GBICS · Compute cluster connectivity · UAE
High-Performance Computing Networking in the UAE
Specify the connections that keep your compute cluster working together.
Source optical modules, QSFP and OSFP connectivity options, and data centre cabling for HPC projects in Dubai and across the UAE. Bring GBICS your cluster requirements for a platform-specific review of transceivers, cable assemblies and link distances.
Built around the complete link
Compute.Communicate.
Scale.Switch → Interconnect → Adapter
Match the interconnect to the workload
An HPC network must move the right data, between the right nodes, at the right time.
Bandwidth
Plan for simultaneous data exchange, storage access and future node growth. Check sustained demand and fabric oversubscription rather than relying only on the port speed label.
Latency
Assess message size, communication frequency and congestion. Measure application-relevant behaviour on the target platform before making performance commitments.
Compatibility
Align the switch, adapter, module, cable, firmware and protocol. A mechanically fitting connector is only one part of a supported connection.
For IT buyers and project leads
Connectivity for research, simulation and accelerated computing
HPC projects bring together compute, storage and network resources with different traffic patterns. A clear connectivity specification helps procurement teams compare equivalent products and engineers plan a consistent deployment.
Scientific & engineering simulation
Support cluster designs for distributed modelling and simulation. Document node counts, communication patterns and topology requirements before selecting the compute-fabric interconnects.
GPU & accelerated workloads
Plan links for distributed training, analytics and other accelerator workloads. Match the network adapter and switch architecture to the required collective communication and data movement.
Storage & data pipelines
Specify connectivity for input datasets, checkpoints and shared storage. Evaluate storage traffic separately from node-to-node communication so both can be sized and tested appropriately.
Keep management, compute and storage requirements visible
Record which links serve each network function, whether they share a fabric or use separate infrastructure. SFP/SFP+ management and service links may coexist with high-speed QSFP or OSFP compute links, but each requires its own port and compatibility checks.
For SFP transceivers in Dubai, high-speed optical modules in the UAE or a complete HPC cabling BOQ, send the endpoint models and link requirements so the quotation can be reviewed against the actual design.
Choose the architecture first
Ethernet and InfiniBand for HPC clusters
| Consideration | Ethernet fabric | InfiniBand fabric |
|---|---|---|
| Host and switch support | Ethernet-capable adapters and switches with the required port modes | InfiniBand-capable adapters and switches with a supported generation and mode |
| RDMA requirements | RoCE requires supported endpoints and suitable network configuration | Use the platform's supported InfiniBand RDMA stack and fabric management |
| Operational design | Review routing, congestion handling and any platform-specific ECN/PFC requirements | Review subnet management, routing and fabric configuration |
| Interconnect approval | Check the vendor's Ethernet cable and optics support list | Check the vendor's InfiniBand cable and optics support list |
Ethernet and InfiniBand are different protocols. Some specific interconnect products support both on approved platforms; never infer that from a speed label, vendor coding or connector alone. GBICS should confirm exact product suitability and availability against your BOQ.
QSFP & OSFP selection: look beyond the form factor
Electrical lane mapping
Confirm lane count, signalling rate and supported port modes. QSFP-DD and QSFP112 can implement the same aggregate rate using different host interfaces; they are not automatic substitutes.
Cooling & power
Check module power limits, airflow and the required mechanical variant. For OSFP platforms, verify the prescribed module top and cooling arrangement at each end of the link.
Native rate vs. aggregate rate
A twin-port 2 × 400G OSFP module provides two 400G connections. Its 800G aggregate designation should not be treated as proof of a single native 800G optical interface.
For NVIDIA adapter or switch requirements, include the precise product code and firmware. For other platforms, supply the equivalent details. Brand names identify compatibility requirements and do not imply authorized reseller status or universal support.
Engineering reference
HPC optical connectivity: representative Ethernet specifications
The table below compares specific Ethernet optical interfaces used when planning high-bandwidth links. InfiniBand links require their own platform-approved product specifications. Listed reach is conditional on the module datasheet, fibre grade and complete optical channel.
| Form factor / interface | Data rate | Maximum listed reach | Fibre | Wavelength | Connector | Compatibility |
|---|---|---|---|---|---|---|
| QSFP28 / 100GBASE-SR4 | 100 Gb/s Ethernet | 70 m OM3 / 100 m OM4 | MMF | 850 nm | MPO-12 | 100G host and matching SR4 endpoint |
| QSFP28 / 100GBASE-LR4 | 100 Gb/s Ethernet | 10 km | SMF | 4 LAN-WDM channels near 1310 nm | Duplex LC | 100G host and matching LR4 endpoint |
| QSFP-DD / 400GBASE-DR4 | 400 Gb/s Ethernet | 500 m | SMF | 1310 nm | MPO-12 APC | QSFP-DD host, supported FEC and lane mode |
| QSFP-DD / 400GBASE-FR4 | 400 Gb/s Ethernet | 2 km | SMF | 1270 / 1290 / 1310 / 1330 nm | Duplex LC | QSFP-DD host and matching FR4 endpoint |
| QSFP112 / 400GBASE-DR4 | 400 Gb/s Ethernet | 500 m | SMF | 1310 nm | MPO-12 APC | QSFP112 host; verify electrical lanes and firmware |
MMF = multimode fibre; SMF = single-mode fibre. Wavelength values are nominal. Confirm the exact module, connector polish, FEC mode and host support. No Ethernet row implies InfiniBand compatibility.
Breakout is a system feature
A cable or optical splitter alone does not establish breakout support. Verify the parent port mode, electrical lanes, optical lane mapping and receiving endpoints. For example, a supported 400G DR4 implementation may connect to four 100G DR endpoints; a 100G LR4 module is not a substitute for those DR endpoints.
Understand nominal bandwidth before comparing performance
The chart converts line rate from gigabits per second to gigabytes per second by dividing by eight. It is a theoretical unit conversion, not measured payload throughput or an application benchmark.
Evaluate the fabric, not just an isolated link
Agree tests for relevant message sizes, simultaneous node traffic, storage throughput and job completion time. Measure latency under representative load and document the test configuration so results can be compared meaningfully.
HPC data centre cabling: DAC, AOC and structured fibre
DAC for short equipment links
Consider direct attach copper where distance and host support allow. Verify supported length, cable gauge, bend radius and both connector ends. Active copper options require their own product and platform checks.
AOC for integrated optical links
Use an approved active optical cable where a fixed assembly suits the design. Confirm protocol, length and endpoint support; do not assume an AOC option exists for every speed or platform.
Optics with MPO/MTP or LC fibre
Use separate modules and patching where the design needs modular components. Specify fibre type, connector count, polarity, gender, polish and total loss budget. MTP is a branded MPO implementation.
From design to deployment
A compatibility and acceptance checklist for your cluster
- Identify both endpoints. Record switch, adapter and port identifiers, firmware, protocol and required speed.
- Define the physical channel. Record route distance, cable assembly type, connector details, patching and optical loss budget.
- Confirm platform support. Check the exact part number, module power, cooling, lane mapping, FEC and breakout configuration.
- Validate representative links. Check host recognition, link stability, diagnostics where available and error counters under the intended settings.
- Test the workload. Use agreed cluster-level tests and application metrics before accepting performance claims.
- Prepare deployment and spares. Align port maps, approved replacement parts, quantities, maintenance windows and delivery dates.
HPC project procurement in Dubai and across the UAE
Consolidate your required optical modules, DAC/AOC assemblies and fibre cabling into one itemised request. Ask GBICS to confirm proposed part numbers, compatibility assumptions, quantities, availability and applicable warranty terms.
GBICS advertises UAE stock, same-day dispatch and lifetime warranty. Confirm eligibility and stock for each quoted item, together with dispatch cutoff and destination delivery estimates. Include your deployment date and delivery location when requesting a quote.
High-Performance Computing FAQs
What is high-performance computing networking?
HPC networking connects compute nodes, accelerators and storage so distributed applications can exchange data. The design must balance bandwidth, latency, congestion, topology and software requirements against the workload and cluster size.
Should an HPC cluster use Ethernet or InfiniBand?
The choice depends on the applications, adapters, switch platform, operational skills and existing infrastructure. Ethernet with RDMA over Converged Ethernet and InfiniBand have different configuration and support requirements. Select a supported end-to-end architecture before choosing cables or transceivers.
Are Ethernet and InfiniBand transceivers interchangeable?
Do not assume interchangeability. Some specific cable and transceiver products support both protocols on approved platforms, but speed and form factor alone do not establish compatibility. Check the exact module, adapter, switch, firmware and supported protocol mode.
What is the difference between QSFP-DD, QSFP112 and OSFP?
These are distinct module form factors or interface families. QSFP-DD and QSFP112 can implement the same aggregate data rate using different host electrical lane arrangements. OSFP is mechanically different. Port, lane, thermal and platform support must be checked for the exact product.
Does an 800G-labelled module always provide one 800G connection?
No. Some modules provide two independent 400G connections with 800G of aggregate capacity. Check whether the selected module is a native 800G interface or a twin-port design, and confirm the supported breakout and optical mapping.
Can MPO or MTP cabling be reused for a cluster upgrade?
Possibly, after checking fibre type, fibre count, active fibre positions, polarity, connector gender, polish and channel loss. The connector shape alone is not enough. Match both optical endpoints and inspect and clean connectors before use.
Can faster optics guarantee lower application latency?
No. Application latency depends on adapters, switches, software, traffic patterns, congestion and the wider system. A higher line rate reduces ideal serialization time for a fixed data size, but it does not by itself guarantee better job completion time.
How do I request an HPC connectivity quote in the UAE?
Email store@gbics.ae with switch and adapter models, firmware versions, protocol, port rates, rack distances, fibre details, quantities and delivery location. Attach a BOQ or port map and ask GBICS to confirm suitable products, availability and warranty terms.
Specify your next cluster connection
Request a custom HPC networking quote
Share your switch and adapter models, link rates, protocol, rack distances and quantities. Get a project quotation built around your connectivity requirements.
Request an HPC enterprise quoteEmail store@gbics.ae and attach your BOQ or port map.