Dear Freesurfers, I'd like to ask how could we recon-all multiple participants at the same time? My laptop has a 32G ram and a 8-core-intel-Core-i7 CPU, i expect it could speed up the surface construction by running several participants simultaneously. When i use the following command: 'foreach i (1 2 3....);recon-all -subjid sub$i -all -openmp8;end', each participant needs 4-5 hours. Although this is much faster than the typical time consumption as stated in freesurfer wiki, i notice only 3 out my 32G working memory is used under such command. So I am wondering if there are some other ways to make full use of the working memory and make the surface construction go even faster. I have tried to open 8 terminal windows, each for a separate participant, and for each window, the command was like this, 'recon-all sub01 -all openmp 8'. It turned out the analysis ran extremely slow, none of the subjects finished even after 36 hours, the CPU was 100% used, but still no more than 7 of the 32G working memory was occupied. So, question, is it possible for me to make the analysis more quickly, and if so, how？ Looking forward to your informations, and thank you a lot! Chen