Fortran Increase of array memory in gfortran compiler

AI Thread Summary
In Fortran, the maximum size of an array is limited by the CPU architecture, specifically whether it is 32-bit or 64-bit. To increase memory allocation for large arrays, the "kind" parameter can be utilized, allowing for the definition of arrays with different precision levels. For example, using "real(kind=4)" allocates a standard real number, while "kind=8" or "kind=16" can be used for larger allocations. It's important to note that the "kind" parameter is applicable in Fortran 90/95, but not in Fortran 77.
Cleiton
Messages
1
Reaction score
0
Dear colleagues

My code in Fortran passes all data in one large vector. I increased the size of this vector for the maximum that the compiler accepts but still need more positions allocable to it. Is there any way I can increase the memory allocation of the compiler?

Thank's
 
Technology news on Phys.org
Hi, do not forget that the maximum size for an array is determined by the CPU architecture, i.e. 32bit or 64bit. Anyhow, you can use the word "kind" to allocate very large arrays, e.g

real(kind=4) :: var
You can also use kind=8 or even kind=16. One last thing, the parameter kind is used in Fortran 90/95 not 77
 

Thread 'Learning Assembly and computer architecture for x86'

Dear Peeps I have posted a few questions about programing on this sectio of the PF forum. I want to ask you veterans how you folks learn program in assembly and about computer architecture for the x86 family. In addition to finish learning C, I am also reading the book From bits to Gates to C and Beyond. In the book, it uses the mini LC3 assembly language. I also have books on assembly programming and computer architecture. The few famous ones i have are Computer Organization and...
View full post »

Thread 'Touch-typing for programmers'

What percentage of programmers have learned to touch type? Have you? Do you think it's important, not just for programming, but for more-than-casual computer users generally? ChatGPT didn't have much on it ("Research indicates that less than 20% of people can touch type fluently, with many relying on the hunt-and-peck method for typing ."). 'Hunt-and-peck method' made me smile. It added, "For programmers, touch typing is a valuable skill that can enhance speed, accuracy, and focus. While...
View full post »

Thread 'Microsoft Technical Interview question'

I had a Microsoft Technical interview this past Friday, the question I was asked was this : How do you find the middle value for a dataset that is too big to fit in RAM? I was not able to figure this out during the interview, but I have been look in this all weekend and I read something online that said it can be done at O(N) using something called the counting sort histogram algorithm ( I did not learn that in my advanced data structures and algorithms class). I have watched some youtube...
View full post »

Similar threads

C/C++ Questions about C++, pointers, OS and compiler memory allocation
Replies
17
Views
3K
Fortran MinGW64 GFORTRAN Issues newer versions
Replies
5
Views
2K
Fortran Are these bugs for the GNU Fortran, g++, and clang compilers?
Replies
3
Views
1K
How did early compilers overcome the need for a compiler to compile itself?
Replies
6
Views
2K
Working on a compiler, need some opinions
Replies
20
Views
3K
Fortran Create a makefile with allocatable memory in fortran
Replies
9
Views
3K
Fortran What are common errors when compiling a simple Fortran code?
Replies
2
Views
3K
Difference between interpreted and compiled files....
Replies
29
Views
3K
Fortran Memory storage of multidimensional arrays in fortran 90
Replies
1
Views
4K
Fortran Fortran - compilator dependent, intrinsic array manipulation, memory problem
Replies
1
Views
3K

Hot Threads

Recent Insights

Back
Top