[mpich-discuss] File I/O causing collective abort of all ranks

[Brian Harker]

yeah, just a typo, sorry.

On Wed, Sep 24, 2008 at 1:53 AM, William Gropp <wgropp at illinois.edu> wrote:
> Is this the *exact* code?  If so, the problem is that both the do loop and
> the implied loop in the write statement refer to the same variable - i (as
> in EYE), instead of one being a loop over j (JAY) and one over i (EYE).  j
> (JAY) may not be set, or set out-of-range.
>
> If this is just a typo in the example, then ignore this note :) .  But in
> that case, it would help to see the exact code.
>
> Bill
>
> On Sep 23, 2008, at 12:13 PM, Brian Harker wrote:
>
>> Hello list-
>>
>> I have a problem with process 0 being able to open a file for writing
>> and subsequently write to it.  The pertinent section of code looks as
>> follows:
>>
>> ========================================
>> if ( proc_id == 0 ) then
>>
>>  open( unit = 1, file = "fubar.dat", status="new" )
>>  do i = 1, ny
>>   write(1,*) ( array(i,j), i = 1, nx )
>>  end do
>>  close(1)
>>
>> end if
>> ========================================
>>
>> When this part of the code is reached, the program seems to hang for a
>> long time while trying to open the file, then spits out the following
>> error message:
>>
>> rank 0 in job 11  $HOSTNAME_#####  caused collective abort of all ranks
>>  exit status of rank 0: killed by signal 9
>>
>> I am confused about this error, because it is seemingly isolated to
>> this particular write-to-file by process 0.  During execution, my
>> slave processes write out other files using this exact same syntax.
>> Has anyone run across this?  I can't seem to find any useful
>> information on the interweb.  I have run into this problem with both
>> MPICH2-1.0.6p1 and MPICH2-1.0.7.  I am using the Intel fortran
>> compiler, ifort 10.1.012.
>>
>> Thanks in advance for any input!
>>
>>
>>
>> --
>> Cheers,
>> Brian
>> brian.harker at gmail.com
>>
>>
>> "In science, there is only physics; all the rest is stamp-collecting."
>> -Ernest Rutherford
>>
>
> William Gropp
> Paul and Cynthia Saylor Professor of Computer Science
> University of Illinois Urbana-Champaign
>
>
>
>



-- 
Cheers,
Brian
brian.harker at gmail.com


"In science, there is only physics; all the rest is stamp-collecting."
 -Ernest Rutherford