↳ CAF WATCHER // CONTINUOUS PHYSICAL AUDIT LEDGER
RIKEN & Fujitsu (Fugaku) Grade A+
Japan's sovereign exascale supercomputing monument: ARM A64FX architectural mastery and national resilience · Category: Supercomputing & National HPC
Executive Physical Feasibility & Delivery Audit
Institutional Baseline: Evaluated under the Compute Availability Factor (CAF v1.0) specification by Richie Adomako (Serpens Inc., ResearchGate ID 414150400). CAF evaluates stated accelerator capabilities against empirical physical reality (interconnection queues, electrical substations, liquid cooling heat transfer, and optical network fabrics). Missing public evidence is classified as unknown—it is never treated as zero capacity.
CAF INTERVAL
[0.63 – 0.96]
DELIVERY GAP SCORE
12 pts
OPERATING POWER
0.05 GW
vs 0.1 GW announced
EVIDENCE CONFIDENCE
MEDIUM (65%)
Physical Coupling Pillars (E, T, N, O)
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Power & Grid Substrate (E = [object Object]): 96/100. Powered by a dedicated 77kV underground transmission line from Kansai Electric Power, engineered to maintain power continuity even during magnitude 7+ earthquakes.
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Thermal Dissipation & CDU Limits (T = [object Object]): 95/100. Every single A64FX processor is cooled by water flowing through micro-machined copper channels at 15°C inlet temperature, dissipating 95%+ of heat to water.
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Cluster Topology & Optical Fabric (N = [object Object]): 97/100. Tofu-D network embeds routing directly into the CPU packaging, creating a 6D torus topology with fault-tolerant multi-path communication across 432 racks.
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Silicon & Operational Availability (O = [object Object]): 88/100. Pioneered on-package HBM2 memory for general-purpose CPUs, achieving 1,024 GB/s memory bandwidth per node.
Attributable Public Evidence Ledger