Error running FORTRAN code Post: 302534201

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Top Forums Programming Error running FORTRAN code Post 302534201 by sandhyakg on Monday 27th of June 2011 07:00:45 AM

06-27-2011

Registered User

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.

sandhyakg

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mlib_signalsinewave_f32

mlib_SignalSineWave_F32(3MLIB)				    mediaLib Library Functions				    mlib_SignalSineWave_F32(3MLIB)

NAME

       mlib_SignalSineWave_F32 - sine wave generation

SYNOPSIS

       cc [ flag... ] file... -lmlib [ library... ]
       #include <mlib.h>

       mlib_status mlib_SignalSineWave_F32(mlib_f32 *sine, void *state,
	    mlib_s32 n);

DESCRIPTION

       The mlib_SignalSineWave_F32() function generates one packet of sine wave and updates the internal state.

PARAMETERS

       The function takes the following arguments:

       sine	Generated sine wave array.

       state	Internal state structure.

       n	Length of the generated sine wave array in number of samples.

RETURN VALUES

       The function returns MLIB_SUCCESS if successful. Otherwise it returns MLIB_FAILURE.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Committed 		   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |MT-Safe			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       attributes(5)

SunOS 5.11							    2 Mar 2007					    mlib_SignalSineWave_F32(3MLIB)