When using Bohrium, model_devi's "group_ size" is restricted

[Saberve]

When I set the value of model_devi's group_size to 40 or 50,dpgen will report an error.

But when I set this value to 20, dpgen will work normally, but it will waste a lot of time compressing and uploading files as a result.

It seems that the data space given by the data type of this field in the database is too small

[njzjz]

Hi @KZHIWEI @ACoderHIT please take a look.