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Cycles: Adjust global size for OpenCL CPU devices to make them faster

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This commit is contained in:
Mai Lavelle
2017-03-16 02:57:45 -04:00
parent d68a84d1d2
commit 4833a71621
1 changed files with 10 additions and 1 deletions
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11
intern/cycles/device/opencl/opencl_split.cpp
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@@ -346,9 +346,18 @@ public:
virtual int2 split_kernel_global_size(device_memory& kg, device_memory& data, DeviceTask */*task*/)
{
cl_device_type type;
clGetDeviceInfo(device->cdDevice, CL_DEVICE_TYPE, sizeof(cl_device_type), &type, NULL);
/* Use small global size on CPU devices as it seems to be much faster. */
if(type == CL_DEVICE_TYPE_CPU) {
VLOG(1) << "Global size: (64, 64).";
return make_int2(64, 64);
}
cl_ulong max_buffer_size;
clGetDeviceInfo(device->cdDevice, CL_DEVICE_MAX_MEM_ALLOC_SIZE, sizeof(cl_ulong), &max_buffer_size, NULL);
VLOG(1) << "Maximum device allocation side: "
VLOG(1) << "Maximum device allocation size: "
<< string_human_readable_number(max_buffer_size) << " bytes. ("
<< string_human_readable_size(max_buffer_size) << ").";