
Official account for DeepSpeed, a library that enables unprecedented scale and speed for deep learning training + inference. 日本語 : @DeepSpeedAI_JP
Joined May 2020
- Tweets122
- Following93
- Followers4.2K
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DeepSpeed retweeted
The PyTorch Foundation continues to grow as a multi-project home dedicated to supporting collaboration across every stage of the AI lifecycle.
We are excited to launch a new quarterly blog series where each hosted project - PyTorch, @vllm_project @DeepSpeedAI @raydistributed, Helion and Safetensors - shares its latest updates, technical progress, and roadmap. From core framework optimizations and hardware enablement to overall ecosystem health, our hosted projects achieved a lot over the past quarter.
Read the complete update to learn more 👉 bit.ly/4fkiTJy..*
DeepSpeed retweeted
PSA for @DeepSpeedAI users - a long outstanding precision-related critical bug has been identified and fixed in github.com/deepspeedai/DeepS… and a new release has been made.
The issue was about mixed precision mode downcasting buffers that had to be in fp32 - massively impacting correctness due to large static buffers - e.g. RoPE in Qwen3 models when using long sequence lengths 32K+.
Hopefully this fix brings Deepspeed to a close parity with FSDP2 which has been an issue since a long time.
You can still have the old behavior but you'd now need to manually configure it - by default the model's buffers will now remain in the original precision.
Please install deepspeed==0.19.2 which will do the right thing.
Thanks to Tunji Ruwase and Claude Opus 4.8 via Cursor for identifying and fixing the problem.
DeepSpeed retweeted
Don't miss @DeepSpeedAI virtual office hours on May 26 at 12:00 PM America/New_York to ask questions of @toh_tana member of DeepSpeed TSC & get the latest recent key updates, including AutoSP (sequence parallel), AutoEP (expert parallel), and AutoTP (tensor parallel).
DeepSpeed retweeted
Excited to share that our work SuperOffload received an Honorable Mention for the ASPLOS 2026 Best Paper Award 🎉
Proud of the team for pushing forward system design for large-scale AI. Xinyu gave a great talk presenting the work. In addition, it was also wonderful to spend time with collaborators and the broader community.
DeepSpeed retweeted
💡Excited to be organizing a tutorial at ASPLOS 2026 (lnkd.in/g5auexxg): "Building Efficient Large-Scale Model Systems with DeepSpeed: From Open-Source Foundations to Emerging Research"
🌀 Link: lnkd.in/gixRnAm6
📍 Room: Allegheny
🕘 Time: Monday (Mar 23), 8:30am-12pm
🎤 Speaker: Tunji Ruwase, Masahiro Tanaka, Minjia Zhang, Zhipeng Wang, PhD
We will cover how @DeepSpeedAI enables new forms of parallel, distributed, and heterogeneous execution, and how modern systems tackle key challenges in parallelism, offloading, and memory efficiency.
If you are working on ML systems, LLM training, or emerging hardware, would love to connect at ASPLOS!
DeepSpeed retweeted
🗓️ Plan your week: Check out the full "Meet the PyTorch Experts" schedule here: pytorch.org/event/nvidia-gtc…
We'll be posting the daily lineups here in this thread all week. See you at the booth! 🤝 @NVIDIADev
DeepSpeed retweeted
I am thrilled to release our newly re-architected extremely-scale Linear Programming Solver (DuaLip-GPU), which is developed via PyTorch enabling multi-GPU computations and parallelism (github.com/linkedin/DuaLip). We also released the technical report (arxiv.org/abs/2603.04621) covering all technical details.
Linear Programming Solver is a fundamental building block for solving extreme-scale matching problems, which underline many important technical domains related to social network platforms such as ranking, personalization, item-matching and recommendation systems, as well as in LLMs.
To realize the available parallelism, we develop GPU execution techniques tailored to sparse matching constraints, including constraint-aligned sparse layouts, batched projection kernels, and a distributed design that communicates only dual variables. Further, we improve the underlying ridge-regularized dual ascent method with Jacobi-style row normalization, primal scaling, and a continuation scheme for the regularization parameter.
On extreme-scale matching workloads, the GPU implementation achieves at least a 10x wall-clock speedup over the prior distributed CPU DuaLip solver under matched stopping criteria, while maintaining convergence guarantees. This is the superb technical work combining ML Systems, Mathematical Optimization and Machine Learning. #Optimization #AI
DeepSpeed retweeted
PSA: if you use torch>=2.10 w/ deepspeed ZeRO-3 please update to deepspeed@master - a new release should happen shortly.
If you use torch<2.10 or ZeRO-1/2 nothing needs to be done.
See this fix from Michael Royzen github.com/deepspeedai/DeepS…
Cause: PyTorch made some grad reduction stream-related changes which could lead to borked grad reduction in Deepspeed ZeRO-3.
DeepSpeed retweeted
Good news! Ulysses Sequence Parallelism from the Snowflake AI Research and the Deepspeed teams has been integrated into @huggingface Trainer, Accelerate and TRL
For extensive details please see this writeup:
huggingface.co/blog/ulysses-…
Thanks a lot to @krasul for helping make it happen. Also the others in the HF team who helped with integration.
DeepSpeed retweeted
Deepspeed ZeRO 1+2 used to take forever to load huge models on multi-gpu as tensor flattening was happening on cpu due to the small gpu size back when it was designed.
Now things load super fast thanks to a rework by Kento Sugama to flatten on gpu. Yay!
github.com/deepspeedai/DeepS…
DeepSpeed retweeted

PyTorch@PyTorch12 Dec 2025
United States
United StatesConnected via WebAccount-level information, not a live location or per-post device.
Zhipeng (Jason) Wang, PhD (@PKUWZP) explains how @DeepSpeedAI supports ML training research and why joining PyTorch Foundation benefits researchers and developers working on AI training workloads.
🔗youtu.be/67719mlOSp0 #PyTorch
#DeepSpeed #OpenSourceAI #AIInfrastructure
DeepSpeed retweeted
🚨Meetup Alert🚨
Join us for @raydistributed × @DeepSpeedAI Meetup: AI at Scale, including talks from researchers and engineers at @LinkedIn, @anyscalecompute and @Snowflake.
Learn how leading AI teams are scaling efficiently with Ray’s distributed framework and DeepSpeed’s model-training optimizations.
Agenda includes:
• Networking & welcome
• Tech talks: DeepSpeed overview, SuperOffload, Arctic Long Sequence Training, Muon optimizer, DeepCompile, and Ray in Snowflake ML
• Q&A + networking
📍In-person at Anyscale HQ, San Francisco
Seats are limited — register now: luma.com/3wctqteh
DeepSpeed retweeted
The @DeepSpeedAI would like to thank @modal for sponsoring our gpus for CI. This is an amazing contribution to our AI-democratizing open source project.
github.com/deepspeedai/DeepS…
The Modal team is outstanding in their amazing support - speed, expertise and a human experience!
DeepSpeed retweeted
My first project at @Snowflake AI Research is complete!
I present to you Arctic Long Sequence Training (ALST)
Paper: arxiv.org/abs/2506.13996
Blog: snowflake.com/en/engineering…
ALST is a set of modular, open-source techniques that enable training on sequences up to 15 million tokens on 4 H100 nodes, all using Hugging Face Transformers and DeepSpeed, with no custom modeling code required. ALST makes long-sequence training fast, efficient, and accessible on GPU nodes or even single GPUs.
DeepSpeed retweeted

PyTorch@PyTorch7 May 2025
United States
United StatesConnected via WebAccount-level information, not a live location or per-post device.
PyTorch Foundation has expanded into an umbrella foundation. @vllm_project and @DeepSpeedAI have been accepted as hosted projects, advancing community-driven AI across the full lifecycle.
Supporting quotes provided by the following members: @AMD, @Arm, @AWS, @Google, @Huawei, @huggingface, @IBM, @Intel, @LightningAI, @Meta, @NVIDIA, and @Snowflake.
🔗💡 Read the full announcement: hubs.la/Q03lmJNH0
#PyTorchFoundation #PyTorch #OpenSourceAI #vLLM #DeepSpeed
DeepSpeed retweeted
1/4⚡️nanoton now supports DoMiNo with intra-layer communication overlapping, achieving 60% communication hiding for tensor parallelism (TP) in both the forward and backward passes while maintaining the same training loss.
DeepSpeed retweeted
🚀 Excited to introduce DeepSpeed, a deep learning optimization library from @Microsoft! It simplifies distributed training and inference, making AI scaling more efficient and cost-effective.
Learn more 👉 hubs.la/Q0351DJC0
#DeepSpeed #AI #OpenSource #LFAIData
DeepSpeed retweeted

Comet@Cometml7 Aug 2024
United States
United StatesConnected via WebAccount-level information, not a live location or per-post device.
💡Check out Comet’s latest integration with DeepSpeed, a deep learning optimization library!
🤝With the @MSFTDeepSpeed + @Cometml integration automatically start logging training metrics generated by DeepSpeed.
Try the quick-start Colab to get started:
colab.research.google.com/gi…
DeepSpeed retweeted
So you've had your fun with @karpathy 's mingpt. Now its time to scale : introducing min-max-gpt: really small codebase that scales with help of @MSFTDeepSpeed . No huggingface accelerate, transformer. Just deepspeed + torch: maximum hackability
github.com/cloneofsimo/min-m…
DeepSpeed retweeted
Hear, hear, AMD MI300Xs have started to emerge much sooner than expected.
Here is a 2-part benchmarks report on performing BLOOM-176B inference using @MSFTDeepSpeed optimized for AMD MI300X.
1. evp.cloud/post/diving-deeper…
2. evp.cloud/post/diving-deeper…
This was published in response to our BLOOM-176B super-fast inference blog post huggingface.co/blog/bloom-in…
Note that these have 192GB of HBM!
The NVIDIA monopoly is strong, but it'll have to start sharing the pie and hopefully drive the costs down at least somewhat.
Thanks to linkedin.com/in/eliovp for sharing this writeup with me.
p.s. at the PyTorch conference in the fall, the AMD representative said we will see MI300X available to us mortals in Q4-2024/Q1-2025.

















