Weird thing to say! What do you call slow? bruce@i9:~$ cat hello.c #include <stdio.h> int main(){ printf("Hello world!\n"); return 0;

Weird thing to say! What do you call slow? bruce@i9:~$ cat hello.c #include <stdio.h> int main(){ printf("Hello world!\n"); return 0; } Cross-compiling and running in a local emulator: bruce@i9:~$ time (riscv64-unknown-elf-gcc hello.c -o hello; qemu-riscv64-static ./hello) Hello world! real 0m0.082s user 0m0.025s sys 0m0.010s Cross-compiling, copying to VisionFive 2 board, and running there: bruce@i9:~$ time (riscv64-unknown-elf-gcc hello.c -o hello; scp hello vf:;ssh vf ./hello) hello 100% 23KB 1.9MB/s 00:00 Hello world! real 0m0.812s user 0m0.086s sys 0m0.000s Compiling and running directly on the VisionFive 2: user@starfive:~$ time gcc hello.c -o hello real 0m0.193s user 0m0.149s sys 0m0.044s user@starfive:~$ time ./hello Hello world! real 0m0.006s user 0m0.002s sys 0m0.004s So cross compile and emulate on i9-13900HX is about twice faster than native compile and native run directly on the $50 RISC-V board ... under 0.1s vs almost exactly 0.2s. Adding in two invocations of OpenSSH (at ~0.35s each) to cross compile then run on the board does make it slower, but it's still under 1 second. This becomes the preferred method for very large programs.