import operator_benchmark as op_bench
import benchmark_caffe2 as op_bench_c2
import random
from benchmark_caffe2 import Caffe2BenchmarkBase # noqa
from caffe2.python import core


"""Microbenchmarks for Concat operator. Supports both Caffe2/PyTorch."""

cross_product_configs = {
    'device': ['cpu', 'cuda'],
    'dtype': ['float'],
    'add_axis': [0],
}

# Configs for C2 concat operator
cat_configs_short = op_bench.config_list(
    attr_names=['sizes', 'N', 'axis'],
    attrs=[
        [(1,    1,      1), 2, 0], # noqa
        [(512,  512,    2), 2, 1], # noqa
        [(128, 1024,    2), 2, 1], # noqa
    ],
    cross_product_configs=cross_product_configs,
    tags=['short'],
)

# Configs specific to static runtime feature - a fast runtime for pared down models
cat_configs_static_runtime = op_bench.config_list(
    attr_names=['sizes', 'N', 'axis', 'add_axis'],
    attrs=[
        [(1, 40), 5, 1, 1], # noqa
        [[(1, 160), (1, 14)], -1, 1, 0], # noqa
        [[(1, 20, 40), (1, 4, 40), (1, 5, 40)], -1, 1, 0], # noqa
        [[(1, 580), (1, 174)], -1, 1, 0], # noqa
        [(20, 40), 5, 1, 1], # noqa
        [[(20, 160), (20, 14)], -1, 1, 0], # noqa
        [[(20, 20, 40), (20, 4, 40), (20, 5, 40)], -1, 1, 0], # noqa
        [[(20, 580), (20, 174)], -1, 1, 0], # noqa
    ],
    cross_product_configs=cross_product_configs,
    tags=['static_runtime'],
)

cat_configs_long = op_bench.config_list(
    attr_names=['sizes', 'N', 'axis'],
    attrs=[
        [(2**10,    2**10,      2), 2, 0], # noqa
        [(2**10+1,  2**10-1,    2), 2, 1], # noqa
        [(2**10,    2**10,      2), 2, 2], # noqa

        [[ lambda: random.randint(2**6, 2**7),      2**7-17,    2**6+1], # noqa
            5, 0],
        [[ 2**6+2**5,   lambda: random.randint(2**6, 2**7),     2**6], # noqa
            5, 1],
        [[ 2**7,        2**6,       lambda: random.randint(2**6, 2**7)], # noqa
            5, 2],

        [[lambda: random.randint(2**5, 2**6),       2**5,       2**6], # noqa
            50, 0],
        [[2**5,         lambda: random.randint(2**5, 2**6),     2**6], # noqa
            50, 1],
        [[2**5+1,       2**6+1,         lambda: random.randint(2**5, 2**6)], # noqa
            50, 2],
    ],
    cross_product_configs=cross_product_configs,
    tags=['long'],
)

# There is a different codepath on CUDA for >4 dimensions
cat_configs_multidim = op_bench.config_list(
    attr_names=['sizes', 'N', 'axis', 'dtype'],
    attrs=[
        [(2**6,     2**5,   2**2,   2**4,   2**5), 2, 2], # noqa
        [(2**4,     2**5,   2**2,   2**4,   2**5), 8, 2], # noqa
        [(2**3+1,   2**5-1, 2**2+1, 2**4-1, 2**5+1), 17, 4], # noqa
    ],
    cross_product_configs=cross_product_configs,
    tags=['multidim'],
)

cat_configs_manyinputs = op_bench.config_list(
    attr_names=['sizes', 'N', 'axis'],
    attrs=[
        [[lambda: random.randint(1, 10000)], 100, 0],
        [[lambda: random.randint(1, 1000)], 1000, 0],
        [[lambda: random.randint(1, 500)], 2000, 0],
        [[lambda: random.randint(1, 300)], 3000, 0],
    ],
    cross_product_configs=cross_product_configs,
    tags=['manyinputs'],
)


class ConcatBenchmark(op_bench_c2.Caffe2BenchmarkBase):
    def init(self, sizes, N, axis, add_axis, dtype, device):
        random.seed(42)
        self.inputs = []
        self.args = {'axis': axis, 'add_axis': add_axis}
        gen_sizes = []
        if type(sizes) == list and N == -1:
            gen_sizes = sizes
        else:
            for i in range(N):
                gen_sizes.append([old_size() if callable(old_size) else old_size for old_size in sizes])

        for s in gen_sizes:
            self.inputs.append(self.tensor(s, dtype, device=device))

        self.output = self.tensor(gen_sizes[0], dtype, device=device)
        self.split_info = self.tensor(gen_sizes[0], "int")
        self.set_module_name("concat")

    def forward(self):
        op = core.CreateOperator(
            "Concat", self.inputs, [self.output, self.split_info], **self.args
        )
        return op


op_bench_c2.generate_c2_test(cat_configs_short +
                             cat_configs_long +
                             cat_configs_multidim +
                             cat_configs_manyinputs +
                             cat_configs_static_runtime,
                             ConcatBenchmark)


if __name__ == "__main__":
    op_bench.benchmark_runner.main()
