Question

我正在尝试使用并行python（PP软件包）在python 2.7中执行一个fortran子例程。但是当我使用pp.server（）。submit（...）执行它时，什么也没发生。我可能执行错了，我使用了here所述的numpy.f2py.compile()。有人可以告诉我这是否正确吗？如果没有，我应该怎么改变？
只是说，鉴于其摘自博士学位论文（code，paper），所以该代码几乎肯定是正确的。

在名为“ design_operation”的python 2.7模块中实现的子例程为：

import numpy.f2py
fsource = '''
subroutine matrix_op(grid_x,grid_t,eval_grid,pas,K,L,M,C)
  COMPLEX :: i=(0.0,1.0)
  INTEGER , intent(in) :: K,L,M
  REAL , intent(in) :: pas
  INTEGER :: u,v,w
  REAL , dimension(1:M) , intent(in) :: grid_x
  REAL , dimension(1:K) , intent(in) :: grid_t
  REAL , dimension(1:L) , intent(in) :: eval_grid
  COMPLEX, dimension(1:L,1:M) , intent(out) :: C

  do u=1,L
     do v=1,M
        do w=1,K
           C(u,v) = C(u,v) - i*pas*grid_t(w)*grid_x(v)*exp(-i*grid_t(w)*grid_x(v)*eval_grid(u))
        end do
     end do
  end do
  end subroutine matrix_op
  '''
numpy.f2py.compile(fsource, modulename='design_operation', verbose=0)

然后，我这样称呼它：

job_server.submit(func=list_append,
                                  args=(grid_x, grid_t, sub_eval[k,:], pas_f,),
                                  modules=('numpy as np','design_operation as fdp',)

实际上处于循环中，应在以下位置执行：

job_server = pp.Server()
thread_number = job_server.get_ncpus()
...some unimportant code ...
jobs = []
for k in range(thread_number): 
    jobs.append(job_server.submit(func=list_append,
                                  args=(grid_x, grid_t, sub_eval[k,:], pas_f,),
                                  modules=('numpy as np','design_operation as fdp',)))

for i,job in enumerate(jobs):
    if i == 0:
        dM = job() 
    else:
        dM = np.concatenate((dM, job()))

job_server.destroy()
return dM

我总是收到以下错误：零维数组无法连接。

因此，我认为错误是由于任务执行不正确而引起的，但也许是我误会了。

堆栈错误为：

An error has occured during the function execution
Traceback (most recent call last):
  File "C:\ProgramData\Anaconda3\envs\project\lib\site-packages\ppworker.py", line 90, in run
    __result = __f(*__args)
  File "<string>", line 2, in list_append
AttributeError: 'module' object has no attribute 'matrix_op'
An error has occured during the function execution
Traceback (most recent call last):
  File "C:\ProgramData\Anaconda3\envs\project\lib\site-packages\ppworker.py", line 90, in run
    __result = __f(*__args)
  File "<string>", line 2, in list_append
AttributeError: 'module' object has no attribute 'matrix_op'
Traceback (most recent call last):

  File "<ipython-input-89-6cb5b50fd813>", line 5, in <module>
    dM = np.concatenate((dM, job()))#

ValueError: zero-dimensional arrays cannot be concatenated

PS：我认为这里有一些不必要的代码，因此为了更加清晰起见，我没有将其包括在内+ func = list_append的参数正确。

Answer 1

我注意到您的代码似乎没有将K, L, M和C变量传递给Fortran例程。但是，K, L, M用于确定某些数组的维数，也用作循环计数器。编译器很可能将这些值设置为默认值0，或者更可能被Python设置为默认值None。这将解释您的错误消息“ ValueError：零维数组无法连接”。

通过并行python执行fortran子例程无法执行

1 个答案: