New Zealand · operational · hpc

Maui

Operated by NIWA at NIWA HPC Facility (Greta Point) .

Phase 1 seed dataset, compiled by hand. These rows were built from public operator, laboratory and vendor sources. A mechanical second-reader pass has since fetched every cited source: 1092 of 1153 systems have a readable citation that names them, and 40 are genuinely weakly sourced. Every claim carries its source and a confidence tier. Treat anything below verified as a lead, not a citation.

Measured performance

Rmax: 910.00 TFlop/s
Rpeak: 1.43 PFlop/s
Rmax ÷ Rpeak: 63.6%
Cores: 18,560
Power: -
Per watt: - GF/W

Figures are as last publicly reported for the configuration described below, not a live measurement. Where a system was upgraded in place, the post-upgrade configuration is shown and the earlier one appears in the timeline.

What this machine is made of

One row per supplier relationship. “Supplier at build” is the company that shipped the part at the time; where that company has since been acquired, the parent it rolls up to today is shown beside it. That distinction is what makes ticker-level aggregation possible across a thirty-year dataset.

Role	Part	Supplier at build	Quantity	Confidence	Source
Integrator	- Cray XC50	Cray HPENYSE rolls up to Hewlett Packard Enterprise	-	Verified	niwa.co.nz top500.org
CPU	Intel Xeon Gold 6148 CPUs x86-64 · 20C · 2.4 GHz · 14 nm · 150 W Intel Xeon Gold 6148 20C 2.4GHz	Intel INTCNASDAQ	-	Reported	top500.org
Interconnect	Cray Aries Interconnect Dragonfly · About 10 GB/s per direction · Around 1 microsecond Cray Aries interconnect, dragonfly topology	Cray HPENYSE rolls up to Hewlett Packard Enterprise	-	Reported	top500.org
Operating system	Cray Linux Environment Operating systems Linux, Cray-customised · Proprietary layer over open-source Linux Cray Linux Environment	Cray HPENYSE rolls up to Hewlett Packard Enterprise	-	Reported	top500.org

The read

One of three Cray systems NIWA and NeSI procured together in 2017 to replace the IBM Power 575 machine FitzRoy: Maui is the Cray XC50 capability system, paired with the Cray CS400 capacity cluster Mahuika at the same Wellington facility, which this dataset does not carry as a separate row. NIWA's own announcement of the NZ$18 million investment, plus NZ$4.8 million from the Universities of Auckland and Otago and Landcare Research, and TOP500's own news coverage independently agree on the vendor, the Cray XC50 platform, the 1.4 PFlop/s peak figure and the Greta Point, Wellington site, so those facts are verified; TOP500's system page remains the only source for the measured Rmax, the exact core count and the first TOP500 rank, 321st in June 2018. New Zealand eScience Infrastructure (NeSI) operates the machine for the national research community; the operator field here follows TOP500's own choice of NIWA as the hosting institution.

Timeline

2017-06 Announced source
2018 First operational source
2018-06 List debut at #321 (June 2018) source

Public list appearances

Pointers only: rank and edition, linking to the canonical entry. We do not reproduce list tables. See sourcing policy.

#321: TOP500, June 2018 →

Site & facility

NIWA HPC Facility (Greta Point)

Location: Wellington, New Zealand
Commissioned: 2018

niwa.co.nz top500.org

Change history

2026-09-23 Added, New Zealand's national capability system, with a rank pointer on its highest edition

Source check

We fetched this system's own citations and recorded whether each page actually mentions it. This is a corroboration signal, not a fact check, and it is published so you can see how well the sourcing holds up rather than take it on trust.

Cited source	Result	Found on the page
niwa.co.nz	does not name this system	Cray Aries
top500.org	names system and part	Intel Xeon Gold 6148, Cray Aries, Cray Linux Environment

Checked 2026-10-09 by pnpm verify. Re-run it and the table changes with the web.