From: John Stone (
Date: Thu Dec 17 2020 - 22:49:39 CST

  I've posted a new V5 build that includes the corrected DCD plugin
(and has the VMD app icon assigned per usual). Give it a try and
let me know how it works for you.

Best regards,
  John Stone

On Thu, Dec 17, 2020 at 01:35:18AM +0000, Jason Smith wrote:
> Hi,
> just installed this today (vmd194a50win64-SetupV3) and have been unable to
> open large trajectories :(. BTW I am very very excited to be able to
> address larger amounts of memory on a 64-bit version. Thank You!
> Through some trial and error it seems like the problem lies in the file
> size, not whether the file fits in memory. For e.g.
> 977 MB file in a50 opens, a 2.9 GB does not (28 GB free memory, 32
> installed). For 1.9.3 in the past I always found it would crash when
> trying to use more than around 1.1 - 1.3 GB of memory.
> What's more is that I can't use frame striding to get around it. In 1.9.3
> and 4a48 I can open up my 100 GB files using striding, but I can't open
> the 2.9 GB in a50 using striding.
> I also repeatedly opened a 750 MB DCD in a50 until task manager indicated
> 4.5 GB usage by VMD, so not a 32-bit memory limit. I also tried to open
> the files from HDD vs NVME in case it was a hardware issue.
> The error given is:
> dcdplugin) Could not access file 'E:/temp/6yb7_NPT_Production-2.dcd'.
> ERROR) Could not read file E:/temp/6yb7_NPT_Production-2.dcd
> Cheers,
> -
> Jason Smith
> Post-Doctoral Fellow
> Robert N. Young Lab, Simon Fraser University
> 8888 University Drive, Burnaby, BC, V5A-1S6
> Canada

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