Default value for numCapabilities?

Bryan O'Sullivan bos at
Wed Apr 28 02:02:14 EDT 2010

On Tue, Apr 27, 2010 at 7:02 PM, Dimitry Golubovsky <golubovsky at>wrote:

> This is probably about forkProcess rather than forkIO/forkOS, but why
> this limitation?

That's a standard Unix limitation. A child process is forked with one
thread, so if the parent has multiple threads running, it's overwhelmingly
likely that the child will be unable to execute correctly.
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