From: @david-he91
Reviewed-by: @liangchenghui,@linqingke
Signed-off-by: @liangchenghui

From: @yuan_shen_zhou
Reviewed-by: 
Signed-off-by:

From: @tom__chen
Reviewed-by: 
Signed-off-by:

From: @jonwe
Reviewed-by: @robingrosman
Signed-off-by:

From: @jonwe
Reviewed-by: @tom__chen,@robingrosman
Signed-off-by: @robingrosman

fix ci

fix ci

From: @wanyiming
Reviewed-by: @kingxian
Signed-off-by: @kingxian

From: @yuan_shen_zhou
Reviewed-by: @c_34,@liangchenghui
Signed-off-by: @c_34,@liangchenghui

From: @jonwe
Reviewed-by: 
Signed-off-by:

From: @tom__chen
Reviewed-by: 
Signed-off-by:

From: @danishnxt
Reviewed-by: @tom__chen,@robingrosman
Signed-off-by: @robingrosman

From: @jonwe
Reviewed-by: @robingrosman,@robingrosman,@tom__chen
Signed-off-by: @tom__chen

From: @wanyiming
Reviewed-by: 
Signed-off-by:

From: @yuan_shen_zhou
Reviewed-by: @liangchenghui
Signed-off-by: @liangchenghui

From: @yuan_shen_zhou
Reviewed-by: @liangchenghui
Signed-off-by:

Merge pull request !8146 from 34bunny/GPU-ScatterUpdateFix

Merge pull request !8144 from 34bunny/GPU-UniformCandidateSampler

Merge pull request !8141 from 34bunny/GPU-ScatterAdd

Merge pull request !8002 from peixu_ren/custom_gpu

Merge pull request !7950 from linqingke/gpu_ops

Merge pull request !8068 from zhouyuanshen/gathergrad

Merge pull request !8000 from zhouyuanshen/gather

Merge pull request !8054 from 34bunny/GPU-ScatterUpdate

Merge pull request !8006 from danishnxt/SegMax

Merge pull request !8008 from 34bunny/GPU-ScatterAdd

Merge pull request !8003 from JonathanY/repeat_grad