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gpt-oss-20 OOMs on 8 B200s using default config

bugSomething isn't workingSomething isn't working

community-request

Status: Open.

#2157 In NVIDIA-NeMo/RL;

· jiosephlee opened on Mar 26, 2026

How to make it training faster using GDPO

bugSomething isn't workingSomething isn't working

community-request

needs-follow-upIssue needs follow-upIssue needs follow-up

Status: Open.

#2153 In NVIDIA-NeMo/RL;

· firmmm opened on Mar 25, 2026

Flash-attention-3

Status: Open.

#2148 In NVIDIA-NeMo/RL;

· terrykong opened on Mar 25, 2026

Add sm_103 (Grace Blackwell) arch support to sglang dependency configuration

Status: Open.

#2144 In NVIDIA-NeMo/RL;

· terrykong opened on Mar 23, 2026

b300 container

enhancementNew feature or requestNew feature or request

Status: Open.

#2143 In NVIDIA-NeMo/RL;

· cmunley1 opened on Mar 23, 2026

Add Trackio as a New Backend for Experiment Visualization

community-request

enhancementNew feature or requestNew feature or request

needs-follow-upIssue needs follow-upIssue needs follow-up

Status: Open.

#2142 In NVIDIA-NeMo/RL;

· ParagEkbote opened on Mar 23, 2026

NCCL timeout when reproducing Qwen3-235B performance test

bugSomething isn't workingSomething isn't working

community-request

Status: Open.

#2140 In NVIDIA-NeMo/RL;

· jp7c5 opened on Mar 23, 2026

Nano v3 dpo failed with cpu-offload after transformer v5 bump.

bugSomething isn't workingSomething isn't working

Status: Open.

#2130 In NVIDIA-NeMo/RL;

· yuki-97 opened on Mar 20, 2026

Nemorl vs Megatron: fwd/bwd slowdown (1.1–1.3x) and additional overhead from Nemorl runtime components

bugSomething isn't workingSomething isn't working

Status: Open.

#2129 In NVIDIA-NeMo/RL;

· RayenTian opened on Mar 20, 2026

Many layers missing when converting GPTOSS Megatron checkpoint to HF format

bugSomething isn't workingSomething isn't working

community-request

Status: Open.

#2124 In NVIDIA-NeMo/RL;

· dhineshkumar-r opened on Mar 18, 2026

Training dataload fails when using preserving dataset

bugSomething isn't workingSomething isn't working

community-request

Status: Open.

#2116 In NVIDIA-NeMo/RL;

· dhineshkumar-r opened on Mar 16, 2026

GPT-OSS SFT OOM when setting up JIT fusion

bugSomething isn't workingSomething isn't working

community-request

Status: Open.

#2115 In NVIDIA-NeMo/RL;

· dhineshkumar-r opened on Mar 16, 2026