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Subject: Re: [OMPI users] OpenMPI Segmentation fault (11)
From: David Zhang (solarbikedz_at_[hidden])
Date: 2010-07-26 12:09:41


What do you mean short and long? Do you have the ability to control
the execution time of your program without changing a single line of
your code?

On 7/25/10, Jack Bryan <dtustudy68_at_[hidden]> wrote:
>
> Dear All,
> I run a 6 parallel processes on OpenMPI.
> When the run-time of the program is short, it works well.
> But, if the run-time is long, I got errors:
> [n124:45521] *** Process received signal ***[n124:45521] Signal:
> Segmentation fault (11)[n124:45521] Signal code: Address not mapped
> (1)[n124:45521] Failing at address: 0x44[n124:45521] [ 0]
> /lib64/libpthread.so.0 [0x3c50e0e4c0][n124:45521] [ 1]
> /lib64/libc.so.6(strlen+0x10) [0x3c50278d60][n124:45521] [ 2]
> /lib64/libc.so.6(_IO_vfprintf+0x4479) [0x3c50246b19][n124:45521] [ 3]
> /lib64/libc.so.6(_IO_printf+0x9a) [0x3c5024d3aa][n124:45521] [ 4]
> /home/path/exec [0x40ec9a][n124:45521] [ 5]
> /lib64/libc.so.6(__libc_start_main+0xf4) [0x3c5021d974][n124:45521] [ 6]
> /home/path/exec [0x401139][n124:45521] *** End of error message ***
> It seems that there may be some problems about memory management.
> But, I cannot find the reason.
> My program needs to write results to some files.
> If I open the files too many without closing them, I may get the above
> errors.
> But, I have removed the writing files from my program.
> The problem appears again when the program runs longer time.
> Any help is appreciated.
> Jack
> July 25 2010
>
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-- 
Sent from my mobile device
David Zhang
University of California, San Diego