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Scan new API does not respect user-defined ordering of mapped (None) outputs and non-traceable SIT-SOT

bugSomething isn't workingSomething isn't working

scan

Status: Open.

#1796 In pymc-devs/pytensor;

· ricardoV94 opened on Dec 18, 2025

Rethink Scan special behavior when n_steps < pre-allocated output buffer

backend compatibility

Op implementation

scan

Status: Open.

#1741 In pymc-devs/pytensor;

· ricardoV94 opened on Nov 24, 2025

Scan mixing of positive and negative mitmot taps is error-prone

backend compatibility

Op implementation

scan

Status: Open.

#1740 In pymc-devs/pytensor;

· ricardoV94 opened on Nov 24, 2025

Scans are never constant-folded

graph rewriting

performance

scan

Status: Open.

#1688 In pymc-devs/pytensor;

· ricardoV94 opened on Oct 23, 2025

Rewrite mit-mot Scans as sit-sot

gradients

performance

scan

Status: Open.

#1687 In pymc-devs/pytensor;

· ricardoV94 opened on Oct 22, 2025

Numba scan: Avoid writing in every iteration of the loop when only last state is returned

numba

performance

scan

Status: Open.

#1680 In pymc-devs/pytensor;

· ricardoV94 opened on Oct 20, 2025

Equality of Ops with InnerGraph

enhancementNew feature or requestNew feature or request

Op implementation

OpFromGraph

scan

Status: Open.

#1606 In pymc-devs/pytensor;

· ricardoV94 opened on Sep 6, 2025

Scan Op is hashable but mutable in a way that affects its equality

bugSomething isn't workingSomething isn't working

scan

Status: Open.

#1601 In pymc-devs/pytensor;

· ricardoV94 opened on Aug 30, 2025

Rewrite nested inc/set_subtensor on zeros

gradients

graph rewriting

indexing

scan

Status: Open.

#1292 In pymc-devs/pytensor;

· ricardoV94 opened on Mar 12, 2025

Scan save mem rewrite masks issues with <code>steps=0</code>

bugSomething isn't workingSomething isn't working

graph rewriting

scan

Status: Open.

#1288 In pymc-devs/pytensor;

· ricardoV94 opened on Mar 12, 2025

Scan NIT-SOT with 0 steps have wrong shape

bugSomething isn't workingSomething isn't working

Op implementation

scan

shape problem

Status: Open.

#1287 In pymc-devs/pytensor;

· ricardoV94 opened on Mar 12, 2025

Inplace on sit-sot / mit-sot when nsteps is symbolic

memory_optimization

numba

scan

Status: Open.

#1283 In pymc-devs/pytensor;

· ricardoV94 opened on Mar 10, 2025