[LoRA] Update LoRA expand kernel heuristic (#32425)

Signed-off-by: Xin Yang <xyangx@amazon.com>

[LoRA] Update LoRA expand kernel heuristic (#32425)
Signed-off-by: Xin Yang <xyangx@amazon.com>
a884bc62 · Xin Yang · GitHub · 7a103043 · a884bc62
Unverified Commit a884bc62 authored Jan 16, 2026 by Xin Yang Committed by GitHub Jan 16, 2026
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vllm/lora/ops/triton_ops/utils.py vllm/lora/ops/triton_ops/utils.py +1 -1

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--- a/vllm/lora/ops/triton_ops/utils.py
+++ b/vllm/lora/ops/triton_ops/utils.py
@@ -251,7 +251,7 @@ def get_lora_op_configs(
    else:
        default = {
            "block_m": 64,
-            "block_n": 128,
+            "block_n": max(64, next_power_of_2(128 // num_slices)),
            "block_k": 16,
            "num_warps": 4,
            "num_ctas": 1,