Comments (3)
IIRC a row in the root table is just the powers of a generator, so another option would be to compute the powers "just in time", with one mul in each inner loop iteration (continuing as it wraps around). Could the muls potentially be cheaper than memory lookups?
from plonky2.
Interesting idea! It would depend on the size of the problem. For small enough problems the bottleneck is the sheer number of instructions per iteration; in this case recomputing the powers would be slower. For problems that are big enough to be bound by memory bandwidth, it would be faster because the input/output buffer reads/writes would no longer compete with root table reads. I’ll run some experiments to see whether it helps on our problem sizes.
from plonky2.
Done in #261.
from plonky2.
Related Issues (20)
- Inquiry about Serialization and Deserialization of the "data" Variable in plonky2-ecdsa HOT 1
- Documentation in plonky2 crate HOT 11
- The `Solidity` Verifier for `Plonky2` Proofs HOT 7
- what is the most expensive part of `compute_quotient_polys` under `plonky2/plonk2/src/plonk/prover.rs`
- Panic when trying to generate proof with invalid witness
- Understanding selected gate for each row in the trace table
- Add Prometheus metrics support to the prover
- Increase testing in starky crate HOT 3
- Allow larger constraint degrees for logUp HOT 1
- Add workspace CHANGELOG for future releases
- Deal with `CompressedStarkProof` on `starky` side
- Failed to build for wasm32-unknown-unknown with no_std
- Move `README`'s contribution guidance into a `CONTRIBUTING.md`
- Support monolith hash instead of Poseidon. HOT 1
- Amortize serialization size bloat
- Question: why BaseSumGate takes up the whole row while the other gates can share the same row across multiple instances? HOT 1
- plonky2 works very slow after MacOS Sonoma 14.4 has beed updated HOT 3
- Fix CTLs with exactly two looking tables
- Solving cross verification of n-recursed circuits using Domain Separator HOT 4
- CTL's looking table grouping is wonky
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