Open Source and AI-First AI/HPC Hyperscale Infrastructure Research & Development Laboratory

Re-inventing the AI/HPC Hyperscale Datacenter

PacketFive is an Irish R&D start-up developing novel open-source technologies that shape the future of AI and high-performance computing infrastructure, from academic training programmes to full-stack datacenter simulation.

Our Products The Technology

cnuas-vswitchd.c - Cnuas fabric

static int vswitch_route_frame(struct port *ingress,
                               struct frame *f)
{
    switch (frame_classify(f)) {
    case FRAME_INFINIBAND:
        return ib_forward(ingress, f);
    case FRAME_ROCEV2:
        return roce_forward(ingress, f);
    case FRAME_ETHERNET:
        return l2_forward(ingress, f);
    }
    return -EINVAL;
}

/* Cnuas Virtual AI HPC Infrastructure, 100% software-emulated */
/* RoCEv2 + InfiniBand + L2 multiplexed on one fabric        */

Our Mission

To invent the technologies that will shape the next generation of AI and HPC datacenters, and to make them openly available to researchers, educators and operators worldwide.

Our Focus Areas

PacketFive pursues open R&D across Skills Training & Development in Hyperscale AI/HPC Infrastructures, Virtualization and Simulation of AI/HPC Hyperscale Data Centers, and Cyber-Physical Security Systems for the AI/HPC Data Centers.

Cnuas, Virtual AI/HPC Datacenter

AI/HPC datacenter simulation platform

Cnuas simulates a complete AI/HPC datacenter in software, from GPUs and RDMA NICs to the switch fabric, the GPU interconnect and VM lifecycle, all driven by one control plane with a CLI and REST API. It runs on a laptop, which makes it a practical base for training, research, tooling development and pre-silicon experimentation.

Cnuas.io ↗ Learn About Cnuas

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HiCAIN, AI/HPC Training & Skill Development

High-performance Computing, AI and Networking

HiCAIN is our open initiative for AI/HPC skills. The HiCAIN Academy learning platform takes engineers, students and researchers from fundamentals through GPU fabrics, RDMA networking and cluster operations. Courses run hands-on against Cnuas, so learners drive a full GPU cluster without needing a million-dollar lab.

HiCAIN.io ↗ Academy ↗

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TORUS, Cyber-Physical Security System for Mission-Critical AI/HPC Datacenters

Cyber-physical security and unattended air-ground-visual sensing

TORUS protects the physical facilities that house AI and HPC. It extends the unattended ground sensor model into a UAGVIS platform, sensing in the ground, at eye level and in the air above campus perimeters, data halls and critical approaches. It classifies security events with AI at the edge and at command, and drives facility response under safety interlock, even where mains power and network are unavailable. Low-signature and auditable by design, it spans the TORUS-SN node, the TORUS-MEG gateway and the TORUS-CCISRT command layer, and is built to support TIA-942 and OCP-aligned facility programs.

TORUS Products Try the CCISRT Console ↗ Explore TORUS ↗

What Drives Us

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Research First

Engineering rooted in academic rigour. We publish, prototype, and build on proven science.

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Open by Default

Core tooling, training material and reference implementations are open-source under permissive licences.

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Ireland R&D Lab

Headquartered in Sandyford, Dublin, an Irish-registered company engaged globally with the AI/HPC community.