- hardening and refinement of index runtime behavior across core and accelerated paths
- expansion of deterministic reliability under mixed backend and lifecycle operations
- stronger benchmark-backed guardrails for index hot paths
- index contracts remain backward compatible within major release line.
- core lookup/mutation behavior remains deterministic under bounded constraints.
- backend degradation paths remain explicit and observable.
- lifecycle operations remain auditable and operationally controllable.
| Interface | Requirement |
|---|---|
| core index interfaces | deterministic mutation/search semantics |
| acceleration interfaces | explicit backend-aware execution with bounded fallback |
| lifecycle interfaces | stable rebuild/tiering/distribution behavior |
| optimization interfaces | bounded adaptive/replay-driven tuning behavior |
- Implemented CUDA kernels for vector similarity operations:
- L2 (squared Euclidean) distance computation
- Cosine distance with normalization
- Inner product (max-IP search)
- Batch vector search with Thrust library for efficient sorting/reduction
- Device memory management with GPU memory manager
- Stream-based async kernel execution
- FAISS/RAFT integration for advanced search algorithms
- HIP equivalent kernels for AMD GPU support
- Rocm Thrust for AMD device operations
- hipBLAS for matrix operations (dot product, GEMM)
- HIP stream management and device memory allocation
- Feature-parity with CUDA backend
- tighten parity across CPU/GPU/vector backends and fallback pathways.
- standardize diagnostics for rebuild/tiering/distribution incidents.
- expand resilience tests for prolonged retrieval/update workloads.
- broaden benchmark depth for advanced quantization and distributed scenarios.
- unit and integration suites for vector/secondary/spatial/graph index flows.
- regressions for unsupported backend and lifecycle-degradation scenarios.
- deterministic stress runs for high-concurrency index operations.
- release-profile benchmark runs for mapped index targets.
- core lookup/mutation and control-plane operations remain inside regression budgets.
- index hot paths remain stable at p95/p99 envelopes.
- mapped benchmark manifests reach no-missing-case status for release gating.
- maintain strict validation before index mutation/rebuild operations.
- preserve explicit fallback signaling for backend capability failures.
- enforce bounded lifecycle behavior under degraded runtime conditions.
- keep diagnostics actionable for production index incidents.