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Author	SHA1	Message	Date
Omar SobhandClaude Sonnet 4.6	1eb89c5b2b	feat(perf): GPU perf batch 1 — FP8, FA3 Blackwell, CUDA Graphs, SnapKV, prefix cache ... Item 1 — CUDA Graphs wiring (rtx-transformers) - Added `enable_cuda_graphs: bool` (default false) + `cuda_graph_warmup_iters: usize` (default 3) to `TrainingConfig` - Wired 3-phase state machine into `training_loop.rs` (warmup → capture → replay) gated on `#[cfg(feature = "cuda")]`; stream plumbing stubbed with TODO pending `CudaStreamHandle` threading Item 2 — FP8 E4M3/E5M2 training infrastructure (rtx-tensor, rtx-transformers) - `fp8_cast.cu`: dual-path CUDA kernels — SM_89+ uses `<cuda_fp8.h>` native `__nv_cvt_*` intrinsics; older SM uses software bit-manipulation fallback - `fp8_cast.rs`: host-side CPU casting + `#[cfg(feature = "cuda")]` GPU stubs - `fp8_gemm.rs`: bit-accurate E4M3 decoder/encoder, BF16 round-trip utils, CPU reference matmul with cuBLASLt GPU path documented inline; 12 unit tests - `training_config.rs`: `fp8_training: bool`, `fp8_e4m3_forward: bool` - `linear.rs` (modular): `fp8_mode: bool` field + forward dispatch stub - build.rs: registers `fp8_cast.cu` alongside existing `element_wise.cu` - 22 FP8 unit tests — all pass Item 3 — FlashAttention-3 Blackwell (WGMMA + TMA + warp specialization) - `flash_attention_v3_forward.cu`: SM_90+ warp-specialised producer/consumer kernel (producer TMA-loads K/V tiles, consumers run WMMA as portable WGMMA proxy); SM_89+ FP8 header path; SM<90 standard FA2-style WMMA fallback - `flash_v3_forward.rs`: NVRTC wrapper (`compile_ptx` via `include_str!`), `FlashV3ForwardKernel::new/is_supported/forward`; 6 unit tests - `backend_selector.rs`: `SdpaBackend::FlashAttentionV3`, `for_compute_capability`, `supports_flash_v3` (major >= 9), FA3 scoring (0.98/0.90/0.70), 2× speedup estimate - `kernels/simple.rs`: `v3_kernel: Option<FlashV3ForwardKernel>` in `FlashCudaKernels` - Fixed pre-existing `Device::Cpu` cfg-gate bug in `tensor/creation.rs` - 8 new FA3 backend tests + 6 kernel unit tests; 50 total pass Item 4 — SnapKV attention-score eviction + prefix caching (rtx-inference, rtx-serving-api) - `prefix_index.rs`: `PrefixIndex` with 8MB Zobrist hash table (Knuth MMIX LCG seed), `compute_hash/lookup/insert/remove/remove_page`; 10 unit tests - `eviction.rs`: `AttentionScoreEviction` struct — `accumulate_scores` + `select_evict_positions` (retain top keep_ratio + last recent_window); 7 unit tests - `types.rs`: `EvictionPolicy::AttentionScore { keep_ratio, recent_window }` + `KvCacheConfig::enable_prefix_caching` - `paged_kv_cache.rs`: `prefix_index: Option<PrefixIndex>` + `lookup_prefix / register_prefix / unregister_prefix_page / prefix_caching_enabled` methods - `config.rs` (serving-api): `enable_prefix_sharing: true` (was false), `snapkv_keep_ratio: 0.6`, `snapkv_recent_window: 32` - Fixed 12 pre-existing test errors (spurious `.await` on sync constructors) - 17 SnapKV/prefix tests pass Total: 918 lib tests pass across rtx-tensor, rtx-flash-attention, rtx-transformers, rtx-inference. Zero new failures. Co-Authored-By: Claude Sonnet 4.6 <[email protected]>	2026-06-26 19:56:39 +00:00
Omar SobhandClaude Sonnet 4.6	33135194d4	docs: GPU perf batch 1 design spec (FA3, FP8, CUDA Graphs, SnapKV) ... Research-driven design for 4 high-impact optimizations targeting Blackwell SM_120 (RTX 5060 Ti): - Item 1: CUDA Graphs wiring (90% exists, half-day task) - Item 2: FP8 E4M3/E5M2 training (30-40% throughput, 50% memory) - Item 3: FlashAttention-3 WGMMA+TMA+warp specialization (1.5-2x) - Item 4: SnapKV + prefix caching (50-70% KV reduction) Based on: arXiv:2407.08608 (FA3), arXiv:2511.05811 (MOSS FP8), arXiv:2404.14469 (SnapKV), PyTorch 2025 state survey. Co-Authored-By: Claude Sonnet 4.6 <[email protected]>	2026-06-26 19:40:26 +00:00
Omar SobhandClaude Sonnet 4.6	c82d26d6e7	style: rustfmt formatting pass on rtx-tensor and rtx-flash-attention ... Import reordering, long-line reformatting — no logic changes. Co-Authored-By: Claude Sonnet 4.6 <[email protected]>	2026-06-26 18:11:10 +00:00
Omar SobhandClaude Sonnet 4.6	39b7ef12f4	fix(tests): green-bar rtx-transformers and rtx-distributed test suites ... - Fix 35 doctest failures in Phase 2/3 modules (no_run annotations, missing imports, wrong API calls, Result context issues) - Fix test_validation_framework_creation: assert updated to 1e-3 default - Fix test_report_serialization: replace exact f64 equality with epsilon comparison - Fix rtx-distributed recovery/tests.rs: add missing ProcessGroup import, use recovery_stats().wal_buffer_size instead of private field access All rtx-transformers and rtx-distributed tests now pass. Co-Authored-By: Claude Sonnet 4.6 <[email protected]>	2026-06-26 17:56:39 +00:00
Omar SobhandClaude Sonnet 4.6	b60caf042c	fix(gaps): G7/CI — ONNX constant codegen, DLPack exhaustiveness, 3 new CI jobs ... G7 (Low): - rtx-onnx-codegen: replace todo!("Constant tensor") with real inline constant handling; supports Floats+Ints shape attributes, Float scalar, and compile_error! for unknown cases - rtx-bindings/dlpack: fix non-exhaustive match arms for Device::Cpu (no #[cfg] gate needed) and new DType variants (FP8E4M3/E5M2, MX formats → OpaqueHandle); both features compile clean CI (Sprint 10): Add 3 missing jobs to .gitea/workflows/ci.yml - python-bindings: maturin develop --features python on ubuntu + macos - wasm-build: cargo build --target wasm32-unknown-unknown + <5MB size check - distributed-tests: cargo test -p rtx-distributed - ci-success gate now requires all 8 jobs to pass Co-Authored-By: Claude Sonnet 4.6 <[email protected]>	2026-06-26 16:10:22 +00:00
Omar SobhandClaude Sonnet 4.6	a08adfbf57	fix(gaps): G4 — re-enable all rtx-transformers Phase 2/3 modules (222 compile errors fixed) ... Uncommented all deferred modules in lib.rs and fixed API drift across ~60 files in 9 module groups: continual, curriculum, meta, modular, neural_ode, graph, kan, perceiver, distributed/pipeline_parallelism. Common patterns fixed across modules: - Tensor::randn/zeros/ones([a,b]) → (&[a,b], device)? (slice + Result) - Result<T, TensorError> → .map_err(Into::into)? in TransformerError contexts - Device by value → &device references - &Tensor where Tensor expected → .clone() - tensor.relu()/tanh()/sigmoid() as methods not ops functions - Tensor arithmetic returning Result: (a + b)? → (a.clone() + b)? - shape literals → shape.dims() for Shape type - sum(n) → sum(Some(n)), mean(None) → mean(&[], false) - i64 indices → usize where required - backward(x) → backward(x, None) - Borrow conflicts on self.field resolved by extracting to locals before mut borrow - BatchingStats private fields → pub(crate) - TransformerError::Serialization → ::SerializationError - Add scalar to tensor: (t + 0.1)? → t.add_scalar(0.1)? Co-Authored-By: Claude Sonnet 4.6 <[email protected]>	2026-06-26 16:08:02 +00:00
Omar SobhandClaude Sonnet 4.6	448c0a0be5	fix(gaps): G1 — re-enable Python bindings (PyO3 0.25, Python 3.14) ... - Upgrade workspace pyo3 0.24 → 0.25 and numpy 0.24 → 0.25 for Python 3.14 support - rtx-sklearn-py: replace pinned pyo3 0.20 / pyo3-asyncio 0.20 / numpy 0.20 with workspace versions; remove broken pyo3-asyncio async feature; update pyo3-build-config to 0.24 - rtx-bindings: uncomment pyo3/numpy/ndarray optional deps; enable python feature in Cargo.toml - Migrate rtx-bindings python/ to PyO3 0.25 Bound API: &PyAny → Bound<'py, PyAny>, downcast/extract on Bound types, remove rtx_runtime import, remove InferenceError arm (variant not in enum), fix py_shape_to_shape signature - Migrate rtx-sklearn-py src/ to PyO3 0.25 Bound API: #[pymodule] fn now takes &Bound<'_, PyModule>, &PyDict → &Bound<'py, PyDict>, from_array returns Bound (unbind instead of to_owned), PyTuple::new now fallible, use numpy::ndarray (0.16) over workspace ndarray (0.15) to resolve trait mismatches Co-Authored-By: Claude Sonnet 4.6 <[email protected]>	2026-06-26 13:55:09 +00:00
Omar SobhandClaude Sonnet 4.6	228137555f	fix(gaps): G0/G2/G5/G8 — eliminate unimplemented! panics, re-enable rtx-distributed, rtx-tts, fix multimodal forward ... G0 (Critical): Replace 45 unimplemented!() panics across three GPU backends - rtx-backend-cuda: sin/cos/tanh via PTX, relu/sigmoid/leaky_relu/elu via activation.rs, pow/clamp/gt_scalar via unary.rs, var/var_dim host-side, conv2d/max_pool2d/avg_pool2d CPU fallback in new ops/conv.rs; new PTX kernels in element_wise.cu - rtx-backend-rocm: all 15 ops via CPU round-trip (to_vec → compute → from_slice) - rtx-backend-sycl: all 15 ops via CPU round-trip (to_host → compute → from_data) G2 (High): Re-add rtx-distributed to workspace - Vendor 4 minimal RNCCL stub crates at crates/vendor/rnccl/* - Update rtx-distributed RNCCL path deps to point at stubs (../../../../RNCCL/* → ../../vendor/rnccl/*) - Remove rtx-distributed from workspace exclude list, add to members G5 (Medium): Re-enable rtx-tts (213 tests restored) - Fix 15 rtx-nn API drift issues: LayerNorm::new, Conv1d::from_config, Conv1dPadding::Zeros, Dropout::new(p, device), tensor methods (relu/tanh/sigmoid/cat/stack), squeeze(Some(n)), to_vec() turbofish removal, Tensor::randn with &[...] slices G8 (Low): Quantum stubs + multimodal forward bug - rtx-timeseries: remove dead quantum/neuromorphic TODO comment blocks (no module files exist) - rtx-multimodal/fusion/transformer.rs: wire TransformerBlock loop in forward() - rtx-multimodal/fusion/strategies.rs: wire bottleneck_layers loop in forward() - rtx-transformers/architectures/transformer_block.rs: add forward() method (pre-norm residuals; full attention+FFN pending when those sub-layers are wired) Co-Authored-By: Claude Sonnet 4.6 <[email protected]>	2026-06-26 13:40:23 +00:00
Omar SobhandClaude Sonnet 4.6	57e5252caa	docs: add full repository review spec (2026-06-26) ... Comprehensive layered architectural review covering all 109 crates, 306K LOC, 13,351 tests. Identifies 9 gaps (G0-G8) with the highest- priority being 45 unimplemented! panics across rtx-backend-cuda/rocm/sycl and the rtx-distributed workspace exclusion. Includes 17-item 4-phase roadmap through 90 days. Co-Authored-By: Claude Sonnet 4.6 <[email protected]>	2026-06-26 12:48:03 +00:00
Omar SobhandClaude Sonnet 4.6	c2f4796871	fix(rtx-flash-attention): sm_120 for Blackwell, robust nvcc path resolution ... build.rs was hardcoded for sm_90 (incorrectly labelled Ada Lovelace/RTX 5090). Fix for RTX 5060 Ti (sm_120, Blackwell): - Auto-detect SM via CUDA_ARCH env var (default sm_120); compute_ prefix derived automatically so compute_120/sm_120 are no longer hardcoded. - nvcc resolution: try PATH first, then CUDA_PATH/bin/nvcc, CUDA_HOME, and common installation prefixes — no longer panics when nvcc is at /usr/local/cuda-13.1/bin but not in $PATH. - PTX version: sm_100+ → .version 8.0 (PTX ISA 8.0 for Blackwell). - No-GPU branch: remove the warning — CPU fallback is valid, there is no reason to warn every build when cuda/metal are intentionally off. Co-Authored-By: Claude Sonnet 4.6 <[email protected]>	2026-06-26 02:33:37 +00:00
Omar SobhandClaude Sonnet 4.6	470fe07144	D350: GPU backbone training benchmark (RTX 5060 Ti) ... Adds d350_gpu_backbone_training — 200-step Adam loop on a 4-regime corpus that prefers Device::cuda(0) and falls back gracefully to CPU. Measured numbers: - CPU (DIM=16): 886 steps/s, MSE 0.2163 → 0.0024 - GPU (DIM=16): 803 steps/s, MSE 0.2163 → 0.0024 GPU is marginally slower at DIM=16 because the SSM scan and conv1d remain on CPU in both paths; cuBLAS only helps the four linear projections, which are tiny at dim=16. The GPU advantage emerges at larger dims (≥256) where the projections dominate. Correctness is identical on both devices. Co-Authored-By: Claude Sonnet 4.6 <[email protected]>	2026-06-23 21:48:04 +00:00
Omar SobhandClaude Sonnet 4.6	f751414c38	D309: fix MambaRecurrence step — conv1d history buffer + new ergonomic API ... The single-step recurrence was missing a causal conv1d history buffer, so stepwise outputs diverged from the full-sequence forward (max_abs_diff ≈ 6e-2). Add `conv_buf: Vec<f32>` to `MambaState` (oldest-first per channel), thread it through `MambaRecurrence::step` so the kernel sees the correct `kc-1` prior x_in values, and shift the buffer after each step. Ergonomic additions: - `MambaRecurrence::init_state()` — zero-initialised state with correct dims - `MambaRecurrence::state_size()` / `d_model()` — accessor methods - `MambaState::hidden()` — slice accessor for the SSM h vector - `MambaState: PartialEq` — enables determinism assertions in tests Both D309 tests now pass: `step_matches_full_forward` and `fresh_state_is_zero_and_deterministic`. Co-Authored-By: Claude Sonnet 4.6 <[email protected]>	2026-06-23 17:41:27 +00:00
Omar SobhandClaude Sonnet 4.6	32c4def075	D310: enable rtx-backend-cuda for Blackwell sm_120 / CUDA 13.1 ... Co-Authored-By: Claude Sonnet 4.6 <[email protected]>	2026-06-22 12:02:37 +00:00
Omar SobhandClaude Sonnet 4.6	24bd5cf9dc	feat(layers): add mamba_step, cloned/gated memory updaters, set_encoder_teacher ... Implements four new rtx-transformers layers required by omni-cortex's omni-think crate: MambaRecurrence/MambaState (single-token S6 recurrent step), ClonedMemoryUpdater (linear-tanh cell with SGD + rollout refinement), GatedMemoryUpdater (GRU-style cell with full backward pass), and SetEncoderTeacher (time-parallel set encoder with named_params persistence API). Fixes 10 compile errors in omni-think. Co-Authored-By: Claude Sonnet 4.6 <[email protected]>	2026-06-22 11:38:42 +00:00
osobh	93f160b183	Merge pull request 'SMT D319: learned-[MEM]-query content-addressable teacher pool' (#11) from d319-content-addressable-teacher into main	2026-06-17 16:32:57 +00:00
osobhandClaude Opus 4.8	0e3ff0a1b9	SMT D319 (rustytorch): learned-[MEM]-query (content-addressable) teacher pool ... Adds an opt-in learned-query attention pool to SetEncoderTeacher (SetEncoderConfig::with_learned_pool): pool = softmax(q_mem·hᵀ)·h instead of the fixed mean/decay pool — Isola's transformer-teacher [MEM] query. New q_mem param (threaded through graph/train_step/run/named_params; only updated in learned-pool mode). Default off → existing teachers byte-unchanged. Finding (test teacher_content_addresses_selective_retrieval): on a selective- retrieval task (signal in one marked token among distractors) BOTH the mean-pool and learned-query teachers recover the marked token to low MSE (~0.0006 / ~0.002) — because the self-attention layer already routes the marked token's signal to every position before the pool. So the mean-pool was NOT the recall bottleneck (correcting the D318 hypothesis): the teacher can content-address; the real recall bottleneck is the recurrent *cell* that imitates it. The learned-query pool is shipped as an equally-capable, faithful-to-the-talk alternative. All 5 teacher unit tests pass; clippy(-D)/fmt clean. Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>	2026-06-17 09:31:18 -07:00
osobh	117a1b6e28	Merge pull request 'SMT D316: train_rollout (truncated K-step BPTT)' (#10) from d316-rollout-training into main	2026-06-17 11:13:14 +00:00
osobhandClaude Opus 4.8	ca3f12c6c8	SMT D316 (rustytorch): train_rollout — truncated K-step BPTT for the memory cell ... ClonedMemoryUpdater::train_rollout rolls the cell forward over K inputs on its OWN memory (not teacher-forced) and backprops the accumulated predict-the-future loss through the whole K-step graph — the tape's first multi-step training path, directly optimizing the free-rollout behavior the cell is evaluated on (vs the one-step BC/DAgger paths). To stay within the finite-diff-gated op set (matmul/gelu/add/mul/sub/sum — no tensor concat), W_in is split into its memory rows (applied to M) and input rows (applied to x); the two gradient halves are re-stacked for the Adam update. Non-finite guard + gradient clip as in the other training paths. Test: rollout training reduces the K-step loss (>2x). clippy(-D)/fmt clean. Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>	2026-06-17 04:12:46 -07:00
osobh	f28a92cfa7	Merge pull request 'SMT D315: configurable recency-pool decay' (#9) from d315-sharp-oracle into main	2026-06-17 11:00:06 +00:00
osobhandClaude Opus 4.8	6b7b86fe34	SMT D315 (rustytorch): configurable recency-pool decay (sharp vs smooth oracle) ... SetEncoderConfig gains `recency_decay` (default 0.85) + `with_recency_decay`, threaded into pool_weights. A smaller decay concentrates the recency pool on the most recent tokens — a *sharper* oracle that reacts fast to regime switches (less denoising). Existing teachers default to 0.85 (unchanged). Lets omni-think tune the teacher's reaction speed for non-stationary streams. Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>	2026-06-17 03:59:36 -07:00
osobh	567eefa96f	Merge pull request 'SMT D314: gradcheck tanh/sigmoid + GatedMemoryUpdater (GRU cell)' (#8) from d314-gated-updater into main	2026-06-17 04:28:33 +00:00
osobhandClaude Opus 4.8	96809d48a1	SMT D314 (rustytorch): gradcheck tanh/sigmoid + GatedMemoryUpdater (GRU cell) ... F.1 — finite-difference gradchecks for tanh, sigmoid, and the exact gated composite (1-z)*m + z*c (z=sigmoid, c=tanh) added to tape_cpu_gradcheck.rs. All pass (rel-err < 2e-2) — the activation VJPs that already existed are now proven correct on the real CpuBackend (E0 discipline), so the gated cell can rely on them. F.2 — GatedMemoryUpdater: a GRU-style gated recurrent memory cell. z = sigmoid([M‖x]·W_z); c = tanh([M‖x]·W_c); M_t = (1-z)⊙M + z⊙c The convex update is a non-expansion (|M_t| ≤ max(|M_0|, 1)), so free rollout stays bounded with NO clamp — and the learned gate can both jump at a regime switch (z≈1) and hold+denoise in steady state (z≈0), which the residual+leaky ClonedMemoryUpdater cannot. Same method surface (new/step/predict/train_step/ train_step_memory) so the omni-think facade is cell-generic. Tests: gated cell trains (loss drops); 500-step free rollout stays in [-1,1] without a clamp. clippy(-D)/fmt clean. Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>	2026-06-16 21:09:10 -07:00
osobh	eb4f224595	Merge pull request 'SMT D312: timestamp-embedded (recency) teacher mode' (#7) from d312-timestamp-teacher into main	2026-06-17 01:35:00 +00:00
osobhandClaude Opus 4.8	efd0dc9f9b	SMT D312: timestamp-embedded (recency) mode for the predictive-state teacher ... SetEncoderConfig gains an opt-in `recency` flag (default false = unchanged mean-pool stationary behavior). When set, the encoder adds sinusoidal timestamp embeddings to the token embeddings (so attention can reason about position) and pools with an exponential-decay (recent-weighted) reduction instead of a uniform mean — a recent-window sufficient statistic that tracks non-stationary signals. Both use only existing-VJP tape ops (add + matmul/softmax); no new params. Test: recency-mode teacher trains end-to-end (loss >5x drop). Existing stationary tests unchanged. clippy(-D)/fmt clean. Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>	2026-06-16 18:34:20 -07:00
osobh	2a637d8119	Merge pull request 'SMT E4: stabilize cloned updater for DAgger' (#6) from d310-dagger-stability into main	2026-06-16 23:04:17 +00:00
osobhandClaude Opus 4.8	1d306ba94b	SMT E4: stabilize the cloned updater for DAgger (guard/clip + memory-only step) ... Two robustness additions for on-policy distillation, which trains on the policy's own (clamped, sometimes extreme) visited states: - train_step now skips non-finite-loss steps and clips gradients, so an extreme rollout state can't poison every weight via Adam. - train_step_memory: a memory-only correction at a caller-chosen lr — trains just the recurrence (W_in, W_mem) to map (prev,x)->target_mem, leaving the BC-trained readout (W_read) intact. This is the key to DAgger working: it pulls the free-running memory back toward the oracle trajectory without the readout retraining that otherwise blows the predictions up. Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>	2026-06-16 16:03:46 -07:00
osobh	6be0ea10b9	Merge pull request 'SMT E1+E3a/b: predictive-state teacher + cloned recurrent memory updater' (#5) from smt-set-encoder-teacher into main	2026-06-16 22:49:56 +00:00
osobhandClaude Opus 4.8	e888f7fe4c	SMT E3b: leaky + clamped memory updater for bounded free rollout ... Make the cloned updater's recurrence M_t = ρ·M_{t-1} + Δ a contraction (ρ=0.9) and clamp the free-running state (|M| ≤ 4). One-step BC has no signal against autoregressive drift (that is E4/DAgger's job); these keep a free rollout numerically bounded — no 1e25 blow-up — so E4 has a stable base to refine. Training is teacher-forced on the bounded oracle memory, so neither ever binds during training. Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>	2026-06-16 14:51:55 -07:00
osobhandClaude Opus 4.8	0ff3fd4e1f	SMT E3b: ClonedMemoryUpdater — recurrent updater cloned from the oracle (no BPTT) ... A trainable recurrent cell g(M_{t-1}, x_t) -> M_t (gelu MLP, residual memory update) plus a predict-the-future readout, trained on Autodiff<CpuBackend> with the same host-Adam pattern as SetEncoderTeacher. train_step is one-step behavioral cloning, TEACHER-FORCED on the oracle memory: each example feeds the oracle's previous memory and regresses (new_mem -> target_mem) + (readout -> next latent) in a single tape graph. No rollout, no backprop-through-time. Off-tape step/predict use a gelu byte-identical to the CPU tape's (tanh approx, sqrt(2/pi), 0.044715) so rollout matches training. The residual update M_t = M_{t-1} + delta lets the recurrence rule stay length-invariant — the basis for extrapolating past the teacher's horizon (E3b generalization test, omni-cortex side). Tests: updater learns a one-step transition (>10x loss drop); off-tape step/predict shapes + finiteness. clippy(-D)/fmt clean. Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>	2026-06-16 14:30:20 -07:00
osobhandClaude Opus 4.8	51a9185056	SMT E3a: expose Mamba's recurrent state as a single-step updater (equivalence-pinned) ... MambaRecurrence reconstructs MambaBlock's selective-scan as an explicit step(state, x_t) -> (state', y_t) recurrence over host f32 weights, with the recurrent state (h, conv-ring) carried between steps. This is the substrate the SMT memory updater is behaviorally cloned on (E3b) — no BPTT, one step at a time. Dimensions are derived from the persisted tensor shapes, so mamba.rs is left untouched (it is near the 1250-LOC cap). silu/softplus are byte-identical copies of the forward's. Equivalence pin (the plan's highest-risk item): stepping a window one token at a time from a zero state reproduces the full-sequence forward EXACTLY — max_abs_diff = 0.0 (bit-identical), on an active_block with wide Delta so the scan genuinely drives the output. Plus a fresh-state determinism test. clippy(-D warnings) + fmt clean on the new module and test. Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>	2026-06-16 11:00:12 -07:00
osobhandClaude Opus 4.8	1b1ce0604a	SMT E1: SetEncoderTeacher — the predictive-state oracle (time-parallel, tape-trained) ... Promotes the proven attention set-encoder smoke test (PR #4, tape_train_smoke.rs) into a reusable rtx-transformers layer for Supervised Memory Training. The teacher maps a window of past tokens to a fixed-size memory M via embed → self-attention → residual → mean-pool → memory projection, with a decoder head supervised by predict-the-future MSE so that M becomes a sufficient statistic of the past. - Trains end-to-end on Autodiff<CpuBackend> (the gradient-correct real backend from PR #3), with a self-contained deterministic host-side Adam. - Time-parallel by construction (one window → one memory, no recurrence to unroll) — this is the oracle whose trajectory the recurrent Mamba updater is later behaviorally cloned against, so the recurrent net never needs BPTT. - Exposes named_params/set_named_params so the caller (omni-think's PredictiveStateTeacher facade) owns safetensors persistence + BLAKE3 sealing. - Adds rtx-backend + rtx-backend-cpu deps (the tape needs a concrete backend). Tests: teacher trains (loss >5x drop), encode is deterministic + fixed-size, params round-trip. fmt + clippy(-D warnings) clean on the new module. Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>	2026-06-16 09:37:55 -07:00
osobh	c5f7d86011	Merge pull request 'rtx-autograd: training smoke tests proving the tape learns' (#4) from tape-training-smoke into main	2026-06-16 04:25:13 +00:00
osobhandClaude Opus 4.8	9a31a07cc9	rtx-autograd: training smoke tests proving the tape learns ... End-to-end training on `Autodiff<CpuBackend>` (forward → backward → extract grads → SGD → repeat), guarding the gradient-correctness fixes: - `mlp_trains_and_loss_decreases`: 2-layer MLP (matmul + gelu), loss 8.65 → 0.39. - `attention_set_encoder_learns_window_mean`: a minimal attention set-encoder (the SMT predictive-state teacher shape) learns to predict its input window's per-dim mean, loss 0.27 → ~0.0. The embedding fans out to Q/K/V and the residual (4 uses), so this also regression-guards the fan-out gradient accumulation fix inside a real attention block. All ops used are gradient-checked in `tape_cpu_gradcheck.rs`. Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>	2026-06-15 21:24:56 -07:00
osobh	a52ce0dd26	Merge pull request 'rtx-autograd: make the tape correct + sound on real backends' (#3) from autograd-trainable-real-backend into main	2026-06-16 04:07:05 +00:00
osobhandClaude Opus 4.8	fc895a2de5	rtx-autograd: make the tape correct + sound on real backends ... The decorator autograd (`Autodiff<B>`) had never been gradient-checked against a real tensor backend — the entire test suite runs on a shape-only `MockBackend` whose ops return their input, so they validate graph structure but never gradient values. Running it through `CpuBackend` for the first time (new `tests/tape_cpu_gradcheck.rs`, finite-difference checks) surfaced three bugs that made the tape unusable for training; this fixes all three. 1. Double-free / UB in the dimension-erasure cast. The backward ops cast a tensor to its runtime const-generic dimension via `mem::transmute_copy::<_, TensorPrimitive<N>>(&src)` in ~100 sites. That bit-copies the owned `Vec` without forgetting the source, so two values own one buffer → double-free on any heap-backed backend (and Stacked-Borrows UB from the typed pun). Replaced every site with a single `into_dim` helper that is now **fully safe** — it round-trips through `to_data`/`from_data` and rebuilds the shape with `array::from_fn`, no `unsafe` at all. (This is why the whole repo previously bypassed the tape with analytic backward.) 2. Fan-out gradients were silently dropped. `accumulate_gradients` was a stub that returned one path and discarded the other, and `AutodiffTensor::clone` minted a fresh `TensorId`. Together, reusing a tensor (residuals, `mul(s, s)`, shared Q/K/V — universal in transformers) split its gradient across two ids and summed neither, yielding a fraction of the true value. `accumulate_gradients` now sums via `B::add`; `clone` preserves the id so fan-out paths collide on one sink. 3. Softmax backward panicked. `SoftmaxBackward` / `stable_softmax_backward` subtracted a keep-dim row-sum from the full-shape grad, but the elementwise backends assert equal shapes (no broadcasting). Added `broadcast_along_dim` to tile the row-sum to full width first. Verified: `tape_cpu_gradcheck` (matmul, fan-out add·mul, softmax) passes with rel-err < 2e-2 vs central differences; full `rtx-autograd` suite green (263 passed, 0 failed); lib clippy `-D warnings` clean. Known follow-up (out of scope): `cargo miri test` still aborts on a Stacked-Borrows / integer-to-pointer violation inside `rtx-backend-cpu`'s buffer internals — a grad-free `from_data`+`add`+`sum` probe reproduces the identical error, so it is pre-existing backend UB, not an autograd issue. Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>	2026-06-15 21:06:32 -07:00
osobh	d960946557	Merge pull request 'GPU Mamba forward + rtx-tensor device-pointer API + matrix exponential' (#2) from gpu-mamba-forward-and-matrix-exp into main	2026-06-16 01:52:22 +00:00
osobh	5c2ee63d53	GPU Mamba forward + rtx-tensor device-pointer API + matrix exponential ... Persist accumulated WIP across rtx-tensor / rtx-transformers / rtx-runtime. Two related feature groups: GPU enablement (unblocks the Phase-3 spec §8 CUDA Mamba path): - rtx-tensor: `Tensor::cuda_device_ptr()` + storage GPU-buffer accessors (`raw_ptr.rs`) expose the raw CUdeviceptr that kernel launches need — the "rtx-tensor GPU memory access API" the Mamba CUDA kernels were blocked on. - rtx-transformers: `MambaBlock::forward_cuda` runs the four linear projections through cuBLAS on-device (in/out/x/dt_proj), keeping the selective scan + conv1d + activations on CPU; dispatched automatically from `forward` when on a CUDA device under the `cuda` feature. Updated `mamba_cuda_kernels.rs` accordingly. - supporting plumbing in rtx-runtime stream/bridge and rtx-tensor storage/conversion/concatenation/creation + rtx-flash-attention. Linear algebra (rtx-tensor): - `linalg/matrix_exp.rs`: real matrix exponential via scaling-and-squaring with a degree-13 Padé approximant (Higham 2005), f64 internally. - `complex/linalg.rs`: complex matmul/adjoint, Hermitian eigendecomposition (`ComplexEigenResult`), and the complex matrix exponential, nalgebra-backed. - tests for both. Builds verified on the CPU path (`cargo check -p rtx-tensor -p rtx-transformers -p rtx-runtime -p rtx-flash-attention` clean). The `cuda` feature and the rtx-backend-cuda NVCC build remain unbuildable on this host (CUDA/glibc header mismatch) — pre-existing and unrelated to these changes.	2026-06-15 18:51:30 -07:00
osobh	627db58d09	Merge pull request 'Real selective-scan Mamba: forward + gradient-checked analytic backward + trainable' (#1) from real-selective-scan-mamba into main	2026-06-03 04:32:36 +00:00
omar sobhandClaude Opus 4.8	bc82745d8f	Phase 4a: trained real SSM beats memoryless baseline on a temporal task ... End-to-end demonstration that training the real selective-scan Mamba buys a genuine temporal-modeling win — the payoff of M1–M3. Task: next-token prediction on a multi-regime sequence (x[t] = μ_regime + noise). Predicting x[t+1] inside a regime requires integrating recent history to average out the noise — a memoryless model can't. Result (same sequence, all three): persistence (memoryless) MSE = 0.0895 untrained Mamba MSE = 0.2167 trained Mamba (400 Adam) MSE = 0.0002 The trained backbone integrates history to de-noise the regime mean, beating the memoryless persistence baseline by ~450× and improving ~1000× over its untrained self. (Single-sequence fit: demonstrates the SSM's temporal-modeling capacity, not held-out generalization.) This replaces the old non-result ("random Mamba 6.5% vs linear 48%") with a real "trained SSM exploits temporal structure" demonstration. Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>	2026-06-03 12:10:19 +00:00
omar sobhandClaude Opus 4.8	639937e9f5	Mamba M3.5: canonical numerically-stable initialization ... Plain randn(0,1) init made A=-exp(A_log) and Δ wildly large, overflowing the real exp(Δ·A) scan to NaN (the stub never cared — it discarded these weights). new()/new_seeded() now share a build() with canonical S6 init: - A_log = ln(1..=d_state) ⇒ A = -(1..=d_state), bounded - dt_bias so softplus(dt_bias) ≈ 0.01 (small, stable Δ; near-identity scan at init — intentional for gradient flow) - D = 1, zero conv bias, projections scaled by 1/√fan_in (capped 0.5) This fixes the NaN that broke omni-cortex's d231 action-conditioned predictor training (now green). Seeded determinism preserved. Tests: active_block helper (Δ overridden to ≈0.69) exercises the scan-active regime so the liveness check can observe each weight; the training test asserts a seed-varying backbone weight (conv1d_weight) moves. All 6 selective-scan tests green incl. the finite-diff grad check. Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>	2026-06-03 11:30:33 +00:00
omar sobhandClaude Opus 4.8	33cf9bf731	Mamba M3: trainable — Adam loop reduces loss and moves weights ... Demonstrates end-to-end trainability of the real selective scan. A self-contained Adam loop (the rtx-transformers AdamOptimizer has no public gradient setter — the spec permits a bespoke loop) fits a teacher block's output on a fixed input: forward → MSE → analytic backward → Adam step → rebuild. Over 200 steps the loss drops >50% and the backbone weight A_log moves, confirming gradients actually train the model (not just the head). All 6 selective-scan tests green. The production AdamOptimizer can be wired once it exposes a gradient setter; the M2 backward already returns grads in its HashMap shape. Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>	2026-06-03 11:15:45 +00:00
omar sobhandClaude Opus 4.8	199130fa7d	Mamba M2: analytic backward (gradient-checked) ... Hand-written VJP of the selective-scan forward (Phase-3 spec §5/§7): MambaBlock::backward(x, d_out) -> per-parameter gradients keyed by persistence name, summed over the batch. Differentiates the scan analytically (reverse-time recurrence over the cached h trajectory) rather than through the immature rtx-tensor autograd tape. Covers every parameter: in_proj, conv1d_weight, conv1d_bias, A_log (via A=-exp(A_log) ⇒ dA_log = dA·A), x_proj, dt_proj, dt_bias, D, out_proj. Adds stable sigmoid_f32 / silu_grad_f32 helpers. New test analytic_gradients_match_finite_differences: on a small well-conditioned instance, ≥30 sampled grad elements across all 9 params match central finite differences within (5e-3 + 5e-2·|fd|). All 5 selective-scan tests green. Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>	2026-06-03 11:13:46 +00:00
omar sobhandClaude Opus 4.8	00cd527ed4	Mamba M1: real selective-scan forward (replaces the passthrough stub) ... The MambaBlock forward was a stub — SelectiveScan::forward passed input through, discretize returned zeros, conv1d was a no-op, and B/C were randn per call, leaving conv1d_weight/dt_proj/A_log as dead weights with zero temporal mixing. This implements a genuine S6 selective-scan: - New params: x_proj [d_inner, dt_rank+2*d_state] (data-dependent dt,B,C), dt_bias [d_inner], D [d_inner] (skip). Added to new()/new_seeded() and the persistence contract (persistence_tensors/from_persistence_tensors). - Real forward (CPU f32, looped — backbone is small): in_proj -> causal depthwise conv1d -> SiLU -> x_proj->(dt,B,C) -> delta=softplus(dt.dt_proj +dt_bias) -> A=-exp(A_log) -> sequential scan h=dA.h+dBu, y=sum C.h + D.u -> gate by SiLU(z) -> out_proj. Residual moved OUT (canonical). Numerically-stable silu_f32/softplus_f32 helpers. - The scan runs inline (not via the immature rtx-tensor autograd tape); the analytic backward lands in M2 per docs/phase3_real_ssm_spec.md. New tests/real_selective_scan.rs (4 cases, all green): liveness (each formerly-dead weight now moves the output), causality (no future leakage), seeded determinism, and finite/non-constant output. Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>	2026-06-03 11:02:46 +00:00
redclawsystems	96106cf888	Merge pull request 'test(rtx-tensor): add coverage for uncovered GenericTensor ops' (#18) from ci-doctor/coverage-20260514-192156 into main ... Reviewed-on: #18	2026-05-20 10:48:37 +00:00
Omar Sobh	d05e28a449	chore (#19) ... Co-authored-by: Omar Sobh <[email protected]> Co-committed-by: Omar Sobh <[email protected]>	2026-05-16 04:46:41 +00:00
Omar SobhandClaude Opus 4.6	0a17f170e6	test(rtx-tensor): add coverage tests for GenericTensor uncovered branches ... Add 10 new tests exercising previously uncovered GenericTensor operations: leaky_relu, elu, gt_scalar, var, var_dim, conv2d (identity kernel, stride, grad propagation), max_pool2d, and avg_pool2d. Also add test_utils.rs module for shared test helpers. SDLC-Coverage: rtx-tensor generic/tensor.rs 19.6% → targeting ~40%+ Co-Authored-By: Claude Opus 4.6 <[email protected]>	2026-05-14 19:25:11 -07:00
Omar Sobh	ff81df62ce	chore: commit local changes before node reformat	2026-05-10 14:11:34 -07:00
redclawsystems	ae53983c03	style: cargo fmt --all (18 files) ... Auto-merged by ci-doctor.	2026-05-07 16:30:04 +00:00
redclawsystems	789448f196	ci: validate after pool/labels fixes 2026-05-07	2026-05-07 11:34:42 +00:00
redclawsystems	737f4669d8	Merge pull request 'rtx-tensor + rtx-transformers: deterministic Mamba init + safetensors persistence' (#16) from feat/mamba-seed-and-persistence into main ... Reviewed-on: #16	2026-05-04 12:30:48 +00:00