cc-metric-collector/collectors/likwid/groups/power8/L3.txt
2021-03-25 14:47:10 +01:00

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SHORT L3 cache bandwidth in MBytes/s
EVENTSET
PMC0 PM_L3_LD_PREF
PMC3 PM_DATA_FROM_L3
PMC4 PM_RUN_INST_CMPL
PMC5 PM_RUN_CYC
METRICS
Runtime (RDTSC) [s] time
CPI PMC5/PMC4
L3D load bandwidth [MBytes/s] 1.0E-06*(PMC3+(PMC0-PMC3))*128.0/time
L3D load data volume [GBytes] 1.0E-09*(PMC3+(PMC0-PMC3))*128.0
L3 bandwidth [MBytes/s] 1.0E-06*(PMC3+(PMC0-PMC3))*128.0/time
L3 data volume [GBytes] 1.0E-09*(PMC3+(PMC0-PMC3))*128.0
Loads from local L3 per cycle 100.0*(PMC3+(PMC0-PMC3))/PMC5
LONG
Formulas:
CPI = PM_RUN_CYC/PM_RUN_INST_CMPL
L3D load bandwidth [MBytes/s] = 1.0E-06*(PM_DATA_FROM_L3)*128.0/time
L3D load data volume [GBytes] = 1.0E-09*(PM_DATA_FROM_L3)*128.0
L3D evict bandwidth [MBytes/s] = 1.0E-06*(PM_L2_CASTOUT_MOD)*128.0/time
L3D evict data volume [GBytes] = 1.0E-09*(PM_L2_CASTOUT_MOD)*128.0
L3 bandwidth [MBytes/s] = 1.0E-06*(PM_DATA_FROM_L3+PM_L2_CASTOUT_MOD)*128.0/time
L3 data volume [GBytes] = 1.0E-09*(PM_DATA_FROM_L3+PM_L2_CASTOUT_MOD)*128.0
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Profiling group to measure L3 cache bandwidth. The bandwidth is computed by the
number of cacheline loaded from the L3 to the L2 data cache. There is currently no
event to get the evicted data volume.