# cond import
try:
    from pynvml import *

    def print_gpu_utilization():
        nvmlInit()
        handle = nvmlDeviceGetHandleByIndex(0)
        info = nvmlDeviceGetMemoryInfo(handle)
        print(f"GPU memory occupied: {info.used // 1024 ** 2} MB.")

    def print_summary(result):
        print(f"Time: {result.metrics['train_runtime']:.2f}")
        print(f"Samples/second: {result.metrics['train_samples_per_second']:.2f}")
        print_gpu_utilization()

except ImportError:
    print("pynvml not found. GPU stats will not be printed.")

    def print_summary(result):
        print(f"Time: {result.metrics['train_runtime']:.2f}")
        print(f"Samples/second: {result.metrics['train_samples_per_second']:.2f}")

    def print_gpu_utilization():
        pass