Update documentation about read_vec function in SP1 gitbook #1840
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Motivation
I am working on an SP1 application that reads in ~200kB of input data from input. I was able to improve prover performance by a factor of 3 by replacing read with read_vec. I had to figure this out by reading code, so I want to document this big performance difference in the relevant documentation.
Solution
I am just documenting this for now, but when Rust adds specialization for functions, read<Vec> should just default to a non-serializing version by default. (specialization is a nightly feature right now)
PR Checklist