---
title: "The tensor engine was first implemented inside SN3 (before it was called Lush) in 1992 at Bell Labs ..."
source_name: "Yann LeCun(@ylecun)"
original_url: "https://x.com/ylecun/status/2045606881125642536"
canonical_url: "https://www.traeai.com/articles/b25dae67-19e9-43c9-b94c-d51ee3fcf0df"
content_type: "tweet"
language: "英文"
score: 7.5
tags: ["深度学习","PyTorch","张量计算","AI历史","贝尔实验室"]
published_at: "2026-04-18T20:54:20+00:00"
created_at: "2026-04-19T13:49:09.156899+00:00"
---

# The tensor engine was first implemented inside SN3 (before it was called Lush) in 1992 at Bell Labs ...

Canonical URL: https://www.traeai.com/articles/b25dae67-19e9-43c9-b94c-d51ee3fcf0df
Original source: https://x.com/ylecun/status/2045606881125642536

## Summary

Yann LeCun回顾1992年在贝尔实验室与Léon Bottou开发的SN3（后称Lush）中首次实现张量引擎，其命名规范延续至PyTorch等现代深度学习库。

## Key Takeaways

- 张量引擎最早于1992年在贝尔实验室的SN3/Lush系统中实现
- PyTorch等库沿用了该早期系统的张量操作命名规范
- EBlearn、Torch5/7等项目继承并传播了这一技术传统

## Content

Title: Yann LeCun on X: "@norpadon The tensor engine was first implemented inside SN3 (before it was called Lush) in 1992 at Bell Labs by Léon Bottom and me.
The naming convention has survived to this day in PyTorch and other libraries.

The naming of the tensor operations was reused in EBlearn (C++ deep learning" / X

URL Source: http://x.com/ylecun/status/2045606881125642536

Markdown Content:
# Yann LeCun on X: "@norpadon The tensor engine was first implemented inside SN3 (before it was called Lush) in 1992 at Bell Labs by Léon Bottom and me. The naming convention has survived to this day in PyTorch and other libraries. The naming of the tensor operations was reused in EBlearn (C++ deep learning" / X

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[![Image 1](https://pbs.twimg.com/profile_images/1483577865056702469/rWA-3_T7_normal.jpg)](http://x.com/ylecun)

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The tensor engine was first implemented inside SN3 (before it was called Lush) in 1992 at Bell Labs by Léon Bottom and me. The naming convention has survived to this day in PyTorch and other libraries. The naming of the tensor operations was reused in EBlearn (C++ deep learning library written by Pierre Sermanet and me, with some help from 

[@soumithchintala](http://x.com/soumithchintala)

). It was recycled in Torch5 and Torch7, which was written largely by Ronan Collobert, and my students Clément Farabet, and 

[@koraykv](http://x.com/koraykv)

 ). Clément and Koray had been brought up on Lush (the open version of SN) and knew the nomenclature. Then, Soumith used the same conventions in PyTorch.

[8:54 PM · Apr 18, 2026](http://x.com/ylecun/status/2045606881125642536)

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*     [![Image 2](https://pbs.twimg.com/profile_images/1483577865056702469/rWA-3_T7_normal.jpg)](http://x.com/ylecun)       [Yann LeCun](http://x.com/ylecun) [@ylecun](http://x.com/ylecun)    Follow   Click to Follow ylecun  Professor at NYU & Executive Chairman at AMI Labs. Ex-Chief AI Scientist at Meta. Researcher in AI, Machine Learning, Robotics, etc. ACM Turing Award Laureate.   

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