Hi Philippe,
The executable not recognised thing is a red-herring I'm sure.
The problem seems to be some kind of process-level lock on locale
resources.
A single instance of valgrind over all our processes runs fine. The issue
is not the application, it is the parallelisation that I have introduced by
using Python's multiprocess module in order to run batches of valgrind
together. One valgrind instance takes about a week to run over all our
processes which is why I started to explore the multiprocess route. For
the moment, I'll scale back and be patient until I understand the locale
issue.
Thank for your help.
Regards,
David.
On Tue, Feb 11, 2014 at 8:32 PM, Philippe Waroquiers <
philippe.waroqui...@skynet.be> wrote:
> On Tue, 2014-02-11 at 07:22 +0000, David Carter wrote:
> > Hi Philippe,
> >
> > Thanks for your suggestions, I have got the first part of the
> > information. It seems there is some contention over locale
> > resources. Do you agree?
> Well, difficult to say without looking more in depth at the code.
> Taking into account that there are threads still running,
> that the valgrind trace shows that threads are being scheduled,
> I guess the problem is linked to the application, not to valgrind.
>
> It looks to me that the easiest would be to have a way to
> debug the application, trying e.g. a newer gdb and vgdb
> (if the newer gdb supports the strange executable format).
>
> Alternatively, just make a normal executable :).
>
> At this stage, not much can be done from Valgrind side I am afraid.
>
>
> Philippe
>
>
>
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