NewUniqueId thread safe

[liujuncheng]

NewUniqueId/UniqueStr 目前被多处使用，应该实现为线程安全的

[github-actions]

CI failed, removing label automerge

[github-actions]

Speed stats:

GPU Name: GeForce GTX 1080 

OneFlow resnet50 time: 127.8ms (= 6390.3ms / 50, input_shape=[16, 3, 224, 224])
PyTorch resnet50 time: 143.1ms (= 7155.7ms / 50, input_shape=[16, 3, 224, 224])
Relative speed: 1.12 (= 143.1ms / 127.8ms)

OneFlow resnet50 time: 74.6ms (= 3730.4ms / 50, input_shape=[8, 3, 224, 224])
PyTorch resnet50 time: 85.6ms (= 4281.6ms / 50, input_shape=[8, 3, 224, 224])
Relative speed: 1.15 (= 85.6ms / 74.6ms)

OneFlow resnet50 time: 49.0ms (= 2448.3ms / 50, input_shape=[4, 3, 224, 224])
PyTorch resnet50 time: 59.8ms (= 2991.5ms / 50, input_shape=[4, 3, 224, 224])
Relative speed: 1.22 (= 59.8ms / 49.0ms)

OneFlow resnet50 time: 41.8ms (= 2090.4ms / 50, input_shape=[2, 3, 224, 224])
PyTorch resnet50 time: 45.3ms (= 2264.1ms / 50, input_shape=[2, 3, 224, 224])
Relative speed: 1.08 (= 45.3ms / 41.8ms)

OneFlow resnet50 time: 35.1ms (= 1752.7ms / 50, input_shape=[1, 3, 224, 224])
PyTorch resnet50 time: 39.5ms (= 1975.3ms / 50, input_shape=[1, 3, 224, 224])
Relative speed: 1.13 (= 39.5ms / 35.1ms)

OneFlow resnet50 time: 147.1ms (= 7355.6ms / 50, input_shape=[16, 3, 224, 224], ddp, world size=2)
PyTorch resnet50 time: 164.0ms (= 8199.6ms / 50, input_shape=[16, 3, 224, 224], ddp, world size=2)
Relative speed: 1.11 (= 164.0ms / 147.1ms)

OneFlow resnet50 time: 94.7ms (= 4734.7ms / 50, input_shape=[8, 3, 224, 224], ddp, world size=2)
PyTorch resnet50 time: 102.6ms (= 5131.6ms / 50, input_shape=[8, 3, 224, 224], ddp, world size=2)
Relative speed: 1.08 (= 102.6ms / 94.7ms)

OneFlow resnet50 time: 66.5ms (= 3324.4ms / 50, input_shape=[4, 3, 224, 224], ddp, world size=2)
PyTorch resnet50 time: 77.4ms (= 3868.3ms / 50, input_shape=[4, 3, 224, 224], ddp, world size=2)
Relative speed: 1.16 (= 77.4ms / 66.5ms)

OneFlow resnet50 time: 63.4ms (= 3170.3ms / 50, input_shape=[2, 3, 224, 224], ddp, world size=2)
PyTorch resnet50 time: 74.7ms (= 3734.7ms / 50, input_shape=[2, 3, 224, 224], ddp, world size=2)
Relative speed: 1.18 (= 74.7ms / 63.4ms)

OneFlow resnet50 time: 65.3ms (= 3262.7ms / 50, input_shape=[1, 3, 224, 224], ddp, world size=2)
PyTorch resnet50 time: 59.6ms (= 2978.4ms / 50, input_shape=[1, 3, 224, 224], ddp, world size=2)
Relative speed: 0.91 (= 59.6ms / 65.3ms)