问题描述
我正在尝试使用Numba jit在dask数据帧上的GPU上运行。 代码如下。
@jit(target='cuda')
def return_with_trip_times(month):
duration = month[['tpep_pickup_datetime','tpep_dropoff_datetime']].compute()
#pickups and dropoffs to unix time
duration_pickup = [convert_to_unix(x) for x in duration['tpep_pickup_datetime'].values]
duration_drop = [convert_to_unix(x) for x in duration['tpep_dropoff_datetime'].values]
#calculate duration of trips
durations = (np.array(duration_drop) - np.array(duration_pickup))/float(60) #durations is in minutes
#append durations of trips and speed in miles/hr to a new dataframe
new_frame = month[['passenger_count','trip_distance','pickup_longitude','pickup_latitude','dropoff_longitude','dropoff_latitude','total_amount']].compute()
new_frame['trip_times'] = durations
new_frame['pickup_times'] = duration_pickup
new_frame['Speed'] = 60*(new_frame['trip_distance']/new_frame['trip_times']) #60 multiplied to convert mins to hrs
#speed is in miles/hr
return new_frame
我收到以下错误。
ValueError: cannot determine Numba type of <class 'pandas.core.frame.DataFrame'>
我检查了numba(jit)的文档,并在其中写明dask数据框可用于numba。请帮忙。
解决方法
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