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Peter Pietzuch

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GRANNY: Granular Management of Compute-Intensive Applications in the CloudNSDI '252025-04-28
A distributed runtime called GRANNY uses a WebAssembly-based execution abstraction to run one-vCPU Granules that offer either thread (OpenMP) or process (MPI)…
Talk on
ORC: Increasing Cloud Memory Density via Object Reuse with CapabilitiesOSDI 20232023-07-10
ORC builds a runtime that reuses immutable binary objects across tenants by using hardware memory capabilities (ARM/CHERI-style) and a new relocation type to…
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Translation Pass-Through for Near-Native Paging Performance in VMsUSENIX ATC '232023-07-10
Proposes Translation Pass-Through (TPT): guests build one-dimensional guest-virtual→host-physical page tables while the host enforces isolation via a per-VM…
Talk
MSRL: Distributed Reinforcement Learning with Dataflow FragmentsUSENIX ATC '232023-07-10
Claims a new fragmented dataflow graph abstraction that splits an RL training loop into independent fragments mapped to CPU, CUDA kernels or DNN operator…
Talk on
IA-CCF: Individual Accountability for Permissioned Ledgers19th USENIX Symposium on Networked Systems Design and Implementation (NSDI '22)2022-04-04
A permissioned ledger implementation called IA-CCF signs and logs BFT protocol messages into the ledger and issues Merkle-tree receipts that clients can audit…
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Faasm: Lightweight Isolation for Efficient Stateful Serverless ComputingUSENIX ATC '202020-07-15
Faasm implements thread-based Faaslets on WebAssembly SFI to let co‑located functions share memory directly, use a minimal POSIX host interface, and restore…
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Spotnik: Designing Distributed Machine Learning for Transient Cloud ResourcesHotCloud '202020-07-13
SPOTNIK implements an adaptive all-reduce ring that repairs membership without global checkpoints, uses an atomic barrier so partially applied parameter…
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