To analyze the performance of your UPC programs, you will need to configure PPW to use a UPC compiler. If you haven't configured PPW to use a UPC compiler yet, please see Backend Installation.
When measuring performance data for UPC programs, all shared data references occurring through direct variable accesses will be attributed to the ‘upc_get’ and ‘upc_put’ regions. Shared data references with affinity to the current thread will be attributed to the ‘upc_get_local’ and ‘upc_put_local’ regions. Additionally, in some UPC implementations (including Berkeley UPC), a ‘upc_barrier’ will be split into ‘upc_notify; upc_wait;’ and show up in the ‘upc_notify’ and ‘upc_wait’ regions.