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Hi Florian, difficult to say without knowing more details. a) you should be using the XDS version that identifies itself with BUILT=20170615 b) are you using xds or xds_par? Only xds_par is parallelized, xds is single-threaded c) I assume your machine has >1 core, and a DELPHI-sized batch of frames has >1 frames d) xds_par will not use more threads (specified as MAXIMUM_NUMBER_OF_PROCESSES) than your machine has cores AFAICT you are the only person with this problem, so there must be something special about your input or setup. best, Kay On Mon, 10 Jul 2017 11:25:07 +0200, Florian Sauer <[log in to unmask]> wrote: >Dear all, > >I have recently installed the latest version of XDS (Linux 64 bit) and >found that xds_par is only using a single thread despite having >MAXIMUM_NUMBER_OF_PROCESSORS= 16 >In the latest version (licensed till Sep 2017) XDS is using the full >number of threads with the same XDS.INP / data. > >Does anything have to be specified differently in the new version? > >Best wishes, > >Florian > >-- >Dr. Florian Sauer >Rudolf Virchow Zentrum für Experimentelle Biomedizin >Josef-Schneider-Str. 2, Haus D15 >97080 Würzburg