---
name: REGRESSION
about: Report a regression in speed or accuracy due to a Megatron-LM update
title: "[REGRESSION]"
labels: ''
assignees: ''

---

**Describe the regression**
A clear and concise description of what the regression is.

**To Reproduce**
Steps to reproduce the behavior. The easier it is to reproduce the faster it will get maintainer attention.

**Previous performance**
What speed or accuracy did you previously see.

**New performance**
What speed or accuracy do you see after the update.

**Stack trace/logs**
If applicable, add the stack trace or logs related to the regression.

**Environment (please complete the following information):**
 - Previous Megatron-LM commit ID
 - New Megatron-LM commit ID
 - Previous PyTorch version
 - New PyTorch version
 - Previous CUDA version
 - New CUDA version
 - Previous NCCL version
 - New NCCL version

**Proposed fix**
If you have a proposal for how to fix the issue state it here or link to a PR.

**Additional context**
Add any other context about the problem here.