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onnx: dynamic If with branches of different shapes fails to analyse (Impossible to unify Val(5) with Val(0))

Status: Open.

#2695 In sonos/tract;

· ikrivosheev opened on Aug 21, 2026

core/cnn: rank-1 small-kernel convs miss both should_use_lazy rules, ~6-8% on streaming audio models

Status: Open.

#2666 In sonos/tract;

· czoli1976 opened on Aug 18, 2026

onnx: no sequence-type support blocks models using SplitToSequence / SequenceAt

Status: Open.

#2665 In sonos/tract;

· czoli1976 opened on Aug 18, 2026

CLI: cannot bind graph symbols before analysis, and broadcast(sym, sym) does not simplify

Status: Open.

#2650 In sonos/tract;

· czoli1976 opened on Aug 17, 2026

ONNX import: MatMulNBits rejects a weight behind a Reshape (tied lm_head in ORT-GenAI exports)

Status: Open.

#2649 In sonos/tract;

· czoli1976 opened on Aug 17, 2026

ONNX import: SimplifiedLayerNormalization lowers to LayerNorm, not RMS norm

Status: Open.

#2646 In sonos/tract;

· czoli1976 opened on Aug 17, 2026

Fusing a GRU Scan into one op: what should happen to tract-managed cross-call state?

Status: Open.

#2629 In sonos/tract;

· czoli1976 opened on Aug 12, 2026

Metadata-only ops deep-copy inside Scan bodies: 14x cost, ~10% of frame on streaming RNN models

Status: Open.

#2625 In sonos/tract;

· czoli1976 opened on Aug 12, 2026

Binary elementwise fast paths gated at 32 elements: ~20% left on small-tensor graphs

Status: Open.

#2619 In sonos/tract;

· czoli1976 opened on Aug 12, 2026

Proposal: cargo features to trim tract-core op families (binary size on edge / wasm)

Status: Open.

#2607 In sonos/tract;

· czoli1976 opened on Aug 10, 2026

f16 matmul always accumulates in f16, even where an f32-accumulating kernel already exists

Status: Open.

#2588 In sonos/tract;

· czoli1976 opened on Aug 4, 2026

arm64: fused f32 GELU returns 0.5*x*2^-23 instead of 0 for large negative x

Status: Open.

#2569 In sonos/tract;

· czoli1976 opened on Aug 3, 2026