我正在编写 OpenCL 程序并在构建时出现此错误:
Build Log:
ptxas application ptx input, line 268; error : State space mismatch between instruction and address in instruction 'ld'
ptxas application ptx input, line 269; error : State space mismatch between instruction and address in instruction 'ld'
ptxas application ptx input, line 270; error : State space mismatch between instruction and address in instruction 'ld'
ptxas application ptx input, line 271; error : State space mismatch between instruction and address in instruction 'ld'
....(same error on several more lines)
相应的 ptx 行(自动生成)是:
ld.local.u32 %r1913, [demands$inst_to_cust+16];
ld.local.u32 %rl10, [demands$inst_to_cust+12];
ld.local.u32 %rl12, [demands$inst_to_cust+8];
ld.local.u32 %rl14, [demands$inst_to_cust+4];
ld.local.u32 %rl16, [demands$inst_to_cust];
这是我编写的函数:
int
demands(cl_ushort ball, cl_ushort bin,
__global const struct problem *problem,
__constant const struct demand *demand,
const cl_ushort soln[BALL_MAXNUM],
struct demand_op ops[DEMAND_MAXOPS],
__global cl_ushort debug_data[DEBUG_LEN])
{
int i, k = demand->data[0];
int serv_to_rack[] = {0, 1, 1};
int inst_to_cust[] = {0, 0, 0, 1, 1};
int maxinst_per_rack[] = {2, 1};
int cust_num = inst_to_cust[ball];
int max = ball, min = ball, count = 1;
int max_in_rack = maxinst_per_rack[cust_num];
for (i = ball; i < NUM_BALLS; i++) {
if (inst_to_cust[i] == ball) max = i;
else break;
}
.....
}
错误的原因是什么?如何解决?
最佳答案
编译器对 demand
结构的位置感到困惑。 “状态空间”是内存类型的ptx-talk。 ld.local
期望源位于本地内存中,但在您的情况下,它看起来实际上位于常量内存中。
我不熟悉 OpenCL,但在 CUDA 中,__constant__
限定符将变量放在具有特殊缓存语义的常量内存中。它与 C++ 中的 const
无关。编译器可能会混淆,因为您将它们一起使用。
尝试从 __constant const struct demand *demand
行中删除一个或两个 __constant
和 const
。
关于c++ - OpenCL:指令和地址之间的状态空间不匹配,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/11289893/