5.19. Drivers and utilities

1.3.0

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Kernel Module
- Unloading the driver from the host (for example, in order to pass the PCIe device to a virtual machine) no longer causes a kernel thread hang for C600 cards with firmware that enables PCIe bifurcation (such as firmware version 2.7.1) in servers which have PCIe bifurcation enabled.

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Command-line tools
- The command line tools packaged with the SDK do not work reliably. In particular, the gc-flops command may report obviously incorrect results. We recommend installing the separate command-line tools package from the Graphcore software downloads page. This is known to work correctly.

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Kernel Module
- Correct handling of situation when the VM is not shutdown properly. The Kernel Module is now able to successfully initialise PCIe cards during restart of the VM without requiring a cold boot.
- Correct calculation of temperature sensor values. This previously calculated the average using only three out of the four readings.

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