Skip to content

Conversation

@adrastogi
Copy link
Contributor

Description

This change proposes a fix to some DML crashes observed in WebNN QDQ subgraph tests. The root cause of the problem as analyzed in the issue linked below is that the DML EP does not have kernels implemented for the QLinear versions of LeakyRelu and Softmax. The QDQ transformer has logic to fuse a 3-node sequence in the graph to the associated QLinear custom op. There is an operator registry which contains the mapping between EPs and the ops that the transformer consults for computing the quantized variants.

The registry currently has the CPU and DML EPs supporting the same sets of operators (thereby assuming that the fused node would also be supported by the EP), so what I did was split out a separate registration for the LeakyRelu and Softmax ops and associate them with the CPU EP, while removing those ops from the prior list.

I was trying to also explore other options like seeing if I could somehow check to see if the EP has a supported kernel for the op before proceeding with the assignment- I could not figure out a way to do this, though.

I validated this change by building a private version of ORT and running the affected tests in Edge Canary. The crash did not occur for those tests with the fix in place.

Motivation and Context

This bug causes crashes in the web browser's GPU sandbox process, which is a blocker for WebNN origin trials. The crashes need to be resolved.

Fixes #26531.

@adrastogi adrastogi requested a review from fdwr December 18, 2025 00:00
fdwr
fdwr previously approved these changes Dec 18, 2025
Copy link
Contributor

@fdwr fdwr left a comment

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

👍

@adrastogi adrastogi marked this pull request as ready for review December 18, 2025 03:34
@guschmue guschmue added the WebNN WebNN on top of onnxruntime label Dec 19, 2025
Copy link
Contributor

@fdwr fdwr left a comment

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

👍

@edgchen1 edgchen1 enabled auto-merge (squash) December 19, 2025 20:53
@edgchen1 edgchen1 merged commit 9ce61be into main Dec 19, 2025
100 of 103 checks passed
@edgchen1 edgchen1 deleted the adrastogi/dml-qdq-fix branch December 19, 2025 22:08
adrastogi added a commit that referenced this pull request Jan 9, 2026
### Description
<!-- Describe your changes. -->
This change proposes a fix to some DML crashes observed in WebNN QDQ
subgraph tests. The root cause of the problem as analyzed in the issue
linked below is that the DML EP does not have kernels implemented for
the QLinear versions of LeakyRelu and Softmax. The QDQ transformer has
logic to fuse a 3-node sequence in the graph to the associated QLinear
custom op. There is an operator registry which contains the mapping
between EPs and the ops that the transformer consults for computing the
quantized variants.

The registry currently has the CPU and DML EPs supporting the same sets
of operators (thereby assuming that the fused node would also be
supported by the EP), so what I did was split out a separate
registration for the LeakyRelu and Softmax ops and associate them with
the CPU EP, while removing those ops from the prior list.

I was trying to also explore other options like seeing if I could
somehow check to see if the EP has a supported kernel for the op before
proceeding with the assignment- I could not figure out a way to do this,
though.

I validated this change by building a private version of ORT and running
the affected tests in Edge Canary. The crash did not occur for those
tests with the fix in place.

### Motivation and Context
<!-- - Why is this change required? What problem does it solve?
- If it fixes an open issue, please link to the issue here. -->
This bug causes crashes in the web browser's GPU sandbox process, which
is a blocker for WebNN origin trials. The crashes need to be resolved.

Fixes #26531.

---------

Co-authored-by: Aditya Rastogi <[email protected]>
adrastogi added a commit that referenced this pull request Jan 14, 2026
* **Address DML crashes in WebNN QDQ subgraph tests (#26822)**
* **Update to next 15.2.6
(e7d04b949bd4550694a72af365ca97fa3ab4bd7d)**

---------

Co-authored-by: Aditya Rastogi <[email protected]>
Co-authored-by: Kevin Taha <[email protected]>
alex-spacemit pushed a commit to spacemit-com/onnxruntime that referenced this pull request Jan 20, 2026
### Description
<!-- Describe your changes. -->
This change proposes a fix to some DML crashes observed in WebNN QDQ
subgraph tests. The root cause of the problem as analyzed in the issue
linked below is that the DML EP does not have kernels implemented for
the QLinear versions of LeakyRelu and Softmax. The QDQ transformer has
logic to fuse a 3-node sequence in the graph to the associated QLinear
custom op. There is an operator registry which contains the mapping
between EPs and the ops that the transformer consults for computing the
quantized variants.

The registry currently has the CPU and DML EPs supporting the same sets
of operators (thereby assuming that the fused node would also be
supported by the EP), so what I did was split out a separate
registration for the LeakyRelu and Softmax ops and associate them with
the CPU EP, while removing those ops from the prior list.

I was trying to also explore other options like seeing if I could
somehow check to see if the EP has a supported kernel for the op before
proceeding with the assignment- I could not figure out a way to do this,
though.

I validated this change by building a private version of ORT and running
the affected tests in Edge Canary. The crash did not occur for those
tests with the fix in place.

### Motivation and Context
<!-- - Why is this change required? What problem does it solve?
- If it fixes an open issue, please link to the issue here. -->
This bug causes crashes in the web browser's GPU sandbox process, which
is a blocker for WebNN origin trials. The crashes need to be resolved.

Fixes microsoft#26531.

---------

Co-authored-by: Aditya Rastogi <[email protected]>
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment

Labels

WebNN WebNN on top of onnxruntime

Projects

None yet

Development

Successfully merging this pull request may close these issues.

[ORT GPU (DML)][WebNN] two WebNN QDQ subgraph tests get crash

5 participants