Hi Vinod,<br><br>Almost 6 millions tracks generated! No wonder that took a while...<br><br>Apart from running on a faster computer (i.e. multi-core), the simplest way to get the tracking to run faster is to use a more targeted seed ROI, to increase the proportion of tracks that actually reach the intended destination. If you're already using a very focused ROI, then maybe the fact that you are getting 1 in 5000 tracks to reach your target ROI is telling you that the tract is a very low probability one... Maybe your seed region is a bit off? <br>
<br>And running on a grid computer sounds like it's not going to work. The software is multithreaded, and will run on a multi-core system, but not on a distributed network cluster - it's a very different type of architecture...<br>
<br>Not sure if that helps...<br><br>Cheers!<br><br>Donald.<br><br><br><div class="gmail_quote">On Wed, May 6, 2009 at 3:39 PM, vinod kumar <span dir="ltr"><<a href="mailto:mail.vinod@yahoo.com">mail.vinod@yahoo.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><table border="0" cellpadding="0" cellspacing="0"><tbody><tr><td style="font-family: inherit; font-style: inherit; font-variant: inherit; font-weight: inherit; font-size: inherit; line-height: inherit; font-size-adjust: inherit; font-stretch: inherit;" valign="top">
Dear mrtrix users and donald, <br><br>greetings :)<br><br>It was nice to see you in hawaii :)<br><br>I tried to do some new tractography, by including several -exclude ROIs. ( as follows) <br><br>>streamtrack SD_PROB $orig2_dir/CSD12_sf06.mif -seed $orig2_dir/roi/roi1.nii -mask $orig2_dir/mask.mif $orig2_dir/results/roi1_track.tck -include $orig2_dir/roi/roi_2.nii -exclude $orig2_dir/roi/roi_3.nii -exclude $orig2_dir/roi/roi_4.nii<br>
<br>> 5801844 generated, 1000 selected [100%]<br><br><br>this took almost a day. Is there some way I can reduce the calculation time ? or can run this command on sun grid ( parallel on different machines). We have sun grid engine for few software, but I don't know how to incroporate mrtrix in that. <br>
<br>Thanx <br><br>vinod<br><br><br><br><br></td></tr></tbody></table><br>
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<br></blockquote></div><br><br clear="all"><br>-- <br>Jacques-Donald Tournier (PhD)<br>Brain Research Institute, Melbourne, Australia<br>Tel: +61 (0)3 9496 4078<br>