Hello, Since I haven't received a reply, I'll rephrase my original question. Is it safe to run, in parallel, executables compiled with the same -fprofile-generate=same_path flag? Will it be able to merge profile information, correctly and consistently, from several parallel runs? Should I send it to gcc@xxxxxxxxxxx, instead? Thanks Michael -- View this message in context: http://gcc.1065356.n5.nabble.com/Is-fprofile-generate-safe-for-parallel-make-tp909032p919068.html Sent from the gcc - Help mailing list archive at Nabble.com.