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+Witherspoon
+================
+
+This is the Witherspoon machine layer.
+
+Witherspoon, or AC922, is an IBM POWER9 two-socket, 2U Accelerated Compute
+Server with up to 6 NVIDIA Tesla GPUs. More information can be found
+[here](https://www.ibm.com/us-en/marketplace/power-systems-ac922).