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[WIP] Stateful Destructive Device Slicing#2726

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add more placer tests; not working yet, I don't think
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@hunhoffe
hunhoffe committedNov 21, 2025
commitefaa90505d34548a4b3fe02571bf1e315cea26fc
82 changes: 82 additions & 0 deletionstest/python/placer_tests.py
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Original file line numberDiff line numberDiff line change
Expand Up@@ -292,3 +292,85 @@ def core_fn(of):

module = Program(dev_slice, rt).resolve_program(SequentialPlacer())
return module


# CHECK-LABEL: TEST: not_enough_columns
# CHECK: Ran out of compute tiles for placement!
@construct_and_print_module
def not_enough_columns(module):
n = 1024
dev = NPU2()
dev_slice = dev[:, 0:1]

n_ty = np.ndarray[(n,), np.dtype[np.int32]]

of_0 = ObjectFifo(n_ty, name="of0")
of_1 = ObjectFifo(n_ty, name="of1")
of_2 = ObjectFifo(n_ty, name="iof2")
of_3 = ObjectFifo(n_ty, name="iof3")

def core_fn(of):
pass

workers = [
Worker(core_fn, [of_0.cons()]),
Worker(core_fn, [of_1.cons()]),
Worker(core_fn, [of_2.cons()]),
Worker(core_fn, [of_3.cons()]),
]

rt = Runtime()
with rt.sequence(n_ty, n_ty, n_ty, n_ty) as (A, B, C, D):
rt.start(*workers)
rt.fill(of_0.prod(), A)
rt.fill(of_1.prod(), B)
rt.fill(of_2.prod(), C)
rt.fill(of_3.prod(), D)

try:
Program(dev_slice, rt).resolve_program(SequentialPlacer())
except ValueError as e:
print(e)
return module


# CHECK-LABEL: TEST: multiple_slices
# CHECK-LABEL: success!
@construct_and_print_module
def multiple_slices(module):
n = 1024
dev = NPU2()
slice_0 = dev[:, 0:1]
slice_1 = dev[:, 2:3]

n_ty = np.ndarray[(n,), np.dtype[np.int32]]

of_0 = ObjectFifo(n_ty, name="of0")
of_1 = ObjectFifo(n_ty, name="of1")

def core_fn(of):
pass

worker_0 = Worker(core_fn, [of_0.cons()])
worker_1 = Worker(core_fn, [of_1.cons()])

rt_0 = Runtime()
with rt_0.sequence(n_ty) as (A):
rt_0.start(worker_0)
rt_0.fill(of_0.prod(), A)

rt_1 = Runtime()
with rt_1.sequence(n_ty) as (B):
rt_1.start(worker_1)
rt_1.fill(of_1.prod(), B)

Program(slice_0, rt_0).resolve_program(SequentialPlacer())
Program(slice_1, rt_1).resolve_program(SequentialPlacer())

assert worker_0.tile.col == 0
assert worker_1.tile.col == 2
assert worker_0.tile != worker_1.tile
assert of_0.prod().tile.col == 0
assert of_1.prod().tile.col == 2
print("success!")
return module
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