From f626f07254413891778bf3ed53629f7698bf13e0 Mon Sep 17 00:00:00 2001
From: psychocrypt <psychocryptHPC@gmail.com>
Date: Sat, 24 Aug 2019 21:22:50 +0200
Subject: [PATCH] AMD: optimize unroll for rx5700

solve #2509

- use unroll 8 for RX5700
- use 2 threads for cnr_gpu and RX5700
---
 xmrstak/backend/amd/autoAdjust.hpp | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/xmrstak/backend/amd/autoAdjust.hpp b/xmrstak/backend/amd/autoAdjust.hpp
index 858c03844..3b8c56785 100644
--- a/xmrstak/backend/amd/autoAdjust.hpp
+++ b/xmrstak/backend/amd/autoAdjust.hpp
@@ -181,6 +181,7 @@ class autoAdjust
 			}
 
 			uint32_t numUnroll = 8;
+			uint32_t numThreads = 1u;
 
 			if(useCryptonight_gpu)
 			{
@@ -188,7 +189,11 @@ class autoAdjust
 				// @todo check again after all optimizations
 				maxThreads = ctx.computeUnits * 6 * 8;
 				ctx.stridedIndex = 0;
-				numUnroll = 1;
+				// do not change unroll for AMD RX5700 but set 2 threads per gpu
+				if(ctx.name.compare("gfx1010") == 0)
+					numThreads = 2;
+				else
+					numUnroll = 1;
 			}
 
 			// keep 128MiB memory free (value is randomly chosen) from the max available memory
@@ -196,7 +201,6 @@ class autoAdjust
 
 			size_t memPerThread = std::min(ctx.maxMemPerAlloc, maxAvailableFreeMem);
 
-			uint32_t numThreads = 1u;
 			if(ctx.isAMD && !useCryptonight_gpu)
 			{
 				numThreads = 2;