[Darshan-users] Darshan 3.3.1 on XC40 CLE7.0 UP03 warning about memory

[Phil Carns]

Hi Bilel,

That's surprising for sure.  We hit that condition once before (see 
https://github.com/darshan-hpc/darshan/issues/243) locally and added 
that message as a replacement for an assertion in case we encountered it 
again, but we never figured out how to reproduce it.

Has Darshan itself been recompiled since the upgrade?  This warning is 
emitted by the Lustre instrumentation module.  It's plausible that 
something changed in the Lustre library API that's causing some runtime 
incompatibility.

thanks,

-Phil

On 1/25/22 12:22 PM, Bilel Hadri wrote:
>
> Hi Darshan colleagues,
>
> On Shaheen, Cray XC40, we just upgraded to CLE7 UP03 and using Darshan 
> 3.3.1 and we are facing some warning with some packages like VASP, 
> Quantum Espresso and in house seismic code :
>
> WARNING: unexpected condition in Darshan, possibly triggered by memory 
> corruption.Darshan log may be incorrect.
>
> What would be the reason for such warning? On the TDS, with the same 
> OS and same Darshan version and same applications, we didn’t get such 
> warning…
>
> Is it related to Darshan, or to a system memory issue?
>
> Beside unloading darshan module, is there a way to remove the warning?
>
> Regards,
>
> Bilel
>
> -------
>
> Bilel Hadri, PhD
>
> Computational Scientist
>
> KAUST Supercomputing Lab
>
> Al Khawarizmi Bldg. (1)  Office 126
>
> 4700 King Abdullah University of Science and Technology
>
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>
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>
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>
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