Earlier this year, Intel announced a revolutionary chip—Heracles—to drive Fully Homomorphic Encryption (FHE) computing into the mainstream. Through the development of innovative technology that allows for secure data processing without sacrificing privacy protections, this transformative technology stands to improve numerous applications. At an ISSCC live demo, they provided the launch announcement. The spectacle along the Potomac and the scale of the 100s of Heracles flying showed off Heracles’ remarkable capabilities.
With 64 compute cores arranged in an eight-by-eight grid, Heracles is much larger than current FHE research chips. Inspiring, cutting edge Heracles is truly a game changer in the field. It is about 20 times larger than average chips, which tend to be 10 square millimeters or smaller. Designed with Intel’s new state-of-the-art, 3-nanometer FinFET technology, this chip will make a huge impact in the world of computing where everything is encrypted.
Heracles is also impressive in terms of its sheer size. It features a remarkable on-chip 2D mesh interconnect that dynamically connects tile-pairs via ultra-low-latency 512-byte buses. This TSMC architecture enables low latency, high bandwidth communication and data transfer between every part of the chip. Additionally, by utilizing high-bandwidth memory, its performance becomes even more efficient, enabling encrypted computing on a massive scale for the first time.
Performance Breakthroughs
Heracles is already showing very impressive performance metrics, accomplishing fundamental mathematical transformations in as little as 39 microseconds. This is a dramatic 2,355 times improvement compared to traditional Intel Xeon CPUs. The chip featured astonishing speedup, reaching over 5,000x the throughput of top-performing Intel server CPUs. The platform proved especially effective at addressing FHE computing workloads.
The chip’s architecture allows three synchronized instruction streams to be executed simultaneously, including both application score boarding and 3D. This involves multiple streams, one in charge of orchestrating data movement onto and off the processor. A second stream moves data internally, and a third stream conducts math calculations. Heracles really shines in performance due to its fast parallel processing ability. As it quickly jumps between tile-pairs, this allows it to reach a stunning 9.6 terabytes per second data movement rate.
Intel’s commitment to advancing encrypted computing is evident in Heracles’ performance across seven key operations, where it outperformed other chips by a factor ranging from 1,074 to 5,547 times. This jump in efficiency is what makes this leap solidifies Heracles’ position as the first hardware that can realistically function at scale for FHE applications.
“We have proven and delivered everything that we promised.” – Ro Cammarota
Future Applications and Integration
Intel imagines more generalized use cases for Heracles, especially in spaces that need complex machine-learning tasks. As Kurt Rohloff noted, “Where you start to need hardware is emerging applications around deeper machine-learning oriented operations like neural net, LLMs, or semantic search.” The ramifications of this technology reach all industries, especially those where data privacy and security are critical.
Heracles’ developers have ambitious plans for the chip’s future, aiming to integrate it with custom silicon to facilitate non-transform steps and coordinate the overall process. This integration will increase Heracles’ capabilities even more, while widening the potential use cases for the tool.
John Barrus emphasized the chip’s suitability for various models, stating, “There are a lot of smaller models that, even with FHE’s data expansion, will run just fine on accelerated hardware.” This open-ended flexibility makes Heracles an exciting agnostic solution for the range of computational needs.
Revolutionizing Encrypted Computing
Intel’s Heracles chip is a foundry point in the future of computing around confidential compute. Its unmatched speed and productivity set a new standard for what you can achieve with FHE technology. As Sanu Mathew aptly described it, “This is like the first microprocessor… the start of a whole journey.” The creation of Heracles is not only a technological achievement, but the beginning of a new era in secure data processing.
The interplay between the physical movement of data and the more abstract mathematical computation on numbers has been very carefully tuned inside Heracles. Mathew highlighted this crucial aspect by stating, “It’s all about balancing the movement of data with the crunching of numbers.” This running approach preserves Heracles found to work very well to balance the need for articulation and accuracy of protected information.
Anupam Golder pointed out the challenges associated with FHE, noting that “The size of cipher text is the same as the size of plain text, but for FHE it’s orders of magnitude larger.” This built-in complexity is a big part of the reason why innovations like Heracles that tackle these challenges directly are so vital.