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Is there a theoretical limit on loop iterations?
Is there a limit on the number of times a loops is allowed to execute? Theoretically speaking I mean, not one defined by the loops boundaries. I have a simple loop that sets each value in an array to 0. however, when the iterations get very large (2.5e+16 etc) strange things are happening. It... -
Fortran program calling C subroutine. How do I compile??
Hello all you wonderful programmers, you! I'm trying to recompile a piece of code that was not written by me. In it, there is a call to a subroutine "falloc." Now, as I understand, this is an intrinsic call in Compaq Digital Fortran 90 (helps setup memory allocation for arrays). However, I'm... -
Does optimizing code make the final product less or more accurate?
Hello again all! An interesting situation has arisen. I'm running some code to calculate the neutron transport fluxes in a reactor. Fun stuff. I've compiled two versions of the code using the same compiler (Intel Fortran V.8). One is not optimized and the other is optimized for use on an Intel... -
Can't get DO loop to iterate past 20018392. ???????
Hello all. Disclaimer: I'm not a professional Fortran programmer. So forgive me if I sound incompetent in some areas. With that said.... I'm running a code, specifically RSICC neutron transport code, and I'm running into a limitation that I can't seem to verify. I'm asked to allocate a certain...
