It would be very helpful if you could post your code examples using code tags, [code ][/code ], there is a space before the ] that you don't actually put in, but I have added it so you could read the tag text.
Here is an example,
I still program in fortran 77, so this syntax is not clear to me. I would set up a do loop with a control line number and not an ENDDO. I would also evaluate with .NE. instead of /=. etc.
The thing to do is to create a small program that just opens your files, closes your files, and prints something to confirm success. Get that to work. You can post that here with a sample input file so others can test it.
Most likely, you are exceeding the capacity of some data structure that stores the contents of the files, but that is hard to know without seeing the declarations. After you get the files opening and closing, you can look at the data structures in the program and add what is necessary to store the data. It can be helpful to have apps like this process one input file at a time if that is possible. Then it shouldn't matter how many input files you process, only how large the largest file is.
Fortran doesn't have dynamic memory allocation, so you have to pre-size your data structures to be larger than needed and also trap out the data loading process so you can quit with a handled exception if your data is larger than the available space. If that is a huge issue, you may consider re-writing some of the subroutines in c++, which has containers like vectors and maps that can re-size on the fly. It is generally not a problem to have mixed language code and calling a c++ function from Fortran code is not that difficult as long as you can compile both languages.
Fortran is a beastly language for file I/O and I'm sure it wold be very much easier to write this program in c++, or better yet, and interpreter like perl, python, or ruby. If the app is 500 lines of f95, it is probably 200 lines of c++, or 15 lines of python.
Hi Sir,
I am running C program which include directfb.h header files.
root@lxdevenv:~/Desktop# vi n.c
root@lxdevenv:~/Desktop# gcc n.c -o n -I/usr/local/include/directfb -L/usr/local/lib -ldirectfb -lfusion -ldirect -lpthread -lm
n.c: In function ‘main':... (2 Replies)
Hi, I have a very large, very old FORTRAN code that I work with. The code is quite messy and I was wondering if I can speed up execution time by finding subroutines that code execution spends the most time in. Is there any kind of software I can use to see where the code spends most of the... (1 Reply)
hi All,
we have a script to remove the files from particular path,when we tryingto run manually the script went to success and removed the files but the same script which is running by other team it got failed and giving the error "2 (RC)2 "..what is the cause of the failure..and we passing the... (2 Replies)
Hi there,
I had run into some fortran code to modify. Obviously, it was written without thinking of high performance computing and not parallelized... Now I would like to make the code "on track" and parallel. After a whole afternoon thinking, I still cannot find where to start. Can any one... (3 Replies)
I am using doxygen for documenting my fortran code.
I want to write some notes after the header in different parts of the subroutine. Any idea what the tags should be as anything I write after the header is not displayed
... (0 Replies)
I have the code below and I want to remove the "go to" statements. Any idea how I can do it?
if (iorder == 0) then
tmincurrent = 1.0e11
if(ireverse == 0 .or. istop /= 1) then
do i = 1, 6
if ((side(i) /= sidelimit(i)) .and. (tminside(i) < tmincurrent)) then
... (1 Reply)
Hi guys,
After compiling a .f90 code and executing it, i get strange characters in the output file like :
^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@
Are these windows characters? how can i get rid of this?
Much appreciated.
Paul (1 Reply)
Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted!
1. The problem statement, all variables and given/known data:
I'm doing aproximation of derivative called five-point stencil. For every value of x, in interval , in step... (0 Replies)
I have a Fortran program and I am writing out to logical unit 7. The program is reading from a text file and writing to the new file formatted. It gets through the read and writes some to the file but then stops with the following error:
1525-013 The sequential WRITE statement cannot be... (5 Replies)