Update tokenizer, configuration and training reports

reports/run/metrics.jsonl

@@ -1003,3 +1003,5 @@
 {"step": 20060, "tokens": 10517217280, "loss": 2.7343465805053713, "tokens_per_second": 996236.5602341059, "lr": 0.0015, "gradient_norm": 0.1375744342803955, "benchmark": false}
 {"step": 20080, "tokens": 10527703040, "loss": 2.760054588317871, "tokens_per_second": 844460.4750382531, "lr": 0.0015, "gradient_norm": 0.16157233715057373, "benchmark": false}
 {"step": 20100, "tokens": 10538188800, "loss": 2.7180532455444335, "tokens_per_second": 982018.1308888848, "lr": 0.0015, "gradient_norm": 0.14448480308055878, "benchmark": false}
+{"step": 20120, "tokens": 10548674560, "loss": 2.769293212890625, "tokens_per_second": 972250.4932649111, "lr": 0.0015, "gradient_norm": 0.14115169644355774, "benchmark": false}
+{"step": 20140, "tokens": 10559160320, "loss": 2.743351173400879, "tokens_per_second": 975515.970219282, "lr": 0.0015, "gradient_norm": 0.14357905089855194, "benchmark": false}