feat(optimizer): support external partition in virtual circuits #1187
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Benchmark
| Benchmark suite | Current: 2758060 | Previous: 426a261 | Ratio |
|---|---|---|---|
v0 PBS table generation |
53323126 ns/iter (± 3187870) |
61444122 ns/iter (± 639454) |
0.87 |
v0 PBS simulate dag table generation |
38013513 ns/iter (± 390494) |
38752536 ns/iter (± 1190408) |
0.98 |
v0 WoP-PBS table generation |
52478090 ns/iter (± 307768) |
54049522 ns/iter (± 3297729) |
0.97 |
This comment was automatically generated by workflow using github-action-benchmark.
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I think it could be great to have @rudy-6-4 review too |
| arg("macro_glwe_dimension"), arg("macro_internal_dim"), | ||
| arg("max_variance"), arg("variance")) | ||
| .doc() = "Definition of an external partition."; | ||
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| // ------------------------------------------------------------------------------// | ||
| // KEYSET INFO // |
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What about keygen using KeySetInfo instead of ProgramInfo? If it requires a lot of changes in the frontend, then we can think about having both.
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As mentionned at the end of our discussion, I thought it may incorrectly nudge the user into generating keysets from the virtual keyset info, which would yield a big keygen, while just a small subset would be needed for the circuit.
And thinking about it a bit more, I don't think it would work to use a superset of the necessary keyset on a circuit (nothing fancy, just that we index keys by number, and as such, we may incorrectly lookup keys).
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Make sense yeah. I'm just thinking how can we showcase the feature then... We just need a way to construct a keyset from a program info using pregenerated keys. If we had a big keyset (with more keys than what the circuit needs), we could have a method that takes the program info and the big keyset, and extract necessary keys with their appropriate index.
We can also simulate all this with a keygen for now, so it's not really necessary, but it will make a better demo with something in this direction.
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@BourgerieQuentin WDYT ?
| name, | ||
| macroLog2PolynomialSize, | ||
| macroGlweDimension, | ||
| macroInternalDim, |
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not sure if macroInternalDim have any use now or in the future !?
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Not sure how this is used, but it is needed to construct the external partition structure in the optimizer ...
| @@ -46,6 +46,11 @@ impl std::fmt::Display for ExternalPartition { | |||
| } | |||
| } | |||
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| pub struct PrePartitionDag { | |||
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If only for Viz could be in utils.
| @@ -122,33 +207,55 @@ pub fn generate_virtual_parameters( | |||
| &Some(p_cut), | |||
| PartitionIndex(0), | |||
| ) | |||
| .map_or(None, |v| Some(v.1)) | |||
| .unwrap(); | |||
| .unwrap() | |||
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could return a Result or Option CircuitKeys
| def test_generic_restriction_with_external(helpers): | ||
| """ | ||
| Test that compiling a module works. | ||
| """ | ||
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| dtype = tfhers.TFHERSIntegerType( | ||
| False, | ||
| bit_width=8, | ||
| carry_width=3, | ||
| msg_width=2, | ||
| params=tfhers.CryptoParams( | ||
| lwe_dimension=909, | ||
| glwe_dimension=1, | ||
| polynomial_size=4096, | ||
| pbs_base_log=15, | ||
| pbs_level=2, | ||
| lwe_noise_distribution=0, | ||
| glwe_noise_distribution=2.168404344971009e-19, | ||
| encryption_key_choice=tfhers.EncryptionKeyChoice.BIG, | ||
| ), | ||
| ) | ||
| config = helpers.configuration() | ||
| options = config.to_compilation_options().get_optimizer_options() | ||
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| generic_keyset_info = KeysetInfo.generate_virtual( | ||
| [ | ||
| InternalPartitionDefinition(3, 10.0), | ||
| InternalPartitionDefinition(5, 10.0) | ||
| ], | ||
| [ | ||
| dtype.external_partition_definition() | ||
| ], | ||
| options | ||
| ) | ||
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| parameters = { | ||
| "x": {"range": [0, 2**7], "status": "encrypted"}, | ||
| "y": {"range": [0, 2**7], "status": "encrypted"}, | ||
| } | ||
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| parameter_encryption_statuses = helpers.generate_encryption_statuses(parameters) | ||
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| def binary_tfhers(x, y, binary_op, tfhers_type): | ||
| """wrap binary op in tfhers conversion (2 tfhers inputs)""" | ||
| x = tfhers.to_native(x) | ||
| y = tfhers.to_native(y) | ||
| return tfhers.from_native(binary_op(x, y), tfhers_type) | ||
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| compiler = fhe.Compiler( | ||
| lambda x, y: binary_tfhers(x, y, lambda x, y: x + y, dtype), | ||
| parameter_encryption_statuses, | ||
| ) | ||
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| inputset = [ | ||
| tuple(tfhers.TFHERSInteger(dtype, arg) for arg in inpt) | ||
| for inpt in helpers.generate_inputset(parameters) | ||
| ] | ||
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| circuit = compiler.compile(inputset, config, keyset_restriction=generic_keyset_info.get_restriction()) | ||
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| compiled_keyset_info = circuit._module.keys.specs.program_info.get_keyset_info() | ||
| assert all([k in generic_keyset_info.secret_keys() for k in compiled_keyset_info.secret_keys()]) |
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