root@macchiatobin:~/src/benchs# uname -a
Linux macchiatobin 5.9.11-matteo #4 SMP Sat Dec 5 18:23:22 CET 2020 aarch64 GNU/Linux
root@macchiatobin:~/src/benchs# gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/aarch64-linux-gnu/10/lto-wrapper
Target: aarch64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Debian 10.2.0-23' --with-bugurl=file:///usr/share/doc/gcc-10/README.Bugs --enable-languages=c,ada,c++,go,d,fortran,objc,obj-c++,m2 --prefix=/usr --with-gcc-major-version-only --program-suffix=-10 --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 --enable-libphobos-checking=release --with-target-system-zlib=auto --enable-objc-gc=auto --enable-multiarch --enable-fix-cortex-a53-843419 --disable-werror --enable-checking=release --build=aarch64-linux-gnu --host=aarch64-linux-gnu --target=aarch64-linux-gnu --with-build-config=bootstrap-lto-lean --enable-link-mutex
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 10.2.0 (Debian 10.2.0-23)
root@macchiatobin:~/src/benchs# clang -v
Debian clang version 11.0.0-5+b1
Target: aarch64-unknown-linux-gnu
Thread model: posix
InstalledDir: /usr/bin
Found candidate GCC installation: /usr/bin/../lib/gcc/aarch64-linux-gnu/10
Found candidate GCC installation: /usr/lib/gcc/aarch64-linux-gnu/10
Selected GCC installation: /usr/bin/../lib/gcc/aarch64-linux-gnu/10
Candidate multilib: .;@m64
Selected multilib: .;@m64
root@macchiatobin:~/src/benchs# make run CC=gcc
gcc -pipe -O3 -Wall -mcpu=cortex-a72 -c -o dry.o dry.c
gcc -pipe -O3 -Wall -mcpu=cortex-a72 -c -o dry2.o dry2.c
gcc dry.o dry2.o -o dry
gcc -pipe -O3 -Wall -mcpu=cortex-a72 flops.c -o flops
./dry 2>/dev/null
Dhrystone Benchmark, Version C, Version 2.3
Program compiled without 'register' attribute
Using clock_gettime(), HZ=1000
Running 1 thread(s)
Microseconds for one run through Dhrystone: 0.0
Dhrystones per Second: 20193860
./flops
FLOPS C Program (Double Precision), V2.0 18 Dec 1992
Module Error RunTime MFLOPS
(usec)
1 4.0146e-13 0.0080 1749.5981
2 -1.4166e-13 0.0061 1142.5963
3 4.7184e-14 0.0074 2287.9728
4 -1.2546e-13 0.0079 1895.2186
5 -1.3800e-13 0.0147 1968.2602
6 3.2374e-13 0.0128 2270.7440
7 -8.4583e-11 0.0240 499.8896
8 3.4855e-13 0.0143 2096.9716
Iterations = 512000000
NullTime (usec) = 0.0000
MFLOPS(1) = 1366.1866
MFLOPS(2) = 1034.9090
MFLOPS(3) = 1637.4457
MFLOPS(4) = 2145.0981
root@macchiatobin:~/src/benchs# make run CC=clang
clang -pipe -O3 -Wall -mcpu=cortex-a72 -c -o dry.o dry.c
clang -pipe -O3 -Wall -mcpu=cortex-a72 -c -o dry2.o dry2.c
clang dry.o dry2.o -o dry
clang -pipe -O3 -Wall -mcpu=cortex-a72 flops.c -o flops
./dry 2>/dev/null
Dhrystone Benchmark, Version C, Version 2.3
Program compiled without 'register' attribute
Using clock_gettime(), HZ=1000
Running 1 thread(s)
Microseconds for one run through Dhrystone: 0.1
Dhrystones per Second: 15028554
./flops
FLOPS C Program (Double Precision), V2.0 18 Dec 1992
Module Error RunTime MFLOPS
(usec)
1 4.0146e-13 0.0080 1749.5972
2 -1.4166e-13 0.0065 1076.6778
3 4.7184e-14 0.0132 1289.9074
4 -1.2557e-13 0.0130 1152.0730
5 -1.3800e-13 0.0230 1262.6973
6 3.2380e-13 0.0207 1400.6490
7 -8.4583e-11 0.0240 499.8874
8 3.4867e-13 0.0220 1363.6914
Iterations = 512000000
NullTime (usec) = 0.0000
MFLOPS(1) = 1138.1883
MFLOPS(2) = 874.0951
MFLOPS(3) = 1178.5884
MFLOPS(4) = 1320.6963
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