1. Ease the elegant exiting procedure by providing a singleton access pattern. Now the exiting procedure can easily call the exit_non_block method to notify the executors to start exiting worker processes. If the worker processes not exit after a timeout, the mindinsight stop still can kill these processes.

2. Build a framework for managing computing resources used by different businesses. Different businesses can now call the get_executor() API to get their process pool to execute compute heavy tasks outside the mindinsight guinicorn worker process, which will make the restful api respond more quickly.

From: @jiang-shuqiang
Reviewed-by: @wenkai_dist,@lilongfei15
Signed-off-by: @lilongfei15

fix that UI cannot get the error when tensor is too large and skip

From: @liangyongxiong1024
Reviewed-by: @ouwenchang,@ouwenchang
Signed-off-by:

add info when crc check failed.

1. add cli entry
2. add more validation for hyper config
3. add validator for config dict
4. add st for optimizer config validator
5. add custom lineage for hyper config

Merge pull request !601 from LiHongzhang/fix_caching

1. add functions for calculating target buckets and params importances
2. add restful api for target buckets, importances and metadata

If the env or gunicorn has some error, there will not be any error in console
or error log file when we set the subprocss stdout to devnull.
So I set it to None it will inhert its parent process stdout.
When gunicorn cause error, it will show error in console.

fix npu timeout mechanism

sum not used and not available to others

add new field of success

Main features:

1. Use the ComputingResourceManager to manage all computing workers.
2. Ensure fair worker number between summary directories at first. So every summary directories in cache will be loaded simultaneously.
3. When a summary directory is loaded, it's worker will be released, and other unfinished summary directories can use the released workers to speed up. This way we solved the slow worker problem.

Code changes:

1. Added computing_resource_mgr.py
2. Passed ComputingResourceManager instances instead of workers_count
3. Simplified the _load_single_fine() function a bit.

Merge pull request !346 from liangyongxiong/disable-argparse-allow-abbrev

Use the AST replaces the importlib/inspect modules to analyze and modify network definition script.
The importlib/inspect must load python script to analyze, but AST analysis is static code analysis and is very secure.

Merge pull request !44 from liangyongxiong/master