Pycuda_module.ipynb

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     "text": [
      "D:\\Anaconda3\\envs\\python35\\lib\\site-packages\\ipykernel\\__main__.py:12: UserWarning: The CUDA compiler succeeded, but said the following:\n",
      "nvcc warning : The 'compute_20', 'sm_20', and 'sm_21' architectures are deprecated, and may be removed in a future release (Use -Wno-deprecated-gpu-targets to suppress warning).\r\n",
      "kernel.cu\r\n",
      "\n"
     ]
    }
   ],
   "source": [
    "import pycuda.autoinit\n",
    "import pycuda.driver as drv\n",
    "import numpy\n",
    "\n",
    "from pycuda.compiler import SourceModule\n",
    "mod = SourceModule(\"\"\"\n",
    "__global__ void multiply_them(float *dest, float *a, float *b)\n",
    "{\n",
    "  const int i = threadIdx.x;\n",
    "  dest[i] = a[i] * b[i];\n",
    "}\n",
    "\"\"\")\n",
    "\n",
    "multiply_them = mod.get_function(\"multiply_them\")\n",
    "\n",
    "a = numpy.random.randn(400).astype(numpy.float32)\n",
    "b = numpy.random.randn(400).astype(numpy.float32)\n",
    "\n",
    "dest = numpy.zeros_like(a)\n",
    "multiply_them(\n",
    "        drv.Out(dest), drv.In(a), drv.In(b),\n",
    "        block=(400,1,1), grid=(10,1))\n",
    "\n",
    "print (dest-a*b)"
   ]
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