我可以在cuda卡上实际分配多少内存

#include<stdio.h>
#include <cuda_runtime.h>

int main() {
    size_t free_mem, total_mem;
    cudaDeviceProp prop;
    int device;

    cudaGetDevice(&device);
    cudaGetDeviceProperties(&prop, device);
    cudaMemGetInfo(&free_mem, &total_mem);

    printf("Total memory: %lu bytes\n", total_mem);
    printf("Free memory: %lu bytes\n", free_mem);

    return 0;
}