Simply to keep track of what's going on:
I checked the build environment for openmpi and the system's setting,
they were built using gcc 3.4.4 with -Os, which was reputed unstable and
problematic with this compiler version. I've asked Prasanna to rebuild
using -O2 but this could be a bit lengthy since the entire system (or at
least all libs openmpi links to) needs to be rebuilt.
Eric
Eric Thibodeau wrote:
Prasanna,
Please send me your /etc/make.conf and the contents of
/var/db/pkg/sys-cluster/openmpi-1.2.7/
You can package this with the following command line:
tar -cjf data.tbz /etc/make.conf /var/db/pkg/sys-cluster/openmpi-1.2.7/
And simply send me the data.tbz file.
Thanks,
Eric
Prasanna Ranganathan wrote:
Hi,
I did make sure at the beginning that only eth0 was activated on all the
nodes. Nevertheless, I am currently verifying the NIC configuration on all
the nodes and making sure things are as expected.
While trying different things, I did come across this peculiar error which I
had detailed in one of my previous mails in this thread.
I am testing the helloWorld program in the following trivial case:
mpirun -np 1 -host localhost /main/mpiHelloWorld
Which works fine.
But,
mpirun -np 1 -host localhost --debug-daemons /main/mpiHelloWorld
always fails as follows:
Daemon [0,0,1] checking in as pid 2059 on host localhost
[idx1:02059] [0,0,1] orted: received launch callback
idx1 is node 0 of 1
ranks sum to 0
[idx1:02059] [0,0,1] orted_recv_pls: received message from [0,0,0]
[idx1:02059] [0,0,1] orted_recv_pls: received exit
[idx1:02059] *** Process received signal ***
[idx1:02059] Signal: Segmentation fault (11)
[idx1:02059] Signal code: (128)
[idx1:02059] Failing at address: (nil)
[idx1:02059] [ 0] /lib/libpthread.so.0 [0x2afa8c597f30]
[idx1:02059] [ 1] /usr/lib64/libopen-rte.so.0(orte_pls_base_close+0x18)
[0x2afa8be8e2a2]
[idx1:02059] [ 2] /usr/lib64/libopen-rte.so.0(orte_system_finalize+0x70)
[0x2afa8be795ac]
[idx1:02059] [ 3] /usr/lib64/libopen-rte.so.0(orte_finalize+0x20)
[0x2afa8be7675c]
[idx1:02059] [ 4] orted(main+0x8a6) [0x4024ae]
[idx1:02059] *** End of error message ***
The failure happens with more verbose output when using the -d flag.
Does this point to some bug in OpenMPI or am I missing something here?
I have attached ompi_info output on this node.
Regards,
Prasanna.
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