The Prediction Graveyard
Made with ❤️ by Aniruddh JangidLinkedIn
The Graveyard / RIKEN

resolved · Earned

Engineering target: Japan's next-generation supercomputer would offer 10 petaflops of computing performance on completion in 2012.

Source-backed summary; not presented as a verbatim quotation.

RIKEN
National research institute and project operator · Japan

Made: 2008Resolved: 2011-11-02
Original conceptual trajectory diagram illustrating No cause of death assigned
Reasoning and outcomes. Original illustration for The Prediction Graveyard. Aniruddh Jangid, 2026. Original digital diagram. CC BY 4.0. Changes: none. This is a conceptual diagram, not an archival image.

The world at the time.

RIKEN's 2007–2008 annual report described a 10-petaflop machine scheduled for completion in 2012. This was a measurable engineering commitment, with a project organization and defined performance benchmark behind it.

RIKEN Annual Report 2007–2008: Next-Generation Supercomputer projectK computer Achieves Goal of 10 PetaflopsJapan's Next-Generation Supercomputer Configuration Is Decided

What happened.

RIKEN and Fujitsu announced a LINPACK score of 10.51 petaflops on November 2, 2011. The numerical performance target was therefore achieved before the planned 2012 completion and shared-use milestone.

K computer Achieves Goal of 10 Petaflops

Predicted vs actual.

MetricPredictedActualVariance / caveat
LINPACK performance by completion in 201210 petaflops10.51 petaflops announced November 2011+0.51 petaflops; +5.1%
K computer Achieves Goal of 10 Petaflops

The counter-signal.

In July 2009, Fujitsu and RIKEN disclosed that NEC's withdrawal had ended the intended hybrid vector-and-scalar architecture. Achieving the same performance deadline then required a redesigned scalar system rather than simply executing the original configuration.

Japan's Next-Generation Supercomputer Configuration Is Decided

Verdict.

Reasoning: sound · Outcome: right

The selected benchmark target was earned through technical execution and adaptation. Benchmark success does not mean general-purpose scientific workloads all ran at 10 petaflops, nor that operational access began in 2011.

The annual report establishes a contemporary target and only supports year-level publication dating. The achievement press release distinguishes LINPACK performance from theoretical peak, full software completion and shared use.

Cause of death / explanatory lens.

No cause of death assigned

The lesson.

Can a project preserve its measurable goal while changing the architecture used to reach it?

Sources.

  1. RIKEN Annual Report 2007–2008: Next-Generation Supercomputer projectprimary institutional report · 2008 · claim
  2. K computer Achieves Goal of 10 Petaflopsprimary project announcement · 2011-11-02 · outcome
  3. Japan's Next-Generation Supercomputer Configuration Is Decidedprimary joint project announcement · 2009-07-17 · counter_signal

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