Re: [PATCH kernel v4 11/11] powerpc/powernv/npu: Enable NVLink pass through

2016-05-05 Thread Alistair Popple
On Thu, 5 May 2016 15:49:18 Alexey Kardashevskiy wrote: > On 05/04/2016 12:08 AM, Alistair Popple wrote: > > Hi Alexey, > > > > On Fri, 29 Apr 2016 18:55:24 Alexey Kardashevskiy wrote: > >> IBM POWER8 NVlink systems come with Tesla K40-ish GPUs each of which > >> also has a couple of fast speed lin

Re: [PATCH kernel v4 11/11] powerpc/powernv/npu: Enable NVLink pass through

2016-05-04 Thread Alexey Kardashevskiy
On 05/04/2016 12:08 AM, Alistair Popple wrote: Hi Alexey, On Fri, 29 Apr 2016 18:55:24 Alexey Kardashevskiy wrote: IBM POWER8 NVlink systems come with Tesla K40-ish GPUs each of which also has a couple of fast speed links (NVLink). The interface to links is exposed as an emulated PCI bridge whi

Re: [PATCH kernel v4 11/11] powerpc/powernv/npu: Enable NVLink pass through

2016-05-03 Thread Alistair Popple
Hi Alexey, On Fri, 29 Apr 2016 18:55:24 Alexey Kardashevskiy wrote: > IBM POWER8 NVlink systems come with Tesla K40-ish GPUs each of which > also has a couple of fast speed links (NVLink). The interface to links > is exposed as an emulated PCI bridge which is included into the same > IOMMU group a

[PATCH kernel v4 11/11] powerpc/powernv/npu: Enable NVLink pass through

2016-04-29 Thread Alexey Kardashevskiy
IBM POWER8 NVlink systems come with Tesla K40-ish GPUs each of which also has a couple of fast speed links (NVLink). The interface to links is exposed as an emulated PCI bridge which is included into the same IOMMU group as the corresponding GPU. In the kernel, NPUs get a separate PHB of the PNV_P