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Dear STKO Team,

I have created a DRM box model following the same approach as presented in the webinar. However, I used different dimensions and a different overall structural configuration.

The model runs successfully and the analysis is completed without any errors. However, at the end of the analysis, no MPCO file is generated.

I have also tried running the analysis with different numbers of processors: 2, 6, 10, and 14. In all cases, the analysis runs successfully, but the same message appears in the black output box, and no MPCO file is created.

Could you please help me identify the reason why the MPCO file is not being generated?

The following message appears in the black output box:

OpenSees -- Open System For Earthquake Engineering Simulation
Pacific Earthquake Engineering Research Center
Version 3.7.2 64-Bit

(c) Copyright 1999-2016 The Regents of the University of California
All Rights Reserved
(Copyright and Disclaimer @ http://www.berkeley.edu/OpenSees/copyright.html)


unable to alloc 42630891 bytes
unable to alloc 42630891 bytes
unable to alloc 43092511 bytes
unable to realloc 15728640 bytes
unable to realloc 15728640 bytes
unable to realloc 254991254 bytes

===================================================================================
= BAD TERMINATION OF ONE OF YOUR APPLICATION PROCESSES
= RANK 0 PID 27900 RUNNING AT DESKTOP-007SF3A
= EXIT STATUS: -1 (ffffffff)
===================================================================================

===================================================================================
= BAD TERMINATION OF ONE OF YOUR APPLICATION PROCESSES
= RANK 1 PID 23928 RUNNING AT DESKTOP-007SF3A
= EXIT STATUS: -1 (ffffffff)
===================================================================================

===================================================================================
= BAD TERMINATION OF ONE OF YOUR APPLICATION PROCESSES
= RANK 2 PID 20384 RUNNING AT DESKTOP-007SF3A
= EXIT STATUS: -1 (ffffffff)
===================================================================================

===================================================================================
= BAD TERMINATION OF ONE OF YOUR APPLICATION PROCESSES
= RANK 3 PID 36892 RUNNING AT DESKTOP-007SF3A
= EXIT STATUS: -2147483645 (80000003)
===================================================================================

===================================================================================
= BAD TERMINATION OF ONE OF YOUR APPLICATION PROCESSES
= RANK 4 PID 26084 RUNNING AT DESKTOP-007SF3A
= EXIT STATUS: -1 (ffffffff)
===================================================================================

===================================================================================
= BAD TERMINATION OF ONE OF YOUR APPLICATION PROCESSES
= RANK 5 PID 25144 RUNNING AT DESKTOP-007SF3A
= EXIT STATUS: -1 (ffffffff)
===================================================================================
Drücken Sie eine beliebige Taste . . .

Thank you very much for your assistance.

Best regards

That error message means that OpenSees crashed.
if it crashed soon before starting the analysis, it makes sense: no MPCO to write to.
Otherwise, the only reason for not writing an MPCO files would be that maybe you defined the recorder after the analysis