Equation 11 · Part 2 · What an AI Accelerator Actually Is: Silicon, Packaging, and the Memory It Can Reach
subscript
subscript
What this part means
The lower label selects a particular version, component, or indexed member of the quantity. For example, x₀ and xₜ can be values at different positions.
Its job in the formula
A subscript distinguishes a version, component, step, or member of a quantity. It does not automatically mean multiplication.
Full expression→subscript→Article meaning
The passage around this formula
with W operations and Q bytes. Let be the machine’s peak arithmetic rate and its achievable memory bandwidth. Then attainable performance is bounded by
Learn the underlying idea
A subscript is a label attached below a symbol. It often selects a time step, component, category, or member of a sequence.
Open the illustrated subscripts: which member of a family? guide →
Sources cited in the article section
- [2] Roofline: An Insightful Visual Performance Model for Floating-Point Programs and Multicore Architectures ↗
- [4] AI and Memory Wall ↗
- [5] FlashAttention: Fast and Memory-Efficient Exact Attention with IO-Awareness ↗
These citations provide research context; check each source for the exact claim it supports.