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

Inventing the AI/HPC 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

hicain-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 two fronts, the AI/HPC datacenter and mission-critical sensing. Each is an open-source programme in its own right.

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HiCAIN, AI/HPC Research & Education

High-performance Computing, AI and Networking

HiCAIN is our open initiative for AI/HPC skills and infrastructure. It spans academic training through the HiCAIN Academy learning platform and the Cnuas Virtual AI HPC Infrastructure, a fully software-emulated GPU cluster you can run on a laptop. Together they let engineers, students and researchers learn, build and experiment without a million-dollar lab.

HiCAIN.io ↗ Learn About Cnuas

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TORUS, Unattended Facility Sensing

Unattended Facility Sensing platform

TORUS protects the physical facilities that house AI and HPC. It monitors campus perimeters, data halls and critical approaches across ground, visual and drone/UAS detection layers, 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.

Explore TORUS Try the CCISRT Console ↗ Capability Brief ↗

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.