf-test job types to the new graph-index SQ tag.
diskann-benchmark/example/spherical.json	Updates spherical example job types to the new graph-index tag.
diskann-benchmark/example/spherical-filter.json	Updates filtered spherical example job types to the new graph-index tag.
diskann-benchmark/example/scalar.json	Updates scalar example job types to the new graph-index SQ tag.
diskann-benchmark/example/product.json	Updates product example job type to the new graph-index PQ tag.
diskann-benchmark/example/graph-index.json	Renames the core graph-index example job type from async-index-build to graph-index-build.
diskann-benchmark/example/graph-index-range.json	Updates the range-search graph-index example tag.
diskann-benchmark/example/graph-index-no-filter-ground-truth.json	Updates the no-filter ground-truth example tag.
diskann-benchmark/example/graph-index-multihop-filter-ground-truth-small.json	Updates the multihop filter ground-truth example tag.
diskann-benchmark/example/graph-index-filter.json	Updates the filtered graph-index example tag.
diskann-benchmark/example/graph-index-filter-ground-truth.json	Updates the filter ground-truth example tag.
diskann-benchmark/example/graph-index-filter-ground-truth-small.json	Updates the small filter ground-truth example tag.
diskann-benchmark/example/graph-index-dynamic.json	Updates the dynamic graph-index example to the renamed dynamic input tag.
diskann-benchmark/README.md	Updates documented input kinds, benchmark names, commands, and terminology to graph-index.

Comments suppressed due to low confidence (1)

diskann-benchmark/src/inputs/graph_index.rs:658

• Renaming this registered input tag is a breaking change for existing benchmark JSON files. Jobs::parse rejects unknown tags, and the input registry only supports a single tag per type, so any existing async-index-build configs will stop loading unless we keep a compatibility alias or provide an explicit migration path.

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