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[UR][TEST] Clarify known-failure rationale for kernel subgroup query test #21566

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[UR][TEST] Clarify known-failure rationale for kernel subgroup query test #21566

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14 changes: 12 additions & 2 deletions unified-runtime/test/conformance/kernel/urKernelGetSubGroupInfo.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -10,9 +10,19 @@

struct urKernelGetSubGroupInfoFixedSubGroupSizeTest : uur::urKernelTest {
void SetUp() override {
// XFAIL rationale:
// This test expects COMPILE_NUM_SUB_GROUPS to reflect fixed_sg_size source
// metadata, but adapter behavior differs:
// - CUDA/HIP/NativeCPU return a trivial hard-coded 0.
// - Offload returns UR_RESULT_ERROR_UNSUPPORTED_ENUMERATION.
// - OpenCL/LevelZero/LevelZeroV2 implement subgroup queries, but on some
// systems urProgramBuild fails first with "Unsupported required sub group size"
// (UR_RESULT_ERROR_PROGRAM_BUILD_FAILURE), so the runtime assertion regarding
// the urKernelGetSubGroupInfo query is not reached.
// See https://github.com/oneapi-src/unified-runtime/issues/2514
UUR_KNOWN_FAILURE_ON(uur::CUDA{}, uur::HIP{}, uur::OpenCL{},
uur::LevelZero{}, uur::LevelZeroV2{});
UUR_KNOWN_FAILURE_ON(uur::CUDA{}, uur::HIP{}, uur::OpenCL{}, uur::Offload{},
uur::LevelZero{}, uur::LevelZeroV2{},
uur::NativeCPU{});
program_name = "fixed_sg_size";
UUR_RETURN_ON_FATAL_FAILURE(urKernelTest::SetUp());
}
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