Pycuda CompileError with Anaconda on Windows

Question

I've just started looking into Cuda and especially PyCuda. I'm currently using Anaconda on Windows 7. I have installed Pycuda using the Anaconda Prompt and tried the following code, which I copied directly from the PyCuda documentation web page. However I've got an CompileError. Does anyone have any suggestion?

import pycuda.autoinit
import pycuda.driver as drv
import numpy

from pycuda.compiler import SourceModule
mod = SourceModule("""
__global__ void multiply_them(float *dest, float *a, float *b)
{
  const int i = threadIdx.x;
  dest[i] = a[i] * b[i];
}
""")

multiply_them = mod.get_function("multiply_them")

a = numpy.random.randn(400).astype(numpy.float32)
b = numpy.random.randn(400).astype(numpy.float32)

dest = numpy.zeros_like(a)
multiply_them(drv.Out(dest), drv.In(a), drv.In(b), block=(400,1,1),grid(1,1))

print(dest-a*b)

Traceback (most recent call last):

  File "<ipython-input-2-06c8e60d26ae>", line 12, in <module>
    """)

  File "C:\Users\Moritz\Anaconda3\lib\site-packages\pycuda\compiler.py",         line 291, in __init__
    arch, code, cache_dir, include_dirs)

  File "C:\Users\Moritz\Anaconda3\lib\site-packages\pycuda\compiler.py",    line 255, in compile
    return compile_plain(source, options, keep, nvcc, cache_dir, target)

  File "C:\Users\Moritz\Anaconda3\lib\site-packages\pycuda\compiler.py",   line 137, in compile_plain
    stderr=stderr.decode("utf-8", "replace"))

CompileError: nvcc compilation of C:\Users\Moritz\AppData\Loca \Temp\tmpst8z9hvc\kernel.cu failed

The only error in this code is a missing `=` in the kernel launch argument. Otherwise it runs without error- Are you certain that you actually have a working CUDA and PyCUDA installation? — talonmies, Jun 10 '17 at 06:38

score 1 · Accepted Answer · answered Jun 12 '17 at 11:09

1

Ok, solved the Problem. I've only had "Microsoft Visual Studio Express" installed, which, as it seems, does not support compiling 64bit applications. However, I've been running a 64bit Version of Anaconda on my PC. Installing Anaconda 32bit instead fixed the issue.

answered Jun 12 '17 at 11:09

Moritz90

63
3

please remember to come back in a few days and accept this answer so that this question falls off the unanswered list for the CUDA tag – talonmies Jun 13 '17 at 04:28

Pycuda CompileError with Anaconda on Windows

1 Answers1