[gmx-users] memory problem (normal mode analysis)

[Sridhar Acharya]

Hello,
I tried to run normal mode analysis using nm integrator, for a protein 
of 478 aminoacids.
The program halted with the following warning. The computer has 2GB of 
memory.
How to calculate the memory required while performing such normal mode 
calculations.
What can I do to get over this problem.
thanks in advance.
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Back Off! I just backed up 1cyp_WT_md.log to ./#1cyp_WT_md.log.2#
Reading file 1cyp_WT_b4md.tpr, VERSION 3.2.1 (double precision)
Note: tpx file_version 31, software version 40
Non-cutoff electrostatics used, forcing full Hessian format.
Allocating Hessian memory...

-------------------------------------------------------
Program mdrun_d, VERSION 3.3
Source code file: smalloc.c, line: 113

Fatal error:
calloc for full_matrix (nelem=-1439657584, elsize=8, file minimize.c, 
line 1866)
-------------------------------------------------------

"Way to Go Dude" (Beavis and Butthead)
: Cannot allocate memory
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