https://msdn.microsoft.com/ko-kr/library/windows/desktop/ms683194(v=vs.85).aspx
마이크로소프트에서 배포하는 Coreinfo라는 유틸리티가 저 함수로 가져온 정보를 이쁘게 출력해 줍니다.
https://technet.microsoft.com/en-us/sysinternals/cc835722.aspx
아래가 -l 옵션으로 제 CPU에서 뽑아낸 캐시 정보입니다.
Logical Processor to Cache Map:
**------ Data Cache 0, Level 1, 32 KB, Assoc 8, LineSize 64
**------ Instruction Cache 0, Level 1, 32 KB, Assoc 8, LineSize 64
**------ Unified Cache 0, Level 2, 256 KB, Assoc 8, LineSize 64
******** Unified Cache 1, Level 3, 8 MB, Assoc 16, LineSize 64
--**---- Data Cache 1, Level 1, 32 KB, Assoc 8, LineSize 64
--**---- Instruction Cache 1, Level 1, 32 KB, Assoc 8, LineSize 64
--**---- Unified Cache 2, Level 2, 256 KB, Assoc 8, LineSize 64
----**-- Data Cache 2, Level 1, 32 KB, Assoc 8, LineSize 64
----**-- Instruction Cache 2, Level 1, 32 KB, Assoc 8, LineSize 64
----**-- Unified Cache 3, Level 2, 256 KB, Assoc 8, LineSize 64
------** Data Cache 3, Level 1, 32 KB, Assoc 8, LineSize 64
------** Instruction Cache 3, Level 1, 32 KB, Assoc 8, LineSize 64
------** Unified Cache 4, Level 2, 256 KB, Assoc 8, LineSize 64
**------ 이 표시가 프로세서 마스크입니다. * 한 개는 하나의 논리 프로세서를 의미하며,
SMT를 지원하기 때문에 하나의 물리 코어에 ** 이렇게 두 개가 있습니다.
******** 이런 8개 표시는 L3 같은 전체 공유 부분을 의미합니다.
아래는 아난드텍 포럼에 올라온 라이젠의 코어 정보입니다.
https://forums.anandtech.com/threads/official-amd-ryzen-benchmarks-reviews-prices-and-discussion.2499879/page-128#post-38774366
제가 금요일에 라이젠 쓰레드 배분 문제 소식을 들으면서 저 함수로 가져오는 정보에 문제가 있는 게 아닐까 예상했었는데,
확실히 문제가 있음을 알 수 있습니다.
Logical Processor to Cache Map:
*--------------- Data Cache 0, Level 1, 32 KB, Assoc 8, LineSize 64
*--------------- Instruction Cache 0, Level 1, 64 KB, Assoc 4, LineSize 64
*--------------- Unified Cache 0, Level 2, 512 KB, Assoc 8, LineSize 64
*--------------- Unified Cache 1, Level 3, 16 MB, Assoc 16, LineSize 64
-*-------------- Data Cache 1, Level 1, 32 KB, Assoc 8, LineSize 64
-*-------------- Instruction Cache 1, Level 1, 64 KB, Assoc 4, LineSize 64
-*-------------- Unified Cache 2, Level 2, 512 KB, Assoc 8, LineSize 64
-*-------------- Unified Cache 3, Level 3, 16 MB, Assoc 16, LineSize 64
--*------------- Data Cache 2, Level 1, 32 KB, Assoc 8, LineSize 64
--*------------- Instruction Cache 2, Level 1, 64 KB, Assoc 4, LineSize 64
--*------------- Unified Cache 4, Level 2, 512 KB, Assoc 8, LineSize 64
--*------------- Unified Cache 5, Level 3, 16 MB, Assoc 16, LineSize 64
---*------------ Data Cache 3, Level 1, 32 KB, Assoc 8, LineSize 64
---*------------ Instruction Cache 3, Level 1, 64 KB, Assoc 4, LineSize 64
---*------------ Unified Cache 6, Level 2, 512 KB, Assoc 8, LineSize 64
---*------------ Unified Cache 7, Level 3, 16 MB, Assoc 16, LineSize 64
----*----------- Data Cache 4, Level 1, 32 KB, Assoc 8, LineSize 64
----*----------- Instruction Cache 4, Level 1, 64 KB, Assoc 4, LineSize 64
----*----------- Unified Cache 8, Level 2, 512 KB, Assoc 8, LineSize 64
----*----------- Unified Cache 9, Level 3, 16 MB, Assoc 16, LineSize 64
-----*---------- Data Cache 5, Level 1, 32 KB, Assoc 8, LineSize 64
-----*---------- Instruction Cache 5, Level 1, 64 KB, Assoc 4, LineSize 64
-----*---------- Unified Cache 10, Level 2, 512 KB, Assoc 8, LineSize 64
-----*---------- Unified Cache 11, Level 3, 16 MB, Assoc 16, LineSize 64
------*--------- Data Cache 6, Level 1, 32 KB, Assoc 8, LineSize 64
------*--------- Instruction Cache 6, Level 1, 64 KB, Assoc 4, LineSize 64
------*--------- Unified Cache 12, Level 2, 512 KB, Assoc 8, LineSize 64
------*--------- Unified Cache 13, Level 3, 16 MB, Assoc 16, LineSize 64
-------*-------- Data Cache 7, Level 1, 32 KB, Assoc 8, LineSize 64
-------*-------- Instruction Cache 7, Level 1, 64 KB, Assoc 4, LineSize 64
-------*-------- Unified Cache 14, Level 2, 512 KB, Assoc 8, LineSize 64
-------*-------- Unified Cache 15, Level 3, 16 MB, Assoc 16, LineSize 64
--------*------- Data Cache 8, Level 1, 32 KB, Assoc 8, LineSize 64
--------*------- Instruction Cache 8, Level 1, 64 KB, Assoc 4, LineSize 64
--------*------- Unified Cache 16, Level 2, 512 KB, Assoc 8, LineSize 64
--------*------- Unified Cache 17, Level 3, 16 MB, Assoc 16, LineSize 64
---------*------ Data Cache 9, Level 1, 32 KB, Assoc 8, LineSize 64
---------*------ Instruction Cache 9, Level 1, 64 KB, Assoc 4, LineSize 64
---------*------ Unified Cache 18, Level 2, 512 KB, Assoc 8, LineSize 64
---------*------ Unified Cache 19, Level 3, 16 MB, Assoc 16, LineSize 64
----------*----- Data Cache 10, Level 1, 32 KB, Assoc 8, LineSize 64
----------*----- Instruction Cache 10, Level 1, 64 KB, Assoc 4, LineSize 64
----------*----- Unified Cache 20, Level 2, 512 KB, Assoc 8, LineSize 64
----------*----- Unified Cache 21, Level 3, 16 MB, Assoc 16, LineSize 64
-----------*---- Data Cache 11, Level 1, 32 KB, Assoc 8, LineSize 64
-----------*---- Instruction Cache 11, Level 1, 64 KB, Assoc 4, LineSize 64
-----------*---- Unified Cache 22, Level 2, 512 KB, Assoc 8, LineSize 64
-----------*---- Unified Cache 23, Level 3, 16 MB, Assoc 16, LineSize 64
------------*--- Data Cache 12, Level 1, 32 KB, Assoc 8, LineSize 64
------------*--- Instruction Cache 12, Level 1, 64 KB, Assoc 4, LineSize 64
------------*--- Unified Cache 24, Level 2, 512 KB, Assoc 8, LineSize 64
------------*--- Unified Cache 25, Level 3, 16 MB, Assoc 16, LineSize 64
-------------*-- Data Cache 13, Level 1, 32 KB, Assoc 8, LineSize 64
-------------*-- Instruction Cache 13, Level 1, 64 KB, Assoc 4, LineSize 64
-------------*-- Unified Cache 26, Level 2, 512 KB, Assoc 8, LineSize 64
-------------*-- Unified Cache 27, Level 3, 16 MB, Assoc 16, LineSize 64
--------------*- Data Cache 14, Level 1, 32 KB, Assoc 8, LineSize 64
--------------*- Instruction Cache 14, Level 1, 64 KB, Assoc 4, LineSize 64
--------------*- Unified Cache 28, Level 2, 512 KB, Assoc 8, LineSize 64
--------------*- Unified Cache 29, Level 3, 16 MB, Assoc 16, LineSize 64
---------------* Data Cache 15, Level 1, 32 KB, Assoc 8, LineSize 64
---------------* Instruction Cache 15, Level 1, 64 KB, Assoc 4, LineSize 64
---------------* Unified Cache 30, Level 2, 512 KB, Assoc 8, LineSize 64
---------------* Unified Cache 31, Level 3, 16 MB, Assoc 16, LineSize 64
첫째,
SMT를 인식하지 못합니다. 8C16T가 아니라, 16C16T로 인식하고 있습니다.
둘째,
공유 부분을 인식하지 못합니다. 두 논리 프로세서가 공유하는 L1,L2 캐시는 물론이고,
전체 코어가 공유하는 L3 캐시조차 각 코어가 가진 것으로 인식하여 결과적으로 L3가 수백
MB나 있다고 잘못된 정보를 주고 있습니다.
AMD와 마이크로소프트가 시급하게 수정해야 합니다.
http://www.hwbattle.com/bbs/board.php?bo_table=cpumbram&wr_id=58471
-------------------------------------------------------------
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