Fix hsaKmtRegisterMemory to be a no-op for now and move the multi-GPU
implementation to hsaKmtRegisterMemoryToNodes. Make GPU memory mappings
of host memory visible to all GPUs by default. Device memory is still
visible to the allocating GPU only by default (but can be overridden
with hsaKmtRegisterMemoryToNodes for experimenting with P2P).
Change-Id: I73408afbe3b10c8dad2ab3a780f58413249692e6
hsaKmtAllocMemory only allocates aligned address space and sets up
the scratch_physical aperture to match the allocated address space.
Actual allocation of backing memory happens in hsaKmtMapMemoryToGPU.
Change-Id: Ie709815ab9bedb3d682e096b4005fdfb5e94d3a7
This is a hack to allow the Runtime to allocate system memory with
PreferredNode=0 on a dGPU system. We allocated it from Node 1
instead so that the node 1 GPU can map the memory. A proper fix
will be implemented together with multi-GPU support.
Change-Id: Ieb52599e5275781c04ee34405ea850bf782c523a
The default is non-coherent access for better performance on dGPU.
Disabled hsaKmtSetMemoryPolicy function on dGPU to prevent app from
overriding the APE1 settings at runtime.
Fixed dGPU VM aperture limit to be inclusive.
Change-Id: I378ff74a654f533572775c0c97c19779a56bc6d9
Felix Kuehling
Ben Goz
shaoyunl
Moses Reuben
Oded Gabbay
Xihan Zhang
Alexey Skidanov
Andrew Lewycky