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Specialized domains: Apache Spark · Apache Gluten · Velox · PyTorch OOT Backends · vLLM · LLM Acceleration · FPGA (Xilinx/AMD) · Data Analytics · Data Engineering · Parquet/Arrow · Column-store engines · Query optimization
▶ PyTorch OOT Device — custom accelerator backend, device guard, aten ops, dispatcher
▶ LLM Acceleration — inference optimization, kernel fusion, operator dispatch on custom HW
▶ AI Agent Benchmarking — evaluating benchmark validity & designing rigorous evaluations
▶ Velox internals — expression evaluation, vectorization, runtime optimization
▶ FPGA-accelerated SQL — pushing query engines into hardware
Active contributor to major Big Data and AI projects. PRs span bug fixes, feature additions, test infrastructure, and documentation across the Spark/Velox/Gluten/PyTorch/vLLM ecosystem.
✅ Merged · 🔄 Open · ❌ Closed without merge
| PR | Description | Status |
|---|---|---|
| #185694 | [library] Improve infer_schema error message when future annotations cause NameError | ✅ Merged |
| #185756 | [clamp] Fix float16 scalar overflow check inconsistency between CPU and GPU | 🔄 Open |
| #185751 | [nn] Raise ValueError early for invalid (ndim, pad_size) in non-constant F.pad modes | 🔄 Open |
| PR | Description | Status |
|---|---|---|
| #44349 | [Tests] Gate Step3VL under Transformers v5 | 🔄 Open |
| PR | Description | Status |
|---|---|---|
| #12199 | [MINOR][VL] Re-enable stale ignored atan2 test in MathFunctionsValidateSuite | 🔄 Open |
| #12158 | [GLUTEN-12157][VL] Fix silently-skipped math/scalar test suites; add Velox native tests for sin, tan, tanh, radians, ln | 🔄 Open |
| #12151 | [GLUTEN-12013][VL] Fix bloom-filter bytes corruption on whole-stage AQE fallback | 🔄 Open |
| PR | Description | Status |
|---|---|---|
| #17677 | test(parquet): Verify WriterOptions::encoding is forwarded to Arrow writer | ✅ Merged |
| #17676 | docs: Fix duplicate object description warnings in Sphinx doc build | ✅ Merged |
| #17675 | docs(geospatial): Expand convex_hull_agg and geometry_union_agg docs | ✅ Merged |
| #17669 | feat: Register Spark transform_values function | ✅ Merged |
| #17668 | perf(tpcds): Eliminate redundant map allocations in toTableName and fromTableName | ✅ Merged |
| PR | Description | Status |
|---|---|---|
| #56154 | [SPARK-49798][DOCS] Fix inaccurate documentation of RuntimeConfig.get | ✅ Merged |
| #56250 | [SPARK-56561][PYTHON][DOCS] Document order preservation for array_distinct, array_intersect, array_union, array_except | 🔄 Open |
| #56248 | [SPARK-34679][DOCS] Add inferTimestamp option to JSON data source options table | 🔄 Open |
| #56178 | [SPARK-40437][SS][PYTHON] Support string representation of durationMs in GroupState.setTimeoutDuration | 🔄 Open |
| #56174 | [SPARK-43847][PYTHON] Throw structured error when reading Protobuf descriptor file fails | 🔄 Open |
| PR | Description | Status |
|---|---|---|
| #9 | Migrate to Python3.12 | 🔄 Open |
| PR | Description | Status |
|---|---|---|
| #23104 | Fix *COLUMNS() false rejection when operators appear in lambda bodies | ❌ Closed |
| PR | Description | Status |
|---|---|---|
| #2336 | Closes: #1 | 🔄 Open |
Most of my production work lives in private repositories at Zettabolt Technologies Private Limited. The best window into my hands-on contributions is the open source PRs above — real code, real reviews, real projects.
My pinned repos include forks of the projects I actively work in:
- 🚀 apache/gluten — Spark native execution offloading to Velox
- 🧠 facebookincubator/velox — C++ vectorized execution engine
- 🔥 apache/spark — Distributed analytics engine
- 🤖 pytorch/pytorch — OOT device backend work
Open to conversations on Big Data infrastructure, accelerated computing & LLM systems.
"From the query engine to the transformer kernel — it's all just bytes waiting to go faster."