MATLAB: Do I receive the error “illegal instruction detected” when using MATLAB 6.5 (R13) under IBM

5.16.5aixcrashdetectedibmillegalinstructionMATLABr13segfaultsegmentationviolation

Why do I receive the error "illegal instruction detected" when using MATLAB 6.5 (R13) under IBM?
I get the following error when I use commands such as PLOT, BENCH, HELPWIN, DEMO, etc.
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         Illegal instruction detected at Fri Sep 27 16:05:21 2002
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 Configuration:
   MATLAB Version:   6.5.0.180913a (R13)
   Operating System: AIX 1 5 0020FEDA4C00
   Window System:    StarNet Communications Corp. (5223), display
 squeegy.ee.columbia.edu:0.0
   Current Visual:   0x20 (class 4, depth 24)
   Virtual Machine:  Java 1.2.2 with IBM Corporation Classic VM
     (J2RE 1.2.2 IBM build ca122-20001026 (JIT enabled: jitc))

Best Answer

This error is due to the interaction between MATLAB and the JVM. The workaround is to run MATLAB without using the JVM by using the -nojvm flag by typing the following at the UNIX shell prompt:
 matlab -nojvm
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