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Check OCL device has enough memory for buffers

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This commit is contained in:
Tom Deakin 2016-05-03 11:23:36 +01:00
parent 2738e75b04
commit 26bb912646
1 changed files with 10 additions and 2 deletions
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12
src/OCLStream.cpp
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@ -53,8 +53,6 @@ OCLStream<T>::OCLStream(const unsigned int ARRAY_SIZE, const int device_index)
if (!cached) if (!cached)
getDeviceList(); getDeviceList();
array_size = ARRAY_SIZE;
// Setup default OpenCL GPU // Setup default OpenCL GPU
if (device_index >= devices.size()) if (device_index >= devices.size())
throw std::runtime_error("Invalid device index"); throw std::runtime_error("Invalid device index");
@ -85,6 +83,16 @@ OCLStream<T>::OCLStream(const unsigned int ARRAY_SIZE, const int device_index)
add_kernel = new cl::KernelFunctor<cl::Buffer, cl::Buffer, cl::Buffer>(program, "add"); add_kernel = new cl::KernelFunctor<cl::Buffer, cl::Buffer, cl::Buffer>(program, "add");
triad_kernel = new cl::KernelFunctor<cl::Buffer, cl::Buffer, cl::Buffer>(program, "triad"); triad_kernel = new cl::KernelFunctor<cl::Buffer, cl::Buffer, cl::Buffer>(program, "triad");
array_size = ARRAY_SIZE;
// Check buffers fit on the device
cl_ulong totalmem = device.getInfo<CL_DEVICE_GLOBAL_MEM_SIZE>();
cl_ulong maxbuffer = device.getInfo<CL_DEVICE_MAX_MEM_ALLOC_SIZE>();
if (maxbuffer < sizeof(T)*ARRAY_SIZE)
throw std::runtime_error("Device cannot allocate a buffer big enough");
if (totalmem < 3*sizeof(T)*ARRAY_SIZE)
throw std::runtime_error("Device does not have enough memory for all 3 buffers");
// Create buffers // Create buffers
d_a = cl::Buffer(context, CL_MEM_READ_WRITE, sizeof(T) * ARRAY_SIZE); d_a = cl::Buffer(context, CL_MEM_READ_WRITE, sizeof(T) * ARRAY_SIZE);
d_b = cl::Buffer(context, CL_MEM_READ_WRITE, sizeof(T) * ARRAY_SIZE); d_b = cl::Buffer(context, CL_MEM_READ_WRITE, sizeof(T) * ARRAY_SIZE);