On Fri, Jun 10, 2016 at 11:31:33 +0200, Jakub Jelinek wrote: > On Fri, Jun 10, 2016 at 09:39:02AM +0200, Thomas Schwinge wrote: > > But I'm actually confused as to seeing libgomp.so in that list -- given > > the conflict of which compiler installations' libgomp.so "wins", I wonder > > how it can be working that some of the functions in there are supposed to > > behave differently on/are compiled differently for target vs. offloading > > target? Or did I do/understand something wrong? For a lot of other > > For intelmic offloading, I believe all the libraries should be the same > (unless one chooses e.g. different tuning or ISA in between the two compiler > installations), including libgomp, so one should be able to just use the > libraries from the primary compiler. At least that has been the goal, > omp_is_initial_device should be handled by overriding the symbol in the > magic executable.
Right, currently there is no difference between host and mic libraries in gcc. > For emul certainly, for XeonPhi KNL PCIe HW, I haven't had a possibility to > see > it in action yet, so I don't know how exactly is the filesystem typically > handled, if the offloading device has e.g. NFS mount of the host's > filesystem, or if all the libraries are always copied over on demand over > the bus, whatever. Some libraries are copied during the boot of the card (e.g. libc.so), others are copied during the first offload from the app (e.g. libgomp.so). -- Ilya
