fix duplicated nonce usage

- avoid that a nonce which not fits to the current job is used (check jobId after start nonce is consumed)
- move jobId check into the if condition to get a new bunch of nonces
- CPU: add jobId validation after the start nonce is consumed

1 files changed, 3 insertions, 3 deletions

diff --git a/xmrstak/backend/nvidia/minethd.cpp b/xmrstak/backend/nvidia/minethd.cpp
index a21e525..16171e1 100644
--- a/xmrstak/backend/nvidia/minethd.cpp
+++ b/xmrstak/backend/nvidia/minethd.cpp
@@ -275,10 +275,10 @@ void minethd::work_main()
 			if((round_ctr++ & 0xF) == 0)
 			{
 				globalStates::inst().calc_start_nonce(iNonce, oWork.bNiceHash, h_per_round * 16);
+				// check if the job is still valid, there is a small posibility that the job is switched
+				if(globalStates::inst().iGlobalJobNo.load(std::memory_order_relaxed) != iJobNo)
+					break;
 			}
-			// check if the job is still valid, there is a small posibility that the job is switched
-			if(globalStates::inst().iGlobalJobNo.load(std::memory_order_relaxed) != iJobNo)
-				break;
 
 			uint32_t foundNonce[10];
 			uint32_t foundCount;