allow non AMD OpenCL driver and devices

- add CLI flag to explicitly use non AMD OpenCL and devices
- adjust OpenCL output (use OpenCL instead of AMD if --altOpenCL is sued)
- optimize NVIDIA OpenCL auto suggestion

2 files changed, 23 insertions, 8 deletions

diff --git a/xmrstak/backend/amd/amd_gpu/gpu.cpp b/xmrstak/backend/amd/amd_gpu/gpu.cpp
index 79e80bd..9a4ba73 100644
--- a/xmrstak/backend/amd/amd_gpu/gpu.cpp
+++ b/xmrstak/backend/amd/amd_gpu/gpu.cpp
@@ -675,11 +675,18 @@ std::vector<GpuContext> getAMDDevices(int index)
 		}
 
 		std::string devVendor(devVendorVec.data());
-		if( devVendor.find("Advanced Micro Devices") != std::string::npos || devVendor.find("AMD") != std::string::npos)
+
+		bool isAMDDevice = devVendor.find("Advanced Micro Devices") != std::string::npos || devVendor.find("AMD") != std::string::npos;
+		bool isNVIDIADevice = devVendor.find("NVIDIA Corporation") != std::string::npos || devVendor.find("NVIDIA") != std::string::npos;
+
+		std::string selectedOpenCLVendor = xmrstak::params::inst().openCLVendor;
+		if((isAMDDevice && selectedOpenCLVendor == "AMD") || (isNVIDIADevice && selectedOpenCLVendor == "NVIDIA"))
 		{
 			GpuContext ctx;
 			std::vector<char> devNameVec(1024);
 			size_t maxMem;
+			if( devVendor.find("NVIDIA Corporation") != std::string::npos)
+				ctx.isNVIDIA = true;
 
 			if((clStatus = clGetDeviceInfo(device_list[k], CL_DEVICE_MAX_COMPUTE_UNITS, sizeof(int), &(ctx.computeUnits), NULL)) != CL_SUCCESS)
 			{
@@ -699,6 +706,10 @@ std::vector<GpuContext> getAMDDevices(int index)
 				continue;
 			}
 
+			// the allocation for NVIDIA OpenCL is not limited to 1/4 of the GPU memory per allocation
+			if(ctx.isNVIDIA)
+				maxMem = ctx.freeMem;
+
 			if((clStatus = clGetDeviceInfo(device_list[k], CL_DEVICE_NAME, devNameVec.size(), devNameVec.data(), NULL)) != CL_SUCCESS)
 			{
 				printer::inst()->print_msg(L1,"WARNING: %s when calling clGetDeviceInfo to get CL_DEVICE_NAME for device %u.", err_to_str(clStatus), k);
@@ -747,13 +758,15 @@ int getAMDPlatformIdx()
 
 			clGetPlatformInfo(platforms[i], CL_PLATFORM_VENDOR, infoSize, platformNameVec.data(), NULL);
 			std::string platformName(platformNameVec.data());
-			if( platformName.find("Advanced Micro Devices") != std::string::npos ||
+
+			bool isAMDOpenCL = platformName.find("Advanced Micro Devices") != std::string::npos ||
 				platformName.find("Apple") != std::string::npos ||
-				platformName.find("Mesa") != std::string::npos
-			)
+				platformName.find("Mesa") != std::string::npos;
+			bool isNVIDIADevice = platformName.find("NVIDIA Corporation") != std::string::npos || platformName.find("NVIDIA") != std::string::npos;
+			std::string selectedOpenCLVendor = xmrstak::params::inst().openCLVendor;
+			if((isAMDOpenCL && selectedOpenCLVendor == "AMD") || (isNVIDIADevice && selectedOpenCLVendor == "NVIDIA"))
 			{
-
-				printer::inst()->print_msg(L0,"Found AMD platform index id = %i, name = %s",i , platformName.c_str());
+				printer::inst()->print_msg(L0,"Found %s platform index id = %i, name = %s", selectedOpenCLVendor.c_str(), i , platformName.c_str());
 				if(platformName.find("Mesa") != std::string::npos)
 					mesaPlatform = i;
 				else
@@ -819,7 +832,7 @@ size_t InitOpenCL(GpuContext* ctx, size_t num_gpus, size_t platform_idx)
 	std::vector<char> platformNameVec(infoSize);
 	clGetPlatformInfo(PlatformIDList[platform_idx], CL_PLATFORM_VENDOR, infoSize, platformNameVec.data(), NULL);
 	std::string platformName(platformNameVec.data());
-	if( platformName.find("Advanced Micro Devices") == std::string::npos)
+	if(xmrstak::params::inst().openCLVendor == "AMD" && platformName.find("Advanced Micro Devices") == std::string::npos)
 	{
 		printer::inst()->print_msg(L1,"WARNING: using non AMD device: %s", platformName.c_str());
 	}
@@ -907,7 +920,8 @@ size_t InitOpenCL(GpuContext* ctx, size_t num_gpus, size_t platform_idx)
 		{
 			size_t reduced_intensity = (ctx[i].rawIntensity / ctx[i].workSize) * ctx[i].workSize;
 			ctx[i].rawIntensity = reduced_intensity;
-			printer::inst()->print_msg(L0, "WARNING AMD: gpu %d intensity is not a multiple of 'worksize', auto reduce intensity to %d", ctx[i].deviceIdx, int(reduced_intensity));
+			const std::string backendName = xmrstak::params::inst().openCLVendor;
+			printer::inst()->print_msg(L0, "WARNING %s: gpu %d intensity is not a multiple of 'worksize', auto reduce intensity to %d", backendName.c_str(), ctx[i].deviceIdx, int(reduced_intensity));
 		}
 
 		if((ret = InitOpenCLGpu(opencl_ctx, &ctx[i], source_code.c_str())) != ERR_SUCCESS)
diff --git a/xmrstak/backend/amd/amd_gpu/gpu.hpp b/xmrstak/backend/amd/amd_gpu/gpu.hpp
index 0db6c90..5ab80b8 100644
--- a/xmrstak/backend/amd/amd_gpu/gpu.hpp
+++ b/xmrstak/backend/amd/amd_gpu/gpu.hpp
@@ -27,6 +27,7 @@ struct GpuContext
 	size_t workSize;
 	int stridedIndex;
 	int memChunk;
+	bool isNVIDIA = false;
 	int compMode;
 
 	/*Output vars*/