我见过很多生成随机数数组的方法。但我想生成一个随机数。C++ 中有没有像 rand() 这样的函数?我不需要一系列随机数。我只需要在内核内生成一个随机数。有没有内置函数可以生成随机数?我已经尝试过下面给出的代码,但它不起作用。
import numpy as np
import pycuda.autoinit
from pycuda.compiler import SourceModule
from pycuda import gpuarray
code = """
#include <curand_kernel.h>
__device__ float getRand()
{
curandState_t s;
curand_init(clock64(), 123456, 0, &s);
return curand_uniform(&s);
}
__global__ void myRand(float *values)
{
values[0] = getRand();
}
"""
mod = SourceModule(code)
myRand = mod.get_function("myRand")
gdata = gpuarray.zeros(2, dtype=np.float32)
myRand(gdata, block=(1,1,1), grid=(1,1,1))
print(gdata)
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错误类似于:
/usr/local/cuda/bin/../targets/x86_64-linux/include/curand_poisson.h(548): error: this declaration may not have extern "C" linkage
/usr/local/cuda/bin/../targets/x86_64-linux/include/curand_discrete2.h(69): error: this declaration may not have extern "C" …
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