问"nvcc致命:在路径中找不到编译器'cl.exe‘“

EN

import  pycuda.driver as cuda
import pycuda.autoinit
from pycuda.compiler import SourceModule

import numpy

a = numpy.random.randn(4,4)
a = a.astype(numpy.float32)
a_gpu = cuda.mem_alloc(a.nbytes)
cuda.memcpy_htod(a_gpu,a)#transfer the data to the GPU

#executing a kernel
#function: write code to double each entry in a_gpu.
#we write the corresponding CUDA C code, and feed it into the constructor of pycuda.compiler.SourceModule
mod = SourceModule("""
    __global__ void doublify(float *a)
    {
        int idx = threadIdx.x + threadIdx.y*4;
        a[idx] *= 2;
    }
    """)

#If there aren’t any errors, the code is now compiled and loaded onto the device. We find a reference to our pycuda.driver.Function and call it, specifying a_gpu as the argument, and a block size of 4x4:
func = mod.get_function("doublify")
func(a_gpu, block=(4,4,1))

#Finally, we fetch the data back from the GPU and display it, together with the original a:
a_doubled = numpy.empty_like(a)
cuda.memcpy_dtoh(a_doubled, a_gpu)
print a_doubled
print a

Traceback (most recent call last):
  File "G:/myworkspace/python2.7/cuda/test.py", line 24, in <module>
    """)
  File "D:\python2.7\lib\site-packages\pycuda\compiler.py", line 265, in __init__
    arch, code, cache_dir, include_dirs)
  File "D:\python2.7\lib\site-packages\pycuda\compiler.py", line 255, in compile
    return compile_plain(source, options, keep, nvcc, cache_dir, target)
  File "D:\python2.7\lib\site-packages\pycuda\compiler.py", line 137, in compile_plain
    stderr=stderr.decode("utf-8", "replace"))
CompileError: nvcc compilation of c:\users\gl\appdata\local\temp\tmp8poxqp\kernel.cu failed
[command: nvcc --cubin -arch sm_50 -m64 -Id:\python2.7\lib\site-packages\pycuda\cuda kernel.cu]
[stdout:
nvcc fatal   : Cannot find compiler 'cl.exe' in PATH

]

raceback (most recent call last):
  File "G:\myworkspace\python2.7\cuda\test.py", line 24, in <module>
    """)
  File "D:\python2.7\lib\site-packages\pycuda\compiler.py", line 265, in __init__
    arch, code, cache_dir, include_dirs)
  File "D:\python2.7\lib\site-packages\pycuda\compiler.py", line 255, in compile
    return compile_plain(source, options, keep, nvcc, cache_dir, target)
  File "D:\python2.7\lib\site-packages\pycuda\compiler.py", line 147, in compile_plain
    + (stdout+stderr).decode("utf-8", "replace"), stacklevel=4)
  File "D:\python2.7\lib\idlelib\run.py", line 36, in idle_showwarning_subproc
    message, category, filename, lineno, line))
  File "D:\python2.7\lib\idlelib\PyShell.py", line 65, in idle_formatwarning
    s += "%s: %s\n" % (category.__name__, message)
UnicodeEncodeError: 'ascii' codec can't encode characters in position 147-168: ordinal not in range(128)