Marco Rossignoli's Avatar

Marco Rossignoli

@marcorossignoli.bsky.social

Principal Software Engineer@Microsoft CoreAI Platform and Tools - DevDiv, Agentic/Generative AI, .NET, Microsoft.Testing.Platform creator, Coverlet coverage co-maintainer

247 Followers  |  132 Following  |  8 Posts  |  Joined: 21.10.2024  |  1.9697

Latest posts by marcorossignoli.bsky.social on Bluesky

Multi-Head Latent Attention
πŸ”— github.com/rasbt/LLMs-f...

12.10.2025 13:57 β€” πŸ‘ 43    πŸ” 6    πŸ’¬ 0    πŸ“Œ 1

What a dream

04.10.2025 10:27 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

"If it takes longer to make your coffee than it does for you build pipeline to complete, you're doing one of them wrong"

- @abangser.bsky.social

04.10.2025 09:17 β€” πŸ‘ 27    πŸ” 8    πŸ’¬ 4    πŸ“Œ 0
Preview
Defeating Nondeterminism in LLM Inference Reproducibility is a bedrock of scientific progress. However, it’s remarkably difficult to get reproducible results out of large language models. For example, you might observe that asking ChatGPT the...

Fantastic technical post about experiments in making LLMs deterministic by making kernel operations act invariant of batch sizes: thinkingmachines.ai/blog/defeati...

Curious if we'll see something like this roll out more broadly in the future!

13.09.2025 04:02 β€” πŸ‘ 10    πŸ” 2    πŸ’¬ 0    πŸ“Œ 2
Preview
Performance Improvements in .NET 10 - .NET Blog Take a tour through hundreds of performance improvements in .NET 10.

devblogs.microsoft.com/dotnet/perfo...

11.09.2025 21:26 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
dir 1.txt.* matches 1.txt

dir 1.txt.* matches 1.txt

I just learned that Directory.GetFiles with pattern 1.txt.* matches 1.txt, and it's the OS behavior:

05.09.2025 18:07 β€” πŸ‘ 17    πŸ” 2    πŸ’¬ 7    πŸ“Œ 0
Screenshot of running a file-based C# app from stdin to dotnet run -

Screenshot of running a file-based C# app from stdin to dotnet run -

File-based C# apps & support for stdin to `dotnet run -` makes it incredibly easy to check behavior of APIs in .NET 10!

04.09.2025 17:24 β€” πŸ‘ 31    πŸ” 9    πŸ’¬ 4    πŸ“Œ 0
Post image

Not entirely sure what I'm going to do with all that money.

03.09.2025 10:02 β€” πŸ‘ 2    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
Captain Haddock looking very frazzled, saying, β€œWhat a week, huh?”
Tintin leans into the frame and says, β€œCaptain, it’s Wednesday.”
Snowy is very excited about the drink he has found.

Captain Haddock looking very frazzled, saying, β€œWhat a week, huh?” Tintin leans into the frame and says, β€œCaptain, it’s Wednesday.” Snowy is very excited about the drink he has found.

03.09.2025 09:55 β€” πŸ‘ 487    πŸ” 208    πŸ’¬ 3    πŸ“Œ 11
The SCUMM Bar screenshot of the day

The SCUMM Bar screenshot of the day

Daily scene from β€œMonkey Island 2: LeChuck’s Revenge” (VGA): Part II β€” Four Map Pieces #MonkeyIsland

26.08.2025 08:00 β€” πŸ‘ 7    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
Preview
GitHub - MorDavid/BruteForceAI: Advanced LLM-powered brute-force tool combining AI intelligence with automated login attacks Advanced LLM-powered brute-force tool combining AI intelligence with automated login attacks - MorDavid/BruteForceAI

Finally a good use for LLMs

github.com/MorDavid/Bru...

26.08.2025 18:53 β€” πŸ‘ 5    πŸ” 3    πŸ’¬ 0    πŸ“Œ 0
Preview
Enhance your CLI testing workflow with the new dotnet test - .NET Blog Learn how .NET 10 transforms dotnet test with native Microsoft.Testing.Platform integration, delivering better performance and enhanced diagnostics.

devblogs.microsoft.com/dotnet/dotne...

22.08.2025 12:52 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Preview
Improving Codebase Awareness in Visual Studio Chat - Visual Studio Blog Our new Remote Semantic Search integration helps you find exactly what you need faster and with greater precision than ever before.

Semantic code search is now built into Visual Studio Copilot Chat, making it easier to find code based on meaning.
devblogs.microsoft.com/visualstudio... #visualstudio

14.08.2025 13:54 β€” πŸ‘ 0    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
spot art.
Photo of presenter(s).
text reads: MCP security best practices

spot art. Photo of presenter(s). text reads: MCP security best practices

If you're building AI tools in #VisualStudio, adopting MCP can help you scale fastβ€”but it also introduces a new class of threats you might not expect.

Get actionable strategies and tooling tips to keep AI systems secure, resilient, & enterprise-ready.
πŸŽ₯ msft.it/63327s3QfX

14.08.2025 14:30 β€” πŸ‘ 3    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
πŸ”΄ VS Code - VS Code Live - v1.103 Release πŸŽ‰
πŸŽ‰ It's time for another release party! Join the VS Code team as they dive into the latest features from the v1.103 release, including: Coding agent integration MCP updates Terminal tools… πŸ”΄ VS Code - VS Code Live - v1.103 Release πŸŽ‰

βŒ› We're live in 10 minutes! It's another VS Code Release Party. Today the team will demo new features and updates from the v1.103 release including coding agent integration, MCP updates, beast mode, evaluating GPT-5! Join us ▢️ www.youtube.com/watch?v=EYMi...

14.08.2025 14:50 β€” πŸ‘ 5    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
Image described in post

Image described in post

Scene of the Day: β€œThimbleweed Park” (PC): Part Three β€” The Arrest

12.08.2025 08:00 β€” πŸ‘ 8    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
Post image

We've made some "beastly" upgrades to our GPT agent prompt and we're seeing big improvements in completion rates across scenarios.

You can use it today in Insiders with any GPT model...

"github.copilot.chat.alternateGptPrompt.enabled": true,
"chat.todoListTool.enabled": true

12.08.2025 17:38 β€” πŸ‘ 19    πŸ” 1    πŸ’¬ 1    πŸ“Œ 1
Preview
GPT-5 Now Available in Visual Studio - Visual Studio Blog We’re excited to share that GPT-5, OpenAI’s latest frontier model, is now rolling out in GitHub Copilot for Visual Studio.GPT-5 offers faster responses and even better performance for writing and unde...

GPT-5 in Visual Studio is now available. #visualstudio devblogs.microsoft.com/visualstudio...

12.08.2025 18:04 β€” πŸ‘ 0    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
Post image

A #csharp 14.0 feature to expect in the next #ILSpy preview for #dotnet 10 is extension members (not final, see github.com/icsharpcode/...)

04.08.2025 17:20 β€” πŸ‘ 6    πŸ” 4    πŸ’¬ 0    πŸ“Œ 1
Preview
Azure Dev Summit | Lisbon 13 - 16 Oct 2025 Azure Dev Summit is a 4-Day Event for Software Developers, 13-16 Oct in Lisbon, Portugal.

Explore the future of cloud at azuredevsummit.com β€” a powerhouse event featuring not just AI, but a full spectrum of cloud innovations, hands-on workshops, and top-tier speakers

Early Bird pricing ends this week!

30.07.2025 07:38 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
The LLVM Compiler Infrastructure - Chris Lattner - 2004/07
YouTube video by WalkingCat The LLVM Compiler Infrastructure - Chris Lattner - 2004/07

The LLVM Compiler Infrastructure - Chris Lattner - 2004/07 www.youtube.com/watch?v=f9I2...

27.07.2025 13:29 β€” πŸ‘ 4    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0

Troubleshooting walkthrough: Cascade Into Darkness

This is a real issue I solved in Windows, the hurdles I faced, and what I'd do differently.

πŸ₯πŸ₯YOU CAN MUTE JUST THIS CONVERSATION THREADπŸ₯πŸ₯

It starts with the user editing "HKLM\HARDWARE" and misunderstanding an instruction and breaking Windows.

24.07.2025 01:57 β€” πŸ‘ 241    πŸ” 39    πŸ’¬ 8    πŸ“Œ 14
Post image

Hey folks! Know anyone looking for a product manager with deep experience working on C#, JavaScript, mobile, web and AI developer tools? I'm on the market and looking for new opportunities! You can read up on my history here: linkedin.com/in/jordanmat...

Feel free to DM me as well.

23.07.2025 20:46 β€” πŸ‘ 7    πŸ” 13    πŸ’¬ 1    πŸ“Œ 0
Preview
Unexpected inconsistency in records Unexpected inconsistency in records The other day, I was trying to figure out a bug in my code, and it turned out to be a misunderstanding on my part as to how C# records work. It’s entirely …

Blogged: Unexpected inconsistency in records - codeblog.jonskeet.uk/2025/07/19/u... - if you use C# records and the "with" operator, I'd suggest reading this to avoid a footgun you may be unaware of

19.07.2025 13:08 β€” πŸ‘ 57    πŸ” 13    πŸ’¬ 5    πŸ“Œ 2
Preview
four new versions published with no code changes to repo Β· Issue #339 Β· prettier/eslint-config-prettier The diff looks a little odd: https://npmdiff.dev/eslint-config-prettier/10.1.5/10.1.7 Is this expected? https://www.npmjs.com/package/eslint-config-prettier?activeTab=versions

Looks like eslint-plugin-prettier and eslint-config-prettier might have been compromised 😬 github.com/prettier/esl...

18.07.2025 18:02 β€” πŸ‘ 16    πŸ” 11    πŸ’¬ 7    πŸ“Œ 1
Tech Promised Everything. Did it deliver? | Scott Hanselman | TEDxPortland
YouTube video by TEDx Talks Tech Promised Everything. Did it deliver? | Scott Hanselman | TEDxPortland

I just wanted to say, I’m probably more proud of this Ted talk than just about anything I’ve ever done so I’m gonna be absolutely useless for the next couple of weeks as I promote the shit out of this because I want you to watch it because it matters in the moment we are in youtu.be/dVG8W-0p6vg

17.07.2025 20:37 β€” πŸ‘ 993    πŸ” 275    πŸ’¬ 80    πŸ“Œ 93
Video thumbnail

Next version of the dotnet runfile supports publishing these .cs files to a native binary (via Native AOT learn.microsoft.com/en-us/dotnet...), no dependencies on the runtime, self-contained.

#dotnet #csharp

22.06.2025 02:34 β€” πŸ‘ 64    πŸ” 6    πŸ’¬ 5    πŸ“Œ 0
many rows of multiple rectangles per row, each rectangle is the project name, some rectangles are bigger and bluer (they are referenced more). One rectangle is selected and green, it has outgoing arrows above it that point to other rectangles, with purple border. Those are the referenced projects. Arrows also go down, to rectangles with green borders. Those are projects that reference the selected one.

many rows of multiple rectangles per row, each rectangle is the project name, some rectangles are bigger and bluer (they are referenced more). One rectangle is selected and green, it has outgoing arrows above it that point to other rectangles, with purple border. Those are the referenced projects. Arrows also go down, to rectangles with green borders. Those are projects that reference the selected one.

New in MSBuild Structured Log Viewer:

Project Reference Graph

New tab that shows the project graph layered by project "height". Each project only references projects above it.

Clicking a project highlights all directly referenced projects above, and all projects below it that reference this one.

21.06.2025 02:33 β€” πŸ‘ 33    πŸ” 8    πŸ’¬ 1    πŸ“Œ 1
Post image

Speaking of "supporting actor" - #ILSpy in @david.wengier.com talk "What's Inside: A .NET assembly! (and how does Hot Reload change it?)" www.youtube.com/watch?v=Buxm...

11.06.2025 13:38 β€” πŸ‘ 11    πŸ” 4    πŸ’¬ 0    πŸ“Œ 0
Post image

Hey #dotnet people:)
Just published another episode on Dissecting the Code YouTube channel - "Can Tiered Compilation Cause Memory Leaks in .NET".

This video is about a change in behavior between full framework on .net 9 in respect to GCInfo and how it affect memory usage.

06.06.2025 21:13 β€” πŸ‘ 7    πŸ” 3    πŸ’¬ 1    πŸ“Œ 0

@marcorossignoli is following 20 prominent accounts