Cielo (supercomputer)

{{Short description|United States supercomputer}}

{{primary sources|date=October 2017}}

{{Infobox custom computer

| Image =

| Caption = Cielo components

| Dates =

| Operators = National Nuclear Security Administration

| Sponsors =

| Location = Los Alamos National Laboratory

| Architecture = Cray XE6 with Dual AMD Opteron™ 6136 eight-core “Magny-Cours” Socket G34 @ 2.4 GHz{{cite web | url=http://www.lanl.gov/orgs/hpc/cielo/ | publisher=Los Alamos National Laboratory | title=Cielo: NNSA Capability Supercomputer | archive-url=https://web.archive.org/web/20141016100625/http://www.lanl.gov/orgs/hpc/cielo/ | access-date=2013-04-02 | archive-date=2014-10-16 }}

| Memory = 286 terabytes DDR3 @ 1333 MHz

| Storage = 7.6 PB User Available Capacity

| Speed = 1,110 TF using 142,272 cores

| OS =

| Power = 3.98 Mega Watts

| Space = 3000 square feet (278.7 m²)

| Cost = US$ 54M{{cite news | url=https://www.bbc.co.uk/news/technology-21993132 | work=BBC News | title='Petaflop' supercomputer is decommissioned | access-date=2013-04-02 | date=2013-04-01 }}

| ChartName = TOP500

| ChartPosition = 6

| ChartDate = 2011

| Purpose = Primarily utilized to perform milestone weapons calculations

| Legacy =

| Emulators =

| Website =

| Sources =

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Cielo was a United States supercomputer located at Los Alamos National Laboratory.{{cite news |last1=Morgan |first1=Timothy Prickett |title=With "Crossroads" Supercomputer, HPE Notches Another DOE Win |url=https://www.nextplatform.com/2020/10/01/with-crossroads-supercomputer-hpe-notches-another-doe-win/ |access-date=5 November 2020 |work=The Next Platform |date=1 October 2020}} Built by Cray Inc, the computer was part of the Advanced Simulation and Computing Program to maintain the United States nuclear stockpile.

From 31 March 2013, with the retirement of IBM Roadrunner, it took over as their front line computer. {{As of|2014|June}}, it is ranked as number 32 on the TOP500. {{As of|2016|09|29}}, it has been decommissioned and powered down permanently.{{citation needed|date=January 2017}} Cielo was succeeded by Trinity.