In wikipedia no info about L1/L2 cache on Epyc. Only L3. Does L1/L2 cache exists on it or not? Just interesting...
P.S. 2Mb L3 cache per thread allready too low... AMD can add more L3 cache on Epyc... Especcially if L1/L2 cache is absent...
My AMD Epyc 7351P has 64 MB shared L3 cache, besides of 16x 512 KB L2 cache dedicated to each core.
http://www.cpu-world.com/CPUs/Zen/AMD-EPYC%207351P.html