On 10/14/2011 06:31 PM, Ian Tickle wrote:
Hello all, some Fortran developer out there must know the answer to
this one. I'm getting a "forrtl: severe (41): insufficient virtual
memory" error when allocating dynamic memory from a F95 program
compiled with Intel Fortran v11.1.059. The program was compiled on an
old ia-32 Linux box with 1Gb RAM + 2Gb swap (I only have one Intel
license to compile on this machine), but I'm running it on a brand new
x86-64 box with 12Gb RAM + 8Gb swap. This should be ample: the
program's maximum total memory requirement (code + static data +
dynamic data) should be no more than 3Gb.
My question is: what do I have to do to make it work? According to
the ifort man page I need to specify "-mcmodel=medium -shared-intel".
It says: "If your program has COMMON blocks and local data with a
total size smaller than 2GB -mcmodel=small is sufficient. COMMONs
larger than 2GB require mcmodel=medium or -mcmodel=large. Allocation
of memory larger than 2GB can be done with any setting of -mcmodel."
I'm a bit confused about the difference here between COMMONS> 2Gb
(which I don't have) and "allocation of memory"> 2Gb (which I assume
I do).
When I try setting -mcmodel=medium (and -shared-intel) I get "ifort:
command line warning #10148: option '-mcmodel' not supported". Is
this telling me that I have to compile on the 64-bit machine?
Whatever happened to cross-compilation?
All suggestions greatly appreciated!
Try the GNU (compiler) and see what it says. ;)
