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EEMBC 的 CoreMark? 評分是一種比較通用的基準測試方式，用于測量嵌入式系統中使用的微控制器（MCU）和中央處理單元（CPU）的性能，可以幫助人們比較不同的 CPU 架構的性能表現。

CoreMark 基準評分特點

CRC 算法具有雙重功能，在鏈表元素中包含的數據上執行16位CRC，以驗證操作正確，保證操作正確并提供自我檢查機制。

為了確保編譯器不能在編譯時預先計算結果，基準測試中的每個操作都會產生一個在編譯時不可用的值。此外，基準測試中定時部分使用的所有代碼都是基準測試本身的一部分（沒有庫調用）。

CoreMark 是一種基于 C 語言的 CPU 性能評測工具，其目標是為了提供一個可重復、可移植且各平臺間性能得分可比較的基準測試。CoreMark 包含多個小型測試，旨在模擬實際應用程序中常見的操作和趨勢。

一、下載&編譯

既然基于C，那就直接在板上編譯好了。git clone https://github.com/eembc/coremark.git直接把代碼從gethub上擼下來，可能網絡故障，需要多試幾次。

本地編譯好辦，先看看gcc版本。

linaro@linaro-alip:~/coremark$ gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/aarch64-linux-gnu/8/lto-wrapper
Target: aarch64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Debian 8.3.0-6' --with-bugurl=file:///usr/share/doc/gcc-8/README.Bugs --enable-languages=c,ada,c++,go,d,fortran,objc,obj-c++ --prefix=/usr --with-gcc-major-version-only --program-suffix=-8 --program-prefix=aarch64-linux-gnu- --enable-shared --enable-linker-build-id --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --libdir=/usr/lib --enable-nls --enable-bootstrap --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --with-default-libstdcxx-abi=new --enable-gnu-unique-object --disable-libquadmath --disable-libquadmath-support --enable-plugin --enable-default-pie --with-system-zlib --disable-libphobos --enable-multiarch --enable-fix-cortex-a53-843419 --disable-werror --enable-checking=release --build=aarch64-linux-gnu --host=aarch64-linux-gnu --target=aarch64-linux-gnu
Thread model: posix
gcc version 8.3.0 (Debian 8.3.0-6)

免去交叉編譯的麻煩，直接make即可。

linaro@linaro-alip:~/coremark$ make
make XCFLAGS=" -DPERFORMANCE_RUN=1" load run1.log
make[1]: Entering directory '/home/linaro/coremark'
make port_prebuild
make[2]: Entering directory '/home/linaro/coremark'
make[2]: Nothing to be done for 'port_prebuild'.
make[2]: Leaving directory '/home/linaro/coremark'
make link
make[2]: Entering directory '/home/linaro/coremark'
cc -O2 -Ilinux -Iposix -I. -DFLAGS_STR=""-O2 -DPERFORMANCE_RUN=1  -lrt"" -DITERATIONS=0 -DPERFORMANCE_RUN=1 core_list_join.c core_main.c core_matrix.c core_state.c core_util.c posix/core_portme.c -o ./coremark.exe -lrt
Link performed along with compile
make[2]: Leaving directory '/home/linaro/coremark'
make port_postbuild
make[2]: Entering directory '/home/linaro/coremark'
make[2]: Nothing to be done for 'port_postbuild'.
make[2]: Leaving directory '/home/linaro/coremark'
make port_preload
make[2]: Entering directory '/home/linaro/coremark'
make[2]: Nothing to be done for 'port_preload'.
make[2]: Leaving directory '/home/linaro/coremark'
echo Loading done ./coremark.exe
Loading done ./coremark.exe
make port_postload
make[2]: Entering directory '/home/linaro/coremark'
make[2]: Nothing to be done for 'port_postload'.
make[2]: Leaving directory '/home/linaro/coremark'
make port_prerun
make[2]: Entering directory '/home/linaro/coremark'
make[2]: Nothing to be done for 'port_prerun'.
make[2]: Leaving directory '/home/linaro/coremark'
./coremark.exe  0x0 0x0 0x66 0 7 1 2000 > ./run1.log

make port_postrun
make[2]: Entering directory '/home/linaro/coremark'
make[2]: Nothing to be done for 'port_postrun'.
make[2]: Leaving directory '/home/linaro/coremark'
make[1]: Leaving directory '/home/linaro/coremark'
make XCFLAGS=" -DVALIDATION_RUN=1" load run2.log
make[1]: Entering directory '/home/linaro/coremark'
make port_preload
make[2]: Entering directory '/home/linaro/coremark'
make[2]: Nothing to be done for 'port_preload'.
make[2]: Leaving directory '/home/linaro/coremark'
echo Loading done ./coremark.exe
Loading done ./coremark.exe
make port_postload
make[2]: Entering directory '/home/linaro/coremark'
make[2]: Nothing to be done for 'port_postload'.
make[2]: Leaving directory '/home/linaro/coremark'
make port_prerun
make[2]: Entering directory '/home/linaro/coremark'
make[2]: Nothing to be done for 'port_prerun'.
make[2]: Leaving directory '/home/linaro/coremark'
./coremark.exe  0x3415 0x3415 0x66 0 7 1 2000  > ./run2.log
make port_postrun
make[2]: Entering directory '/home/linaro/coremark'
make[2]: Nothing to be done for 'port_postrun'.
make[2]: Leaving directory '/home/linaro/coremark'
make[1]: Leaving directory '/home/linaro/coremark'
Check run1.log and run2.log for results.
See README.md for run and reporting rules.

生成coremark.exe ，奇怪了，這種.exe命名不是windows才有的嗎？Linux/GNU很少用這種方式。anyway，先看看可執行文件。

linaro@linaro-alip:~/coremark$ file coremark.exe
coremark.exe: ELF 64-bit LSB pie executable, ARM aarch64, version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux-aarch64.so.1, for GNU/Linux 3.7.0, BuildID[sha1]=ba590f0bbe7fe0273ccd6026c9fa18352507e4c0, not stripped

二、跑分

./coremark.exe跑跑，估計等過10s的樣子。