ePC inference solver for FabricPC - #47

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matthew_cedric/epc

Commits on Sep 9, 2026

Add first draft planning file for ePC integration to FabricPC
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b69ad04
Update plan following feedback from Cedric.
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0812b31
Revise design for graph unrolling to generalize the topological sort method with unroll degree argument. Enumerate ePC process implementation with framing like the existing backpropagation design p…
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0441966
Update ePC design plan to clarify graph unrolling behavior. Update initialization for `in_degree == 0` nodes to ensure correct state propagation. Remove unnecessary state forcing in solvers to supp…
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819e4a0
Clean up the revisions to final state of plan. Cut redundant text.
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9135e13
Design new node forward contract split into three parts and add the refactor to scope.
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fb4c33b
Refactor InferenceBase dispatch to classmethods and add segment hooks

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e620a21
Generalize the topological sort to an unrolled visit schedule

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47b028b
Split the node contract into predict / pair / energy

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d5981e9
Add EPCInference: error-parameterized predictive coding solver

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fe64dd4
Add InferenceSchedule: composable per-update solver segments

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857e531
Add ePC vs sPC resnet18 benchmark; demo builder takes an inference object

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1d75eea
Raise EPCInference's default eta_infer from 1e-3 to 1e-2

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90ad44a
Add support for pytest markers and enhance inference error handling
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47cdcca
update pending plan items
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8895d6f
Enhance ResNet-18 comparison script with convergence logging along training checkpoints.
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7b2eae3
Add backpropagation trainer option to ResNet-18 demo and update accuracy results of the ePC inference rate in the design file
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42cab16
Update ResNet-18 demo to use GELU activation and document backprop results
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e5de564
Enhance ResNet-18 demo with multiple trials support and ePC inference options
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4668ae5
Update inference parameters in documentation and demo for ePC solver
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5e47ad6
Add tests to prevent documentation drift from method signature defaults
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c440f98
Refactor training functions in ResNet-18 comparison. Update trainer tests for new node contract, replacing assertion energy >= 0 with a tolerance check.
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1df3f3a
Add make_tracked_probe function for optimized inference tracking
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8e044e9
Enhance MNIST cyclic graph with comparison between ePC, sPC, and composed inference solvers. Document ePC steps > 1 required for PC solution.
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7cbb9e2
Add ePC oracle design plan
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a4ffb20
revised ePC oracle plan and changed PC-regime crition to include lamda_max and discussion of stability issues
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b7aae89
Add linear-Gaussian PC oracle with exact equilibria and spectral diagnostics

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d653a50
Add EPCInference.error_energy, regime_label, and oracle-backed solver tests

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eccceac
Add scripts/epc_analysis.py: regime, equilibrium, spectra, stability analysis

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b2cd89d
Document the ePC backprop regime and stability bound at every touch point

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4b4bc4c
epc_analysis: seed the GPU sections like the demo's trial

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feaefec
Record lambda_max tracking: both resnet18 collapses follow eta*lambda_max > 2

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5419e7e
add reference
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c83be02
review the ePC oracle and analytical utilities
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7590268
update ePC tests to use new trainer gradient mean normalization API
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0cc9269
planing file for fixes to ePC training regime probe
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bedcb1a
revise design
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f726f92
make oracle design self-contained
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1140d71
update regime probe plan
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94fc8e2
Everything in deliverables A through H is implemented and verified except the pieces that need the `IterContext` trainer or the GPU control runs. Nothing is committed.
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dfe5732
update implementation status
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ab7bbdb
Added ePC settling fraction probe via trainer iteration callback. Resnet18 test runs and documented analysis.
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0a3aec5
consolidated four intermediate planning files into single design file and revision record. Updated resnet18 demo docstrings and results.
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692e49c
Update docstrings to explain the oracle generator and tests.
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de1b53e
Update resnet18 ePC results. Rewrite docstring for epc_analysis.py
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