add mstrain+2x

Author: xieenze

README.md

@@ -33,15 +33,18 @@ Trained models can be download in [Google Drive](https://drive.google.com/drive/
 
 | Backbone  | Style   | GN  | MS train | Lr schd |  GPUs | Inf time (fps) | mask AP 
 |:---------:|:-------:|:----:|:-------:|:-------:|:-----:|:--------------:|:------:|
-| R-50      | caffe   | Y    | N       | 1x      |  4    | 8.9/23.9           | 28.9   |
+| R-50      | caffe   | Y    | N       | 1x      |  4    | 8.9/23.9       | 28.9   |
 | R-101     | caffe   | Y    | N       | 1x      |  4    | -              | 30.7   | 
-| X-101     | caffe   | Y    | N       | 1x      |  4    | -              | 32.5   | 
+| X-101     | pytorch   | Y  | N       | 1x      |  4    | -              | 32.5   | 
 
-| Backbone  | Style   | GN  | MS train | Lr schd |  GPUs | Inf time (fps) | mask AP |
-|:---------:|:-------:|:----:|:-------:|:-------:|:-----:|:--------------:|:------: |
-| R-50      | caffe   | Y    | N       | 1x      |  32    | 8.9/23.9           | 29.1   | 
-| R-101     | caffe   | Y    | N       | 1x      |  32    | -              | 30.4   |
-| X-101     | caffe   | Y    | N       | 1x      |  32    | -              | 32.6   | 
+| Backbone  | Style   | GN  | MS train | Lr schd |  GPUs | Inf time (fps) | mask AP|
+|:---------:|:-------:|:----:|:-------:|:-------:|:-----:|:--------------:|:------:|
+| R-50      | caffe   | Y    | N       | 1x      |  32    | 8.9/23.9      | 29.1   | 
+| R-101     | caffe   | Y    | N       | 1x      |  32    | -             | 30.4   |
+| X-101     | pytorch | Y    | N       | 1x      |  32    | -             | 32.6   | 
+| R-50      | caffe   | Y    | Y       | 2x      |  32    | 8.9/23.9      | 30.5   | 
+| R-101     | caffe   | Y    | Y       | 2x      |  32    | -             | 31.9   |
+| X-101     | pytorch | Y    | Y       | 2x      |  32    | -             | 33.5   | 
 
 **Notes:**
 - The X-101 backbone is X-101-64x4d.