148 Commits

Author SHA1 Message Date
Daniel Lubarov
f3bfd66657
Add a BoolTarget (#179)
It's just a wrapper around `Target`, which signifies that the wrapped `Target` has already been range checked. Should make it easier to audit code that expects bools.
2021-08-14 08:53:39 -07:00
Daniel Lubarov
9c42fef997
Little refactor (#178) 2021-08-14 08:47:03 -07:00
wborgeaud
8aaa9401ac Add comment for slope 2021-08-14 11:48:13 +02:00
wborgeaud
43641174cb Comments 2021-08-13 18:00:40 +02:00
wborgeaud
73ab11f420 More arithmetic optimizations 2021-08-13 11:35:20 +02:00
Daniel Lubarov
b20d6dc191
Minor optimizations (#174) 2021-08-12 13:32:49 -07:00
Daniel Lubarov
38505b71ae
FRI refactor (#172)
I sort of "shifted" the loop in `fri_verifier_query_round` so that `fri_combine_initial` is called before the loop, and all `compute_evaluation` calls are in the loop (rather than the final one being outside). This lines up with my mental model of FRI, and I think it's more natural as it results in a loop with no branches, no `i - 1`s, and less state stored between iterations. Also added some comments etc.

Should be functionally equivalent to the old version.
2021-08-12 07:27:33 -07:00
wborgeaud
debc0e9cb3
Merge pull request #170 from mir-protocol/merkle_cap
Replace Merkle roots with Merkle caps
2021-08-11 08:40:12 +02:00
wborgeaud
9c01e1d942 PR feedback 2021-08-11 08:33:58 +02:00
Daniel Lubarov
090cf79787
Replace some old division code (#171)
- Delete unsafe methods
- Have related methods call the new div_add_extension method to simplify
2021-08-10 11:48:53 -07:00
wborgeaud
9f004c9664 Clippy 2021-08-10 16:18:42 +02:00
wborgeaud
e73c1d7769 Cleaning / Renaming 2021-08-10 15:53:27 +02:00
wborgeaud
ad8428f38f 12604 gates, 318637 bytes 2021-08-10 15:28:41 +02:00
wborgeaud
684df1e057 Pass cap index 2021-08-10 15:03:29 +02:00
wborgeaud
f2c423ee61 save 13 gates 2021-08-10 14:19:12 +02:00
wborgeaud
57f2b5b763 working 2021-08-10 13:52:50 +02:00
wborgeaud
f91b9b60c6 debug 2021-08-10 13:43:25 +02:00
wborgeaud
ce71b536bf First pass 2021-08-10 13:33:44 +02:00
wborgeaud
4433fd8048 Merge branch 'main' into optimize_arithmetic_ops 2021-08-10 09:11:08 +02:00
wborgeaud
b15e36d29c PR feedback 2021-08-10 09:07:01 +02:00
Daniel Lubarov
3eacd53b30
PolynomialBatchCommitment tweaks (#164)
Very minor things:
- A few renames
- Instead of having two constructors call a third constructor, just have one constructor call the other.
- Invoke FFT with the option that specifies the inputs are mostly zero, as a (minor) optimization
- Remove unused field
2021-08-09 10:11:35 -07:00
wborgeaud
f528835a59 Minor 2021-08-09 14:05:57 +02:00
wborgeaud
ff68b66bbb Add div_add 2021-08-09 13:46:20 +02:00
wborgeaud
417e6055ae Optimize coset in compute_evaluation 2021-08-09 13:21:42 +02:00
wborgeaud
d27dd92af9 Some more optimization 2021-08-09 13:08:09 +02:00
Daniel Lubarov
a02ab2853a Remove a TODO
We have a ticket for it
2021-08-08 19:43:16 -07:00
Daniel Lubarov
97c2b6b9a2
Bit of refactoring in FRI code (#162)
* Bit of refactoring in FRI code

- Inline `OpeningSet[Target]` and their `verify` methods, as they had become fairly trivial wrappers
- Have the challenger observe the openings and generate alpha inside `verify_fri_proof`. Conceptually I think of it as part of the batch-FRI protocol, and it minimizes redundancy.

* Fix tests
2021-08-08 09:14:07 -07:00
Daniel Lubarov
2d9891983f
Add a reduce_polys_base (#149)
* Add a reduce_polys_base

Reducing the polynomials in `open_plonk` was taking ~100ms on my machine. It was converting BF polynomials to the EF early on; by doing more work in the BF we can reduce it to ~20ms.

* PR feedback
2021-08-03 13:00:50 -07:00
Daniel Lubarov
b1633dc48d
More par_iter (#150) 2021-08-03 07:39:36 -07:00
Daniel Lubarov
f150f7ec09
More timing code for FRI prover (#146) 2021-08-02 15:49:06 -07:00
Daniel Lubarov
1229d90fae
Add a tree of scopes for proving times (#141)
* Add a tree of scopes for proving times

To replace the old `timed!` macro, which had no hierarchy.

It's similar to `ContextTree`, which tracks gate counts of circuit operations.

This gives a more organized output, with indentation levels based on scope depth, parent durations listed before child durations, etc.

* PR feedback
2021-08-02 10:38:09 -07:00
Daniel Lubarov
018fb005f8
Move stuff around (#135)
No functional changes here. The biggest change was moving certain files into new directories like `plonk` and `iop` (for things like `Challenger` that could be used in STARKs or other IOPs). I also split a few files, renames, etc, but again nothing functional, so I don't think a careful review is necessary (just a sanity check).
2021-07-29 22:00:29 -07:00
Daniel Lubarov
df03c22c48 Fix order 2021-07-29 09:12:24 -07:00
Daniel Lubarov
5f79b9630e
Update division calls (#132)
We have two division methods: one "unsafe" one, which permits 0/0 = anything, and one "safe" one, for which 0/0 results in an unsatisfiable instance. The latter is slightly more expensive.

I switched a few calls over to safe division, where unsafe division didn't seem sound (or at least it wasn't obvious). For calls where unsafe division did seem sound, I added comments explaining why.

Closes #97.
2021-07-28 18:06:32 -07:00
Daniel Lubarov
9081ae7337
Reduce noise in FRI logging (#129)
* Reduce noise in FRI logging

Previously, all logs related to gate counts were at the `Debug` log level. This PR gives us more flexibility to adjust the log levels of particular scopes.

In particular, our circuit checks 40 FRI queries, and we log a bunch of steps for each query, creating a lot of noise. With this change, we log just a single FRI query at the `Debug` level, and demote others to the `Trace` level.

With `RUST_LOG=debug`, our logs now look like

```
[2021-07-26T21:07:45Z DEBUG plonky2::context_tree] 17631 gates to root
[2021-07-26T21:07:45Z DEBUG plonky2::context_tree] | 8 gates to observe proof and generates challenges
[2021-07-26T21:07:45Z DEBUG plonky2::context_tree] | 4150 gates to evaluate the vanishing polynomial at our challenge point, zeta.
[2021-07-26T21:07:45Z DEBUG plonky2::context_tree] | | 3184 gates to evaluate gate constraints
[2021-07-26T21:07:45Z DEBUG plonky2::context_tree] | | | 227 gates to evaluate InterpolationGate { num_points: 4, _phantom: PhantomData }<D=4> constraints
[2021-07-26T21:07:45Z DEBUG plonky2::context_tree] | | | 867 gates to evaluate <R=101> GMiMCGate { ... } constraints
[2021-07-26T21:07:45Z DEBUG plonky2::context_tree] | | | 576 gates to evaluate BaseSumGate { num_limbs: 63 } + Base: 2 constraints
[2021-07-26T21:07:45Z DEBUG plonky2::context_tree] | | | 78 gates to evaluate ArithmeticExtensionGate constraints
[2021-07-26T21:07:45Z DEBUG plonky2::context_tree] | | | 288 gates to evaluate BaseSumGate { num_limbs: 31 } + Base: 2 constraints
[2021-07-26T21:07:45Z DEBUG plonky2::context_tree] | | | 115 gates to evaluate InsertionGate { vec_size: 3, _phantom: PhantomData }<D=4> constraints
[2021-07-26T21:07:45Z DEBUG plonky2::context_tree] | | | 26 gates to evaluate BaseSumGate { num_limbs: 2 } + Base: 2 constraints
[2021-07-26T21:07:45Z DEBUG plonky2::context_tree] | | | 633 gates to evaluate ReducingGate { num_coeffs: 21 } constraints
[2021-07-26T21:07:45Z DEBUG plonky2::context_tree] | | | 4 gates to evaluate ConstantGate constraints
[2021-07-26T21:07:45Z DEBUG plonky2::context_tree] | | | 11 gates to evaluate PublicInputGate constraints
[2021-07-26T21:07:45Z DEBUG plonky2::context_tree] | | | 2 gates to evaluate NoopGate constraints
[2021-07-26T21:07:45Z DEBUG plonky2::context_tree] | 16 gates to check vanishing and quotient polynomials.
[2021-07-26T21:07:45Z DEBUG plonky2::context_tree] | 13336 gates to verify FRI proof
[2021-07-26T21:07:45Z DEBUG plonky2::context_tree] | | 6 gates to recover the random betas used in the FRI reductions.
[2021-07-26T21:07:45Z DEBUG plonky2::context_tree] | | 4 gates to check PoW
[2021-07-26T21:07:45Z DEBUG plonky2::context_tree] | | 104 gates to precompute reduced evaluations
[2021-07-26T21:07:45Z DEBUG plonky2::context_tree] | | 330 gates to verify one (of 40) query rounds
[2021-07-26T21:07:45Z DEBUG plonky2::context_tree] | | | 95 gates to check FRI initial proof
[2021-07-26T21:07:45Z DEBUG plonky2::context_tree] | | | | 22 gates to verify 0'th initial Merkle proof
[2021-07-26T21:07:45Z DEBUG plonky2::context_tree] | | | | 33 gates to verify 1'th initial Merkle proof
[2021-07-26T21:07:45Z DEBUG plonky2::context_tree] | | | | 20 gates to verify 2'th initial Merkle proof
[2021-07-26T21:07:45Z DEBUG plonky2::context_tree] | | | | 20 gates to verify 3'th initial Merkle proof
[2021-07-26T21:07:45Z DEBUG plonky2::context_tree] | | | 34 gates to compute x from its index
[2021-07-26T21:07:45Z DEBUG plonky2::context_tree] | | | 32 gates to combine initial oracles
[2021-07-26T21:07:45Z DEBUG plonky2::context_tree] | | | 17 gates to verify FRI round Merkle proof.
[2021-07-26T21:07:45Z DEBUG plonky2::context_tree] | | | 10 gates to infer evaluation using interpolation
[2021-07-26T21:07:45Z DEBUG plonky2::context_tree] | | | 15 gates to verify FRI round Merkle proof.
[2021-07-26T21:07:45Z DEBUG plonky2::context_tree] | | | 10 gates to infer evaluation using interpolation
[2021-07-26T21:07:45Z DEBUG plonky2::context_tree] | | | 13 gates to verify FRI round Merkle proof.
[2021-07-26T21:07:45Z DEBUG plonky2::context_tree] | | | 10 gates to infer evaluation using interpolation
[2021-07-26T21:07:45Z DEBUG plonky2::context_tree] | | | 11 gates to verify FRI round Merkle proof.
[2021-07-26T21:07:45Z DEBUG plonky2::context_tree] | | | 10 gates to infer evaluation using interpolation
[2021-07-26T21:07:45Z DEBUG plonky2::context_tree] | | | 9 gates to verify FRI round Merkle proof.
[2021-07-26T21:07:45Z DEBUG plonky2::context_tree] | | | 10 gates to infer evaluation using interpolation
[2021-07-26T21:07:45Z DEBUG plonky2::context_tree] | | | 7 gates to verify FRI round Merkle proof.
[2021-07-26T21:07:45Z DEBUG plonky2::context_tree] | | | 10 gates to infer final evaluation using interpolation
[2021-07-26T21:07:45Z DEBUG plonky2::context_tree] | | | 8 gates to evaluate final polynomial
```

This bit corresponds to the single FRI query being shown:

```
[2021-07-26T21:07:45Z DEBUG plonky2::context_tree] | | 330 gates to verify one (of 40) query rounds
```

* Minor cleanup

* Address feedback
2021-07-26 16:21:14 -07:00
wborgeaud
1e5a503a14
Merge pull request #127 from mir-protocol/reducing_gate
Add `ReducingGate` to compute reductions by `alpha` of base field elements
2021-07-25 18:14:40 +02:00
wborgeaud
c16d93ab33 scaling.rs -> reducing.rs 2021-07-23 17:31:00 +02:00
wborgeaud
ca540a8475 Working fri_combine_initial 2021-07-23 17:29:31 +02:00
wborgeaud
19140e39b2 Update comment 2021-07-23 15:01:45 +02:00
wborgeaud
f325586beb Replace exp_from_complement_bits with simpler method 2021-07-23 14:58:41 +02:00
wborgeaud
6f8053cc37 Forgot to exponentiate from bits in computation of subgroup_x. Saves 80 gates. 2021-07-23 08:53:00 +02:00
wborgeaud
9a1c289f8e Merge branch 'main' into remove_acc_in_gmimc
# Conflicts:
#	src/gadgets/arithmetic.rs
2021-07-23 08:16:23 +02:00
Nicholas Ward
3612b9f05e Merge branch 'main' into order_bigint 2021-07-22 13:28:48 -07:00
wborgeaud
e87aa2c90b Renaming 2021-07-22 16:25:47 +02:00
wborgeaud
1d92191227 Make exp_complement_bits take an iterator to avoid cloning. 2021-07-22 16:18:13 +02:00
wborgeaud
c729a3c235 Remove all non-bits indices in the FRI verifier 2021-07-22 16:07:07 +02:00
wborgeaud
22fcc3bc06 Pass bits around 2021-07-22 15:10:55 +02:00
wborgeaud
be2e870aee PR feedback 2021-07-22 06:50:07 +02:00
Nicholas Ward
7f92a33964 cargo fmt 2021-07-21 13:05:40 -07:00
Nicholas Ward
1dd850b0e5 fixes 2021-07-21 13:05:32 -07:00