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b0000409
2015 Jun 25
2
What are the restrictions around loading indirect constbuf values
Hello,
We recently tracked down a bug on Tesla GPUs (i.e. G80-GT218) whereby
it appears that instructions like
00000028: b5000409 08000780 add rn f32 $r2 $r2 neg c0[$a1]
00000040: b500060d 08004780 add rn f32 $r3 $r3 neg c0[$a1+0x4]
or with nvdisasm:
.headerflags @"EF_CUDA_SM12 EF_CUDA_PTX_SM(EF_CUDA_SM12)"
/*0000*/ FADD R2, R2, -c[0x0][A1+0x0]; /* 0x08000780b5000409 */...