Awesome

MegPeak

Megpeak is a tool for testing processor peak computation, now support arm, x86 and GPU driven by OpenCL processor.

MegPeak can do

MegPeak can do:

Peak bandwidth of instruction
Instruction delay
Memory peak bandwidth
Peak bandwidth of arbitrary instruction combination

Although some of the above information can be obtained by querying the data sheet of the chip, and with guidance the theoretical the peak performance can be computed, but in many cases, the detail performance documents of the target processor cannot be obtained. In addition, the result through megpeak is more direct and accurate, and it can test the peak bandwidth of arbitrary instruction combination

BUILD

MegPeak only support CMake build system and require CMake version upper than 3.15.2, you can compile the MegPeak follow the step:

clone or download the project
choose a test platform
- if you will test x86 processor in linux OS
  - a gcc or clang compiler should find by cmake through PATH env
- if you will test arm processor in android OS
  - a ndk is required
    - download the NDK and extract to the host machine
    - set the NDK_ROOT env to the path of extracted NDK directory

if your target test OS is android，run the android_build.sh to build it

build for armv7
```
./android_build.sh -m armeabi-v7a
```
build for arm64
```
./android_build.sh -m arm64-v8a
```

build with OpenCL

./android_build.sh -l -m [arm64-v8a, armeabi-v7a]

build with all benchmark

./android_build.sh -a -m [arm64-v8a, armeabi-v7a]

if you target test OS is linux，if you want to enable OpenCL add -DMEGPEAK_ENABLE_OPENCL=ON to cmake command
```
mkdir -p build && cd build
cmake .. [-DMEGPEAK_ENABLE_OPENCL=ON]
make
```
after build, the executable file megpeak is stored in build directory

Run

If you compile the project and get the megpeak, next you can copy or set the megpeak executable file to the test machine，and run it and get the help message. bash ./megpeak -h

test opencl
```
./megpeak -d opencl
```
test CPU with cpu id
```
./megpeak -d cpu -i 0
```

GFlops test results for different CPUs

Platform	CPU	Architecture	Frequence(GHz)	GFLOPS	FLOPS/Cycle
/	Cortex-A7	ARMV7	1.0	1.902002	1.9020
/	Cortex-A53	ARM64	1.3	9.844987	7.5731
Xiaomi Mi 9 Core 0	Cortex-A55	ARM64	1.8	13.566583	7.537
raspberry-pi 4b	Cortex-A72	ARM64	1.5	11.664233	7.776
Xiaomi Mi 9 Core 6	Cortex-A76	ARM64	2.42	38.691399	15.988
Realme X7 Pro Core 4	Cortex-A77	ARM64	2.6	41.318005	15.892
Xiaomi Mi 11 Core 6	Cortex-A78	ARM64	2.4	33.781448	14.076
Apple Mac	Apple M1	ARM64	3.2	102.424	32.008
More details see wiki

Acknowledgement

OpenCL in MegPeak referenced the clpeak project

License

Apache-2.0