06-27-2011
Error running FORTRAN code
Hi,
I am new to this forum and do not know whether this is the appropriate place to post this question. Anyway am trying my luck.
I have a fortran program swanhcat.ftn, which is part of a wave modelling system. There is also a file hcat.nml which is required to run this program. The program's job is to combine many files (say 250) into a single file. It is of course not concatenation. The program was compiled and run. It worked fine when the number of input files to the program was a certain number (say 180) and failed when there were more number of input files. I should say that the input files are big. I give below details of one such file.
-rw-r--r-- 1 osf staff 15208731 Jun 27 12:40 restart_20090101.00-132
Actually the files are like restart_20090101.00-001, restart_20090101.00-002..... restart_20090101.00-180 and are the outputs of a numerical model run using 180 processors. Each processor does some part of the model run and thus the final information is contained in the 180 files together. I am trying to combine the information into a single file using the swanhcat.ftn program. It was a success when I tried with 180 processors (there were 180 input files).
When I tried with 181 input files(or higher), the program failed saying
'segmentation fault(core dumped)'. Does it have to do something with the memory used by the program?
How do I find out what is wrong?
Best regards,
s.
9 More Discussions You Might Find Interesting
1. Programming
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)
Discussion started by: Ravikishore
2 Replies
2. Programming
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)
Discussion started by: rks171
1 Replies
3. UNIX and Linux Applications
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)
Discussion started by: nagavenkatesh
2 Replies
4. Programming
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)
Discussion started by: P_E_M_Lee
3 Replies
5. Programming
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)
Discussion started by: kristinu
0 Replies
6. Programming
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)
Discussion started by: kristinu
1 Replies
7. Programming
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)
Discussion started by: Paul Moghadam
1 Replies
8. Homework & Coursework Questions
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)
Discussion started by: antonija
0 Replies
9. Programming
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)
Discussion started by: KathyB148
5 Replies
LEARN ABOUT REDHAT
mpi_error_class
MPI_Error_class(3) LAM/MPI MPI_Error_class(3)
NAME
MPI_Error_class - Converts an error code into an error class
SYNOPSIS
#include <mpi.h>
int MPI_Error_class(int errcode, int *class)
INPUT PARAMETER
errcode
- Error code returned by an MPI routine
OUTPUT PARAMETER
class - Error class associated with errcode
NOTES FOR FORTRAN
All MPI routines in Fortran (except for MPI_WTIME and MPI_WTICK ) have an additional argument ierr at the end of the argument list. ierr
is an integer and has the same meaning as the return value of the routine in C. In Fortran, MPI routines are subroutines, and are invoked
with the call statement.
All MPI objects (e.g., MPI_Datatype , MPI_Comm ) are of type INTEGER in Fortran.
ERRORS
If an error occurs in an MPI function, the current MPI error handler is called to handle it. By default, this error handler aborts the MPI
job. The error handler may be changed with MPI_Errhandler_set ; the predefined error handler MPI_ERRORS_RETURN may be used to cause error
values to be returned (in C and Fortran; this error handler is less useful in with the C++ MPI bindings. The predefined error handler
MPI::ERRORS_THROW_EXCEPTIONS should be used in C++ if the error value needs to be recovered). Note that MPI does not guarantee that an MPI
program can continue past an error.
All MPI routines (except MPI_Wtime and MPI_Wtick ) return an error value; C routines as the value of the function and Fortran routines in
the last argument. The C++ bindings for MPI do not return error values; instead, error values are communicated by throwing exceptions of
type MPI::Exception (but not by default). Exceptions are only thrown if the error value is not MPI::SUCCESS
.
Note that if the MPI::ERRORS_RETURN handler is set in C++, while MPI functions will return upon an error, there will be no way to recover
what the actual error value was.
MPI_ERR_ARG
- Invalid argument. Some argument is invalid and is not identified by a specific error class. This is typically a NULL pointer or
other such error.
MORE INFORMATION
For more information, please see the official MPI Forum web site, which contains the text of both the MPI-1 and MPI-2 standards. These
documents contain detailed information about each MPI function (most of which is not duplicated in these man pages).
http://www.mpi-forum.org/
ACKNOWLEDGEMENTS
The LAM Team would like the thank the MPICH Team for the handy program to generate man pages ("doctext" from ftp://ftp.mcs.anl.gov/pub/sow-
ing/sowing.tar.gz ), the initial formatting, and some initial text for most of the MPI-1 man pages.
LOCATION
errclass.c
LAM
/MPI 6.5.8 11/10/2002 MPI_Error_class(3)