问题描述
因此,我正在运行此脚本,该脚本使用多处理池并行运行一个函数。我的代码格式较早:
with mp.pool(n_workers) as pool:
for i in range(some_iterations):
for ele in some_list:
soln = pool.starmap(some_function,some_arguments)
add_soln_to_json(soln)
但是我进行了更改,必须检查一些条件并额外运行starmap。所以我的代码变成了:
with mp.pool(n_workers) as pool:
for i in range(some_iterations):
for ele in some_list:
soln = pool.starmap(some_function,some_arguments)
add_soln_to_json(soln)
if(some_condition):
soln = pool.starmap(some_function,some_arguments)
add_soln_to_json(soln)
我的程序现在不断给我操作系统错误:打开的文件太多。我不明白为什么添加一个额外的步骤运行相同的功能,但参数略有不同会导致此错误。同样,由于所有内容都在上下文管理器下,因此不关闭进程也没有问题。还是应该用手动打开和关闭多处理池来代替它?
这是错误回溯:
Traceback (most recent call last):
File "/share/pkg.7/python3/3.7.7/install/lib/python3.7/multiprocessing/resource_sharer.py",line 149,in _serve
send(conn,destination_pid)
File "/share/pkg.7/python3/3.7.7/install/lib/python3.7/multiprocessing/resource_sharer.py",line 50,in send
reduction.send_handle(conn,new_fd,pid)
File "/share/pkg.7/python3/3.7.7/install/lib/python3.7/multiprocessing/reduction.py",line 179,in send_handle
with socket.fromfd(conn.fileno(),socket.AF_UNIX,socket.SOCK_STREAM) as s:
File "/share/pkg.7/python3/3.7.7/install/lib/python3.7/socket.py",line 463,in fromfd
nfd = dup(fd)
OSError: [Errno 24] Too many open files
解决方法
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