[Feature] Add `--show-dir` option behavior on multi-gpu testing

[mikigom]

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This modification is for multi-gpu testing to support behavior of --show-dir option.

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2 out of 3 committers have signed the CLA.

:white_check_mark: Junjun2016
:white_check_mark: mikigom
:x: root

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[codecov[bot]]

Codecov Report

Merging #583 (82f735a) into master (ee66167) will decrease coverage by 0.26%. The diff coverage is 0.00%.

:exclamation: Current head 82f735a differs from pull request most recent head e8cbe7c. Consider uploading reports for the commit e8cbe7c to get more accurate results

@@            Coverage Diff             @@
##           master     #583      +/-   ##
==========================================
- Coverage   85.37%   85.10%   -0.27%     
==========================================
  Files         107      107              
  Lines        5847     5829      -18     
  Branches      960      954       -6     
==========================================
- Hits         4992     4961      -31     
- Misses        673      685      +12     
- Partials      182      183       +1     

Flag	Coverage Δ
unittests	85.09% <0.00%> (-0.27%)	:arrow_down:

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
mmseg/apis/test.py	26.43% <0.00%> (-4.23%)	:arrow_down:
mmseg/models/backbones/hrnet.py	82.45% <0.00%> (-0.88%)	:arrow_down:
mmseg/datasets/pipelines/transforms.py	97.12% <0.00%> (-0.87%)	:arrow_down:
mmseg/models/builder.py	91.30% <0.00%> (-0.70%)	:arrow_down:
mmseg/models/necks/fpn.py	53.94% <0.00%> (-0.60%)	:arrow_down:
mmseg/models/backbones/unet.py	94.87% <0.00%> (-0.05%)	:arrow_down:
mmseg/models/backbones/vit.py	84.84% <0.00%> (ø)
mmseg/models/backbones/swin.py	86.89% <0.00%> (ø)
mmseg/models/backbones/resnet.py	99.28% <0.00%> (ø)
mmseg/models/necks/multilevel_neck.py	100.00% <0.00%> (ø)
... and 2 more

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[xvjiarui]

Hi @mikigom Thanks for the nice feature. Could you please fix the lint error to pass the CI?

[mikigom]

Hi @mikigom Thanks for the nice feature. Could you please fix the lint error to pass the CI?

I fixed the lint error as you said :)

[Junjun2016]

Hi @mikigom Sorry for the late reply. Could you please fix the lint error again?

[Junjun2016]

Hi @mikigom We will test and review it ASAP!

[Junjun2016]

Hi @mikigom It is better to checkout a new branch for PR instead of the master. I have created a PR to your folked mmsegmentation repo.

[Junjun2016]

Hi @mikigom Could you please fix the conflicts?

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