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Hi Kay, thanks for your quick response! a) I am using BUILT=20170615 on Ubuntu 14.04. b) xds_par c) My machine has 2 cores (4 threads possible). The dataset contains 3600 frames. On a different machine (Opensuse) running an older built (20170215), xds_par uses all available cores (12) when using the same XDS.INP / data. d) The input file (non modified as automatically generated at ESRF) contains the line: MAXIMUM_NUMBER_OF_PROCESSORS= 16. However when running xds_par the output says: ***** COLSPOT ***** (VERSION Jun 1, 2017 BUILT=20170615) 10-Jul-2017 INPUT PARAMETER VALUES ---------------------- MAXIMUM_NUMBER_OF_PROCESSORS= 1 (0: automatic choice of OpenMP threads) number of OpenMP threads used 1 MAXIMUM_NUMBER_OF_JOBS= 1 (0:automatic choice of forked main tasks) Everything else runs correctly. Cheers, Florian P.S.: I just checked the auto-processed files from ESRF who are using the same XDS version. Also here: MAXIMUM_NUMBER_OF_PROCESSORS= 1 (0: automatic choice of OpenMP threads) number of OpenMP threads used 1 On 10.07.2017 11:46, Kay Diederichs wrote: > 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 -- Dr. Florian Sauer Rudolf Virchow Zentrum für Experimentelle Biomedizin Josef-Schneider-Str. 2, Haus D15 97080 Würzburg