| John,
Sorry for the delay. I'll take a look at this today.
Regards Greg
Ok, I upgraded to openmpi 3.1.3 and am now getting the same behavior as before. Eclipse is stuck at "Operation in progress" when I launch a debug job, says "Cannot connect to debugger" when I click Cancel, and the UI is unresponsive until I manually kill sdm.
Eclipse prints the following to the console:
mpirun -np 7 --use-hwthread-cpus
#PTP job_id=12156
mpirun -np 7 --use-hwthread-cpus /home/jhaiducek/.eclipsesettings/sdm --port=43775 --host=localhost --debugger=gdb-mi --debug=127 --routing_file=/home/jhaiducek/eclipse-workspace/mpi_hello_world/Debug/routes_c2f475e7-63c1-4a8a-ac8b-40171c9f2ec2
And in the shell I opened eclipse from I get the following:
submit-interactive-debug: c2f475e7-63c1-4a8a-ac8b-40171c9f2ec2: perl /home/jhaiducek/.eclipsesettings/rms/OPENMPI/ start_job.pl mpirun -np 7 --use-hwthread-cpus
Thanks! I vaguely recall seeing some messages indicating a segfault but I couldn't tell where they were coming from (eclipse, mpirun, sdm, gdb, or my application). Looks like openmpi 3.1.3 hasn't been packaged for Ubuntu 18.04, so I'll have to build from source. Will message back once I have that.
John,
There's a bug in OpenMPI 2.x and 3.1.0 that causes mpirun to segfault. You'll need to update to 3.1.3 or later for it to work.
Regards, Greg
I'm on just a single machine.
Hi John,
This can be tricky to diagnose. Are you running on a cluster or just on a single machine?
Regards,
Greg
> On Mar 12, 2019, at 11:56 AM, John Haiducek <jhaiduce@xxxxxxxxx> wrote:
>
> Hi,
>
> I'm trying to run the PTP parallel debugger on the MPI Hello World example provided with PTP. I can run the code in parallel just fine, and I can debug the same code with eclipse in serial. But when I run the parallel debugger it gets stuck at "Operation in progress..." and the code never starts. If I press Cancel I get "Launch Error: Error completing debug job launch Reason: Cannot connect to debugger." At that point the Eclipse GUI becomes unresponsive until I kill all the sdm processes that were created.
>
> I tried turning on "Enable SDM tracing" (and all the options listed under it), but that seems to do nothing.
>
> I'm running Eclipse Photon (4.8.0) with PTP 9.2.0.201805221500 on Ubuntu Linux 18.04.2 LTS with openmpi 2.1.1 and gdb 8.1.0.20180409-git.
>
> John
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