VMD-L Mailing List

From: McGuire, Kelly (mcg05004_at_byui.edu)
Date: Sun Apr 29 2018 - 20:31:18 CDT

That's what I thought. Out of curiosity, is there a Windows 64-bit version of VMD in the works? I can use the Linux 64-bit version since it is installed on our supercomputer, but just wondering.

Kelly L. McGuire

PhD Scholar

Department of Physiology and Developmental Biology

Brigham Young University

LSB 3050

Provo, UT 84602

________________________________
From: Fernando Vallejos-Burgos <nandobike_at_gmail.com>
Sent: Sunday, April 29, 2018 5:37:16 PM
To: McGuire, Kelly
Cc: VMD Mailing LIst
Subject: Re: vmd-l: DCD Question

It is not a problem, it is a limitation of the 32-bit application you are running:
https://blogs.msdn.microsoft.com/tom/2008/04/10/chat-question-memory-limits-for-32-bit-and-64-bit-processes/

Even if your system is running 64-bit windows, a 32-bit application can just use up to 4 GB of *system* RAM.

On Apr 30, 2018, at 6:45 AM, McGuire, Kelly <mcg05004_at_byui.edu<mailto:mcg05004_at_byui.edu>> wrote:

I ran a 20 ns simulation, saving every 2000 frames, so I have 10,000 frames. When I try to load the dcd, it crashes. I've some of the other responses to this problem. I am using using the VMD 1.9.3 Windows 32-bit, so I know there is a limit on memory for this version of VMD. What's interesting though is the winvmd console says I have 4095MB (100%) of free system memory and my GPU has 4.0GB. Neither one of those is true. My desktop has 32 GB of memory and my

GTX 1080 Ti has 11 GB of memory. Is there a way to force this version of VMD to recognize all of my memory? Is this just a problem with VMD being the 32-bit version? Thanks!

Kelly L. McGuire

PhD Scholar

Department of Physiology and Developmental Biology

Brigham Young University

LSB 3050

Provo, UT 84602