Mohammed Naser mnaser

## OpenStack_consumer_GPU_passthrough.md

      
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                mnaser
                / OpenStack_consumer_GPU_passthrough.md
            
            
              Created
              November 21, 2017 03:25
                — forked from claudiok/OpenStack_consumer_GPU_passthrough.md
            
              
                Consumer-grade GPU passthrough in an OpenStack system (NVIDIA GPUs)
              
          
    Consumer-grade GPUs in an OpenStack system (NVIDIA GPUs)

Assumptions

This assumes you have GTX980 cards in your system (PCI id 10de:13c0 & 10de:0fbb per card). Just add more IDs for other cards in order to make this more generic. This also assumes nova uses qemu-kvm as the virtualization hypervisor (qemu-system-x86_64). This seems to be the default on OpenStack Newton when installed using openstack-ansible.
We assume OpenStack Newton is pre-installed and that we are working on a Nova compute node. This has been tested on an Ubuntu 16.04 system where I installed OpenStack AIO version 14.0.0 (different from the git tag used in the instructions!): http://docs.openstack.org/developer/openstack-ansible/developer-docs/quickstart-aio.html
Prepare the system for GPU passthrough (set up IOMMU/vfio/...)

Note: This is heavily based on information from https://wiki.archlinux.org/index.php/PCI_passthrough_via_OVMF#Enabling_IOMMU adapted for Ubuntu 16.04

  
## my_model.rb
class MyModel < ActiveRecord::Base
  after_initialize :setup_defaults

  attr_accessor :foo_bar

  def setup_defaults
    foo_bar ||= "my default value"
  end
end
	class MyModel < ActiveRecord::Base
	after_initialize :setup_defaults

	attr_accessor :foo_bar

	def setup_defaults
	foo_bar \|\|= "my default value"
	end
	end