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ornladios / ADIOS

The old ADIOS 1.x code repository. Look for ADIOS2 for new repo
https://csmd.ornl.gov/adios
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adios_read_open_file seems to stall when not finding file #131

Closed fouriaux closed 7 years ago

fouriaux commented 7 years ago

adios_read_open_file seems to stall when not finding file

I try to do a restart feature in my program: I want to check if a file success to open for reading variables and continue if not. However my program seems to block completely after adios_read_open_file fail (which should return NULL and continue).

I run my execution via this command line:

srun -n4 frozen_read

If I run my program without srun, it is behaving properly: the adios_read_open_file call return NULL as expected. Please find below my code...

frozen_read.cc.txt config.xml.txt CMakeLists.txt

pnorbert commented 7 years ago

Uhh, I may have introduced a new bug. I will test this when I am back from the holiday weekend.

On Mon, May 29, 2017 at 11:39 AM Jeremy FOURIAUX notifications@github.com wrote:

adios_read_open_file seems to stall when not finding file

I try to do a restart feature in my program: I want to check if a file success to open for reading variables and continue if not. However my program seems to block completely after adios_read_open_file fail (which should return NULL and continue).

I run my execution via this command line:

srun -n4 frozen_read

If I run my program without srun, it is behaving properly: the adios_read_open_file call return NULL as expected.

CMakeLists.txt https://github.com/ornladios/ADIOS/files/1036179/CMakeLists.txt

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fouriaux commented 7 years ago

ok :-) I forgot to mention about the error message that is returned:

ERROR: MPI open failed for not_existing.bp: 'File does not exist, error stack:
ADIOI_UFS_OPEN(69): File not_existing.bp does not exist'
ERROR: File open failed: not_existing.bp
fouriaux commented 7 years ago

This proble does appears only with adios_read_open_file: adios_read_open function have correct behavior.

pnorbert commented 7 years ago

Fixed this bug. Can you give it a try? Thanks.

fouriaux commented 7 years ago

Thanks ! It is working :+1:
However I got some remaining error messages when I disable Verbosity of the method:

srun -n4 ./1_frozen_read Invalid error code (269009701) (error ring index 1 invalid) Invalid error code (269009701) (error ring index 1 invalid) Invalid error code (269009701) (error ring index 1 invalid) Invalid error code (269009701) (error ring index 1 invalid) Invalid error code (269009701) (error ring index 1 invalid) Invalid error code (269009701) (error ring index 1 invalid)

I am not sure if it is related..

pnorbert commented 7 years ago

I cannot reproduce this message. You meant setting "verbose=0" in adios_read_init_method(), right? My run is quiet in that case.

fouriaux commented 7 years ago

yes for setting verbose=0. Ok, so it is probably something with my configuration, I will create a new ticket if I don't find something on that. Thanks a lot.