We demonstrate the above using design, implementation and evaluation of blk-switch, a new Linux kernel storage stack architecture. Conference Dates: Apr 12, 2021 - Apr 14, 2021. In addition, increasing CPU core counts further complicate kernel development. Responses should be limited to clarifying the submitted work. This formulation of memory management, which we call memory programming, is a generalization of paging that allows MAGE to provide a highly efficient virtual memory abstraction for SC. Fluffy found two new consensus bugs in the most popular Geth Ethereum client which were exploitable on the live Ethereum mainnet. Swapnil Gandhi and Anand Padmanabha Iyer, Microsoft Research. DistAI: Data-Driven Automated Invariant Learning for Distributed Protocols Jianan Yao, Runzhou Tao, Ronghui Gu, Jason Nieh . Authors are also encouraged to contact the program co-chairs, osdi21chairs@usenix.org, if needed to relate their OSDI submissions to relevant submissions of their own that are simultaneously under review or awaiting publication at other venues. PET then automatically corrects results to restore full equivalence. Notification of conditional accept/reject for revisions: 3 March 2022. Amy Tai, VMware Research; Igor Smolyar, Technion Israel Institute of Technology; Michael Wei, VMware Research; Dan Tsafrir, Technion Israel Institute of Technology and VMware Research. These are hard deadlines, and no extensions will be given. We particularly encourage contributions containing highly original ideas, new approaches, and/or groundbreaking results. HotCRP.com signin Sign in using your HotCRP.com account. It then feeds those invariants and the desired safety properties to an SMT solver to check if the conjunction of the invariants and the safety properties is inductive. The NVMe zoned namespace (ZNS) is emerging as a new storage interface, where the logical address space is divided into fixed-sized zones, and each zone must be written sequentially for flash-memory-friendly access. Thanks to selective profiling, DMons profiling overhead is 1.36% on average, making it feasible for production use. Main conference program: 5-8 April 2022. Starting with small invariant formulas and strongest possible invariants avoids large SMT queries, improving SMT solver performance. OSDI takes a broad view of the systems area and solicits contributions from many fields of systems practice, including, but not limited to, operating systems, file and storage systems, distributed systems, cloud computing, mobile systems, secure and reliable systems, systems aspects of big data, embedded systems, virtualization, networking as it relates to operating systems, and management and troubleshooting of complex systems. In addition, CLP outperforms Elasticsearch and Splunk Enterprise's log ingestion performance by over 13x, and we show CLP scales to petabytes of logs. When further combined with a simple caching strategy, our evaluation shows that P3 is able to outperform existing state-of-the-art distributed GNN frameworks by up to 7. We develop rigorous theoretical foundations to simplify equivalence examination and correction for partially equivalent transformations, and design an efficient search algorithm to quickly discover highly optimized programs by combining fully and partially equivalent optimizations at the tensor, operator, and graph levels. A graph neural network (GNN) enables deep learning on structured graph data. All submissions will be treated as confidential prior to publication on the USENIX OSDI 21 website; rejected submissions will be permanently treated as confidential. The 15th USENIX Symposium on Operating Systems Design and Implementation (OSDI '21) will take place as a virtual event on July 14-16, 2021. Pollux is implemented and publicly available as part of an open-source project at https://github.com/petuum/adaptdl. They collectively make the backup fresh, columnar, and fault-tolerant, even facing millions of concurrent transactions per second. A glance at this year's OSDI program shows that Operating Systems are a small niche topic for this conference, not even meriting their own full session. For example, traditional compute resources are replenishable while privacy is not: a CPU can be regained after a model finishes execution while privacy budget cannot. If you have any questions about conflicts, please contact the program co-chairs. For more details on the submission process, and for templates to use with LaTeX, Word, etc., authors should consult the detailed submission requirements. A significant obstacle to using SC for practical applications is the memory overhead of the underlying cryptography. Commonly used log archival and compression tools like Gzip provide high compression ratio, yet searching archived logs is a slow and painful process as it first requires decompressing the logs. Evaluations show that Vegito can perform 1.9 million TPC-C NewOrder transactions and 24 TPC-H-equivalent queries per second simultaneously, which retain the excellent performance of specialized OLTP and OLAP counterparts (e.g., DrTM+H and MonetDB). Kirk Rodrigues, Yu Luo, and Ding Yuan, University of Toronto and YScope Inc. Sat, Aug 7, 2021 3 min read researches review. Instead, we propose addressing the root cause of the heuristics problem by allowing software to explicitly specify to the device if submitted requests are latency-sensitive. He joined Intel Research at Berkeley in April 2002 as a principal architect of PlanetLab, an open, shared platform for developing and deploying planetary-scale services. All the times listed below are in Pacific Daylight Time (PDT). ), Program Co-Chairs: Angela Demke Brown, University of Toronto, and Jay Lorch, Microsoft Research. The NAL eliminates remote PM accesses to hot items without inducing extra local PM accesses. Alas, existing profiling techniques incur high overhead when used to identify data locality problems and cannot be deployed in production, where programs may exhibit previously-unseen performance problems. Existing decentralized systems like Steemit, OpenBazaar, and the growing number of blockchain apps provide alternatives to existing services. Unfortunately, because devices lack the semantic information about which I/O requests are latency-sensitive, these heuristics can sometimes lead to disastrous results. HotNets provides a venue for discussing innovative ideas and for debating future research agendas in networking. Furthermore, such performance can be achieved without any modification in applications, network hardware, kernel CPU schedulers and/or kernel network stack. To adapt to different workloads, prior works mix or switch between a few known algorithms using manual insights or simple heuristics. Research Impact Score 9.24. . Writing a correct operating system kernel is notoriously hard. JEL codes: Q18, Q28, Q57 . We present application studies for 8 applications, improving requests-per-second (RPS) by 7.7% and reducing RAM usage 2.4%. While verifying GoJournal, we found one serious concurrency bug, even though GoJournal has many unit tests. Just using Lambdas on top of CPU servers offers up to 2.75 more performance-per-dollar than training only with CPU servers. Researchers from the Software Systems Laboratory bagged Best Paper Awards at the 15th USENIX Symposium on Operating Systems Design and Implementation (OSDI 2021) and the 2021 USENIX Annual Technical Conference (USENIX ATC 2021).. Jay Lepreau Best Paper Award, OSDI'21. Academic and industrial participants present research and experience papers that cover the full range of theory and practice of computer . This motivates the need for a new approach to data privacy that can provide strong assurance and control to users. Third, GNNAdvisor capitalizes on the GPU memory hierarchy for acceleration by gracefully coordinating the execution of GNNs according to the characteristics of the GPU memory structure and GNN workloads. DistAI generates data by simulating the distributed protocol at different instance sizes and recording states as samples. Despite having the same end goals as traditional ML, FL executions differ significantly in scale, spanning thousands to millions of participating devices. Devices employ adaptive interrupt coalescing heuristics that try to balance between these opposing goals. Most existing schedulers expect users to specify the number of resources for each job, often leading to inefficient resource use. blk-switch evaluation over a variety of scenarios shows that it consistently achieves s-scale average and tail latency (at both 99th and 99.9th percentiles), while allowing applications to near-perfectly utilize the hardware capacity. To evaluate the security guarantees of Storm, we build a formally verified reference implementation using the Labeled IO (LIO) IFC framework. Machine learning (ML) models trained on personal data have been shown to leak information about users. GoJournal is implemented in Go, and Perennial is implemented in the Coq proof assistant. We also verified a simple NFS server using GoJournals specs, which confirms that they are helpful for application verification: a significant part of the proof doesnt have to consider concurrency and crashes. The file system performance of the proposed ZNS+ storage system was 1.33--2.91 times better than that of the normal ZNS-based storage system. Existing algorithms are designed to work well for certain workloads. We implemented the ZNS+ SSD at an SSD emulator and a real SSD. Important Dates Abstract registrations due: Thursday, December 3, 2020, 3:00 pm PST Complete paper submissions due: Thursday, December 10, 2020, 3:00pm PST Author Response Period Poor data locality hurts an application's performance. Papers so short as to be considered extended abstracts will not receive full consideration. The key insight guiding our design is computation separation. USENIX discourages program co-chairs from submitting papers to the conferences they organize, although they are allowed to do so. This is the first OSDI in an odd year as OSDI moves to a yearly cadence. Radia Perlman is a Fellow at Dell Technologies. Although SSDs can be simplified under the current ZNS interface, its counterpart LFS must bear segment compaction overhead. Novel system designs, thorough empirical work, well-motivated theoretical results, and new application areas are all . We also show that Marius can scale training to datasets an order of magnitude beyond a single machine's GPU and CPU memory capacity, enabling training of configurations with more than a billion edges and 550 GB of total parameters on a single machine with 16 GB of GPU memory and 64 GB of CPU memory. Welcome to the 16th USENIX Symposium on Operating Systems Design and Implementation (OSDI '22) submissions site. AI enables principled representation of knowledge, complex strategy optimization, learning from data, and support to human decision making. Second, GNNAdvisor implements a novel and highly-efficient 2D workload management tailored for GNN computation to improve GPU utilization and performance under different application settings. For general conference information, see https://www.usenix.org/conference/osdi22. Some recent schedulers choose job resources for users, but do so without awareness of how DL training can be re-optimized to better utilize the provided resources. Pollux simultaneously considers both aspects. PC members are not required to read supplementary material when reviewing the paper, so each paper should stand alone without it. As has been standard practice in OSDI and SOSP in recent years, we will allow authors to submit quick responses to PC reviews: they will be made available to the PC before the final online discussion and PC meeting. Indeed, it is a prime target for powerful adversaries such as nation states. This budget is a scarce resource that must be carefully managed to maximize the number of successfully trained models. If your accepted paper should not be published prior to the event, please notify production@usenix.org. Web pages today commonly include large amounts of JavaScript code in order to offer users a dynamic experience. Second, it innovates on the underlying cryptographic machinery and constructs a new private information retrieval scheme, FastPIR, that reduces the time to process oblivious access requests for mailboxes. However, memory allocation decisions also impact overall application performance via data placement, offering opportunities to improve fleetwide productivity by completing more units of application work using fewer hardware resources. Session Chairs: Deniz Altinbken, Google, and Rashmi Vinayak, Carnegie Mellon University, Tanvir Ahmed Khan and Ian Neal, University of Michigan; Gilles Pokam, Intel Corporation; Barzan Mozafari and Baris Kasikci, University of Michigan. Please identify yourself as a presenter and include your mailing address in your email. Conference site 49 papers accepted out of 251 submitted. Session Chairs: Ryan Huang, Johns Hopkins University, and Manos Kapritsos, University of Michigan, Jianan Yao, Runzhou Tao, Ronghui Gu, Jason Nieh, Suman Jana, and Gabriel Ryan, Columbia University. With an aim to improve time-to-accuracy performance in model training, Oort prioritizes the use of those clients who have both data that offers the greatest utility in improving model accuracy and the capability to run training quickly. However, a plethora of recent data breaches show that even widely trusted service providers can be compromised. Her robot soccer teams have been RoboCup world champions several times, and the CoBot mobile robots have autonomously navigated for more than 1,000km in university buildings. Youngseok Yang, Seoul National University; Taesoo Kim, Georgia Institute of Technology; Byung-Gon Chun, Seoul National University and FriendliAI. Weak Links in Authentication Chains: A Large-scale Analysis of Email Sender Spoofing Attacks Mothy received a PhD in 1995 from the Computer Laboratory of the University of Cambridge, where he was a principal designer and builder of the Nemesis OS. NrOS replicates kernel state on each NUMA node and uses operation logs to maintain strong consistency between replicas. These scripts often make pages slow to load, partly due to a fundamental inefficiency in how browsers process JavaScript content: browsers make it easy for web developers to reason about page state by serially executing all scripts on any frame in a page, but as a result, fail to leverage the multiple CPU cores that are readily available even on low-end phones. A scientific paper consists of a constellation of artifacts that extend beyond the document itself: software, hardware, evaluation data and documentation, raw survey results, mechanized proofs, models, test suites, benchmarks, and so on. The NAL maintains 1) per-node partial views in PM for serving insert/update/delete operations with failure atomicity and 2) a global view in DRAM for serving lookup operations. Mothy joined the Computer Science Department ETH Zurich in January 2007 and was named Fellow of the ACM in 2013 for contributions to operating systems and networking research. We propose Marius, a system for efficient training of graph embeddings that leverages partition caching and buffer-aware data orderings to minimize disk access and interleaves data movement with computation to maximize utilization. Dorylus is up to 3.8 faster and 10.7 cheaper compared to existing sampling-based systems. Lifting predicates and crash framing make the specification easy to use for developers, and logically atomic crash specifications allow for modular reasoning in GoJournal, making the proof tractable despite complex concurrency and crash interleavings. We built an FPGA prototype of the nanoPU fast path by modifying an open-source RISC-V CPU, and evaluated its performance using cycle-accurate simulations on AWS FPGAs. For realistic workloads, KEVIN improves throughput by 68% on average. J.P. Morgan AI Research partners with applied data analytics teams across the firm as well as with leading academic institutions globally. Ethereum is the second-largest blockchain platform next to Bitcoin. Prepublication versions of the accepted papers from the summer submission deadline are available below. Academic and industrial participants present research and experience papers that cover the full range of theory . MAGE outperforms the OS virtual memory system by up to an order of magnitude, and in many cases, runs SC computations that do not fit in memory at nearly the same speed as if the underlying machines had unbounded physical memory to fit the entire computation. We introduce a hybrid cryptographic protocol for privacy-adhering transformations of encrypted data. The papers will be available online to everyone beginning on the first day of the conference, July 14, 2021. Tao Luo, Mingen Pan, Pierre Tholoniat, Asaf Cidon, and Roxana Geambasu, Columbia University; Mathias Lcuyer, Microsoft Research. VLDB 2021: Venue Tivoli Hotel & Congress Center Arni Magnussons Gade 2 1577 Copenhagen, Denmark +45 3268 4300 In-person attendees can purchase tickets for the park / gardens with a 15% discount, which is a special offer by Tivoli Hotel & Congress Center to VLDB 2021 attendees. Jason Mohoney and Roger Waleffe, University of WisconsinMadison; Henry Xu, University of Maryland, College Park; Theodoros Rekatsinas and Shivaram Venkataraman, University of WisconsinMadison. This is unfortunate because good OS design has always been driven by the underlying hardware, and right now that hardware is almost unrecognizable from ten years ago, let alone from the 1960s when Unix was written. DeSearch uses trusted hardware to build a network of workers that execute a pipeline of small search engine tasks (crawl, index, aggregate, rank, query). Qing Wang, Youyou Lu, Junru Li, and Jiwu Shu, Tsinghua University. Widely used log-search tools like Elasticsearch and Splunk Enterprise index the logs to provide fast search performance, yet the size of the index is within the same order of magnitude as the raw log size. Horcruxs JavaScript scheduler then uses this information to judiciously parallelize JavaScript execution on the client-side so that the end-state is identical to that of a serial execution, while minimizing coordination and offloading overheads. Registering abstracts a week before paper submission is an essential part of the paper-reviewing process, as PC members use this time to identify which papers they are qualified to review. Copyright to the individual works is retained by the author[s]. She developed the technology for making network routing self-stabilizing, largely self-managing, and scalable. If your paper is accepted and you need an invitation letter to apply for a visa to attend the conference, please contact conference@usenix.org as soon as possible. In 2023 I started another two-year term on the . OSDI will provide an opportunity for authors to respond to reviews prior to final consideration of the papers at the program committee meeting. We convert five state-of-the-art PM indexes using Nap. Used Zotero to organize papers about the stress and diffusion between anode and electrolyte and made a summary . Uniquely, Dorylus can take advantage of serverless computing to increase scalability at a low cost. Perennial 2.0 makes this possible by introducing several techniques to formalize GoJournals specification and to manage the complexity in the proof of GoJournals implementation. Camera-ready submission (all accepted papers): 15 Mars 2022. Professor Veloso earned a Bachelor and Master of Science degrees in Electrical and Computer Engineering from Instituto Superior Tecnico in Lisbon, Portugal, a Master of Arts in Computer Science from Boston University, and Master of Science and PhD in Computer Science from Carnegie Mellon University. Under different configurations of TPC-C and TPC-E, Polyjuice can achieve throughput numbers higher than the best of existing algorithms by 15% to 56%. In this paper, we propose a software-hardware co-design to support dynamic, fine-grained, large-scale secure memory as well as fast-initialization. Using selective profiling, we build DMon, a system that can automatically locate data locality problems in production, identify access patterns that hurt locality, and repair such patterns using targeted optimizations. Each new model trained with DP increases the bound on data leakage and can be seen as consuming part of a global privacy budget that should not be exceeded. First, it enables a caller to push a message to a callee in two hops, using a new way of assigning mailboxes to users that resembles how a post office assigns PO boxes to its customers. SC is being increasingly adopted by industry for a variety of applications. In particular, responses must not include new experiments or data, describe additional work completed since submission, or promise additional work to follow. We discuss the design and implementation of TEMERAIRE including strategies for hugepage-aware memory layouts to maximize hugepage coverage and to minimize fragmentation overheads. To remedy this, we introduce DeSearch, the first decentralized search engine that guarantees the integrity and privacy of search results for decentralized services and blockchain apps. The key to our solution, Horcrux, is to account for the non-determinism intrinsic to web page loads and the constraints placed by the browsers API for parallelism. The OSDI Symposium emphasizes innovative research as well as quantified or insightful experiences in systems design and implementation. Shaghayegh Mardani, UCLA; Ayush Goel, University of Michigan; Ronny Ko, Harvard University; Harsha V. Madhyastha, University of Michigan; Ravi Netravali, Princeton University. Distributed systems are notoriously hard to implement correctly due to non-determinism. Computation separation makes it possible to construct a deep, bounded-asynchronous pipeline where graph and tensor parallel tasks can fully overlap, effectively hiding the network latency incurred by Lambdas. My paper has accepted to appear in the EuroSys2020; I will have a talk at the Hotstorage'19; The Paper about GCMA Accepted to TC; Welcome to the 2021 USENIX Annual Technical Conference (ATC '21) submissions site! Simultaneous submission of the same work to multiple venues, submission of previously published work, or plagiarism constitutes dishonesty or fraud. However, your OSDI submission must use an anonymized name for your project or system that differs from any used in such contexts. Researchers from the Software Systems Laboratory bagged a Best Paper Award at the 16th USENIX Symposium on Operating Systems Design and Implementation (OSDI 2021). Overall, the OSDI PC accepted 31 out of 165 submissions. Today, privacy controls are enforced by data curators with full access to data in the clear.