Re: [Qemu-devel] [PATCH] x86: Increase max vcpu number to 352

2017-08-11 Thread Eduardo Habkost
On Thu, Aug 10, 2017 at 02:08:38PM -0400, Konrad Rzeszutek Wilk wrote: > On Wed, Aug 09, 2017 at 11:58:20PM -0400, Lan Tianyu wrote: > > Intel Xeon phi chip will support 352 logical threads. For HPC > > usage case, it will create a huge VM with vcpus number as same as host > > cpus. This patch is t

Re: [Qemu-devel] [PATCH] x86: Increase max vcpu number to 352

2017-08-10 Thread Lan Tianyu
On 2017年08月11日 03:22, Radim Krčmář wrote: > 2017-08-10 15:16-0300, Eduardo Habkost: >> On Thu, Aug 10, 2017 at 02:41:03PM +0200, Radim Krčmář wrote: >>> 2017-08-10 19:02+0800, Lan Tianyu: On 2017年08月10日 18:26, Daniel P. Berrange wrote: > On Thu, Aug 10, 2017 at 06:08:07PM +0800, Lan Tianyu

Re: [Qemu-devel] [PATCH] x86: Increase max vcpu number to 352

2017-08-10 Thread Radim Krčmář
2017-08-10 15:16-0300, Eduardo Habkost: > On Thu, Aug 10, 2017 at 02:41:03PM +0200, Radim Krčmář wrote: > > 2017-08-10 19:02+0800, Lan Tianyu: > > > On 2017年08月10日 18:26, Daniel P. Berrange wrote: > > >> On Thu, Aug 10, 2017 at 06:08:07PM +0800, Lan Tianyu wrote: > > >>> Intel Xeon phi chip will su

Re: [Qemu-devel] [PATCH] x86: Increase max vcpu number to 352

2017-08-10 Thread Eduardo Habkost
On Thu, Aug 10, 2017 at 02:41:03PM +0200, Radim Krčmář wrote: > 2017-08-10 19:02+0800, Lan Tianyu: > > On 2017年08月10日 18:26, Daniel P. Berrange wrote: > >> On Thu, Aug 10, 2017 at 06:08:07PM +0800, Lan Tianyu wrote: > >>> Intel Xeon phi chip will support 352 logical threads. For HPC > >>> usage cas

Re: [Qemu-devel] [PATCH] x86: Increase max vcpu number to 352

2017-08-10 Thread Konrad Rzeszutek Wilk
On Wed, Aug 09, 2017 at 11:58:20PM -0400, Lan Tianyu wrote: > Intel Xeon phi chip will support 352 logical threads. For HPC > usage case, it will create a huge VM with vcpus number as same as host > cpus. This patch is to increase max vcpu number to 352. There is this ioctl called KVM_CAP_MAX_VCPU

Re: [Qemu-devel] [PATCH] x86: Increase max vcpu number to 352

2017-08-10 Thread Daniel P. Berrange
On Thu, Aug 10, 2017 at 02:13:30PM +0200, Paolo Bonzini wrote: > On 10/08/2017 12:08, Lan Tianyu wrote: > > Intel Xeon phi chip will support 352 logical threads. For HPC > > usage case, it will create a huge VM with vcpus number as same as host > > cpus. This patch is to increase max vcpu number to

Re: [Qemu-devel] [PATCH] x86: Increase max vcpu number to 352

2017-08-10 Thread Radim Krčmář
2017-08-10 19:02+0800, Lan Tianyu: > On 2017年08月10日 18:26, Daniel P. Berrange wrote: >> On Thu, Aug 10, 2017 at 06:08:07PM +0800, Lan Tianyu wrote: >>> Intel Xeon phi chip will support 352 logical threads. For HPC >>> usage case, it will create a huge VM with vcpus number as same as host >>> cpus.

Re: [Qemu-devel] [PATCH] x86: Increase max vcpu number to 352

2017-08-10 Thread Paolo Bonzini
On 10/08/2017 12:08, Lan Tianyu wrote: > Intel Xeon phi chip will support 352 logical threads. For HPC > usage case, it will create a huge VM with vcpus number as same as host > cpus. This patch is to increase max vcpu number to 352. Even without Xeon Phi, a 24-core, 8-socket system (E7-8890 v4 fo

Re: [Qemu-devel] [PATCH] x86: Increase max vcpu number to 352

2017-08-10 Thread Lan Tianyu
On 2017年08月10日 18:26, Daniel P. Berrange wrote: > On Thu, Aug 10, 2017 at 06:08:07PM +0800, Lan Tianyu wrote: >> Intel Xeon phi chip will support 352 logical threads. For HPC >> usage case, it will create a huge VM with vcpus number as same as host >> cpus. This patch is to increase max vcpu number

Re: [Qemu-devel] [PATCH] x86: Increase max vcpu number to 352

2017-08-10 Thread Daniel P. Berrange
On Thu, Aug 10, 2017 at 06:08:07PM +0800, Lan Tianyu wrote: > Intel Xeon phi chip will support 352 logical threads. For HPC > usage case, it will create a huge VM with vcpus number as same as host > cpus. This patch is to increase max vcpu number to 352. If we pick arbitray limits based on size of