ONEGB
(double)work->pkg_dep_size / (double)ONEGB);
RunningPkgDepSize / (double)ONEGB, max3,
if (MaxWorkers > (int)((PhysMem + (ONEGB/2)) / ONEGB))
MaxWorkers = (PhysMem + (ONEGB/2)) / ONEGB;
PkgDepMemoryTarget *= ONEGB;