Fix fused_qkv print model ValueError #7109
Merged
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Suppose qkv_linear_weight_shape = [in_features, out_features].
The qkv linear weight shape is [3, in_features, out_features] if using fued_qkv gemm optimization. It will cause "ValueError: too many values to unpack (expected 2)" issue when printing the model.
Solution: Take the last two weight dimensions shapes as in_features and out_features.