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Error with 12.3, not with 12.2. Bug?
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fspiga



Joined: 21 Feb 2012
Posts: 16

PostPosted: Tue May 22, 2012 4:07 am    Post subject: Reply with quote

I have a short follow-up. I tried with PGI 12.4 and the error still persists.

I can write to the User Support providing a link to the code, instructions to compile and an example. It is not necessary to have MPI, the serial code shows the same behavior (and crash).

F.
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mkcolg



Joined: 30 Jun 2004
Posts: 6218
Location: The Portland Group Inc.

PostPosted: Tue May 22, 2012 10:35 am    Post subject: Reply with quote

Hi fspiga,

My fault, I meant to get back to you on this but didn't. When I tried to do an svn checkout, the server refuses my connection.

Quote:
$ svn checkout svn://scm.qe-forge.org/scmrepos/svn/q-e/trunk
svn: Can't connect to host 'scm.qe-forge.org': Connection refuse


I noticed that espresso 5.0 is available. Does the error occur there?

- Mat
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fspiga



Joined: 21 Feb 2012
Posts: 16

PostPosted: Tue May 22, 2012 2:16 pm    Post subject: Reply with quote

The anonymous access should work, this sounds weird. I am going to check tomorrow.

Anyhow yes, the problem happens also with the 5.0. I did a test this morning. You can download the file "expresso-5.0.tar.gz" here: http://qe-forge.org/frs/?group_id=10&release_id=116

About the test case, this:
http://www.fislab.disco.unimib.it/~filippo/PW-AUSURF54.tar.gz
is enough to reproduce the problem.

Many thanks in advance!
F.
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mkcolg



Joined: 30 Jun 2004
Posts: 6218
Location: The Portland Group Inc.

PostPosted: Tue May 22, 2012 2:39 pm    Post subject: Reply with quote

Hi fspiga,

I downloaded espresso-5.0 and was able to recreate the segv in iotk_scan.f90. The error occurs with or without optimization in a call to a non-advancing read. I did notice that if I add "-D__IOTK_WORKAROUND1" and use the alternate advancing read, then the program runs correctly.

I'm still not sure if it's a problem with our I/O run time library or a program error. I did note that the size returned from the read was 2046 while the buffer size is only 1024. Though, increasing the buffer size did not help. I'll continue looking.

- Mat
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fspiga



Joined: 21 Feb 2012
Posts: 16

PostPosted: Wed May 23, 2012 2:42 am    Post subject: Reply with quote

mkcolg wrote:

I downloaded espresso-5.0 and was able to recreate the segv in iotk_scan.f90. The error occurs with or without optimization in a call to a non-advancing read. I did notice that if I add "-D__IOTK_WORKAROUND1" and use the alternate advancing read, then the program runs correctly.


I am not aware about this flag (-D__IOTK_WORKAROUND1) but I am going to investigate too.

Many thanks in advance for your help!
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