Good morning Cyril, Thanks for answering, yes I used 1.2.0. I did 30 main iterations, 4 CG and 10 for TV (taken from example). Possibly I could reduce the number of TV iterations?
Looking forward to your optimizations. Cheers Guillaume Dr. Guillaume Landry Ludwig Maximilians University (LMU) Munich Medical Physics Am Coulombwall 1 85748 Garching Tel:+49 (0) 89 289-14077 Fax:+49 (0) 89 289-14072 On 06/01/2016 09:34 AM, Cyril Mory wrote: > Hi Guillaume, > > Can you also tell how many iterations you have performed (main loop, > conjugate gradient, and TV) ? > If you are performing 30 iterations of the main loop, with 4 CG > iterations, then considering the size of your data I do not think > anything is wrong. Reconstructing a smaller volume will give you a > large speedup (time is almost linear with number of voxels), so I > would recommend that you try again with the smallest possible volume, > i.e. the bounding box of your patient. > > Are you running the release 1.2.0 version ? If so, note that on the > master branch of the git repository, I am adding optimizations for the > 4D reconstructions. It is not fully functional at the moment, but I'm > currently working 100% of my time on it. I will let you know about the > next updates. > > Regards, > Cyril > > On 05/31/2016 07:48 PM, [email protected] wrote: >> >> Hi Simon, >> >> Thanks for mailing list suggestion. My initial question was about >> typical reconstruction times for rtkfourdrooster. What I tried is >> summarized below: >> >> -Volume size was 410 410 264 and could be easily reduced by a good >> margin. >> >> -The GPU is quadro M4000 with 8GB >> >> -about 2300 256x256 projections with shifted elekta panel (so called >> M20) >> >> -10 phases >> >> -for the motion mask at the moment I just used the FOV mask for first >> try. >> >> --gamma_time 0.0001 >> --gamma_space 0.0001 >> - spacing 1 1 1 >> --niter 30 >> --cgiter 4 >> --tviter 10 >> >> >> Recon time was about 5-6 hours. I saw about 4 Gb used on the card. >> >> The image looked nice, albeit with the TV "feel/plastic-y". >> >> Thanks for your feedback >> Guillaume >> >> >> >> >> Quoting Simon Rit <[email protected]>: >> >>> Hi Guillaume, >>> I'm adding RTK user list to this conversation, it's better to have >>> these conversations on the mailing list IMO. Can you tell us what's >>> the volume size and the GPU? >>> Cyril is ROOSTER's dev, maybe he could comment on recon times. >>> Simon >>> >>> On Tue, May 31, 2016 at 5:29 PM, <[email protected]> >>> wrote: >>>> Hi Simon, >>>> >>>> I tried the rooster recon. I used the parameters from the example >>>> page. The results looks rather nice but it took several hours to >>>> run (5-6). Its a big dataset of about 2000 256x256 projections. >>>> >>>> Guillaume > _______________________________________________ Rtk-users mailing list [email protected] http://public.kitware.com/mailman/listinfo/rtk-users
