Different results from printf and cuda-gdb

[peiqi.zhang97]

The problem is solved, see:

Different results from printf and cuda-gdb

[image] I’m probing register c[0], c[1], c[2], c[3] in a CUDA program. The strange thing is that the results shown in CUDA-GDB is correct, but the results from printf is wrong. The program finally write back wrong results. I attach my code here, you can run it with: cuda.zip (6.0 KB) nvcc -o mma_sp runner_mma_sp.cu -arch sm_80 -Xcompiler -fopenmp Can anyone tell me what’s going on? Thanks in advance. cuda-gdb version:12.6