From: sunyeping (
Date: Tue Jan 10 2017 - 04:25:41 CST

I have removed the water in the dcd with catdcd and get a 1.7G dcd file, and successfully copied it to my local computer, but when I load it into vmd, the same error still occur.
Yeping------------------------------------------------------------------From:Ashar Malik <>Time:2017 Jan 10 (Tue) 18:18To:Norman Geist <>Cc:孙业平 <>; vmd-l <>Subject:Re: AW: vmd-l: why vmd cannot load the dcd trajectory?
Use catdcd ( to first get a small part of your big trajectory. Download/Visualise it to see if the trajectory is in tact. After you ensure that the trajectory is intact - you can do one of three things: 
1) rsync - the whole thing (as already suggested)2) use catdcd coupled with index files to get a desolvated trajectory (assuming your work only requires the protein and not waters) which would make the 14GB drop significantly to a smaller size.3) or if water is necessary use catdcd to make smaller trajectories out of your larger one. Say 2 trajectories each having 1/2 the frames of your larger one i.e. if total is 5000 frames you can pack from 0 to 2499 in the first and then 2500 till 4999 in the second. You can then download these smaller dcds and once all of them are downloaded you can merge them together to make 1 big trajectory (if need be)
Before 1 or 2 or 3 ensure the trajectory is intact. 
Write back if this doesn't work for you.