compiler-errors - OpenCL : can multiplying by a float cause an internal error?

Question

我正在尝试使用OpenCL(Java包装器，使用Eclipse)对一些数据执行一堆计算。内核本身不包含计算。相反，它调用其他功能来完成工作。

现在，有一个似乎无效的功能。运行良好:

int scaled(floatMemory fMem, int a, float b){
    int result = indexAlloc(fMem);
    float a0 = getf(fMem,a,0);
    float a1 = getf(fMem,a,1);
    float a2 = getf(fMem,a,2);
    setf(fMem, result, a0, a1, a2);
    return 0;
}

但是，此代码会导致内部错误(请参阅倒数第二条语句):

int scaled(floatMemory fMem, int a, float b){
    int result = indexAlloc(fMem);
    float a0 = getf(fMem,a,0);
    float a1 = getf(fMem,a,1);
    float a2 = getf(fMem,a,2);
    setf(fMem, result, a0*b, a1*b, a2*b);
    return 0;
}

我尝试了其他一些逻辑测试，但发现浮点值'b'出现了问题(即无限或空)。 有人可以帮我验证一下吗？

PS:这是控制台上打印的内容:

#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x5a619b14, pid=7416, tid=12112
#
# JRE version: 7.0_25-b16
# Java VM: Java HotSpot(TM) Client VM (23.25-b01 mixed mode, sharing windows-x86 )
# Problematic frame:
# C  [igdbcl32.dll+0x79b14]  Delete+0x78a94
#
# Failed to write core dump. Minidumps are not enabled by default on client versions of Windows
#
# An error report file with more information is saved as:
# ~:\~\~\~\~\~\bin\hs_err_pid7416.log
#
# If you would like to submit a bug report, please visit:
#   http://bugreport.sun.com/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Answer 1

抱歉，这有点晚了，但也许可以对某人有所帮助。

事实证明，我试图返回的浮点数在离开函数后就被释放了，例如:

float sum(float a, float b) {
float x = a+b;
return x;
}

变量x在函数外部不存在，因此当我尝试从调用者函数访问它时，出现错误。解决的办法是设置我自己的缓冲区(使人痛苦)，以便变量在整个线程中保持完整性。