diff --git a/src/aiconfigurator/systems/data/gb300/vllm/0.20.1/SHARED_LAYER_REUSE.txt b/src/aiconfigurator/systems/data/gb300/vllm/0.20.1/SHARED_LAYER_REUSE.txt
new file mode 100644
index 000000000..c6093967e
--- /dev/null
+++ b/src/aiconfigurator/systems/data/gb300/vllm/0.20.1/SHARED_LAYER_REUSE.txt
@@ -0,0 +1,5 @@
+GB300 support for vLLM 0.20.1 is declared for support-matrix shared-layer reuse.
+
+This directory may contain measured active-version silicon tables. Missing
+compatible shapes may be inherited from sibling rows through
+op_kernel_source_manifest.yaml until fuller measured coverage lands here.
diff --git a/src/aiconfigurator/systems/data/gb300/vllm/0.20.1/mhc_module_perf.parquet b/src/aiconfigurator/systems/data/gb300/vllm/0.20.1/mhc_module_perf.parquet
new file mode 100644
index 000000000..0f69b0ccd
Binary files /dev/null and b/src/aiconfigurator/systems/data/gb300/vllm/0.20.1/mhc_module_perf.parquet differ