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[Performance] gather_qmm at M=1 streams 4-bit expert weights at ~half the bandwidth of M=4 (MoE decode)

Status: Open.

#4509 In ml-explore/mlx;

· freddyhaddad opened on Sep 14, 2026

[BUG] threads and streams issues

Status: Open.

#4506 In ml-explore/mlx;

· davidkoski opened on Sep 14, 2026

mx.compile inlines float scalar constants with 7 significant digits, so compiled results differ from eager by 1 ulp

Status: Open.

#4503 In ml-explore/mlx;

· freddyhaddad opened on Sep 14, 2026

[BUG] argsort diverges between cpu and gpu on complexes with NaN

Status: Open.

#4502 In ml-explore/mlx;

· louen opened on Sep 14, 2026

quantized_matmul is slower than dense bf16 when the output dimension is not a multiple of 8, and ~7x slower below 8

Status: Open.

#4498 In ml-explore/mlx;

· ursk opened on Sep 13, 2026

[BUG] JACCL segfaults in mx.distributed.init(backend="jaccl") on 2-node Mac-Mac with RDMA devices present

Status: Open.

#4485 In ml-explore/mlx;

· cdvankammen opened on Sep 9, 2026

mx.dequantize returns garbage on CPU past 2^31 unpacked bits (int size in cpu/binary.h)

bug

low priority

Status: Open.

#4479 In ml-explore/mlx;

· builtbycnob opened on Sep 8, 2026

mx.distributed ring backend: gradient-shaped CPU-stream all_sum deadlocks probabilistically (~3-4%/call) across a training loop; GPU-stream variant crashes deterministically at ~5s

bug

distributed

Status: Open.

#4475 In ml-explore/mlx;

· ictashik opened on Sep 8, 2026

Einsum selects unsupported matmul for integer contractions

documentation

low priority

Status: Open.

#4463 In ml-explore/mlx;

· justinchuby opened on Sep 4, 2026

Scan primitive lacks output_shapes for shapeless compile

enhancement

low priority

Status: Open.

#4460 In ml-explore/mlx;

· justinchuby opened on Sep 4, 2026

[BUG] Inconsistent behaviour of the floot_divide integer arrays truncates towards 0

bug

low priority

Status: Open.

#4450 In ml-explore/mlx;

· aaishwarymishra opened on Sep 2, 2026

[BUG] Silently wrong grad and vmap for a strided slice that selects exactly one element

bug

low priority

Status: Open.

#4444 In ml-explore/mlx;

· mentria-ai opened on Sep 1, 2026