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Cycles: Add support for P2P memory distribution (e.g. via NVLink)

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This change modifies the multi-device implementation to support memory distribution
across devices, to reduce the overall memory footprint of large scenes and allow scenes to
fit entirely into combined GPU memory that previously had to fall back to host memory.

Reviewed By: brecht

Differential Revision: https://developer.blender.org/D7426
This commit is contained in:
Patrick Mours
2020-06-08 17:16:10 +02:00
parent 0a907657d4
commit 9f7d84b656
11 changed files with 371 additions and 97 deletions
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3
intern/cycles/blender/blender_python.cpp
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@@ -416,10 +416,11 @@ static PyObject *available_devices_func(PyObject * /*self*/, PyObject *args)
for (size_t i = 0; i < devices.size(); i++) {
DeviceInfo &device = devices[i];
string type_name = Device::string_from_type(device.type);
PyObject *device_tuple = PyTuple_New(3);
PyObject *device_tuple = PyTuple_New(4);
PyTuple_SET_ITEM(device_tuple, 0, pyunicode_from_string(device.description.c_str()));
PyTuple_SET_ITEM(device_tuple, 1, pyunicode_from_string(type_name.c_str()));
PyTuple_SET_ITEM(device_tuple, 2, pyunicode_from_string(device.id.c_str()));
PyTuple_SET_ITEM(device_tuple, 3, PyBool_FromLong(device.has_peer_memory));
PyTuple_SET_ITEM(ret, i, device_tuple);
}