Add DCP-shardable FSDP2 optimizer state and portable resharding - #82

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thad0ctor wants to merge 57 commits into

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feat/dcp-resharding-main

Commits on Jul 13, 2026

Add platform-agnostic optimizer contracts
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9a5add9
Make native optimizer loads atomic
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4e2d967
Add canonical shard identity descriptors
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102b7f2
Add atomic post-sharding rebinding
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8e0bb97
Add explicit codebook process-group scopes
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750905a
Add exact-binding canonical state I/O
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ceeef2b
Add atomic optimizer state movement
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08af6ae
Merge branch 'main' into feat/platform-optimizer-contracts
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f415330
Add portable global-state foundations
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9a6e33b
Retain logical optimizer slot identities
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251ee71
Add portable state transport primitives
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81ced57
Add lossless native shard guards
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b3bed6f
Add symmetric portable state collectives
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599ba33
Preserve signed zero in portable momentum
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ec78af3
Make period-one state projection bit exact
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1aaf987
Add exact portable state semantics
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1397903
Add collective portable state I/O
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b078196
Add portable DCP persistence
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14279e9
Complete hybrid portability and state offload
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c3bb4b2
Type-validate OptimizerCapabilities and OptimizerChildContract contents
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7e2aaec
Compose hybrid training claims from both routed children
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6668940
Deepen fail-before-mutation snapshots in canonical and hybrid tests
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9f23f13
Assert persistent state values in offload failure-atomicity test
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1336281
Cover zero-length flattened shard in scoped codebook collectives
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7920078
Scope-agree checkpoint-resume period reuse before codebook collectives
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e73d4ac
Re-validate codebook scope agreement on every member together
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22e81cb
Include parameter storage identity in canonical import live token
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5aea07a
Add regression tests for scope-agreed decisions and import freshness
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b25756a
Synchronize hybrid step AMP and preflight failures across the codebook scope
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c0d6509
Cache layout forensics behind O(params) step tokens
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16410fa
Add layout-guard cost tests and microbenchmark
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af1a465
Run the offload readiness scan on every step
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56803c4
Clarify layout-guard and offload paragraphs in contract docs
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a9db94f
Cache the composite hybrid finalized-layout forensics behind O(local) step tokens
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4dee59c
Resolve value exports in the CI import smoke
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4cfb069
Run GPU test job on PRs to main with fail-fast timeout
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993ec96
Make GefenMuonHybrid.load_state_dict two-phase fail-before-mutation
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ba5e090
Revert "Run GPU test job on PRs to main with fail-fast timeout"
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Cover state offload and movement in the local GPU release gate
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6d6501d
Synchronize pre-collective step failures across the codebook scope
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c0e2fb3
Intersect composite checkpoint guarantees across children
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181c3ec
Bound non-contiguous portable clone scratch to the chunk budget
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006054f
Strengthen fail-before-mutation snapshots against in-place mutation
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5430974
Assert steady-state steps never recompute the manifest digest
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9134162
Use a race-free file:// rendezvous in the state-movement distributed test
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be797af

Commits on Jul 14, 2026

Commits on Jul 15, 2026

Commits on Jul 16, 2026