Equation 2 · Part 1 · An Optical Fabric Turns Off-Package Memory Into an Extension of the Die
Symbol L
What this part means
the computing.
Its job in the formula
L is part of the quantity the equation computes from the expression on the right.
Full expression→Symbol L→Article meaning
Where the article explains it
In practice, computing L for the Photonic Fabric Module runs into a wall immediately, and the wall is worth describing precisely rather than waved past.
The passage around this formula
I define a compute-to-memory locality index, L , as the ratio of two bandwidth-per-joule figures: the realized random-access bandwidth a system can sustain across its full memory pool, divided by the power it costs to sustain that bandwidth, computed once for the optically unified case and once for the same total memory capacity attached the…
Learn the underlying idea
A variable is a named place for a value. Its letter is a local label: x can mean position in one formula and a data point in another.
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The article lists its research sources here.