nviennot / core-to-core-latency

Measures the latency between CPU cores
MIT License
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[Result] AMD FX(tm)-8300 Eight-Core Processor @ 3.300GHz #43

Open kassane opened 2 years ago

kassane commented 2 years ago

OC: No (stock)

Num cores: 8
Num iterations per samples: 5000
Num samples: 300

1) CAS latency on a single shared cache line

           0       1       2       3       4       5       6       7   
      0
      1   47±1 
      2  320±2   277±1 
      3  322±3   222±1    42±0 
      4  332±2   326±3   331±2   297±2 
      5  264±2   239±1   318±2   224±1    42±0 
      6  323±3   340±2   335±2   337±3   339±2   271±1 
      7  248±1   233±1   256±1   251±1   262±1   223±1    42±0 

    Min  latency: 41.9ns ±0.3 cores: (3,2)
    Max  latency: 339.6ns ±2.5 cores: (6,1)
    Mean latency: 252.2ns

output.csv


Num cores: 8
Num iterations per samples: 30000
Num samples: 1000

1) CAS latency on a single shared cache line

           0       1       2       3       4       5       6       7   
      0
      1   41±0 
      2  276±1   249±1 
      3  307±1   237±0    42±0 
      4  260±1   248±1   241±1   269±1 
      5  333±1   221±0   320±1   246±0    40±0 
      6  289±1   350±1   255±0   274±1   255±0   273±1 
      7  327±1   250±0   267±1   222±0   328±1   236±0    41±0 

    Min  latency: 40.4ns ±0.1 cores: (5,4)
    Max  latency: 350.1ns ±1.1 cores: (6,1)
    Mean latency: 239.2ns

output.csv