使用Thrust CUDA对对象进行排序 [英] Sorting objects with Thrust CUDA
问题描述
是否可以使用Thrust库对对象进行排序?
我有以下结构:
Is it possible to sort objects using the Thrust library? I have the following struct:
struct OB{
int N;
Cls *C; //CLS is another struct.
}
可以使用thrust来对OB数组进行排序N?你能提供一个简单的例子使用推力来排序对象?如果推力不能这样做,有没有任何其他CUDA库允许我这样做?
Is it possible to use thrust in order to sort an array of OB according to N? Can you provide a simple example on using thrust to sort objects? If thrust is not able to do so, is there any other CUDA libraries that allows me to do so?
推荐答案
thrust :: sort 显示它接受一个比较运算符。请参阅示例如何定义和使用这些示例。我没有测试这个,但基于这个例子,你所需要的是一个类似于这样的结构:
The docs for thrust::sort show it accepts a comparison operator. See in their example how those are defined and used. I haven't tested this, but based on the example, all you would need is a struct that looks something like this:
struct OBCmp {
__host__ __device__
bool operator()(const OB& o1, const OB& o2) {
return o1.N < o2.N;
}
};
然后调用 thrust :: sort(obs.begin obs.end(),OBCmp())
。
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