[mpich-discuss] SIGUSR1 used even with --disable-chekpointing

[Darius Buntinas]

Hi Eugene,

I've created a ticket for this.  You can add yourself to the cc list if you're interested in tracking it.
    https://trac.mcs.anl.gov/projects/mpich2/ticket/1449

The sigusr1 handler is sent by the hydra process manager to the MPICH library to notify it that a process has failed.  We'll make the installation of the signal handler conditional on whether fault-tolerance features are enabled.  In the mean time, if you're not using the fault-tolerence features, you can remove the line installing the signal handler in src/mpid/ch3/channels/nemesis/src/ch3_progress.c around line 809, then rebuild and reinstall (you might have to do a make clean first to make sure the file gets rebuilt properly).

-d

On Mar 1, 2011, at 1:16 PM, Yauheni Zelenko wrote:

> Hi!
> 
> We use part of our code as dinamic library for other application. In this situation we can't guarantee that MPI_Init executed before installing custom signal handler on SIGUSR1.
> 
> I compiled MPICH2 with --disable-chekpointing (we don't use it anyway), but MPICH2 still tries to install handler for SIGUSR1.
> 
> I tried 1.3.2 and r8077.
> 
> Eugene.
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