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Right now we have some control over the process, having the tool.

Is the comma necessary?

Thanks in advance!
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Yes, I'd say it's necessary.
Comments  
N2G,

Right now we have some control over the process, having the tool.
This sentence sounds incomplete to me. The bold part has no meaning or any significance to the main sentence.
If you want to use "having" as a participle clause, yo umay say something like:
Having the tool in poorly maintained condition, it's difficult to establish a sustainable process control.
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Thanks for your comment, Goodman. It sounds insignificant to me too as I left out the details.

How about the following?

Right now we have some control over the process, having the tool to regulate the heat transfer from the processor to the heatsink.

Back to my original question, is the comma necessary?
 BarbaraPA's reply was promoted to an answer.