The MPI_Abort() function was called after MPI_FINALIZE was invoked. about strumpack HOT 4 OPEN

Try enclosing everything from line 38 to line 112 in parentheses { }.
Then the destructor for the BLACSGrid and the DistributedMatrix will be called before Cblacs_exit and MPI_Finalize.

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Hi Pieter,

Thank you, that works.

However I have another issue with the same program. I added solving a dense system with HSS and when I run it without mpirun or with mpirun -np 1 it fails at
HSSMatrixMPI<double> H(A, hss_opts);

with

$ ./central 250
[nv001:81458] *** An error occurred in MPI_Group_incl
[nv001:81458] *** reported by process [1282277377,0]
[nv001:81458] *** on communicator MPI_COMM_WORLD
[nv001:81458] *** MPI_ERR_RANK: invalid rank
[nv001:81458] *** MPI_ERRORS_ARE_FATAL (processes in this communicator will now abort,
[nv001:81458] ***    and potentially your MPI job)

Tests with more than mpi process run fine.

strumpack_simple_solver.tar.gz

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Yes, that is a known problem. It's not easy to fix. I will need to spend some time on that.
You can use HSSMatrix instead. Sorry for the inconvenience.

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OK. Thanks.

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