Ifort -parallel option on Mac Pro 12-core ?

hghu · ‎07-12-2011

Problem:

Code runs very well on a Mac Pro with 8-core, include ifort -parallel option.

We got a new Mac Pro with 12-core recently, ifort -parallel option doesn't work. Code tested runs goodon one core.

Error:forrtl: severe (174): SIGSEGV, segmentation fault occurred

% ifort -V

Intel Fortran Intel 64 Compiler Professional for applications running on Intel 64, Version 11.1 Build 20090827 Package ID: m_cprof_p_11.1.067

% ifort -VIntel Fortran Intel 64 Compiler Professional for applications running on Intel 64,Version 11.1 Build 20090827 Package ID:

Machine:

Mac Pro 2 x 6-core intel xeon 2.66 Ghz, 24 GB memory.

ulimit : unlimited

Any idea? Thanks

TimP · ‎07-13-2011

If you don't have the patience to go through all the steps in the advice posted above the forum, at least check your stack limit settings.

Ron_Green · ‎07-13-2011

There a few common topics that we hotlist at the top of the forum. This is one:

http://software.intel.com/en-us/articles/determining-root-cause-of-sigsegv-or-sigbus-errors/

hghu · ‎07-27-2011

I increased the stack size but -parallel still doesn't work.

The code was checked-g -traceback-check bounds -check alland it runs well on a 8-core Mac with -parallel option.

Also tried-Wl,-stack_size,0x1000000000, not working.

hu% limit

cputime unlimited

filesize unlimited

datasize unlimited

stacksize 65532 kbytes

coredumpsize 0 kbytes

memoryuse unlimited

descriptors 256

memorylocked unlimited

maxproc 266

forrtl: severe (174): SIGSEGV, segmentation fault occurred

Please help me out!