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Consider using pre-built Flash Attention kernels via kernels

Status: Open.

#2821 In Lightning-AI/lightning-thunder;

· sayakpaul opened on May 28, 2026

Refactor Triton cross-entropy executor: cleanup | Reduce activation memory in cross-entropy backward

Status: Open.

#2818 In Lightning-AI/lightning-thunder;

· oonyshch opened on Mar 23, 2026

Remove xfails once PyTorch autograd stabilizes

autograd

testing

Status: Open.

#2807 In Lightning-AI/lightning-thunder;

· mattteochen opened on Dec 16, 2025

args_tensor_mask has been removed from torch.ops.higher_order.autograd_function_apply

autograd

Status: Open.

#2803 In Lightning-AI/lightning-thunder;

· mattteochen opened on Dec 15, 2025

In-place ops on cloned tensor propagates to the original tensor

Status: Open.

#2793 In Lightning-AI/lightning-thunder;

· shino16 opened on Dec 10, 2025

Investigate torch.Tensor.__setitem__ as unsupported in thunderfx

operators

Status: Open.

#2790 In Lightning-AI/lightning-thunder;

· mattteochen opened on Dec 3, 2025

[symbolic values] Trace bakes in the initial value of input used for trace construction

symbolic values

Status: Open.

#2789 In Lightning-AI/lightning-thunder;

· kshitij12345 opened on Dec 3, 2025

AssertionError for mutation on intermediates being reordered after return

Status: Open.

#2776 In Lightning-AI/lightning-thunder;

· shino16 opened on Nov 27, 2025

[inference] High thunder.jit/thunderfx overhead for small module

Status: Open.

#2775 In Lightning-AI/lightning-thunder;

· kshitij12345 opened on Nov 27, 2025

Too many update_aliases after in-place op

aliasing

in-place

Status: Open.

#2768 In Lightning-AI/lightning-thunder;

· shino16 opened on Nov 25, 2025

Errors on in-place ops on tensor aliases unresolved by proxy substitution

aliasing

in-place

Status: Open.

#2766 In Lightning-AI/lightning-thunder;

· shino16 opened on Nov 24, 2025

Replace usage of nvFuser's broadcast_in_dim in executor with broadcast+expand ops

enhancementNew feature or requestNew feature or request

executors

nvfuser

Status: Open.

#2765 In Lightning-AI/lightning-thunder;

· IvanYashchuk opened on Nov 23, 2025