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Sebastian Raschka Blog 2026-03-14 14:45 UTC Score 25.0 USR-0116-20260314-ai-specialis-33f07230 Full article

New LLM Architecture Gallery

Visual gallery of LLM architecture variants: attention mechanisms, positional encodings, MoE, and more — with comparison figures and compact reference sheets.

When AI Discovers the Next Transformer — Robert Lange
Machine Learning Street Talk 2026-03-13 21:00 UTC Score 71.0 AI-141-20260313-podcasts-and-c52bdba8 Full article

When AI Discovers the Next Transformer — Robert Lange

Robert Lange, founding researcher at Sakana AI, joins Tim to discuss *Shinka Evolve* — a framework that combines LLMs with evolutionary algorithms to do open-ended program search. The core claim: systems like AlphaEvolve can optimize solutions to fixed problems, but real scientific progress requires co-evolving the problems themselves. GTC is coming, the premier AI conference, great opportunity to learn about AI. NVIDIA and partners will showcase breakthroughs in physical AI, AI factories, agentic AI, and inference, exploring the next wave of AI innovation for developers and researchers. Register for virtual GTC for free, using my link and win NVIDIA DGX Spark (https://nvda.ws/4qQ0LMg) In this episode: • Why AlphaEvolve gets stuck — it needs a human to hand it the right problem. Shinka tries to invent new problems automatically, drawing on ideas from POET, PowerPlay, and MAP-Elites quality-diversity search. • The *architecture* of Shinka: an archive of programs organized as islands, LLMs used as mutation operators, and a UCB bandit that adaptively selects between frontier models (GPT-5, Sonnet 4.5, Gemini) mid-run. The credit-assignment problem across models turns out to be genuinely hard. • Concrete results — state-of-the-art circle packing with dramatically fewer evaluations, second place in an AtCoder competitive programming challenge, evolved load-balancing loss functions for mixture-of-experts models, and agent scaffolds for AIME math benchmarks. • Are these systems act…

Lex Fridman Podcast 2026-03-13 11:59 UTC Score 17.0 AI-137-20260313-podcasts-and-f33c11c7 Full article

Transcript for Jeff Kaplan: World of Warcraft, Overwatch, Blizzard, and Future of Gaming | Lex Fridman Podcast #493

This is a transcript of Lex Fridman Podcast #493 with Jeff Kaplan. The timestamps in the transcript are clickable links that take you directly to that point in the main video. Please note that the transcript is human generated, and may have errors. Here are some useful links: Go back to this episode’s main page Watch the full YouTube version of the podcast Table of Contents Here are the loose “chapters” in the conversation. Click link to jump approximately to that part in the transcript: 0:00 – Episode highlight 1:27 – Introduction 4:07 – Early games: Pac-Man, Zork, Doom, Quake

Berkeley AI Research Blog 2026-03-13 09:00 UTC Score 58.0 USR-0004-20260313-research-aca-8a70deff Full article

Identifying Interactions at Scale for LLMs

--> Understanding the behavior of complex machine learning systems, particularly Large Language Models (LLMs), is a critical challenge in modern artificial intelligence. Interpretability research aims to make the decision-making process more transparent to model builders and impacted humans, a step toward safer and more trustworthy AI. To gain a comprehensive understanding, we can analyze these systems through different lenses: feature attribution , which isolates the specific input features driving a prediction ( Lundberg & Lee, 2017 ; Ribeiro et al., 2022 ); data attribution , which links model behaviors to influential training examples ( Koh & Liang, 2017 ; Ilyas et al., 2022 ); and mechanistic interpretability , which dissects the functions of internal components ( Conmy et al., 2023 ; Sharkey et al., 2025 ). Across these perspectives, the same fundamental hurdle persists: complexity at scale . Model behavior is rarely the result of isolated components; rather, it emerges from complex dependencies and patterns. To achieve state-of-the-art performance, models synthesize complex feature relationships, find shared patterns from diverse training examples, and process information through highly interconnected internal components. Therefore, grounded or reality-checked interpretability methods must also be able to capture these influential interactions . As the number of features, training data points, and model components grow, the number of potential interactions grows expon…

GitHub Engineering 2026-03-12 16:00 UTC Score 29.0 USR-0062-20260312-ai-specialis-3e2135c9 Full article

Continuous AI for accessibility: How GitHub transforms feedback into inclusion

AI automates triage for accessibility feedback, allowing us to focus on fixing barriers—turning a chaotic backlog into continuous, rapid resolutions. The post Continuous AI for accessibility: How GitHub transforms feedback into inclusion appeared first on The GitHub Blog .

One Useful Thing 2026-03-12 14:10 UTC Score 20.0 USR-0105-20260312-ai-specialis-ceb5b124 Full article

The Shape of the Thing

Where we are right now, and what likely happens next

MongoDB AI Blog 2026-03-12 14:00 UTC Score 37.0 USR-0070-20260312-ai-specialis-05c9b488 Full article

Observability and OpenTelemetry: Introducing MongoDB Atlas Log Integration

In high-stakes enterprise environments, outages do not wait for business hours, and neither do IT/Network Operators. A latency spike hits the dashboard, and metrics signal that the database is under pressure. The cause? Indeterminate. Meanwhile, the business impact is immediate: orders fail to process, customers can’t access accounts, transactions stall, and critical records become temporarily unavailable. Every minute of uncertainty translates into lost revenue, frustrated users, and escalating pressure. Teams often fall back on a familiar—yet time-consuming—ritual: logging into their data platform, exporting large log files, extracting compressed archives, and manually searching through thousands of lines of entries to identify the issue. What should be a quick diagnosis becomes a manual context-switching investigation. By the time the problematic query, configuration issue, or audit event is identified, users have already experienced the disruption—and the business has absorbed the cost. MongoDB believes the database should be the heartbeat of a digital business. So we’re introducing a new log integration that brings MongoDB Atlas system and audit logs directly into external observability and storage platforms. This enhancement helps bridge the gap between metrics and meaning when it matters most. Flexible log delivery for modern observability workflows Now database operators, DevOps pros, and IT Operations teams alike can send MongoDB system and audit logs—including mong…

Sebastian Raschka Blog 2026-03-12 08:07 UTC Score 28.0 USR-0116-20260312-ai-specialis-1dc2ce2c Full article

Nemotron 3 Super Throughput Notes

Short note on NVIDIA Nemotron 3 Super 120B-A12B, a hybrid Mamba-Transformer MoE model with latent experts and shared-weight MTP.

METR 2026-03-12 07:00 UTC Score 33.0 USR-0147-20260312-research-aca-f0d1f33a Full article

Review of the Anthropic Sabotage Risk Report: Claude Opus 4.6

We reviewed two versions of Anthropic’s Sabotage Risk Report for Claude Opus 4.6, producing two corresponding review documents: our review of the February 11 version and our review of the March 3 version . We recommend that readers refer to our review of the February 11 version, which represents our review of the report as originally received. We expect the public version of the Sabotage Risk Report to be updated to resemble the document we received on March 3, 2026 in content, though not necessarily in exact wording. We expect our second review to cover those changes, but if the updated public version includes any changes that materially affect our opinions, we will publish an updated review. Both documents include an appendix detailing our review process and the differences between the two versions of our review. The following is the executive summary of our review of the February 11 version. The full documents are available as PDFs ( February 11 , March 3 ). Executive summary This document is METR’s external review of the February 11, 2026 version of Anthropic’s Sabotage Risk Report: Claude Opus 4.6. Anthropic shared an unredacted version of their Sabotage Risk Report and other materials with us for our review. We further detail this process in an appendix. We lay out our findings in two sections: Synopsis of Anthropic’s case and redactions for the public version Our assessment: We give substantive feedback on the report in a few key areas: Adequacy of information: We thi…

Lex Fridman Podcast 2026-03-11 20:37 UTC Score 22.0 AI-137-20260311-podcasts-and-b2a5ff58 Full article

#493 – Jeff Kaplan: World of Warcraft, Overwatch, Blizzard, and Future of Gaming

Jeff Kaplan is a legendary Blizzard game designer of World of Warcraft and Overwatch, now preparing to launch a new game, The Legend of California, from his new studio Kintsugiyama – available to wishlist on Steam today, with alpha later in March. Thank you for listening ❤ Check out our sponsors: https://lexfridman.com/sponsors/ep493-sc See below for timestamps, and to give feedback, submit questions, contact Lex, etc. CONTACT LEX: Feedback – give feedback to Lex: https://lexfridman.com/survey AMA – submit questions, videos or call-in: https://lexfridman.com/ama Hiring – join our team: https://lexfridman.com/hiring Other – other ways to get in touch: https://lexfridman.com/contact EPISODE LINKS: The

TWIML AI Podcast 2026-03-10 23:25 UTC Score 39.0 AI-148-20260310-podcasts-and-a23d20be Full article

Agent Swarms and Knowledge Graphs for Autonomous Software Development with Siddhant Pardeshi - #763

In this episode, Sid Pardeshi, co-founder and CTO of Blitzy, joins us to discuss building autonomous development systems able to deliver production-ready software at enterprise scale. Sid contrasts AI-assisted coding with end-to-end autonomy, arguing that “code is a commodity” and acceptance is the real metric—security, standards, tests, and maintainability included. We explore Blitzy’s hybrid graph-plus-vector approach, which grounds agents and combines semantic signals with keyword search to navigate large repositories efficiently. Sid breaks down context and agent engineering, how effective context windows have plateaued, and why dynamic agent personas, tool selection, and model-specific prompting matter at scale. He details their orchestration of large swarms of AI agents to collaboratively analyze codebases, plan tasks, and execute complex tasks in parallel. We also dig into why Agents.md and flat memories break down, storing feedback in the knowledge graph, and building real-world evals beyond leaderboards to choose the right model for each task. The complete show notes for this episode can be found at https://twimlai.com/go/763.

Carnegie Council AI 2026-03-10 17:30 UTC Score 24.0 USR-0160-20260310-ai-specialis-c5fcd987 Full article

Ethics on Film: Discussion of "One Battle After Another"

This review of Paul Thomas Anderson's Oscar-winning "One Battle After Another" discusses gender roles, white supremacy, and the motivations of revolutionaries.

10 years of AlphaGo: The turning point for AI | Thore Graepel & Pushmeet Kohli
Google DeepMind YouTube 2026-03-10 17:28 UTC Score 25.0 AI-145-20260310-podcasts-and-695e21da Full article

10 years of AlphaGo: The turning point for AI | Thore Graepel & Pushmeet Kohli

Seoul, March 2016. Two players sit hunched over a 19x19 grid covered in a sea of black and white stones. They are playing the ancient game of Go - a game of unimaginable complexity long thought impossible for a machine to master. On one side is Lee Sedol (Sae Dol), a legendary 18-time Go world champion. On the other, AlphaGo, a neural network based AI system built on a powerful technique called reinforcement learning. In the blink of an eye, the world changed. Exactly one decade later, we look back at the match that sparked the modern AI revolution. From algorithmic discovery to the solving of scientific grand challenges like protein folding, the foundation was laid right there on that wooden board. Join Hannah Fry, Pushmeet Kohli (VP, Science) and Thore Graepel (AlphaGo team & Distinguished Research Scientist) as they unpick the legacy of AlphaGo. Further watching: 🎥AlphaGo https://youtu.be/WXuK6gekU1Y 🎥The Thinking Game: https://youtu.be/d95J8yzvjbQ ___ Subscribe to our channel https://www.youtube.com/@googledeepmind Find us on X https://twitter.com/GoogleDeepMind Follow us on Instagram https://instagram.com/googledeepmind Add us on Linkedin https://www.linkedin.com/company/deepmind/

METR 2026-03-10 07:00 UTC Score 49.0 USR-0147-20260310-research-aca-510ce207 Full article

Many SWE-bench-Passing PRs Would Not Be Merged into Main

Summary: We find that roughly half of test-passing SWE-bench Verified PRs written by mid-2024 to mid/late-2025 agents would not be merged into main by repo maintainers, even after adjusting for noise in maintainer merge decisions. Since the agents are not given a chance to iterate on their solution in response to feedback the way a human developer would, we do not claim that this represents a fundamental capability limitation. Rather, our results indicate that a naive interpretation of benchmark scores may lead one to overestimate how useful agents are without more elicitation or human feedback. Introduction It is often unclear how to translate benchmark scores into real-world usefulness. For example, if a model’s SWE-bench Verified score is 60%, does that mean it can resolve 60% of real-world open-source issues? One reason to doubt this is that benchmarks are clean and verifiable in ways the real world is not. To study this quantitatively, we take SWE-bench Verified and zoom in on one such difference — it uses an automated grader rather than the real-world standard of maintainer review. To study how agent success on benchmark tasks relates to real-world usefulness, we had 4 active maintainers from 3 SWE-bench Verified repositories review 296 AI-generated pull requests (PRs). We had maintainers (hypothetically) accept or request changes for patches as well as provide the core reason they were requesting changes: core functionality failure, patch breaks other code or code qua…

Practical AI Podcast 2026-03-09 13:27 UTC Score 31.0 AI-143-20260309-podcasts-and-cd457338 Full article

AI policy and the battle for computing power

AI is reshaping global power, from chip manufacturing and computing power to AI governance and US-China relations. In this episode, Ben Buchanan, Assistant Professor at The Johns Hopkins University and former White House Special Advisor for AI, explores how AI policy, geopolitics, and international cooperation intersect with AI innovation and AI safety. We discuss the strategic importance of computing power, the future of AI governance, and what it will take for democracies to lead responsibly in the age of AI. Featuring: Ben Buchanan – LinkedIn Chris Benson – Website , LinkedIn , Bluesky , GitHub , X Links: The AI Grand Bargain Upcoming Events: Register for upcoming webinars here !

Consultancy.lat AI & GenAI 2026-03-09 11:21 UTC Score 15.0 AI-177-20260309-regional-ai--f480a8a7

SLR acquires Chilean environmental consulting firm Geobiota

SLR, a global sustainability consultancy, has acquired Geobiota, a 200-person Chilean environmental consulting firm specializing in the mining and energy sectors. Founded in 1995, Geobiota provides consulting services and solutions in environmental engineering and natural resources.

I BUILT A FULLY AUTOMATIC MANSPLAINER
Yannic Kilcher 2026-03-06 22:07 UTC Score 17.0 AI-140-20260306-podcasts-and-3ba304b2 Full article

I BUILT A FULLY AUTOMATIC MANSPLAINER

All information about GTC and the DGX Spark Raffle is here: https://www.ykilcher.com/gtc Links: Homepage: https://ykilcher.com Merch: https://ykilcher.com/merch YouTube: https://www.youtube.com/c/yannickilcher Twitter: https://twitter.com/ykilcher Discord: https://ykilcher.com/discord LinkedIn: https://www.linkedin.com/in/ykilcher If you want to support me, the best thing to do is to share out the content :) If you want to support me financially (completely optional and voluntary, but a lot of people have asked for this): SubscribeStar: https://www.subscribestar.com/yannickilcher Patreon: https://www.patreon.com/yannickilcher Bitcoin (BTC): bc1q49lsw3q325tr58ygf8sudx2dqfguclvngvy2cq Ethereum (ETH): 0x7ad3513E3B8f66799f507Aa7874b1B0eBC7F85e2 Litecoin (LTC): LQW2TRyKYetVC8WjFkhpPhtpbDM4Vw7r9m Monero (XMR): 4ACL8AGrEo5hAir8A9CeVrW8pEauWvnp1WnSDZxW7tziCDLhZAGsgzhRQABDnFy8yuM9fWJDviJPHKRjV4FWt19CJZN9D4n

Future of Life Institute AI 2026-03-04 22:12 UTC Score 27.0 USR-0145-20260304-ai-specialis-1d70063d Full article

“This is What it Means to be Pro-Human” Declares Broad Coalition of Conservative, Progressive, and Civil Society Groups in Statement of Shared Principles on AI

Amid a rising backlash to Silicon Valley overreach, a remarkably diverse group from across the political spectrum announced a set of AI principles to clearly define the goals of the emerging pro-human movement.

AI Expo Africa 2026-03-04 07:06 UTC Score 20.0 USR-0194-20260304-regional-new-196b17e1 Full article

South African AI Association Enters 4th Year After Busy 2025

JOHANNESBURG, SOUTH AFRICA 3rd March – South African AI Association (SAAIA) SAAIA operated on a funded basis for the second time from 1st March 2025 to 28th February 2026. This was achieved via the amazing sponsorship from Google, Huawei and other vendors who contributed to the years funding tranche for which we are very grateful. […]

OpenMined Blog 2026-03-03 19:33 UTC Score 27.0 USR-0156-20260303-ai-specialis-c7e84c6b Full article

Two Years In: OpenMined Deep Partnerships under the NAIRR

This month, OpenMined is heading back to Arlington, VA, for the NAIRR’s second annual meeting. A lot has changed since last year’s inaugural gathering. The program is transitioning from a proof-of-concept to permanent national infrastructure, NSF has put $35 million on the table to establish a permanent operations center, and OpenMined just received approval to […] The post Two Years In: OpenMined Deep Partnerships under the NAIRR appeared first on OpenMined .

The Dangerous Illusion of AI Coding? - Jeremy Howard
Machine Learning Street Talk 2026-03-03 14:50 UTC Score 62.0 AI-141-20260303-podcasts-and-aa1fcba5 Full article

The Dangerous Illusion of AI Coding? - Jeremy Howard

Dive into the realities of AI-assisted coding, the origins of modern fine-tuning, and the cognitive science behind machine learning with fast.ai founder Jeremy Howard. In this episode, we unpack why AI might be turning software engineering into a slot machine and how to maintain true technical intuition in the age of large language models. GTC is coming, the premier AI conference, great opportunity to learn about AI. NVIDIA and partners will showcase breakthroughs in physical AI, AI factories, agentic AI, and inference, exploring the next wave of AI innovation for developers and researchers. Register for virtual GTC for free, using my link and win NVIDIA DGX Spark (https://nvda.ws/4qQ0LMg) Jeremy Howard is a renowned data scientist, researcher, entrepreneur, and educator. As the co-founder of fast.ai, former President of Kaggle, and the creator of ULMFiT, Jeremy has spent decades democratizing deep learning. His pioneering work laid the foundation for modern transfer learning and the pre-training and fine-tuning paradigm that powers today's language models. Key Topics and Main Insights Discussed: - The Origins of ULMFiT and Fine-Tuning - The Vibe Coding Illusion and Software Engineering - Cognitive Science, Friction, and Learning - The Future of Developers RESCRIPT: https://app.rescript.info/public/share/BhX5zP3b0m63srLOQDKBTFTooSzEMh_ARwmDG_h_izk https://app.rescript.info/api/public/sessions/62d06c0336c567d6/pdf Jeremy Howard: https://x.com/jeremyphoward https://www.answer.…

METR 2026-03-03 08:00 UTC Score 38.0 USR-0147-20260303-research-aca-7bd4bcdb Full article

Observations from two CLI game reimplementation runs with Opus 4.6

Summary: Opus 4.6 can, with a simple agent scaffold, create mostly-playable but somewhat broken CLI versions of Slay the Spire and Balatro 1 . Intro Last weekend I was trying to think of really difficult tasks we could give to AI agents to upper-bound their capabilities. I thought of two examples: Recreating a basic version of the video game Slay the Spire in the CLI Recreating a basic version of the video game Balatro in the CLI Both of these video games have a few properties that make it especially easy for AI systems to implement them: They already exist, so the AI doesn’t have to come up with new game ideas and do the enormous amount of work necessary to make it a fun game to play. Most player-relevant information is conveyed through text. They have well-defined rules and interactions between game mechanics. They are turn-based and don’t rely on reaction times or on-screen movement at all. They have well-documented wikis and appear on the internet a lot. Nevertheless, I expected that AI systems are currently far from being able to pull these tasks off. My best guess is that it would take an experienced software engineer a few months to do these tasks. To test my hypothesis, I created simple versions of these tasks where only the core game mechanics need to be present. Also, instead of creating a full video game with graphics and animations, I only requested that the game be playable in a terminal. This significantly lowers the difficulty of the task. I tasked Opus 4.6 wi…

OpenMined Blog 2026-03-03 00:30 UTC Score 30.0 USR-0156-20260303-ai-specialis-5e90423e Full article

Why Blocking, Licensing & Pay-to-Access Are Insufficient

TL;DR: The three dominant responses to this problem – blocking scrapers, licensing content, charging for scraper access – share the same flaw: once content is copied to a model server, control and attribution are lost. Each treats distribution and control as mutually exclusive. They are not. A different architecture exists, one in which publishers retain […] The post Why Blocking, Licensing & Pay-to-Access Are Insufficient appeared first on OpenMined .

Weaviate Blog 2026-03-03 00:00 UTC Score 30.0 USR-0073-20260303-ai-specialis-5b76ad39 Full article

Weaviate 1.36 Release

This release introduces HFresh vector index (Preview), and brings Server-side Batching, Object TTL, Async Replication Improvements, Drop Inverted Indices, and Backup Restoration Cancellation to general availability.

OpenMined Blog 2026-03-02 20:30 UTC Score 32.0 USR-0156-20260302-ai-specialis-5d9542bc Full article

Reflections on the 2026 India AI Impact Summit

OpenMined participated in the 2026 India AI Impact Summit in New Delhi, demonstrating BioVault for privacy-preserving genomics research and contributing to policy discussions on data sovereignty, conditional openness, and the "Visit, Don't Move" paradigm for cross-border AI collaboration. The post Reflections on the 2026 India AI Impact Summit appeared first on OpenMined .

Amoral American Power, with Professor Matias Spektor
Carnegie Council AI 2026-03-02 15:30 UTC Score 24.0 USR-0160-20260302-ai-specialis-0de8e9b3 Full article

Amoral American Power, with Professor Matias Spektor

From Caracas to Tehran, U.S. power is no longer justified through a narrative of liberal internationalism. Matias Spektor examines the consequences of this shift.

Lex Fridman Podcast 2026-03-01 04:33 UTC Score 17.0 AI-137-20260301-podcasts-and-d13d94a5 Full article

#492 – Rick Beato: Greatest Guitarists of All Time, History & Future of Music

Rick Beato is a music educator, interviewer, producer, songwriter, and a true multi-instrument musician, playing guitar, bass, cello & piano. His incredible YouTube channel celebrates great musicians & musical ideas, and helps millions of people fall in love with great music all over again. Thank you for listening ❤ Check out our sponsors: https://lexfridman.com/sponsors/ep492-sc See below for timestamps, transcript, and to give feedback, submit questions, contact Lex, etc. Transcript: https://lexfridman.com/rick-beato-transcript CONTACT LEX: Feedback – give feedback to Lex: https://lexfridman.com/survey AMA – submit questions, videos or call-in: https://lexfridman.com/ama Hiring – join our team: https://lexfridman.com/hiring Other – other ways to get in

Lex Fridman Podcast 2026-03-01 03:32 UTC Score 17.0 AI-137-20260301-podcasts-and-9757b476 Full article

Transcript for Rick Beato: Greatest Guitarists of All Time, History & Future of Music | Lex Fridman Podcast #492

This is a transcript of Lex Fridman Podcast #492 with Rick Beato. The timestamps in the transcript are clickable links that take you directly to that point in the main video. Please note that the transcript is human generated, and may have errors. Here are some useful links: Go back to this episode’s main page Watch the full YouTube version of the podcast Table of Contents Here are the loose “chapters” in the conversation. Click link to jump approximately to that part in the transcript: 0:00 – Introduction 0:44 – Guitar solos 4:43 – Gypsy jazz and Django Reinhardt 6:14

MongoDB AI Blog 2026-02-27 16:30 UTC Score 29.0 USR-0070-20260227-ai-specialis-8ab3a719 Full article

Inside MongoDB Dublin: The Heart of Our International Growth

Nestled between the Irish Sea and the Wicklow Mountains, MongoDB’s Dublin office brings together people from around the world. It’s a place where you can build a meaningful career, contribute to leading global products, and feel part of a close-knit community. Located in Ballsbridge just south of Dublin city center, the office is a short walk from the Lansdowne DART station and is well-served by multiple bus routes, making it easy to plug into everything the city has to offer. Image of a wall in the MongoDB Dublin office that is painted with Dublin relevant illustrations and text that says "Build together" and "Make it matter" As MongoDB’s international headquarters, Dublin is a key hub where over 300 employees from more than 40 nationalities own critical parts of the company’s products and support customers running mission-critical systems across the globe. Established in 2012, MongoDB Dublin has long played a pivotal role in helping the company achieve its mission of empowering innovators to create, transform, and disrupt industries by unleashing the power of software and data. In this spotlight, you’ll hear from people across MongoDB’s Product & Technology, Sales, and Technical Services teams about what it’s like to build your career—and your life—in Dublin with MongoDB. Image of CEO, CJ Desai, speaking in front of a group of employees in the Dublin office. CEO CJ Desai holds an “Ask Me Anything” session in a recent visit to Dublin. Life at MongoDB Dublin The MongoDB Dubl…

MongoDB AI Blog 2026-02-27 15:30 UTC Score 37.0 USR-0070-20260227-ai-specialis-2ad5a66f Full article

Towards Model-based Verification of a Key-Value Storage Engine

In our previous post, we talked about our process of specifying MongoDB’s distributed transactions protocol and how it enabled novel analysis of its performance characteristics. In this follow-up, we talk about how the modularity of our specification also enabled us to check that the underlying storage engine implementation actually conforms to the abstract behavior defined in our formal specification. That is, we are able to formalize the interface boundary between the sharded transaction protocol and WiredTiger, the underlying key-value storage engine, and develop an automated way to generate tests for checking conformance between the semantics of the underlying storage engine layer and this abstract model. As mentioned in the previous post, a deeper exploration of the concepts covered in this post is covered in our recently published VLDB ’25 paper, Design and Modular Verification of Distributed Transactions in MongoDB. Modular, Model-Based Verification As discussed in Part 1, we had developed a TLA+ specification of MongoDB’s distributed transactions protocol in a compositional manner, describing the high level protocol behavior while also formalizing the boundary between the distributed aspect of the transactions protocol and the underlying single-node WiredTiger storage engine component. As mentioned, the distributed transactions protocol can be viewed as running atop the lower level storage layer. When considering the correctness guarantees of the distributed transact…