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Tomoharu Ugawa

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  • ISMM2 editions2024–2025

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titleconferencedate
Gray-in-Young: A Generational Garbage Collection for Processing-in-MemoryISMM 20252025-06-17
A generational GC for UPMEM DPUs keeps the young generation in SPM and copies objects to old DRAM only after pointer updates, using reserve-and-scan to batch…
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Reducing Write Barrier Overheads for Orthogonal PersistenceSLE 20242024-10-20
Implements replication-based persistency (RBP) inside HotSpot VM (OpenJDK) and shifts the expensive fence from every putfield to copier-weight handshakes that…
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A Managed Memory System for micro controllers with NOR flash memoryISMM 20242024-06-25
Prototype implements a managed virtual memory for microcontrollers (mruby on Raspberry Pi Pico with 264 KB SRAM and 2 MB NOR flash) that combines an eager…
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Collecting Cyclic Garbage across Foreign Function Interfaces: Who Takes the Last Piece(…)PLDI 20232023-06-17
Refgraph GC coordinates two independent tracing collectors by copying a compressed reference graph from Ruby into an unmodified JavaScript runtime so the JS…
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Profile Guided Offline Optimization of Hidden Class Graphs for JavaScript VMs in EmbeddedVMIL 20222022-12-05
Collects hidden‑class graphs from a profiling run, rewrites the graph offline to remove intermediate transition nodes and to move unlikely property branches to…
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