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Just a shot in the dark here ... but maybe the person you are responding to got the idea that this is a VM from the fact that TornadoVM literally has VM it it's name...

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It's clarified in the first sentence of the article.

Then why create that confusion with the name?

The VM name came because TornadoVM implements its own set of bytecodes for handling heterogeneous execution. These bytecodes are used for handling JIT compilation, device exploration, data management and live task-migration for heterogeneous devices (multi-core CPUs, GPUs, and FPGAs). We sometimes refer to a VM inside a VM (nested VM). The main VM is the Java Virtual Machine, and TornadoVM sits on top of that.

You can find more information here: https://dl.acm.org/doi/10.1145/3313808.3313819

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