Shulou(Shulou.com)06/01 Report--

Linux 4.21 AMD Rome processor in the new Zen 2 architecture of the new optimization is how, many novices are not very clear about this, in order to help you solve this problem, the following editor will explain for you in detail, people with this need can come to learn, I hope you can gain something.

Phoronix Linux enthusiasts report that Linux 4.21 contains important new optimizations for the new Zen 2 architecture in AMD Rome processors. AMD's new 7nm EPYC Rome chip brings a new and unique architecture, which can achieve unprecedented low price, up to 64 cores and 128threads, but the new architecture is not compatible with the system, so it needs to be optimized separately, especially considering the unique design of AMD.

AMD's next generation of EPYC Rome processors, which went on sale in the first quarter, brought a whole new design with more computing power than the first generation of EPYC Naples chips. The second generation Infinity Fabric of AMD has the characteristics of delay and large bandwidth, so it can connect the multi-chip design with the 14nm I mango O chip, which is the key to the design. The central chip connects eight 7nm CPU chips through Infinity Fabric to create an architecture that can be extended on a large scale.

The new Linux kernel has an extension to Zen 2 QoS to monitor and manage the use of resources within the system, such as L3 cache. AMD also recently introduced a new Zen 2 "znver2" compiler, which supports several new commands, such as delete and valid cache (WBNOINVD), read processor ID (RDPID), and cache line deletion (CLWB), which supports NVDIMM (non-volatile cache). However, the new compiler does not support the AVX512 instruction set, which is much less efficient for video coding, and may be updated to support the AVX512 instruction set in the future.

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