whats the specific scenario? are you running and using both buckets in the same run? each run different bucket?

each run in a different bucket

Hi TenseOstrich47 ,

Try using aws credentials with region too https://github.com/allegroai/clearml/blob/master/docs/clearml.conf#L88

credentials: [ specifies key/secret credentials to use when handling s3 urls (read or write) { bucket: "my-bucket-name" key: "my-access-key" secret: "my-secret-key" region: "my-region" },

great, thanks! will give that a go

So how do I ensure that artefacts are uploaded in the correct bucket from within clearml?

TenseOstrich47 the artifacts are uploaded to the bucket according to the output_uri you provide, ClearML will not automatically upload to any bucket just because the configuration contains credentials for it