Re: How to fix mutex error

From: Victor Kwan (vkwan8_at_uwo.ca)
Date: Fri Mar 27 2020 - 17:28:56 CDT

Dear Matthew,

I happen to run openSUSE Tumbleweed on my workstation.

Please provide the CPU model, which build are you using and whether or not
you compiled from source (multicore/CUDA/smp) and the option you used to
launch namd.

Victor

On Fri, Mar 27, 2020 at 5:37 PM Matthew Guberman-Pfeffer <
matthew.guberman-pfeffer_at_yale.edu> wrote:

> Dear Victor,
>
> The issue occurs every time I run a simulation on a fairly new linux
> computer running OpenSuse. If the simulation is the only calculation I run,
> after 108-114 min, the calculation stops with the
> ./nptl/pthread_mutex_lock.c:81 ... error.
>
> I should also note that I got this message one time when viewing a large
> trajectory with VMD.
>
> What details should I provide to help with replicating this issue?
>
> Best,
> Matthew
>
> On Sun, Mar 22, 2020 at 9:01 PM Victor Kwan <vkwan8_at_uwo.ca> wrote:
>
>> Dear Matthew,
>>
>> pthread_mutex_lock has to do with thread synchronization.
>>
>> Please provide detailed steps to replicate the error.
>>
>> VK
>>
>> On Sat, Mar 21, 2020 at 11:52 PM Matthew Guberman-Pfeffer <
>> matthew.guberman-pfeffer_at_yale.edu> wrote:
>>
>>> Dear NAMD community,
>>>
>>> I encountered the below error when trying to run multiple simulations,
>>> each using 12 processors. Can you please help me understand what the error
>>> means, and how to avoid it?
>>>
>>> ../nptl/pthread_mutex_lock.c:81: __pthread_mutex_lock: Assertion
>>> 'mutex->__data.__owner ==0' failed
>>>
>>> Thanks,
>>> Matthew
>>>
>>

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