optimize extrapolation with zero field inverse during runtime #956
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spherel
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May 29, 2025
| ))] | ||
| pub struct IOPProof<E: ExtensionField> { | ||
| pub point: Vec<E>, | ||
| pub point: Point<E>, |
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I just found Point<E> shouldn't be included in IOPProof<E>. What do you think about it?
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yes I agree with you we should remove it and I will submit another PR to do that since in involved more change outside of this scope
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build on top of #956 to address review comments clean up point from sumcheck proof, as verifier should derived itself
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…-tech#956) Extracted from scroll-tech#952. Observe a bottleneck on previous interpolation which contribute to most of time due to `vector.extend` operation and bunch of allocations. This PR rewrite univariate extrapolation 1. as the point to be interpolate are fixed set, we can pre-compute all stuff require field inverse 2. in-place change to avoid allocation In Ceno opcode main sumcheck part we batch different degree > 1 into one batch so this function will be used. It shows a slightly improvement (~3%) on Fibonacci 2^24 e2e | Benchmark | Median Time (s) | Median Change (%) | |----------------------------------|------------------|--------------------| | fibonacci_max_steps_1048576 | 2.3978 | +0.9805% (No significant change ) | | fibonacci_max_steps_2097152 | 4.2579 | +1.7587% (Change within noise) | | fibonacci_max_steps_4194304 | 7.7561 | -3.5338% |
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Extracted from #952.
Observe a bottleneck on previous interpolation which contribute to most of time due to
vector.extendoperation and bunch of allocations.This PR rewrite univariate extrapolation
benchmark
In Ceno opcode main sumcheck part we batch different degree > 1 into one batch so this function will be used.
It shows a slightly improvement (~3%) on Fibonacci 2^24 e2e