Hello there, Recently, I have followed the instruction: http://scelementary.com/2015/04/25/openacc-in-gcc.html but to install gcc 5.2. we have used "yum" to upgrade lib: gomp, gmp, mpfr, and mpc, so they are all in current release. We use cuda-toolkit 7.5. The install is smooth, and compile the "pi.c" program successful. But when I run the generated executable, it gives error: libgomp: no device active I tried googling, that did not give much help. Anyone can help me here? Thanks! Wei Huang whuang@xxxxxxxxxxxx