P4 to Git Change 1458879 by gandryey@gera-w8 on 2017/09/14 11:41:44

SWDEV-129129 - [[CQE OCL][Vega vs Fiji] Upto 12% Performance drop observed on VEGA10 compared to FIJI while running BlackMagic Davinci Resolve
	More benchmark tuning:
	- Keep system memory locked in the resource cache. That removes huge amount of lock/unlock calls to OS due to the resource creation and destruciton
	- Reduce the command buffer size to 256 commands and incrrease the amount of CBs to 16
	- Increase the amount of resident resources to 2048

Affected files ...

... //depot/stg/opencl/drivers/opencl/runtime/device/gpu/gpudevice.cpp#574 edit
... //depot/stg/opencl/drivers/opencl/runtime/device/pal/palmemory.cpp#17 edit
... //depot/stg/opencl/drivers/opencl/runtime/device/pal/palresource.cpp#37 edit
... //depot/stg/opencl/drivers/opencl/runtime/device/pal/palvirtual.cpp#58 edit
... //depot/stg/opencl/drivers/opencl/runtime/device/pal/palvirtual.hpp#31 edit

rocclr/runtime/device/pal/palmemory.cpp

@@ -416,7 +416,8 @@ Memory::~Memory() {
   if ((owner() != nullptr) && isHostMemDirectAccess() && !(flags_ & SubMemoryObject) &&
       (memoryType() != Resource::ExternalPhysical)) {
     // Unmap memory if direct access was requested
-    unmap(nullptr);
+    // Note: runtime will perform unmap on the actual resource destruction
+    //unmap(nullptr);
   }
 }