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@ -84,19 +84,26 @@ static bool isCudaDriverAvailable(int version)
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if (!nvcuda.isValid())
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{
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nvDebug("*** CUDA driver not found.\n");
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return false;
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}
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if (version >= 2000)
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{
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void * address = nvcuda.bindSymbol("cuStreamCreate");
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if (address == NULL) return false;
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if (address == NULL) {
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nvDebug("*** CUDA driver version < 2.0.\n");
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return false;
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}
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}
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if (version >= 2010)
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{
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void * address = nvcuda.bindSymbol("cuModuleLoadDataEx");
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if (address == NULL) return false;
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if (address == NULL) {
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nvDebug("*** CUDA driver version < 2.1.\n");
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return false;
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}
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}
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if (version >= 2020)
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@ -104,16 +111,23 @@ static bool isCudaDriverAvailable(int version)
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typedef CUresult (CUDAAPI * PFCU_DRIVERGETVERSION)(int * version);
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PFCU_DRIVERGETVERSION driverGetVersion = (PFCU_DRIVERGETVERSION)nvcuda.bindSymbol("cuDriverGetVersion");
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if (driverGetVersion == NULL) return false;
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if (driverGetVersion == NULL) {
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nvDebug("*** CUDA driver version < 2.2.\n");
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return false;
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}
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int driverVersion;
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if (driverGetVersion(&driverVersion) != CUDA_SUCCESS) return false;
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CUresult err = driverGetVersion(&driverVersion);
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if (err != CUDA_SUCCESS) {
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nvDebug("*** Error querying driver version: '%s'.\n", cudaGetErrorString((cudaError_t)err));
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return false;
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}
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return driverVersion >= version;
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}
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#endif // HAVE_CUDA
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return false;
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return true;
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}
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@ -121,10 +135,13 @@ static bool isCudaDriverAvailable(int version)
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bool nv::cuda::isHardwarePresent()
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{
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#if defined HAVE_CUDA
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#if NV_OS_WIN32
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//if (isWindowsVista()) return false;
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//if (isWindowsVista() || !isWow32()) return false;
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#endif
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// Make sure that CUDA driver matches CUDA runtime.
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if (!isCudaDriverAvailable(CUDART_VERSION))
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{
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nvDebug("CUDA driver not available for CUDA runtime %d\n", CUDART_VERSION);
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return false;
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}
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int count = deviceCount();
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if (count == 1)
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{
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@ -137,16 +154,10 @@ bool nv::cuda::isHardwarePresent()
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{
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return false;
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}
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// Make sure that CUDA driver matches CUDA runtime.
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if (!isCudaDriverAvailable(CUDART_VERSION))
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{
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return false;
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}
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// @@ Make sure that warp size == 32
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}
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// @@ Make sure that warp size == 32
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return count > 0;
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#else
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return false;
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@ -205,8 +216,24 @@ bool nv::cuda::setDevice(int i)
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nvCheck(i < deviceCount());
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#if defined HAVE_CUDA
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cudaError_t result = cudaSetDevice(i);
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if (result != cudaSuccess) {
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nvDebug("*** CUDA Error: %s\n", cudaGetErrorString(result));
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}
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return result == cudaSuccess;
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#else
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return false;
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#endif
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}
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void nv::cuda::exit()
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{
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#if defined HAVE_CUDA
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cudaError_t result = cudaThreadExit();
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if (result != cudaSuccess) {
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nvDebug("*** CUDA Error: %s\n", cudaGetErrorString(result));
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}
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#endif
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}
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