On 08/08/2018 00:59, Alexis Murzeau wrote: > severity 903514 important > thanks > >> Reassigning to glibc with affects on openblas and gimp as this is caused >> by a deadlock inside glibc. > > Done. > > Lowering severity as this does not render any package unusable by > themselves, but only a combination of them (GIMP + OpenBLAS). > > I think a workaround solution against GIMP OpenBLAS should be done as > I'm not sure a good solution will emerge in glibc given attempts done in > the past. The work to be done seems non trivial. > > My though on possible solutions: > * Add a breaks between GIMP and OpenBLAS > * Disable TLS in OpenBLAS build (if possible, but this would cause a > performance loss for users that use OpenBLAS without gimp) > * Add a delay in GIMP to not load then close libraries too fast (so > OpenBLAS threads are fully initialized when dl_close is called on it) > Hi, I've posted a issue on openblas upstream project [0] and they suggested some solutions. One of them is to disable the use of compiler supported TLS and instead use pthreads. I tested this and it seems to fix deadlocks while starting gimp (I tried without arguments, with a non existing file and with an existing file). I've pushed a merge request with the patch at [1]. I've also asked openblas upstream if this patch could be a good solution. In that case would it be possible to have this patch tested for ones who have major instabilities with gimp + openblas ? Thanks :) -- Alexis Murzeau PGP: B7E6 0EBB 9293 7B06 BDBC 2787 E7BD 1904 F480 937F
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