Intel® Fortran Compiler
Build applications that can scale for the future with optimized code designed for Intel® Xeon® and compatible processors.
Announcements
FPGA community forums and blogs on community.intel.com are migrating to the new Altera Community and are read-only. For urgent support needs during this transition, please visit the FPGA Design Resources page or contact an Altera Authorized Distributor.
29285 Discussions

Maximum variable size

inkant
Novice
‎07-08-2009 01:33 PM
513 Views
Hello everyone,

I have a small question. Is there an upper cap variable size in fortran.

I have a variable which is approximately 2Mb (DOUBLE PRECISION rxnrate(16, 252, 62)) and is paased between the subroutines. Is it possible that this variable gets truncated while passing.

Best Regards,
Inkant
0 Kudos

Link Copied

1 Reply
Steven_L_Intel1
Employee
‎07-08-2009 02:17 PM
513 Views
There's no Fortran upper limit - any limit is imposed by the operating system. Such limits are based on the address space size and are generally 2GB (not MB!) unless you are on an x64 platform and use -mcmodel medium.

When you pass an array, assuming you just give the array name, it passes the address. I would suggest that you look for coding errors such as mismatched bounds declarations.
0 Kudos
Copy link
Reply

Community support is provided Monday to Friday. Other contact methods are available here.

Intel does not verify all solutions, including but not limited to any file transfers that may appear in this community. Accordingly, Intel disclaims all express and implied warranties, including without limitation, the implied warranties of merchantability, fitness for a particular purpose, and non-infringement, as well as any warranty arising from course of performance, course of dealing, or usage in trade.

For more complete information about compiler optimizations, see our Optimization Notice.