> What did you expect for -j alone? an error? No, as is standard in gnu make, a new process for any target that can be processed (i.e. unlimited).
>> ... check-fortran seems to be limited to about ~5 parallel targets ... > >Running the make with -j8 gives 7 directories gfortran[1-6]? in gcc/testsuite/. >Note that the load balancing could be improved: few minutes with a single >thread >over ~20 minutes. I'd like to have roughly 32 directories (or as many of the -jN allows for).