NAME¶

rocm-qemu-run - rocm-qemu-run

DESCRIPTION¶

Boot an amd64 QEMU VM to a console, passing through GPUs.

By default, all GPUs assigned to vfio-pci are passed through. This can be overridden with -g, which can be specified multiple times. [NOTE: multi-GPU is untested, and therefore disabled for now.]

The VM will boot an amd64 image in EFI mode. The EFIVARS file will be a clean copy at every boot. The image will be writeable, so use qemu-img(1) to create a snapshot first if you'd like to be able to revert your changes.

All [qemu options] are passed on to the QEMU command line, in case you want to add more configuration to the VM.

This utility assumes that the invoking user has all the necessary permissions required in order to effectively and efficiently operate the VM, most notably that the user has access to /dev/kvm. When in doubt, try running the script as root.

OPTIONS¶

-h

Show this help

-c CPUS

Number of guest CPUs (default: 9)

-d DIR

Mount host dir DIR as /shared in the guest

-g GPU

PCI slot ID of GPU to pass through (eg: 09:00.0)

-m MEM

Guest RAM (default: 23508)

-p SSHPORT Forward host port PORT to guest port 22

-s

Boot the VM in snapshot mode (changes are discarded)

EXAMPLES¶

# Configure the system for GPU pass-through

$ rocm-qemu-setup -u <user>

# Create an image

$ sudo rocm-qemu-create unstable.img
$ sudo chown $USER: unstable.img

# Boot the image above to a console # This will pass through all GPUs assigned to vfio-pci

$ bin/rocm-qemu-run unstable.img

# Like above, but use 4 CPUs and 8GB of RAM

$ bin/rocm-qemu-run -c 4 -m 8192 unstable.img

# Like above, but only pass through GPU 09:00.0

$ bin/rocm-qemu-run unstable.img -g 09:00.0

# Forward host port 10022 to guest port 22. Connect with: # ssh -p 10022 -o CheckHostIP=no -o StrictHostKeyChecking=no root@localhost

$ bin/rocm-qemu-run -p 10022 -d /some/host/dir unstable-amd64.img

# Snapshot mode (no changes to the image will be saved)

$ bin/rocm-qemu-run -s unstable.img

# Share host directory /tmp/foo # The directory will be mounted at /shared within the guest

$ bin/rocm-qemu-run -d /tmp/foo unstable.img