Hi Chengjjao, That works perfectly. Thank you very much. Silvia ________________________________ From: Chengjiao Ren <dlut_renchengjiao@163.com> Sent: Friday, 14 August 2020 12:37 AM To: Silvia Ceccacci (HDR) <silvia.ceccacci@hdr.mq.edu.au>; nektar-users@imperial.ac.uk <nektar-users@imperial.ac.uk> Subject: RE: [Nektar-users] Restarting a simulation from last data Hi Silvia, I normally use FieldConvert to reduce the number of files in a .fld folder before downloading flies from supercomputer, mpirun -np <nprocs> FieldConvert test.xml test.fld reconstruct-test.fld. To get a single *.fld file, <nprocs> = 1 should be used. Hope it helps! Kind regards, Chengjiao ===================================== 任珵娇；Chengiiao Ren， 博士研究生；Ph.D Candidate， 建设工程学部；Faculty of Infrastructure Engineering， 大连理工大学； Dalian University of Technology， 大连，中国 116024；Dalian，CHINA 116024. 电话，Phone：86-18504285808，61-413077330 电子邮箱，Email：dlut_renchengjiao@163.com<mailto:dlut_renchengjiao@163.com>; chengjiao.ren@outlook.com<mailto:chengjiao.ren@outlook.com>; ===================================== From: Silvia Ceccacci (HDR)<mailto:silvia.ceccacci@hdr.mq.edu.au> Sent: Thursday, 13 August 2020 12:42 PM To: nektar-users@imperial.ac.uk<mailto:nektar-users@imperial.ac.uk> Subject: [Nektar-users] Restarting a simulation from last data This email from silvia.ceccacci@hdr.mq.edu.au originates from outside Imperial. Do not click on links and attachments unless you recognise the sender. If you trust the sender, add them to your safe senders list<https://spam.ic.ac.uk/SpamConsole/Senders.aspx> to disable email stamping for this address. Dear all, I understand Nektar has a restart capability which involves renaming the last .fld output file as a .rst file. Then, configure the FUNCTION 'InitialConditions' accordingly. In case of large files, the .fld file is partitioned in files with names P0000000.fld, P0000001.fld, etc and the Info.xml file is generated. How do we generate the start file from the parallel partition? I assume a single .fld file is needed for restarting a simulation. Thank you for your help. Kind regards, Silvia