Re: Cores from Multiple Physical Hosts in VM
It is a hypervisor restriction not CS. I can wonder some work around like using a distributed shared memory system and on top of it installing a hypervisor like Xen and XCP. Then, it would work since the DSM would simulate a single machine with the resource of all machines on the cluster. Of course, there is a trade of, DSM generates a pretty good overhead, but it is interesting to try it out and check the performance. 2013/11/16 Robert Gabriel epheme...@gmail.com On 15 November 2013 15:47, m...@kelceydamage.com m...@kelceydamage.com wrote: The only people I have seen that have macro VMs working was some company out of Boston making virtual router/networking services with special interconnects that allowed process/thread striping over multiple hosts/sockets. Sent from my HTC - Reply message - From: Sebastien Goasguen run...@gmail.com To: users@cloudstack.apache.org Subject: Cores from Multiple Physical Hosts in VM Date: Fri, Nov 15, 2013 2:08 AM On Nov 13, 2013, at 7:03 AM, Robert Gabriel epheme...@gmail.com wrote: Hi, Is it possible to do the below? Thank you. Answered by sgordon: It is my understanding that this is not currently possible, there was some discussion at the design summit (I think in the Libvirt driver roadmap session) about making the scheduler NUMA aware which would allow such configurations on hardware that supports NUMA but this is currently unimplemented. In reply to ephemeric's question: Cores from Multiple Physical Hosts in VM Tags: vcpus, aggregates, hosts, multiple, physical. Hi, Pardon my ignorance as I have never looked at cloud computing. Is it possible to create a VM and assign to it cores from multiple physical hosts for high vcpu numbers? We have the following problem: Splunk running 38 concurrent searches on a blade that only has 16 cores. By creating a VM and combining the cores from two blades, hence 32 vcpus in total somehow? As far as I know this is not possible. That said I would be very surprise if Splunk could not use multiple machines. So just run multiple instances (separate VMs) that point to the same data store. I'm not sure if this is possible. Thank you. To change frequency, language and content of these alerts, please visit your user profile https://ask.openstack.org/en/users/2044/ephemeric/subscriptions/. If you believe that this message was sent in an error, please email about it the forum administrator at communitym...@openstack.org. Thank you, at least gives me a direction. -- Rafael Weingärtner
Re: Cores from Multiple Physical Hosts in VM
The only people I have seen that have macro VMs working was some company out of Boston making virtual router/networking services with special interconnects that allowed process/thread striping over multiple hosts/sockets. Sent from my HTC - Reply message - From: Sebastien Goasguen run...@gmail.com To: users@cloudstack.apache.org Subject: Cores from Multiple Physical Hosts in VM Date: Fri, Nov 15, 2013 2:08 AM On Nov 13, 2013, at 7:03 AM, Robert Gabriel epheme...@gmail.com wrote: Hi, Is it possible to do the below? Thank you. Answered by sgordon: It is my understanding that this is not currently possible, there was some discussion at the design summit (I think in the Libvirt driver roadmap session) about making the scheduler NUMA aware which would allow such configurations on hardware that supports NUMA but this is currently unimplemented. In reply to ephemeric's question: Cores from Multiple Physical Hosts in VM Tags: vcpus, aggregates, hosts, multiple, physical. Hi, Pardon my ignorance as I have never looked at cloud computing. Is it possible to create a VM and assign to it cores from multiple physical hosts for high vcpu numbers? We have the following problem: Splunk running 38 concurrent searches on a blade that only has 16 cores. By creating a VM and combining the cores from two blades, hence 32 vcpus in total somehow? As far as I know this is not possible. That said I would be very surprise if Splunk could not use multiple machines. So just run multiple instances (separate VMs) that point to the same data store. I'm not sure if this is possible. Thank you. To change frequency, language and content of these alerts, please visit your user profilehttps://ask.openstack.org/en/users/2044/ephemeric/subscriptions/. If you believe that this message was sent in an error, please email about it the forum administrator at communitym...@openstack.org.
Re: Cores from Multiple Physical Hosts in VM
On 15 November 2013 15:47, m...@kelceydamage.com m...@kelceydamage.com wrote: The only people I have seen that have macro VMs working was some company out of Boston making virtual router/networking services with special interconnects that allowed process/thread striping over multiple hosts/sockets. Sent from my HTC - Reply message - From: Sebastien Goasguen run...@gmail.com To: users@cloudstack.apache.org Subject: Cores from Multiple Physical Hosts in VM Date: Fri, Nov 15, 2013 2:08 AM On Nov 13, 2013, at 7:03 AM, Robert Gabriel epheme...@gmail.com wrote: Hi, Is it possible to do the below? Thank you. Answered by sgordon: It is my understanding that this is not currently possible, there was some discussion at the design summit (I think in the Libvirt driver roadmap session) about making the scheduler NUMA aware which would allow such configurations on hardware that supports NUMA but this is currently unimplemented. In reply to ephemeric's question: Cores from Multiple Physical Hosts in VM Tags: vcpus, aggregates, hosts, multiple, physical. Hi, Pardon my ignorance as I have never looked at cloud computing. Is it possible to create a VM and assign to it cores from multiple physical hosts for high vcpu numbers? We have the following problem: Splunk running 38 concurrent searches on a blade that only has 16 cores. By creating a VM and combining the cores from two blades, hence 32 vcpus in total somehow? As far as I know this is not possible. That said I would be very surprise if Splunk could not use multiple machines. So just run multiple instances (separate VMs) that point to the same data store. I'm not sure if this is possible. Thank you. To change frequency, language and content of these alerts, please visit your user profile https://ask.openstack.org/en/users/2044/ephemeric/subscriptions/. If you believe that this message was sent in an error, please email about it the forum administrator at communitym...@openstack.org. Thank you, at least gives me a direction.
Cores from Multiple Physical Hosts in VM
Hi, Is it possible to do the below? Thank you. Answered by sgordon: It is my understanding that this is not currently possible, there was some discussion at the design summit (I think in the Libvirt driver roadmap session) about making the scheduler NUMA aware which would allow such configurations on hardware that supports NUMA but this is currently unimplemented. In reply to ephemeric's question: Cores from Multiple Physical Hosts in VM Tags: vcpus, aggregates, hosts, multiple, physical. Hi, Pardon my ignorance as I have never looked at cloud computing. Is it possible to create a VM and assign to it cores from multiple physical hosts for high vcpu numbers? We have the following problem: Splunk running 38 concurrent searches on a blade that only has 16 cores. By creating a VM and combining the cores from two blades, hence 32 vcpus in total somehow? I'm not sure if this is possible. Thank you. To change frequency, language and content of these alerts, please visit your user profilehttps://ask.openstack.org/en/users/2044/ephemeric/subscriptions/. If you believe that this message was sent in an error, please email about it the forum administrator at communitym...@openstack.org.
