From: Julio Cantu (
Date: Thu Dec 10 2015 - 17:36:05 CST

Hello all,

I am attempting to follow the nanotubes tutorial, but have trouble when submitting my own namd job. I receive the following error once I initiate the simulation:

C:\Users\Julio>cd E:/VMD/nanotubes-files

C:\Users\Julio>E:/VMD/NAMD/namd2 sim_short.conf
Charm++: standalone mode (not using charmrun)
Charm++ warning> fences and atomic operations not available in native assembly
Converse/Charm++ Commit ID: v6.6.1-rc1-1-gba7c3c3-namd-charm-6.6.1-build-2014-De
[0] isomalloc.c> Disabling isomalloc because mmap() does not work
CharmLB> Load balancer assumes all CPUs are same.
Charm++> Running on 1 unique compute nodes (4-way SMP).
Charm++> cpu topology info is gathered in 0.000 seconds.
Info: NAMD 2.10 for Win64-multicore
Info: Please visit
Info: for updates, documentation, and support information.
Info: Please cite Phillips et al., J. Comp. Chem. 26:1781-1802 (2005)
Info: in all publications reporting results obtained with NAMD.
Info: Based on Charm++/Converse 60601 for multicore-win64
Info: Built Tue, Dec 09, 2014 3:31:31 PM by jim on europa
Info: Running on 1 processors, 1 nodes, 1 physical nodes.
Info: CPU topology information available.
Info: Charm++/Converse parallel runtime startup completed at 0 s
Info: 4.49219 MB of memory in use based on GetProcessMemoryInfo
Info: Configuration file is sim_short.conf
FATAL ERROR: Unable to access config file sim_short.conf
------------- Processor 0 Exiting: Called CmiAbort ------------
Reason: FATAL ERROR: Unable to access config file sim_short.conf

Charm++ fatal error:
FATAL ERROR: Unable to access config file sim_short.conf

I apologize if the solution if trivial, but if anyone may have some insight as to what I am doing wrong, I would greatly appreciate it.

Thank you for your time and consideration.