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Fix out of bound ID passed to cutlass::arch::NamedBarrier::sync #2554

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Fix out of bound ID passed to cutlass::arch::NamedBarrier::sync #2554

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7569e52
Fix barrier ID
ksivaman Jan 1, 2026
ce625c1
Merge branch 'main' into fix_barrier_id
ksivaman Jan 2, 2026
6eabace
Merge branch 'main' into fix_barrier_id
ksivaman Jan 2, 2026
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4 changes: 3 additions & 1 deletion ...mer_engine/common/hadamard_transform/group_row_cast_col_hadamard_transform_cast_fusion.cu
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Expand Up @@ -983,7 +983,9 @@ __launch_bounds__(512, 1) __global__ static void group_row_col_rht_gemm_device(
Tensor tQAgSFA = thr_r2g_SFA.partition_S(gSFA_mn);
Tensor tQArSFA = make_tensor_like(tQAgSFA(_, _, _, _0{}, _0{}));

int row_quant_barrier_id = 10;
// Will result in barrier_id=10 passed to bar.sync instr as cutlass adds 8
// in order to go over the reserved named barrier count.
constexpr int row_quant_barrier_id = 2;
cutlass::arch::NamedBarrier::sync(NumEpilogueRowQuantThreadCount, row_quant_barrier_id);

int group_idx = GetGroupIdx(&args, scheduler.tile_n_base() * size<1>(epilogue_tiler));
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