Dear MPI users,
I have a small serial program that reads a sparse matrix from a file
and factorizes it
using the sparse direct solvers included in PARDISO MKL. When I execute
the program with
the matrix of interest, PARDISO factorizes it succesfully. No SIGSEV is
produced. However,
if I transform this small sequential program to a message-passing
program (i.e., wrapping its codes
around MPI_INIT/MPI_FINALIZE and executing it using mpirun -np 1
PROGRAM) then a SIGSEV appears. Therefore, the problem seems
to be related to the combination of PARDISO MKL and the message-passing
environment (OpenMPI).
Some of the characteritics of the environment are:
- MPI: OpenMPI 1.5.4 (find attached the output from ompi_info --all)
- fortran compiler: ifort version 13.0.1
- Linux Kernel: Linux version 3.0.13-0.27-default (geeko_at_buildhost)
(gcc version 4.3.4 [gcc-4_3-branch revision 152973]
(SUSE Linux) ) #1 SMP Wed Feb 15 13:33:49 UTC 2012 (d73692b)
- MKL libraries: MKL/13.0.1
- CPU: Intel(R) Xeon(R) CPU E5-2670 0 @ 2.60GHz
I have also reported this issue on the Intel MKL forum,
and provided a reproducer of the issue on:
http://software.intel.com/en-us/forums/topic/375486
The "weird" observation is that I could reproduce
the issue on three machines based on the Intel SandyBridge-based
multicore-CPUs, while I could not on a pair of non SandyBridge-based
Intel archictures, using exactly the same software
stack. I am afraid that Intel SandyBridge-based CPUs have any
particularity with respect to virtual memory handling that
cause PARDISO MKL to SIGSEV once MPI_INIT has been called.
Could u please help me to find the root-cause of this issue?
Thanks in advance.
Best regards,
Alberto.
--
Alberto F. MartÃn-Huertas
Centre Internacional de Mètodes Numèrics a l'Enginyeria (CIMNE)
Parc Mediterrani de la Tecnologia, UPC
Esteve Terradas 5, Building C3, Office 210,
08860 Castelldefels (Barcelona, Spain)
Tel.: (+34) 9341 34223
e-mail: amartin_at_[hidden]
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