CPU: Intel(R) Core(TM) i5-7500 CPU @ 3.40GHz

```
CPU: Intel(R) Core(TM) i5-7500 CPU @ 3.40GHz
Cores: 4
Freq: 3407.999 MHz
Ram: 12Gi
Disk: Msft Virtual Disk
OS: Linux (5.10.60.1-microsoft-standard-WSL2)
Cc: clang version 10.0.0-4ubuntu1
138.672 seconds: ./build_all.sh CC=clang
36.898 seconds: ./koch temp -d:release --cc:clang
```