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我想通过一个类到iPython并行执行。实际上,这段代码会运行,但每次都会加载“时区”。这个类每个负载需要大约10s,所以这个开销是不可接受的,除非它只发生一次,或者每个核心发生一次。 我对并行化非常陌生,现在我想知道将进口移出函数。至少我认为这是正确的做法。传递类到iPython并行
from IPython import parallel
clients = parallel.Client()
lview = clients.load_balanced_view()
lview.block = True
lats = [32.21, 34.98]
lons = [109.45, -102.4]
times = ['2014-03-12T16:20:44.000000000Z', '2014-03-12T15:48:52.000000000Z']
@lview.parallel()
def f(lats, lons, times):
import sys,os
sys.path.append("../utils/") # For grabbing 'Timezone'
import Timezone as Timezone
tz = Timezone.Timezone()
# Use tz to compute local time
a = tz.compute_local_time(lats, lons, times)
return a
%time f.map(lats, lons, times)
结果:在时间(约22秒),
in sync results <function __call__ at 0x105d2db18>
CPU times: user 700 ms, sys: 232 ms, total: 932 ms
Wall time: 11.6 s
Out[15]:
[('Asia/Chongqing', '2014-03-13 00:20:44'),
('America/Chicago', '2014-03-12 10:48:52')]
结果双如果I双输入数据的长度。 我怎样才能通过tz
并让每个核心都调用Timezone
方法。