如何使用 Visual Profiler 分析 PyCuda 代码?

问题描述

当我创建一个新会话并告诉 Visual Profiler 启动我的 python/pycuda 脚本时，我收到以下错误消息:Execution run #1 of program '' failed, exit code: 255

When I create a new session and tell the Visual Profiler to launch my python/pycuda scripts I get following error message: Execution run #1 of program '' failed, exit code: 255

这些是我的偏好:

• 启动:python "/pathtopycudafile/mysuperkernel.py"
• 工作目录:"/pathtopycudafile/mysuperkernel.py"
• 参数:[empty]

我在 Ubuntu 10.10 下使用 CUDA 4.0.64位.分析编译的示例工作.

I use CUDA 4.0 under Ubuntu 10.10. 64Bit. Profiling compiled examples works.

附言我知道 SO 问题 如何在 Linux 中分析 PyCuda 代码?，但似乎是一个不相关的问题.

p.s. I am aware of SO question How to profile PyCuda code in Linux?, but seems to be an unrelated problem.

小例子

pycudaexample.py:

pycudaexample.py:

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))

pycuda.autoinit.context.detach()

示例设置

错误信息

推荐答案

您为计算分析器指定可执行文件的方式有问题.如果我在您发布的代码的顶部放了一条井号线:

There is something wrong with the way you are specifying the executable to the compute profiler. If I put a hash bang line at the top of your posted code:

#!/usr/bin/env python

然后给python文件可执行权限，计算分析器运行代码没有抱怨，我得到这个:

and then give the python file executable permissions, the compute profiler runs the code without complaint and I get this:

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