On 3 October 2017 at 05:31, Jan Vesely <jan.ves...@rutgers.edu> wrote: > On Fri, 2017-09-29 at 16:14 +0100, Emil Velikov wrote: >> Hi all, >> >> Currently nearly all the distributions I've seen* enable and use the ICD. >> Only Gentoo does not use it, but manages the OpenCL.so conflicts via eselect. > > to be fair, you can install and eselect ocl-icd. eselect switches > libOpenCL.so providers, and mesa is one of them. > Not sure I follow.
Can one eselect ocl-icd alongside and actual implementation (say Mesa)? 1) If not - you'll only have a dummy frontend, without an actual implementation. 2) Otherwise, the flow is as below: App -> opencl loader (ocl-icd's libOpenCL.so) -> opencl backend icd file -> opencl backend implementation (libMesaOpenCL.so) As Mesa is build without --enable-opencl-icd there's no icd file and no libMesaOpenCL.so. Mesa will only produce libOpenCL.so which will clash(?) with the ocl-icd one. So in a tl;dr: things seem flaky and/or broken. >> >> They have the ocl-icd library as a separate option, which makes me >> wonder how that's supposed to work. After all, for it to work the >> vendor package should: >> a) provided a binary not called libOpenCL.so (it could be called like >> that, but must be outside of ld's search path) >> b) provide a $foo.icd file, listing the ICD file/path name >> >> Most likely I'm having a dull moment somewhere and things work just fine. >> >> Considering that the --enable-opencl-icd is almost always set, I think >> we should change the default. > > Dieter recently reported that building with --enable-opencl-icd > produces broken libOpenCL.so library (in addition to client > libMesaOpenCL.so) [0]. It'd be nice if mesa libOpenCL.so could act as > ICD loader when built with --enable-opencl-icd. > I've shared some ideas in the thread. That said - deprecating/removing the toggle is a no-go for now, so lets just flip the switch. Thanks Emil _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/mesa-dev
