Yes it is possible to change the size of the vector of ARM SVE (like A64FX) using the following code: #define PR_SVE_SET_VL 50 #define PR_SVE_GET_VL 51 #include #include int main(int argc, char** argv){ if(getenv(“VECBITS”)){ int svebitstoset=atoi(getenv(“VECBITS”)); std::cout