[MITgcm-support] convincing compiler of node memory size

[Martin Losch]

Hi Holly,

usually the default "memory model" only allows access to 2GB of RAM. Look for a flag that lets you change the memory model to something like "medium" (for pgf compilers I once used -mc_mode=medium, if I remember correctly).

Martin

On Apr 15, 2010, at 5:00 PM, Holly Dail wrote:

> Hello all -
> 
> I'm trying to build an adjoint code for the Nehalem nodes on Pleiades, and am getting the same error reported in January by Santha here:
> http://mitgcm.org/pipermail/mitgcm-support/2010-January/006434.html
> 
> Reducing my nchklev_1 does allow a successful compile, but I don't seem to be able to generate a binary that uses anywhere close to the 3 GB available on the Nehalem nodes.  In my config, if I use nchklev_1 = 30 I get a binary that uses nearly 1 GB, but if I set nchklev_1 = 80 the link fails.
> 
> The head nodes have 4 GB of memory, but perhaps there is a setting somewhere telling the compiler 1 GB is the maximum?  I imagine I could submit the compile to the queue, but is there another solution?
> 
> I'm using linux_ia64_ifort+mpi_ice_nas with -xSSE4.2.
> 
> Thanks -
> Holly
> 
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