It's worth noting that this isn't just a research language -- it's used in practice for writing drivers:
P got its start in Microsoft software development when it was used to ship the USB 3.0 drivers in Windows 8.1 and Windows Phone. These drivers handle one of the most important peripherals in the Windows ecosystem and run on hundreds of millions of devices today. P enabled the detection and debugging of hundreds of race conditions and Heisenbugs early on in the design of the drivers, and is now extensively used for driver development in Windows.
P got its start in Microsoft software development when it was used to ship the USB 3.0 drivers in Windows 8.1 and Windows Phone. These drivers handle one of the most important peripherals in the Windows ecosystem and run on hundreds of millions of devices today. P enabled the detection and debugging of hundreds of race conditions and Heisenbugs early on in the design of the drivers, and is now extensively used for driver development in Windows.