def gda_construction_raw(mesh_shape, mesh_axes, state):
# `device_put` time is not measured in this benchmark. All the devices here
# are local.
global_mesh = jtu.create_global_mesh(mesh_shape, ("x", "y"))
global_input_shape = (2048, 2048)
global_input_data = np.arange(
prod(global_input_shape)).reshape(global_input_shape)
global_indices = gda.get_shard_indices(global_input_shape, global_mesh,
mesh_axes)
dbs = [
jax.device_put(global_input_data[global_indices[device]], device)
for device in global_mesh.local_devices
]
while state:
gda.GlobalDeviceArray(global_input_shape, global_mesh, mesh_axes, dbs)
async def create_async_gsda_from_callback(
global_shape: gda.Shape,
global_mesh: Mesh,
mesh_axes: gda.MeshAxes,
data_callback: Callable[[gda.Index], asyncio.Future],
):
indices = gda.get_shard_indices(global_shape, global_mesh, mesh_axes)
future_arrays = [
data_callback(indices[d]) for d in global_mesh.local_devices
]
# Pause here and come back to `from_async_callback()` when future_arrays are
# ready. device_put cannot happen with future_arrays.
local_arrays = await asyncio.gather(*future_arrays)
dbs = [
jax.device_put(array, device)
for array, device in zip(local_arrays, global_mesh.local_devices)
]
return gda.GlobalDeviceArray(global_shape, global_mesh, mesh_axes, dbs)
async def create_async_gda_from_callback(
global_shape: gda.Shape,
global_mesh: Mesh,
mesh_axes: gda.MeshAxes,
data_callback: Callable[[gda.Index], asyncio.Future],
):
global_idx_rid = gda.get_shard_indices_replica_ids(
global_shape, global_mesh, mesh_axes)
local_devices = global_mesh.local_devices
future_arrays = [data_callback(global_idx_rid[d][0])
for d in local_devices]
# Pause here and come back to `from_async_callback()` when future_arrays are
# ready. device_put cannot happen with future_arrays.
local_arrays = await asyncio.gather(*future_arrays)
dbs = [jax.device_put(array, device)
for array, device in zip(local_arrays, local_devices)]
return gda.GlobalDeviceArray(global_shape, global_mesh, mesh_axes, dbs,
gda._GdaFastPathArgs(global_idx_rid, local_devices))
def _gda(global_shape, pspec, dbs):
return gda_lib.GlobalDeviceArray(global_shape.shape, global_mesh,
pspec, dbs)