[CK] disable DPP kernels by default#8501
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bartekxk
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Jun 17, 2026
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[CK] disable DPP kernels by default
## Motivation
The dpp8 instruction has been disabled in the upstream llvm-project in
the latest compiler version, so we're hitting compilation errors with
staging compiler:
<inline asm>:2:33: error: not a valid operand.
v_dot2c_f32_f16_dpp v6, v8, v7 dpp8:[0, 0, 0, 0, 0, 0, 0, 0]
^
error: cannot compile inline asm
These instructions are used for fp16 gemms that are slightly faster than
dl gemms on gfx10, but are not critical.
Going to disable these kernels for now, until a better solution is
available, to unblock the builds with staging compiler.
## Technical Details
<!-- Explain the changes along with any relevant GitHub links. -->
## Test Plan
<!-- Explain any relevant testing done to verify this PR. -->
## Test Result
<!-- Briefly summarize test outcomes. -->
## Submission Checklist
- [ ] Look over the contributing guidelines at
https://github.com/ROCm/ROCm/blob/develop/CONTRIBUTING.md#pull-requests.
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mhalk
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Jul 1, 2026
Currently, this is disabled by CK itself, see: ROCm/rocm-libraries#8501
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Motivation
The dpp8 instruction has been disabled in the upstream llvm-project in the latest compiler version, so we're hitting compilation errors with staging compiler:
:2:33: error: not a valid operand.
v_dot2c_f32_f16_dpp v6, v8, v7 dpp8:[0, 0, 0, 0, 0, 0, 0, 0]
^
error: cannot compile inline asm
These instructions are used for fp16 gemms that are slightly faster than dl gemms on gfx10, but are not critical.
Going to disable these kernels for now, until a better solution is available, to unblock the builds with staging compiler.
Technical Details
Test Plan
Test Result
Submission Checklist