赛通这个错位的阵列是怎么回事？

Question

%%cython -f -c=-O3 -c=-fopenmp --link-args=-fopenmp
from cython.parallel import parallel, prange
from libc.stdlib cimport abort, malloc, free
cdef int idx, i, n = 100
cdef int k
cdef int * local_buf
cdef int size = 10
cdef void func(int* lb) nogil:
    cdef int j
    for j in xrange(size):
        lb[j] += -1*j
local_buf = <int *> malloc(sizeof(int) * size)
with nogil, parallel():
    if local_buf == NULL:
        abort()
    # populate our local buffer in a sequential loop
    for i in xrange(size):
        local_buf[i] = i * 2
    # share the work using the thread-local buffer(s)
    for k in prange(n, schedule='guided'):
        func(local_buf)
for i in xrange(size):
    print local_buf[i]
free(local_buf)
0
-98
-196
-294
-392
-490
-588
-686
-784
-882

编辑：上面的块显示了一次运行后的输出，但local_buf中的内容似乎每隔一段时间就会更改。这是怎么回事？

Answer 1

给出的代码的结果似乎是合理的，你每次运行实际上都会得到不同的结果吗？

这应该是常规的python等价物：

size = 10
n = 100
lst = [i*2 for i in range(size)]
for i in range(n):
    for j in range(size):
        lst[j] += -1*j
print lst
#[0, -98, -196, -294, -392, -490, -588, -686, -784, -882]