Chunk 1.1

In this chunk, the assistant focused on deploying the recently completed PCE and synthesis fixes to the remote calibnet host to address the ongoing PoRep partition failures. The tasks involved assessing the remote build environment (finding the toolchain under the `theuser` user), syncing the source code via `rsync`, compiling the `cuzk-daemon` binary remotely, deploying it, and cleaning the stale PCE state (including the incomplete `pce-porep-32g.tmp` file) before restarting the service. The deployment successfully validated the core achievement of the previous fixes: the background PCE extraction for PoRep completed correctly, generating a circuit with the expected 328 inputs. This confirmed that the harmonization of `WitnessCS`, `RecordingCS`, and `ProvingAssignment` resolved the structural mismatches that had been causing crashes and incorrect witness generation in the PCE path. However, the random PoRep partition invalidity issue persisted. By analyzing the GPU worker logs, the assistant determined that this was a pre-existing bug unrelated to the PCE changes. The pattern of only the first two GPU-processed partitions succeeding pointed to a race condition in the partitioned GPU proving pipeline, likely stemming from concurrent device access. This diagnosis successfully isolated the remaining problem, distinguishing it from the synthesis and PCE consistency issues previously resolved, and clearly defining the next area of investigation.

The Deployment That Proved a Fix and Isolated a Bug: Validating Constraint System Harmonization on a Remote Proving Host 2635 words

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