SHORT Read/Write Events between the ccNUMA nodes EVENTSET UPMC0 UNC_CPU_TO_DRAM_LOCAL_TO_0 UPMC1 UNC_CPU_TO_DRAM_LOCAL_TO_1 UPMC2 UNC_CPU_TO_DRAM_LOCAL_TO_2 UPMC3 UNC_CPU_TO_DRAM_LOCAL_TO_3 METRICS Runtime (RDTSC) [s] time DRAM read/write local to 0 [MegaEvents/s] 1.0E-06*UPMC0/time DRAM read/write local to 1 [MegaEvents/s] 1.0E-06*UPMC1/time DRAM read/write local to 2 [MegaEvents/s] 1.0E-06*UPMC2/time DRAM read/write local to 3 [MegaEvents/s] 1.0E-06*UPMC3/time LONG Formulas: DRAM read/write local to 0 [MegaEvents/s] = 1.0E-06*UNC_CPU_TO_DRAM_LOCAL_TO_0/time DRAM read/write local to 1 [MegaEvents/s] = 1.0E-06*UNC_CPU_TO_DRAM_LOCAL_TO_1/time DRAM read/write local to 2 [MegaEvents/s] = 1.0E-06*UNC_CPU_TO_DRAM_LOCAL_TO_2/time DRAM read/write local to 3 [MegaEvents/s] = 1.0E-06*UNC_CPU_TO_DRAM_LOCAL_TO_3/time - Profiling group to measure the traffic from local CPU to the different DRAM NUMA nodes. This group allows to detect NUMA problems in a threaded code. You must first determine on which memory domains your code is running. A code should only have significant traffic to its own memory domain.