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GPU Package: Fixing logic in OpenCL backend that could result in unnecessary device allocations.

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This commit is contained in:
W. Michael Brown
2022-09-28 22:30:09 -07:00
parent 6e34d21b24
commit 71464d8314
5 changed files with 49 additions and 22 deletions
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9
lib/gpu/geryon/ocl_device.h
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@ -99,6 +99,7 @@ struct OCLProperties {
int cl_device_version;
bool has_subgroup_support;
bool has_shuffle_support;
bool shared_main_memory;
};
/// Class for looking at data parallel device properties
@ -226,7 +227,7 @@ class UCL_Device {
inline bool shared_memory() { return shared_memory(_device); }
/// Returns true if host memory is efficiently addressable from device
inline bool shared_memory(const int i)
{ return _shared_mem_device(_cl_devices[i]); }
{ return _properties[i].shared_main_memory; }
/// Returns preferred vector width
inline int preferred_fp32_width() { return preferred_fp32_width(_device); }
@ -582,8 +583,9 @@ void UCL_Device::add_properties(cl_device_id device_list) {
op.preferred_vector_width64=double_width;
// Determine if double precision is supported: All bits in the mask must be set.
cl_device_fp_config double_mask = (CL_FP_FMA|CL_FP_ROUND_TO_NEAREST|CL_FP_ROUND_TO_ZERO|
CL_FP_ROUND_TO_INF|CL_FP_INF_NAN|CL_FP_DENORM);
cl_device_fp_config double_mask = (CL_FP_FMA|CL_FP_ROUND_TO_NEAREST|
CL_FP_ROUND_TO_ZERO|CL_FP_ROUND_TO_INF|
CL_FP_INF_NAN|CL_FP_DENORM);
cl_device_fp_config double_avail;
CL_SAFE_CALL(clGetDeviceInfo(device_list,CL_DEVICE_DOUBLE_FP_CONFIG,
sizeof(double_avail),&double_avail,nullptr));
@ -684,6 +686,7 @@ void UCL_Device::add_properties(cl_device_id device_list) {
double arch = static_cast<double>(minor)/10+major;
if (arch >= 3.0)
op.has_shuffle_support=true;
op.shared_main_memory=_shared_mem_device(device_list);
}
delete[] buffer2;
#endif