Issues on 64 bit Ubuntu (not 32 bit or macOS etc.)

[Oliver Urbann]

Hi everyone,

I have written a robotic simulator for a Nao robot. I was working for several months on macOS, but now I need to execute it for some ML experiments on a large server. There, executing a simple walk leads on Ubuntu 64 bit to the following error after some steps: 

ODE INTERNAL ERROR 1: assertion "d[i] != dReal(0.0)" failed in dxLDLTRemove() [matrix.cpp:438]
Aborted (core dumped)

Strangely enough, everything works perfectly with 32 bit Ubuntu/Debian, Windows and also macOS (all 64 bit). I tried various configure flags, nothing helps, except avoiding a 64 bit Linux. Does somebody have an idea?

Best regards,

Oliver

[Oleh Derevenko]

Hi Oliver,

You should be able to open the core file (make a debug build of ODE without any optimizations) and unwind the call path back to see where the invalid value appears from.

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From: ode-...@googlegroups.com <ode-...@googlegroups.com> on behalf of Oliver Urbann <oliver...@gmail.com>
Sent: Thursday, February 8, 2024 17:43
To: ode-users <ode-...@googlegroups.com>
Subject: [ode-users] Issues on 64 bit Ubuntu (not 32 bit or macOS etc.)

 

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