Dear all, My Refine3D run on 2 x 1070 GPUs with 3 MPI proc and 2 threads under Ubuntu Mate 14.04 always stalls at iteration 2. Nvidia-smi shows that both GPUs are running, each with about 7700 MB GPU memory usage and Top shows three instances of relion_refine_mpi running on 3 CPUs with each at ~ 100% BUT NOTHING HAPPENS FOR HOURS. Without GPU acceleration the job runs normally. I have never seen anything alike on another workstation so it is probably due to a wrong setup or hardware. Does anybody have a hint? Thanks, Dieter ------------------------------------------------------------------------ Dieter Blaas, Max F. Perutz Laboratories Medical University of Vienna, Inst. Med. Biochem., Vienna Biocenter (VBC), Dr. Bohr Gasse 9/3, A-1030 Vienna, Austria, Tel: 0043 1 4277 61630, Fax: 0043 1 4277 9616, e-mail:[log in to unmask] ------------------------------------------------------------------------