[mpich-discuss] Core dump in parse_args

[kumar.tarun at siemens.com]

Thanks. Good to know. I will explore further.

Regards
Tarun

From: Zhou, Hui <zhouh at anl.gov>
Sent: Monday, September 18, 2023 2:34 PM
To: discuss at mpich.org; Thakur, Rajeev <thakur at anl.gov>
Cc: Raffenetti, Ken <raffenet at anl.gov>; Kumar, Tarun (DI SW ICS DVT RD QSCE) <kumar.tarun at siemens.com>
Subject: Re: [mpich-discuss] Core dump in parse_args

Hydra supports -configfile {name}​ option, so one could try putting all his commandline arguments in a file and pass that to hydra.

Hui

________________________________
From: Raffenetti, Ken via discuss <discuss at mpich.org<mailto:discuss at mpich.org>>
Sent: Monday, September 18, 2023 4:22 PM
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Cc: Raffenetti, Ken <raffenet at anl.gov<mailto:raffenet at anl.gov>>; kumar.tarun at siemens.com<mailto:kumar.tarun at siemens.com> <kumar.tarun at siemens.com<mailto:kumar.tarun at siemens.com>>
Subject: Re: [mpich-discuss] Core dump in parse_args


I’m not aware of a hard-coded limit, but I am able to reproduce a segfault reliably by passing 1000 arguments a toy executable. Will update with more info when we have it.



Ken



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Date: Friday, September 15, 2023 at 4:57 PM
To: "Thakur, Rajeev" <thakur at anl.gov<mailto:thakur at anl.gov>>, "discuss at mpich.org<mailto:discuss at mpich.org>" <discuss at mpich.org<mailto:discuss at mpich.org>>
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Subject: Re: [mpich-discuss] Core dump in parse_args



Thanks Rajeev for your reply.

I don’t have the exact number as of now. It’s definitely more than 1000. Is there a hard coded limit?



Regards
Tarun



From: Thakur, Rajeev <thakur at anl.gov<mailto:thakur at anl.gov>>
Sent: Friday, September 15, 2023 2:40 PM
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Cc: Kumar, Tarun (DI SW ICS DVT RD QSCE) <kumar.tarun at siemens.com<mailto:kumar.tarun at siemens.com>>
Subject: Re: [mpich-discuss] Core dump in parse_args



How many arguments?



Rajeev



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Date: Friday, September 15, 2023 at 4:22 PM
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Subject: [mpich-discuss] Core dump in parse_args



Hi,

     I recently encountered this crash where mpiexec when executed from a bash script and with a large number of arguments crashes. The core dump is as follows:



#0  0x0000000000408ec3 in parse_args ()

#1  0x0000000000409f26 in HYD_uii_mpx_get_parameters ()

#2  0x000000000040397a in main ()



If I reduce the number of arguments then I don’t see the crash. Is it a known issue?



Regards

Tarun


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