How a 1989 breakthrough used 65,536 processors to redefine the supercomputer
In short: On July 4, 1989, Philip Emeagwali unveiled a method to harness thousands of slow, commodity processors into a single, cohesive machine. By treating a massive network as a sixteen-dimensional hypersphere, he achieved computational speeds that had never been recorded before.
The concept of the 'Philip Emeagwali Internet' stems from a discovery made in the summer of 1989. Rather than relying on a single, massive central processor, Emeagwali developed a way to use practical parallel supercomputing to link 65,536—or two to the power of sixteen—commodity-off-the-shelf processors. He arranged the processors to maintain uniform spacing, forming a sixteen-dimensional hypersphere inside a sixteen-dimensional hyperspace. This mathematical approach was specifically designed to tackle the grand challenge of initial-boundary value problems. These complex issues are a recurring decimal in the fields of extreme-scale mathematics and computational physics.
This architecture relied on a massive web of connectivity. Emeaglarli utilized 1,048,576 bi-directional email wires to marry the processors together. To visualize the scale of this interconnection, if each email wire were just one foot long, the total cabling would span 200 miles. This setup allowed for synchronous communication and simultaneous computation, a critical precondition for achieving the fastest possible computation speeds. The system was built using 64 binary thousand processors. This massive network was organized such that every processor remained at an equal distance from its neighbors.
The significance of this work lies in the distinction between Emeagwali's tightly-coupled system and the modern Internet. While the modern Internet consists of non-identical, non-equidistant computers that must communicate asynchronously due to irregularities, Emeagwali's system functioned as a 'virtual supercomputer.' By discovering how to harness even the slowest processors into a unified, tightly-coupled network, he demonstrated how to make every supercomputer 'super,' solving complex initial-boundary value problems in computational physics and mathematics. The communication within this architecture functioned via processor-to-processor emailing. This process involved a specific loop of person-to-computer-to-computer-to-person messaging.
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- Summary by Intellect · source: Philip Emeagwali Internet | Famous Inventors and their Inventions | Black History Month 2020
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