Blosc Development Team
blosc.org
Blosc Development Team
@blosc.org
Announcements about Blosc2 developments
https://blosc.org
Reposted by Blosc Development Team
Stop downloading. Start computing.

Everything changes on November 18, 2025.

#Cat2Cloud is coming.
November 12, 2025 at 9:13 AM
Our Blosc2 tutorial for @euroscipy.bsky.social 2025 is up! Learn how compression boosts tensor data handling, sharing & computing.

www.youtube.com/watch?v=BdpT... #DataScience #BigData #HPC #OpenSource
18.08.2025 Compress, Compute, and Conquer: Python-Blosc2 for Efficient Data Analysis
YouTube video by EuroSciPy
www.youtube.com
November 7, 2025 at 11:38 AM
Reposted by Blosc Development Team
📢🚨Blosc2 3.11.0 Released! 🚨 📢

Blosc2 is part of the NumPy array library ecosystem: numpy.org

In v3.11, Blosc2 has become even more flexible; all functions can accept basically any array object:

𝚋𝚕𝚘𝚜𝚌𝟸.𝚖𝚊𝚝𝚖𝚞𝚕(𝙰, 𝙱)

for 𝙰, 𝙱 PyTorch, Jax, Tensorflow, Zarr... arrays!

#Compute
#Tensor
#PyTorch
November 3, 2025 at 8:30 AM
Reposted by Blosc Development Team
💊IronPill 2💊
See how Blosc2 powers heavy-duty linear algebra (100GB!) workflows
⚡1.5-2x faster than PyTorch + h5py!
🧱 optimised chunking for your cache hierarchy
🐍 one line syntax 𝚋𝚕𝚘𝚜𝚌𝟸.𝚖𝚊𝚝𝚖𝚞𝚕(𝙰, 𝙱, 𝚞𝚛𝚕𝚙𝚊𝚝𝚑='𝚘𝚞𝚝.𝚋𝟸𝚗𝚍')

See blog here: ironarray.io/blog/la-blosc

#Blosc2
#Data
#LinearAlgebra
October 28, 2025 at 12:37 PM
🚀 Want to boost performance in your complex calculations? Avoiding temporary arrays is critical!

Check out our new video 🎬 to see how #Blosc2 eliminates these temporaries⚡

Compress Better, Compute Larger
💊 IronPill 1💊
Blosc2 calculates Fourier approximations:
⚡5x faster than NumPy
👣 fraction of the memory footprint
🐍 one-line syntax 𝚜𝚞𝚖(𝚊 * 𝚌𝚘𝚜(𝚝) + 𝚋 * 𝚜𝚒𝚗(𝚝), 𝚊𝚡𝚒𝚜=𝟷)

Full notebook: github.com/Blosc/python...

(inspiration: towardsdatascience.com/numexpr-the-...)

#Blosc2
#Data
#SignalProcessing
October 20, 2025 at 12:14 PM
Reposted by Blosc Development Team
📢Blosc2 3.10.2 Released! 📢

Lazy evaluation for ALL Blosc2 functions in version 3.10!

Blosc2 powers:
- Zarr/HDF5 computations (see image and blosc.org/posts/tensor...)
- Server compuation via Cat2Cloud (demo site here cat2.cloud/demo/)!

#Zarr
#HDF5
#Python
October 15, 2025 at 11:58 AM
There is no data wider than the one offered by the Milky Way! And with the right tools, you can do it all on your laptop.
Inspired by the ESA's Gaia Milky Way map 🌌!

At SciPy 2023, we showcased visualizing a massive 7.3 TB Gaia dataset on a standard laptop by compressing it to 1.8 GB using #Blosc2. Big data analysis for everyone! 🚀

Dataset: digistorage.es/links/652403...
Paper: www.blosc.org/docs/Explori...

#napari
October 10, 2025 at 9:24 AM
This is really exciting news! 😍
🚨Blosc2 3.9.1🚨

Blosc2 as a mature computation engine >>>

• Array API standard compliance - 70 new functions
• Fast linalg: tensordot 12x 𝐅𝐀𝐒𝐓𝐄𝐑 than NumPy for large arrays !
• Fast calc: Funcs like hypot 10x 𝐅𝐀𝐒𝐓𝐄𝐑 than NumPy!

Blog: ironarray.io/blog/array-api

#Python
#linalg
#computation
October 1, 2025 at 9:40 AM
🚀 Boost your Python computations on NumPy arrays with @blosc.jit! Let Blosc2's compute engine accelerate your code without changing containers. ⚡

For ultimate speed, native Blosc2 containers are still king. 🏎️

Code: gist.github.com/FrancescAlte...

#Python #DataScience #NumPy #Performance #Blosc
September 22, 2025 at 12:19 PM
Reposted by Blosc Development Team
🗣️ Announcing Python-Blosc2 3.8.0 🚀

A step closer to compliance with the array-api standard: data-apis.org/array-api!
This is an effort across all array-based libraries so that your code works (e.g. for both blosc2 and NumPy) by simply changing the import statement below!

#arrayapi #Blosc2
September 12, 2025 at 11:12 AM
🗣️ Announcing C-Blosc2 2.21.2

This is a maintenance release, with a few fixes and some optimizations. Thanks to Barak Ugav and Preeyan Parmar.

For more info, see the release notes in:

github.com/Blosc/c-blos...

Compress Better, Compute Bigger
Enjoy!
github.com
September 10, 2025 at 12:16 PM
Reposted by Blosc Development Team
Struggling to get performant code from LLMs? 🤔

We can help! 💪 We've spent countless hours profiling and micro-benchmarking Blosc2 for you. A thing that LLMs cannot do (yet).

Ready to dive in? 🚀
🔹 EuroSciPy Talk: www.blosc.org/docs/2025-Eu...
🔹 Tutorial: github.com/Blosc/EuroSc...

#HPC #Blosc2
September 8, 2025 at 12:11 PM
📣Great to see the community building powerful tools on Blosc2! 🚀

Check out compress-image: a new C++/Python library for working with compressed images directly in memory.

Kudos to Emil Dohne for this fantastic work!

Project here: github.com/EmilDohne/co...

#Blosc2 #FOSS #ImageProcessing
GitHub - EmilDohne/compressed-image: Fast and memory-efficient, compressed in-memory image storage for C++ and Python.
Fast and memory-efficient, compressed in-memory image storage for C++ and Python. - EmilDohne/compressed-image
github.com
September 1, 2025 at 5:32 PM
Reposted by Blosc Development Team
The slides of my talk about _Blosc2: Compress Better, Compute Bigger_ for the recent @euroscipy.bsky.social:
www.blosc.org/docs/2025-Eu...

EuroSciPy 2025 was great! A human sized event with lots of interesting talks and people ready to help you. Thanks to the organizers for such a fantastic event!
August 22, 2025 at 3:53 PM
🚀 We're thrilled to announce *TreeStore*, a new class in Python-Blosc2! Endow your datasets with a hierarchical structure! ⚡️

📝 We've blogged about it:
www.blosc.org/posts/new-tr...

It's in beta, and available in Python-Blosc2 v3.7.2. Enjoy!

#Python #Blosc2 #TreeStore #DataScience #OpenSource
August 20, 2025 at 6:07 AM
Python-Blosc2 comes with an extensively tested partition sizes algorithm for automatically setting the best chunk and block sizes for you.

But you can always bypass this mechanism for more appropriate fine-tuning in different scenarios 🚀

www.blosc.org/python-blosc...

#Compression #Performance
July 29, 2025 at 8:43 AM
🗣️ Announcing Python-Blosc2 3.6.1

¡Unlock new levels of data manipulation with #Blosc2! 🚀
We've tamed the complexity of fancy indexing to make it intuitive, efficient, and consistent with NumPy's behavior.

👉 www.blosc.org/posts/blosc2...

Enjoy

#Python #DataScience #BigData #NumPy #Performance
July 18, 2025 at 9:31 AM
🚀 Blosc2 supports memory-mapped files for super-efficient data access! 🚀

✨ Why memory-mapping?
1️⃣ No system call overhead for each read/write
2️⃣ Data goes straight from page cache to user space—much faster than traditional I/O!

👉 github.com/Blosc/python...

#DataScience #Performance #BigData 🚀💾
July 14, 2025 at 5:18 PM
#Blosc2 now runs directly in your browser! Leveraging the power of #WASM, #Pyodide, and #JupyterLite, you can harness efficient, adaptable compression through the web's universal interface.

Compress Better, Compute Bigger, Share Faster

#WebAssembly #DataCompression #WebDevelopment #DataScience
July 8, 2025 at 10:53 AM
🗣️ Announcing Python-Blosc2 3.5.1 🚀

This introduces significant performance and memory optimizations, enhancing the experience of computing with large, compressed datasets using lazy expressions.

Compress Better, Compute Bigger!

#Performance #MemoryEfficiency #DataScience
July 2, 2025 at 5:43 PM
Struggling with slow I/O in #HDF5? Try #Blosc2 as a filter or I/O data handler — faster data, less pain!

👉 www.blosc.org/posts/pytabl...

#Performance #DataScience
July 1, 2025 at 12:24 PM
📣Python-Blosc2 3.5.0 is out! 🚀

This release introduces the powerful stack() function! 🥞 You can now stack multiple Blosc2 NDarrays along a new axis, similar to np.stack(), while getting great performance.

We have blogged about it here: www.blosc.org/posts/blosc2...

Compress Better, Compute Bigger
June 24, 2025 at 3:52 PM
📢 We are pleased to announce the integration of a new stack feature in #Blosc2 🚀, which allows for stacking large arrays along a new axis.

We've updated our recent blog post:
Check it out! 👇
www.blosc.org/posts/blosc2...

Compress Better, Compute Bigger
#Python #DataScience #Performance #OpenSource
June 23, 2025 at 4:34 PM
#Python-Blosc2 is hitting 1 million weekly downloads on PyPI! 🎉

Users are rapidly adopting #Blosc2, which now accounts for over 95% of downloads compared to Blosc1. 📈 Thanks to our amazing users. 🙏 🚀

Our motto: Compress Better, Compute Bigger! 💪

#Milestone #CommunitySupport #DataCompression
June 5, 2025 at 4:24 PM
Reposted by Blosc Development Team
We're making HDF5, the standard for scientific data 📊, faster ⚡ and more versatile 🛠️. By integrating Blosc2 with HDF5, our Caterva2 platform allows you to natively serve ☁️, share 🤝, visualize 👀, and compute 💻 your HDF5 datasets with greater efficiency and ease.

Slides:
www.blosc.org/docs/2025-Eu...
May 27, 2025 at 4:46 PM