| # mc4 | |
| ## Megatron pre-processed files | |
| These are the megatron-ready mc4 files: | |
| - 1.3TB: `$six_ALL_CCFRWORK/datasets-custom/mc4/mc4_preprocessing` | |
| Should something get corrupted there is a backup: | |
| - 1.3TB: `$six_ALL_CCFRSTORE/datasets-custom/mc4/mc4_preprocessing` | |
| If files need to re-pre-processed, the original jsonl files are at: | |
| - 186GB: `$six_ALL_CCFRSTORE/datasets-custom/mc4/mc4_sampled_raw` | |
| ## How pre-processing was done | |
| The pre-processing was done outside of JZ, and was downloaded from: | |
| * [mc4_preprocessing](https://console.cloud.google.com/storage/browser/bigscience/mc4_preprocessing?pageState=(%22StorageObjectListTable%22:(%22f%22:%22%255B%255D%22))) | |
| * [mc4_sampled_raw](https://console.cloud.google.com/storage/browser/bigscience/mc4_sampled_raw?pageState=(%22StorageObjectListTable%22:(%22f%22:%22%255B%255D%22))) | |
| To download one needs to activate the already installed on JZ [google-cloud-sdk](../../jz/tools/google-cloud-sdk.md) and then use `gsutil` as instructed at the `Download` tab in the links above. | |