masahi commented on a change in pull request #7626:
URL: https://github.com/apache/tvm/pull/7626#discussion_r591162725
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File path: src/auto_scheduler/search_task.cc
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@@ -106,6 +106,28 @@ HardwareParams
HardwareParamsNode::GetDefaultHardwareParams(const Target& target
auto target_device = target->GetAttr<String>("device", "");
LOG(FATAL) << "No default hardware parameters for opencl target device:
" << target_device;
}
+ } else if (device_type == kDLVulkan) {
+ auto ctx = TVMContext{static_cast<DLDeviceType>(device_type), 0};
+ auto device_name = "device_api.vulkan";
+ auto func = tvm::runtime::Registry::Get(device_name);
+ ICHECK(func != nullptr) << "Cannot find Vulkan device_api in registry";
+ auto device_api =
static_cast<tvm::runtime::DeviceAPI*>(((*func)()).operator void*());
+
+ tvm::runtime::TVMRetValue ret;
+ device_api->GetAttr(ctx,
tvm::runtime::DeviceAttrKind::kMaxSharedMemoryPerBlock, &ret);
+ int max_shared_memory_per_block = ret;
+
+ int max_local_memory_per_block = INT32_MAX;
+
+ device_api->GetAttr(ctx,
tvm::runtime::DeviceAttrKind::kMaxThreadsPerBlock, &ret);
+ int max_threads_per_block = ret;
+
+ device_api->GetAttr(ctx, tvm::runtime::DeviceAttrKind::kWarpSize, &ret);
+ int warp_size = ret;
+
+ int max_vthread_extent = warp_size / 4;
Review comment:
A good catch, indeed the spec only requires warp size to be greater than
or equal to 1. In practice it is always greater than 1, but I'll update this to
`int max_vthread_extent = std::max(1, warp_size / 4)`.
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