Gratian Lup
Senior Compiler Engineer at NVIDIA
Seattle, Washington, United States
Summary
👤
Senior🎓
Top SchoolGratian Lup is a Senior Compiler Engineer with 13 years of low-level and systems programming experience, currently optimizing the CUDA compiler at NVIDIA. He previously led major backend and toolchain performance work at Microsoft, driving a migration to an SSA-based optimizer, implementing advanced optimizations (CSE/PRE, jump threading, redundant store elimination) and delivering dramatic linker/PDB and LTCG speedups for large AAA games. His expertise spans MLIR/LLVM backends for AI accelerators as well as profiling-driven performance tuning across compiler, linker, and debug-info components. Notably, he built testing infrastructures and integrations (Souper, Alive) to catch real-world regressions and prototype high-impact optimizations before production rollout. Based in Seattle, he combines deep algorithmic rigor with pragmatic engineering that measurably improves both generated code quality and developer iteration time.
13 years of coding experience
12 years of employment as a software developer
"Lucian Blaga" University, Sibiu, Romania"Gheorghe Lazar" High School, Sibiu, Romania
Stackoverflow
1,495reputation
111kreached
4answers
24questions
Github Skills (13)
cpu6
numa6
optimization6
suffix-tree5
clustering-algorithm4
suffix3
clustering3
consumption2
low-memory2
rust1
allocator1
memory-consumption1
concurrency1
Github contributions (5)
lgratian/compiler
Jul 2012 - Jul 2012
Contributions:2 commits in 1 day
gratianlup/DocumentClustering
Jan 2013 - Jan 2013
Contributions:4 commits in 7 days
clusteringsuffixsuffix-treeclustering-algorithm
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