Hi Ian,compiling on your 32bit machine gave you a 32bit binary, so your 12GB RAM cannot be used!
HTH, Kay Am 20:59, schrieb Ian Tickle:
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! -- Ian
-- Kay Diederichs http://strucbio.biologie.uni-konstanz.de email: kay.diederi...@uni-konstanz.de Tel +49 7531 88 4049 Fax 3183 Fachbereich Biologie, Universität Konstanz, Box 647, D-78457 Konstanz This e-mail is digitally signed. If your e-mail client does not have the necessary capabilities, just ignore the attached signature "smime.p7s".
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