为opencl嵌套内核函数

Nesting kernel functions for opencl

本文关键字：函数内核嵌套 opencl 更新时间：2023-10-16

我有一个相当复杂的mql5 for循环代码集，需要通过opencl运行。这意味着我需要能够让一些内核函数调用其他函数。因此，我尝试了这个简单的代码，当我通过它调用另一个函数时，它无法创建程序（错误5105）。为什么？

               const string _cl_source=
                "                                                      rn"
                "                                                      rn"
                "__kernel void Tester()                                rn"
                "{                                                     rn"
                "                                                      rn"
                "  float _margin = 10f;                                 rn"
                "  float _balance = 10f;                                rn"
                "  float _equity = 10f;                                 rn"
                "  float _openprice = 10f;                              rn"
                "  float _closeprice = 10f;                             rn"
                "  float _position = 10f;                               rn"
                "                                                      rn"
/*fails on adding this line*/"  CouponReset(_margin,_balance,_equity,_openprice,_closeprice,_position);rn"
                "                                                      rn"
                "}                                                     rn"
                "                                                      rn"
                "                                                      rn"
                "__kernel void CouponReset(float margin,                     rn"
                "                   float balance,                      rn"
                "                   float equity,                      rn"
                "                   float openprice,                      rn"
                "                   float closeprice,                     rn"
                "                   float position)               rn"
                "{                                                     rn"
                "  position = 0f;                         rn"
                "  openprice = 0f;                         rn"
                "  closeprice = 0f;                         rn"
                "  balance  = equity;                         rn"
                "  margin  = balance;                         rn"
                "                                                      rn"
                "}                                                     rn"
                "                                                      rn";

EDIT：实际上，我已经看过了，可以从另一个内核调用内核。但是，您不应该这样做，因为这可能会导致以后出现问题（特别是如果您使用__local内存）。

应用程序中的关键问题只是0.0f浮动。

您还可以执行一个由两个内核调用的单独函数。其中一个只是函数的包装器。

void _CouponReset(float margin,                     
                   float balance,                      
                   float equity,                      
                   float openprice,                      
                   float closeprice,                     
                   float position)               
{                                                     
  position = 0.0f;                         
  openprice = 0.0f;                         
  closeprice = 0.0f;                         
  balance  = equity;                         
  margin  = balance;                                         
} 

__kernel void Tester()                                
{                                                     
  float _margin = 10.0f;                                 
  float _balance = 10.0f;                                
  float _equity = 10.0f;                                 
  float _openprice = 10.0f;                              
  float _closeprice = 10.0f;                             
  float _position = 10.0f;                               
  _CouponReset(_margin,_balance,_equity,_openprice,_closeprice,_position);
}     

__kernel void CouponReset(float margin,                     
                   float balance,                      
                   float equity,                      
                   float openprice,                      
                   float closeprice,                     
                   float position)               
{                                                     
  _CouponReset(margin, balance, equity, openprice, closeprice, position);                                         
}