[Hexagon] Create test examples to show parallelization (apache#12654)

* [Hexagon] Create test examples to show parallelization working on Hexagon workloads.

* Increase max size of tvm_rpc_android buffer size.

* Reformat tests to be parameterized.

* Comment out tests to speedup CI.

tests/python/contrib/test_hexagon/test_parallel_hvx.py

@@ -0,0 +1,230 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+"""
+Test parallelizing HVX workloads and compare them to single thread examples. 
+"""
+import numpy as np
+import tvm
+
+from tvm.script import tir as T
+from numpy.random import default_rng
+
+TEST_OUTPUT_TEMPLATE = "Test {} with {} operations... \n    -Single Thread: {} ms \n    -Parallel: {} ms\n    -Speedup: {}x\n"
+
+
+def get_vrmpy_shape_dtypes(operations):
+    return ((operations, 128), "uint8", (operations, 128), "uint8", (operations, 32), "int32")
+
+
+def get_vmpy_vadd_shape_dtype(operations):
+    return ((operations, 128), "uint8", (operations, 128), "uint8", (operations, 128), "int16")
+
+
+def vmpy_expected_producer(shape, a, b):
+    expected = np.zeros(shape, dtype="int16")
+    for n in range(shape[0]):
+        for i in range(0, 128, 2):
+            expected[n, i // 2] = np.int16(a[n, i]) * np.int16(b[n, i])
+        for i in range(1, 128, 2):
+            expected[n, i // 2 + 64] = np.int16(a[n, i]) * np.int16(b[n, i])
+    return expected
+
+
+def vadd_expected_producer(shape, a, b):
+    expected = np.zeros(shape, dtype="int16")
+    for n in range(shape[0]):
+        for i in range(0, 128, 2):
+            expected[n, i // 2] = np.int16(a[n, i]) + np.int16(b[n, i])
+        for i in range(1, 128, 2):
+            expected[n, i // 2 + 64] = np.int16(a[n, i]) + np.int16(b[n, i])
+    return expected
+
+
+def vrmpy_expected_producer(shape, a, b):
+    expected = np.zeros(shape, dtype="int32")
+    for n in range(shape[0]):
+        for i in range(32):
+            for r in range(4):
+                expected[n, i] = expected[n, i] + np.uint32(a[n, i * 4 + r]) * np.uint32(
+                    b[n, i * 4 + r]
+                )
+    return expected
+
+
+def get_vmpy_operator(operations):
+    @T.prim_func
+    def operator(a: T.handle, b: T.handle, c: T.handle) -> None:
+        T.func_attr({"global_symbol": "main", "tir.noalias": True})
+        A = T.match_buffer(a, [operations, 128], dtype="uint8")
+        B = T.match_buffer(b, [operations, 128], dtype="uint8")
+        C = T.match_buffer(c, [operations, 128], dtype="int16")
+        for n in T.grid(operations):
+            with T.block("C"):
+                vn = T.axis.remap("S", [n])
+                C[vn, T.ramp(0, 1, 128)] = T.call_llvm_intrin(
+                    T.llvm_lookup_intrinsic_id("llvm.hexagon.V6.vmpybusv.128B"),
+                    T.uint32(2),
+                    T.reinterpret(A[vn, T.ramp(0, 1, 128)], dtype="int32x32"),
+                    T.reinterpret(B[vn, T.ramp(0, 1, 128)], dtype="int32x32"),
+                    dtype="int16x128",
+                )
+
+    return operator
+
+
+def get_vadd_operator(operations):
+    @T.prim_func
+    def operator(a: T.handle, b: T.handle, c: T.handle) -> None:
+        T.func_attr({"global_symbol": "main", "tir.noalias": True})
+        A = T.match_buffer(a, [operations, 128], dtype="uint8")
+        B = T.match_buffer(b, [operations, 128], dtype="uint8")
+        C = T.match_buffer(c, [operations, 128], dtype="int16")
+        for n in T.grid(operations):
+            with T.block("C"):
+                vn = T.axis.remap("S", [n])
+                C[vn, T.ramp(0, 1, 128)] = T.call_llvm_intrin(
+                    T.llvm_lookup_intrinsic_id("llvm.hexagon.V6.vaddubh.128B"),
+                    T.uint32(2),
+                    T.reinterpret(A[vn, T.ramp(0, 1, 128)], dtype="int32x32"),
+                    T.reinterpret(B[vn, T.ramp(0, 1, 128)], dtype="int32x32"),
+                    dtype="int16x128",
+                )
+
+    return operator
+
+
+def get_vrmpy_operator(operations):
+    @T.prim_func
+    def operator(a: T.handle, b: T.handle, c: T.handle) -> None:
+        T.func_attr({"global_symbol": "main", "tir.noalias": True})
+        A = T.match_buffer(a, [operations, 128], dtype="uint8")
+        B = T.match_buffer(b, [operations, 128], dtype="uint8")
+        C = T.match_buffer(c, [operations, 32], dtype="int32")
+        for n in T.grid(operations):
+            with T.block("C"):
+                vn = T.axis.remap("S", [n])
+                C[vn, T.ramp(0, 1, 32)] = T.call_llvm_intrin(
+                    T.llvm_lookup_intrinsic_id("llvm.hexagon.V6.vrmpyubv.128B"),
+                    T.uint32(2),
+                    T.reinterpret(A[vn, T.ramp(0, 1, 128)], dtype="int32x32"),
+                    T.reinterpret(B[vn, T.ramp(0, 1, 128)], dtype="int32x32"),
+                    dtype="int32x32",
+                )
+
+    return operator
+
+
+def evaluate(hexagon_session, shape_dtypes, expected_output_producer, sch):
+    a_shape, a_dtype, b_shape, b_dtype, c_shape, c_dtype = shape_dtypes
+
+    target_hexagon = tvm.target.hexagon("v68")
+    func_tir = tvm.build(
+        sch.mod["main"], target=tvm.target.Target(target_hexagon, host=target_hexagon)
+    )
+    module = hexagon_session.load_module(func_tir)
+
+    rng = default_rng()
+    a = rng.integers(0, 16, a_shape, dtype=a_dtype)
+    b = rng.integers(0, 16, b_shape, dtype=b_dtype)
+    c = np.zeros(c_shape, dtype=c_dtype)
+
+    a_hexagon = tvm.runtime.ndarray.array(a, device=hexagon_session.device)
+    b_hexagon = tvm.runtime.ndarray.array(b, device=hexagon_session.device)
+    c_hexagon = tvm.runtime.ndarray.array(c, device=hexagon_session.device)
+
+    # These are reduced for CI but number=100 and repeat=10 does a good job of removing noise.
+    number = 1
+    repeat = 1
+
+    timer = module.time_evaluator(
+        "__tvm_main__", hexagon_session.device, number=number, repeat=repeat
+    )
+    runtime = timer(a_hexagon, b_hexagon, c_hexagon)
+    tvm.testing.assert_allclose(c_hexagon.asnumpy(), expected_output_producer(c_shape, a, b))
+
+    return round(runtime.mean * 1000, 6)
+
+
+class TestMatMulVec:
+
+    (
+        operation_name,
+        operator_producer,
+        shape_dtypes_producer,
+        expected_output_producer,
+    ) = tvm.testing.parameters(
+        ("vrmpy", get_vrmpy_operator, get_vrmpy_shape_dtypes, vrmpy_expected_producer),
+        ("vmpy", get_vmpy_operator, get_vmpy_vadd_shape_dtype, vmpy_expected_producer),
+        ("vadd", get_vadd_operator, get_vmpy_vadd_shape_dtype, vadd_expected_producer),
+    )
+
+    # Experimentally best split factor but all multiples of 4 perform pretty well.
+    # This is because there are 4 HVX untis available on the device and pipelining
+    # works best with parallels of the number of available HVX.
+    split_factor = tvm.testing.parameter(4)
+
+    # Removed most of these to speedup CI.
+    operation_count = tvm.testing.parameter(
+        128,
+        # 256,
+        # 512,
+        # 1024,  # Single thread runs faster since L2 cache can handle the entire request quickly
+        # 2048,
+        # 4096,  # Significant performance degredation once the inputs and outputs cannot all fit in L2
+        # 8192,
+        # 16384,
+    )
+
+    @tvm.testing.requires_hexagon
+    def test(
+        self,
+        hexagon_session,
+        operation_count,
+        operation_name,
+        operator_producer,
+        shape_dtypes_producer,
+        expected_output_producer,
+        split_factor,
+    ):
+
+        sch = tvm.tir.Schedule(operator_producer(operation_count))
+        single_thread_runtime = evaluate(
+            hexagon_session, shape_dtypes_producer(operation_count), expected_output_producer, sch
+        )
+
+        sch = tvm.tir.Schedule(operator_producer(operation_count))
+        block = sch.get_block("C")
+        b = sch.get_loops(block)
+        bo, _ = sch.split(b[0], factors=[split_factor, None])
+        sch.parallel(bo)
+
+        parallel_runtime = evaluate(
+            hexagon_session, shape_dtypes_producer(operation_count), expected_output_producer, sch
+        )
+
+        speedup = round(single_thread_runtime / parallel_runtime, 2)
+
+        print(
+            TEST_OUTPUT_TEMPLATE.format(
+                operation_name, operation_count, single_thread_runtime, parallel_runtime, speedup
+            )
+        )
+
+
+if __name__ == "__main__":
+    tvm.testing.main()

tests/python/contrib/test_hexagon/test_parallel_scalar.py

@@ -0,0 +1,159 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+""" Test parallelism for multiple different scalar workloads. """
+
+import numpy as np
+import tvm
+
+from tvm.script import tir as T
+from numpy.random import default_rng
+
+TEST_OUTPUT_TEMPLATE = "Test {} with {} operations... \n    -Single Thread: {} ms \n    -Parallel: {} ms\n    -Speedup: {}x\n"
+
+
+def get_add_operator(operations):
+    @T.prim_func
+    def operator(a: T.handle, b: T.handle, c: T.handle) -> None:
+        T.func_attr({"global_symbol": "main", "tir.noalias": True})
+        A = T.match_buffer(a, [operations], dtype="float64")
+        B = T.match_buffer(b, [operations], dtype="float64")
+        C = T.match_buffer(c, [operations], dtype="float64")
+        for n in T.grid(operations):
+            with T.block("C"):
+                vn = T.axis.remap("S", [n])
+                C[vn] = A[vn] + B[vn]
+
+    return operator
+
+
+def get_multiply_operator(operations):
+    @T.prim_func
+    def operator(a: T.handle, b: T.handle, c: T.handle) -> None:
+        T.func_attr({"global_symbol": "main", "tir.noalias": True})
+        A = T.match_buffer(a, [operations], dtype="float64")
+        B = T.match_buffer(b, [operations], dtype="float64")
+        C = T.match_buffer(c, [operations], dtype="float64")
+        for n in T.grid(operations):
+            with T.block("C"):
+                vn = T.axis.remap("S", [n])
+                C[vn] = A[vn] * B[vn]
+
+    return operator
+
+
+def get_sub_operator(operations):
+    @T.prim_func
+    def operator(a: T.handle, b: T.handle, c: T.handle) -> None:
+        T.func_attr({"global_symbol": "main", "tir.noalias": True})
+        A = T.match_buffer(a, [operations], dtype="float64")
+        B = T.match_buffer(b, [operations], dtype="float64")
+        C = T.match_buffer(c, [operations], dtype="float64")
+        for n in T.grid(operations):
+            with T.block("C"):
+                vn = T.axis.remap("S", [n])
+                C[vn] = A[vn] - B[vn]
+
+    return operator
+
+
+def evaluate(hexagon_session, operations, expected, sch):
+    shape = operations
+    dtype = "float64"
+
+    target_hexagon = tvm.target.hexagon("v68")
+    func_tir = tvm.build(
+        sch.mod["main"], target=tvm.target.Target(target_hexagon, host=target_hexagon)
+    )
+    module = hexagon_session.load_module(func_tir)
+
+    rng = default_rng()
+    a = rng.random(shape, dtype=dtype)
+    b = rng.random(shape, dtype=dtype)
+    c = np.zeros(shape, dtype=dtype)
+
+    a_hexagon = tvm.runtime.ndarray.array(a, device=hexagon_session.device)
+    b_hexagon = tvm.runtime.ndarray.array(b, device=hexagon_session.device)
+    c_hexagon = tvm.runtime.ndarray.array(c, device=hexagon_session.device)
+
+    # These are reduced for CI but number=100 and repeat=10 does a good job of removing noise.
+    number = 1
+    repeat = 1
+
+    timer = module.time_evaluator(
+        "__tvm_main__", hexagon_session.device, number=number, repeat=repeat
+    )
+    runtime = timer(a_hexagon, b_hexagon, c_hexagon)
+
+    tvm.testing.assert_allclose(c_hexagon.asnumpy(), expected(a, b))
+
+    return round(runtime.mean * 1000, 6)
+
+
+class TestMatMulVec:
+
+    (operation_name, operator_producer, expected_output_producer,) = tvm.testing.parameters(
+        ("add", get_add_operator, (lambda a, b: a + b)),
+        ("mul", get_multiply_operator, (lambda a, b: a * b)),
+        ("sub", get_sub_operator, (lambda a, b: a - b)),
+    )
+
+    # Removed most of these to speedup CI.
+    operations = tvm.testing.parameter(
+        128,
+        # 256,
+        # 512,
+        # 1024,  # Single thread runs faster since L2 cache can handle the entire request quickly
+        # 2048,
+        # 4096,  # Significant performance degredation once the inputs and outputs cannot all fit in L2
+        # 8192,
+        # 16384,
+    )
+
+    split_factor = tvm.testing.parameter(4)
+
+    @tvm.testing.requires_hexagon
+    def test_add(
+        self,
+        hexagon_session,
+        operation_name,
+        operator_producer,
+        expected_output_producer,
+        operations,
+        split_factor,
+    ):
+
+        sch = tvm.tir.Schedule(operator_producer(operations))
+        single_thread_runtime = evaluate(hexagon_session, operations, expected_output_producer, sch)
+
+        sch = tvm.tir.Schedule(operator_producer(operations))
+        block = sch.get_block("C")
+        b = sch.get_loops(block)
+        bo, _ = sch.split(b[0], factors=[split_factor, None])
+        sch.parallel(bo)
+        parallel_runtime = evaluate(hexagon_session, operations, expected_output_producer, sch)
+
+        speedup = round(single_thread_runtime / parallel_runtime, 2)
+        print(
+            TEST_OUTPUT_TEMPLATE.format(
+                operation_name, operations, single_thread_runtime, parallel_runtime, speedup
+            )
+        )
+
+
+if __name__ == "__main__":
+    tvm.testing.main()