How to Train a LoRA Locally for Stable Diffusion with AMD GPU 2025
Complete guide to training Stable Diffusion LoRAs on AMD GPUs using ROCm 6.2+ in 2025. Step-by-step setup with Kohya, Derrian, and troubleshooting tips.
 You have an AMD GPU like the RX 7900 XTX or RX 6800 XT and want to train custom LoRAs for Stable Diffusion, but most guides assume NVIDIA hardware with CUDA support. Training on AMD GPUs is absolutely possible in 2025 thanks to ROCm improvements, but the setup process differs significantly from NVIDIA workflows and outdated guides cause frustration.
Quick Answer: Training Stable Diffusion LoRAs on AMD GPUs in 2025 requires ROCm 6.2 or newer, Python 3.10, and PyTorch built for ROCm. Use Kohya's sd-scripts or Derrian's LoRA Easy Training Scripts with specific AMD configurations. Key differences from NVIDIA include using ROCm instead of CUDA, setting HSA_OVERRIDE_GFX_VERSION environment variable for your specific GPU, avoiding xformers which doesn't exist for AMD, and using fp16 or bf16 precision. Training works reliably on RX 6000 and 7000 series cards with 12GB+ VRAM.
- ROCm 6.2+ required with PyTorch built specifically for ROCm 6.3
 - Python 3.10 recommended for compatibility with current training scripts
 - HSA_OVERRIDE_GFX_VERSION environment variable critical for proper GPU recognition
 - Training works on RX 6800 XT (16GB), RX 6900 XT (16GB), RX 7900 XT (20GB), RX 7900 XTX (24GB)
 - Expect slightly longer training times compared to equivalent NVIDIA cards
 
What Do You Need for AMD GPU LoRA Training?
Training Stable Diffusion LoRAs on AMD hardware requires specific software components and compatible hardware. Understanding these prerequisites prevents frustrating setup failures and helps you determine if your system can handle training.
Hardware requirements center on VRAM capacity and GPU architecture. For Stable Diffusion 1.5 LoRA training, 12GB VRAM represents a practical minimum. Cards with 16GB or more provide comfortable headroom for larger batch sizes and caching optimizations. The RX 6800 XT with 16GB works well, while the RX 7900 XTX with 24GB handles training effortlessly.
GPU architecture matters because ROCm support varies across AMD card generations. The RX 6000 series (RDNA 2) and RX 7000 series (RDNA 3) have solid ROCm support in 2025. Older cards like RX 5700 XT may work but face more compatibility challenges and limited optimization. Professional cards like the Radeon Pro W6800 also work well with ROCm.
Operating system compatibility strongly favors Linux, specifically Ubuntu. ROCm's primary development and testing targets Ubuntu LTS releases, with Ubuntu 22.04 and 24.04 providing the most reliable experience. Windows support for ROCm exists but remains significantly less mature with more compatibility issues. For serious LoRA training on AMD, Linux is strongly recommended.
ROCm version requirements have evolved rapidly. As of 2025, ROCm 6.2 represents the minimum practical version, with ROCm 6.3 offering better performance and compatibility. Older ROCm versions lack critical features or have bugs that prevent reliable training. Many outdated guides reference ROCm 5.x which no longer works with current PyTorch and training scripts.
Python version specificity matters more than users expect. Python 3.10 provides the best compatibility with current training scripts and ROCm-enabled PyTorch. Python 3.11 and 3.12 have some compatibility issues with certain dependencies. Python 3.9 works but is aging out of support. Stick with 3.10 for smoothest setup.
- AMD GPU with 12GB+ VRAM (RX 6800 XT minimum, RX 7900 XTX recommended)
 - Ubuntu 22.04 or 24.04 LTS (other distros possible but harder)
 - ROCm 6.2+ installed and verified working with rocm-smi command
 - Python 3.10 with pip and venv support
 - 100GB+ free storage for models, datasets, and training outputs
 
Storage requirements accumulate quickly. The Stable Diffusion 1.5 base model takes about 4-7GB. Your training dataset depends on image count and resolution but typically ranges from 100MB to several GB. Training outputs including intermediate checkpoints can reach 5-10GB. Cache files speed up subsequent training runs but consume additional space. Budget 100GB minimum for comfortable training workflows.
RAM (system memory) matters less than GPU VRAM but still has requirements. 16GB system RAM handles most training scenarios adequately. 32GB provides more headroom for data processing and prevents potential bottlenecks. Aggressive caching configurations can push RAM usage higher.
Cooling and power considerations affect sustained training performance. LoRA training pushes GPUs to high utilization for hours. Ensure your cooling solution can handle extended loads without thermal throttling. Power supply capacity should comfortably exceed your GPU's rated TDP plus system components.
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How Do You Install ROCm and Set Up Your Environment?
ROCm installation forms the foundation for AMD GPU training workflows. Getting this step right prevents cascading issues later, while mistakes here create frustrating debugging sessions.
ROCm installation begins with AMD's official installation guide for your specific Ubuntu version. Following the official guide ensures your system has ROCm installed and configured correctly with proper kernel modules, libraries, and tools. The installation typically involves adding AMD's repository, updating package lists, and installing the rocm-dkms and rocm-libs packages.
Verification after installation prevents proceeding with a broken setup. Run rocm-smi to check that ROCm detects your GPU correctly. The output should show your GPU model, temperature, memory usage, and utilization. If rocm-smi fails or doesn't list your GPU, ROCm installation needs troubleshooting before continuing.
The HSA_OVERRIDE_GFX_VERSION environment variable requires careful configuration for many AMD GPUs. This variable tells ROCm which GPU architecture to target when your actual GPU isn't explicitly recognized. For RX 7900 XTX and other RDNA 3 cards, use export HSA_OVERRIDE_GFX_VERSION=11.0.0. For RX 6000 series RDNA 2 cards, use export HSA_OVERRIDE_GFX_VERSION=10.3.0. Add this export to your .bashrc or .profile to persist across sessions.
Python environment setup uses virtual environments to isolate training dependencies from system Python. Create a dedicated venv for LoRA training to prevent version conflicts. Use Python 3.10 specifically by installing python3.10 and python3.10-venv packages if not already available.
PyTorch installation requires the ROCm-specific build rather than generic CPU or CUDA versions. The critical command installs PyTorch from the ROCm wheels repository. After creating and activating your venv, uninstall any existing PyTorch to avoid conflicts, then install the ROCm 6.3 version. Use pip3 install torch torchvision torchaudio --index-url https://download.pytorch.org/whl/rocm6.3.
TensorFlow for ROCm provides additional functionality for some training scripts. Install with pip install tensorflow-rocm==2.17.0 -f https://repo.radeon.com/rocm/manylinux/rocm-rel-6.3/. This step is optional but recommended for full compatibility with all training features.
Testing PyTorch and ROCm integration verifies your setup before attempting training. Create a small Python script that imports torch, checks torch.cuda.is_available() (which returns True for ROCm), and prints torch.cuda.get_device_name(0) to confirm GPU detection. For AMD GPUs, CUDA functions map to ROCm equivalents through PyTorch's abstraction layer.
Common installation issues include missing kernel modules, incorrect environment variables, and PyTorch version mismatches. If torch.cuda.is_available() returns False, check that ROCm kernel modules loaded with lsmod | grep amdgpu and lsmod | grep rock. Verify the HSA_OVERRIDE_GFX_VERSION matches your GPU architecture. Ensure PyTorch came from the ROCm wheels repository rather than default pip index.
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How Do You Choose Between Kohya and Derrian for AMD Training?
Two primary training frameworks dominate the Stable Diffusion LoRA landscape with AMD GPU support. Understanding their differences helps you choose the right tool for your needs and skill level.
Kohya's sd-scripts represent the underlying training framework that many other tools build upon. Using sd-scripts directly gives you maximum control and flexibility through command-line configuration. The scripts support extensive customization of learning rates, network architectures, data augmentation, and optimization strategies. However, this flexibility comes with complexity. You configure training through long command-line arguments or JSON config files with dozens of parameters.
Derrian's LoRA Easy Training Scripts wrap Kohya's sd-scripts with a user-friendly GUI interface. Derrian provides visual forms for configuring training parameters, simplifying dataset management, and monitoring training progress. For users coming from graphical tools or uncomfortable with command-line workflows, Derrian dramatically lowers the barrier to entry. The trade-off involves less exposure to underlying mechanisms and occasional abstraction leaks.
- Prefer command-line workflows and direct configuration control
 - Want to script or automate training processes
 - Need bleeding-edge features immediately as they're released
 - Are comfortable troubleshooting through GitHub issues and documentation
 - Value minimal abstraction between you and the training process
 
- Prefer graphical interfaces for configuration
 - Are new to LoRA training and want guided workflows
 - Value convenience over absolute control
 - Want integrated dataset management and organization
 - Appreciate visual progress monitoring during training
 
Installation procedures differ between the two approaches. Kohya sd-scripts install by cloning the GitHub repository and installing requirements from requirements.txt. Derrian's scripts require cloning the dev branch specifically with git clone -b dev https://github.com/derrian-distro/LoRA_Easy_Training_Scripts.git because the dev branch contains latest AMD compatibility updates.
Python version requirements align for both tools, with Python 3.10 providing best compatibility. Both frameworks work with the same ROCm and PyTorch versions, so your environment setup remains consistent regardless of which you choose.
Community support dynamics differ subtly. Kohya's sd-scripts have the largest user base and most extensive GitHub issue discussions. Solutions to problems often exist in closed issues or community forums. Derrian's community is smaller but more focused on GUI users, with some unique solutions for interface-specific challenges.
Update frequency and feature velocity favor direct Kohya usage. New features, optimizations, and model support appear in sd-scripts first. Derrian updates follow after integration work to expose new capabilities through the GUI. If you need to use newly released techniques immediately, direct sd-scripts access provides faster access.
Both tools work reliably on AMD GPUs with proper setup. The choice primarily affects user experience rather than training outcomes. Both can achieve identical results given equivalent configurations.
What Are the Step-by-Step Instructions for Kohya Setup?
Setting up Kohya's sd-scripts for AMD GPU training involves several sequential steps. Following this procedure creates a working training environment.
Start by cloning the Kohya sd-scripts repository. Navigate to your preferred directory and run git clone https://github.com/kohya-ss/sd-scripts.git. This creates a new sd-scripts directory containing all necessary code.
Create a Python 3.10 virtual environment within the sd-scripts directory. Run python3.10 -m venv venv to initialize the environment. This isolates training dependencies from your system Python installation.
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Activate the virtual environment with source venv/bin/activate. Your terminal prompt should change to indicate the active venv. All subsequent pip commands will install packages into this isolated environment.
Upgrade pip and wheel to latest versions with pip install --upgrade pip wheel. This ensures compatibility with modern Python packaging standards and prevents potential dependency resolution issues.
Install base requirements from the repository's requirements file. Run pip install -r requirements.txt to install dependencies that sd-scripts needs for training. This includes libraries for data processing, model manipulation, and various utilities.
Uninstall any existing PyTorch installation to prevent version conflicts. Run pip uninstall torch torchvision torchaudio and confirm removal. This step is critical because generic PyTorch builds won't work with AMD GPUs.
Install ROCm-specific PyTorch builds. Execute pip3 install torch torchvision torchaudio --index-url https://download.pytorch.org/whl/rocm6.3. This downloads and installs PyTorch built specifically for ROCm 6.3, which properly interfaces with AMD GPUs.
Install TensorFlow for ROCm with pip install tensorflow-rocm==2.17.0 -f https://repo.radeon.com/rocm/manylinux/rocm-rel-6.3/. Some training features leverage TensorFlow, and this version builds against ROCm.
Configure Accelerate for single-machine training. Run accelerate config and answer the prompts. Select single machine, no distributed training, no Deepspeed, no CPU offload, all GPUs (or select your specific GPU), and fp16 mixed precision. These settings configure Accelerate's training acceleration framework for your AMD GPU.
Install ONNX Runtime for ROCm with pip3 install onnxruntime-rocm -f https://repo.radeon.com/rocm/manylinux/rocm-rel-6.3.2. This enables ONNX model support which some features require.
Create organizational directories for training workflows. Run mkdir log reg train output models to establish folders for logs, regularization images, training images, output LoRAs, and base models respectively. Organized directory structure prevents confusion during training.
Fix the tokenizer path issue that affects SDXL training. Edit ./sd-scripts/library/sdxl_train_util.py and change both TOKENIZER1_PATH and TOKENIZER2_PATH to "openai/clip-vit-large-patch14". The script cannot reliably locate the default "laion/CLIP-ViT-bigG-14-laion2B-39B-b160k" tokenizer, causing training failures.
Verify installation by testing PyTorch GPU detection. Create a Python script or run interactive Python with the venv activated. Import torch, check torch.cuda.is_available() returns True, and verify torch.cuda.get_device_name(0) shows your AMD GPU.
Your environment is now ready for LoRA training. The next steps involve preparing datasets and configuring training parameters.
How Do You Prepare Your Dataset for Training?
Dataset preparation significantly impacts training outcomes. Proper organization, captioning, and configuration determine whether your LoRA learns effectively or produces poor results.
Image collection forms the foundation. Gather 10-50 high-quality images of your training subject. More images generally improve results, but quality matters more than quantity. Images should be clear, well-lit, and show your subject from various angles and contexts. For Stable Diffusion 1.5, resolution of 512x512 works well, though the training process can handle various sizes through bucketing.
Image organization uses a specific folder structure that Kohya's scripts understand. Create folders within your training directory named with the pattern {repeat_count}_{trigger_word}. For example, 10_charactername trains on images in that folder 10 times per epoch using "charactername" as the trigger word. The repeat count controls how much emphasis the model places on those images.
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- train/10_mycharacter/ - Contains 20 images, trains 200 times per epoch
 - train/5_mystyle/ - Contains 30 images, trains 150 times per epoch
 - reg/1_person/ - Contains 50 regularization images, trains 50 times per epoch
 
Image captioning provides context that helps the model understand what it's learning. You can use filename-based captions by creating .txt files with the same name as each image. For example, image1.jpg has corresponding image1.txt containing the caption. Captions should describe the image content, including the trigger word, actions, settings, and relevant details.
Regularization images prevent overfitting by providing generic examples of your subject's class. If training a character LoRA, use regularization images of generic people. If training a style LoRA, use images in various other styles. Place these in a separate folder like 1_person (for character LoRAs) or 1_art (for style LoRAs). The low repeat count balances learning your specific subject against maintaining general knowledge.
Image preprocessing involves resizing and aspect ratio considerations. Kohya's bucketing feature automatically groups images by aspect ratio and scales them to the target resolution. This preserves compositions rather than forcing square crops. You can leave images at various sizes and let bucketing handle organization.
Trigger word selection should be unique and unlikely to conflict with existing concepts. Avoid common words or names. Made-up words, combinations, or specific identifiers work well. The trigger word activates your LoRA during inference, so choose something memorable and easy to type.
Dataset size considerations balance thoroughness and training time. Very small datasets (under 10 images) risk overfitting where the model memorizes rather than generalizes. Extremely large datasets (over 100 images) extend training time and may introduce noise if images vary too widely. For most subjects, 15-30 carefully selected images provide good results.
Caption quality matters more than elaborate detail. Simple accurate descriptions outperform lengthy flowery prose. Include the trigger word, main subject description, any relevant style or quality tags, and notable composition elements. Avoid irrelevant details or speculation about what's happening in the image.
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What Training Parameters Work Best for AMD GPUs?
Training configuration determines both whether training succeeds technically and whether results meet your quality expectations. AMD-specific considerations affect some parameter choices.
Batch size must fit within your GPU's VRAM. For AMD cards with 12-16GB, batch size 1 is safest. Cards with 20-24GB can try batch size 2. Larger batches improve training efficiency but consume more memory. Start with 1 and increase only if you have headroom after monitoring VRAM usage during initial training.
Mixed precision dramatically reduces memory usage and improves speed. Use fp16 or bf16 depending on your GPU's capabilities. AMD RDNA 2 and 3 architectures support both. Specify via --mixed_precision="fp16" in your training command. Avoid fp32 (full precision) unless you have specific quality issues, as it doubles memory requirements and slows training.
Learning rate affects how quickly the model adapts and whether training converges. For LoRA training, 1e-4 (0.0001) provides a good starting point. Lower rates like 5e-5 train more conservatively, useful if you're getting artifacts. Higher rates like 2e-4 train faster but risk instability. Learning rate schedulers like cosine or constant help manage rate changes during training.
- Batch size: 1 (12-16GB VRAM) or 2 (20-24GB VRAM)
 - Mixed precision: fp16 or bf16
 - Learning rate: 1e-4 with cosine scheduler
 - Network dimension: 64 (LoRA rank)
 - Network alpha: 32 (half of dimension)
 - Optimizer: AdamW (more predictable than Adafactor)
 - Max epochs: 10-30 depending on dataset size
 - Resolution: 512x512 for SD 1.5
 
Network dimension (LoRA rank) controls the capacity of your LoRA adaptation. Higher ranks can learn more complex features but increase file size and risk overfitting. Common values range from 32 to 128. For most purposes, 64 provides good balance. Start here and adjust based on results.
Network alpha works with dimension to control learning strength. A common approach sets alpha to half the dimension value. For dimension 64, use alpha 32. This ratio works well across various training scenarios. Some experiments suggest alpha equal to dimension, but half-dimension is more conservative.
Optimizer choice affects training dynamics and memory usage. AdamW provides predictable behavior and reliable convergence. Adafactor uses less memory and has adaptive learning rates, but the adaptive nature makes results less predictable. For AMD GPUs where VRAM might be tight, Adafactor saves memory. For ample VRAM, AdamW offers more control.
Max epochs determines how many complete passes through your dataset occur during training. More epochs mean more learning but risk overfitting if excessive. For datasets of 15-30 images with reasonable repeat counts, 10-30 epochs typically suffice. Monitor sample images during training to catch when quality peaks before overfitting begins.
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Resolution for SD 1.5 models centers on 512x512. The model trained at this resolution, so LoRA training aligns best when matching. You can train at higher resolutions like 640x640 or 768x768, which allows the LoRA to work better at those sizes during inference. Higher resolutions consume more VRAM and increase training time.
Caching strategies dramatically improve training speed and reduce VRAM usage. Enable latent caching with --cache_latents to precompute and store image encodings. For very tight VRAM, add --cache_latents_to_disk to use storage rather than VRAM for cache. Similarly, --cache_text_encoder_outputs and --cache_text_encoder_outputs_to_disk cache text embeddings. These optimizations provide substantial speedups for subsequent epochs.
The persistent data loader workers flag improves efficiency with --persistent_data_loader_workers. This keeps data loading processes alive between epochs rather than recreating them, reducing overhead.
VAE precision requires special handling. Add --no_half_vae to prevent issues with half-precision VAE encoding. Some VAE implementations have numerical instabilities in fp16, and this flag ensures full precision for VAE operations while maintaining mixed precision elsewhere.
How Do You Start Training and Monitor Progress?
Launching training and tracking its progress ensures you catch issues early and stop at optimal quality before overfitting.
The training command brings together all your preparation into one execution. A typical command for SD 1.5 LoRA training on AMD might look like this. Make sure your virtual environment is activated and you're in the sd-scripts directory. The command specifies your pretrained model path, training data location, output directory, and all the parameters we discussed.
An example minimal command might be: accelerate launch --mixed_precision="fp16" train_network.py --pretrained_model_name_or_path="/path/to/sd-v1-5.safetensors" --train_data_dir="./train" --output_dir="./output" --output_name="myLoRA" --network_module="networks.lora" --network_dim=64 --network_alpha=32 --learning_rate=1e-4 --max_train_epochs=20 --save_every_n_epochs=2 --train_batch_size=1 --cache_latents --mixed_precision="fp16" --optimizer_type="AdamW" --xformers=False.
Note the --xformers=False flag. AMD doesn't have xformers support, so explicitly disabling prevents errors. Many guides for NVIDIA setups enable xformers, but this option doesn't exist for ROCm.
Monitor training output in the terminal. The script prints progress including current epoch, step number, loss values, and estimated time remaining. Loss generally decreases during training. If loss increases or fluctuates wildly, something may be wrong with your configuration.
Sample image generation during training provides visual feedback on learning progress. Configure sample generation with --sample_every_n_epochs=2 and --sample_prompts="./sample_prompts.txt". Create sample_prompts.txt with prompts you want to test using your trigger word. The script generates these samples periodically, letting you see how the LoRA evolves.
VRAM monitoring helps ensure you're not hitting limits. Watch rocm-smi in another terminal to see memory usage. If usage approaches your card's maximum, the system might slow or crash. Reduce batch size, enable more aggressive caching, or lower resolution if needed.
Training time varies based on hardware, dataset size, and configuration. On an RX 7900 XTX, expect 1-3 hours for a typical 20-epoch training run with 20 images. Smaller datasets and fewer epochs train faster. Larger datasets, higher resolutions, or more epochs extend training time proportionally.
Intermediate checkpoints save at intervals specified by --save_every_n_epochs. This creates LoRA files every N epochs, letting you compare different training stages. Sometimes earlier checkpoints work better than the final one if overfitting occurs late in training.
Early stopping based on visual quality prevents wasted training and overfitting. Review sample images as they generate. When quality peaks and subsequent epochs show no improvement or degradation, stop training manually with Ctrl+C. The last saved checkpoint before quality declined becomes your final LoRA.
Log files record detailed training metrics for later analysis. The --logging_dir="./log" flag specifies where logs save. These include loss graphs, learning rate schedules, and parameter snapshots. Tools like TensorBoard can visualize these logs for deeper analysis.
Common training failures include out-of-memory errors, missing files, and configuration mismatches. OOM errors require reducing batch size or enabling more caching. Missing file errors often involve incorrect paths to models or datasets. Configuration mismatches might involve incompatible parameter combinations that the script rejects.
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Frequently Asked Questions
What AMD GPUs can successfully train LoRAs in 2025?
RX 6000 series cards with 16GB+ like RX 6800 XT and RX 6900 XT work reliably. RX 7000 series cards including RX 7900 XT (20GB) and RX 7900 XTX (24GB) provide excellent performance. Cards with 12GB like RX 6700 XT can train SD 1.5 LoRAs with careful configuration but struggle with SDXL. Professional cards like Radeon Pro W6800 also work well. Older RX 5000 series has limited support and compatibility challenges.
Why does my AMD GPU show as CUDA in PyTorch?
PyTorch uses CUDA API calls as an abstraction layer even when running on AMD hardware through ROCm. When you check torch.cuda.is_available() on AMD GPUs, it returns True because ROCm implements CUDA compatibility. This is expected behavior. The actual execution happens on AMD hardware through ROCm's HIP runtime, but PyTorch code references CUDA functions that get transparently translated.
How much slower is AMD compared to NVIDIA for LoRA training?
AMD training typically takes 20-40% longer than equivalent NVIDIA cards for the same workload. An RX 7900 XTX performs similarly to RTX 4080 in training time, while an RX 6800 XT compares to RTX 3080. The gap has narrowed significantly with ROCm 6.x improvements. Some operations show near-parity, while others remain slower. For most users, the time difference (hours instead of minutes, not days instead of hours) is acceptable given hardware cost considerations.
Do I need to do anything special for SD 1.5 versus SDXL training?
The core setup remains identical. SDXL requires more VRAM (16GB minimum recommended, 24GB comfortable) and trains slower. You must use the tokenizer fix mentioned for SDXL by changing tokenizer paths in sdxl_train_util.py. Training resolution increases to 1024x1024 for SDXL. Otherwise, the same Kohya or Derrian workflows apply. Adjust VRAM-related settings like batch size based on your available memory.
Can I train on Windows with AMD GPUs?
Windows ROCm support exists but remains significantly less mature than Linux. You'll encounter more compatibility issues, missing features, and potential stability problems. For serious LoRA training, Linux (Ubuntu specifically) is strongly recommended. If you must use Windows, consider WSL2 (Windows Subsystem for Linux) which provides a Linux environment on Windows and improves ROCm compatibility compared to native Windows.
What if I get out-of-memory errors during training?
Reduce batch size to 1 if not already. Enable all caching options with disk storage: --cache_latents --cache_latents_to_disk --cache_text_encoder_outputs --cache_text_encoder_outputs_to_disk. Lower training resolution if possible. Reduce network dimension from 64 to 32. Close other GPU-using applications. If still failing, your GPU may lack sufficient VRAM for your configuration. Consider reducing dataset size or image resolution.
How do I know if my LoRA is overfitting?
Monitor sample images during training. Overfitting shows as generated images that only reproduce training examples exactly rather than generalizing to new prompts. Loss may continue decreasing while visual quality plateaus or degrades. Generated images become rigid and unable to handle variations in prompts. Review samples from multiple epochs and compare. The epoch with best generalization, usually before the very end, produces your optimal LoRA.
Why isn't xformers working on my AMD GPU?
Xformers is an NVIDIA-specific optimization library that doesn't exist for AMD GPUs. ROCm doesn't provide xformers equivalents. Always disable xformers in training configurations for AMD with --xformers=False. Any guide mentioning xformers is written for NVIDIA hardware. The absence of xformers slightly impacts memory efficiency and speed but doesn't prevent successful training.
Can I mix AMD GPU training with NVIDIA GPU inference?
Yes absolutely. LoRA files are platform-independent model adaptations. Train on AMD hardware, then use the resulting .safetensors LoRA file with any SD 1.5 setup including NVIDIA GPUs, AMD GPUs, or even CPU inference. The LoRA format is standard across all implementations. You can share LoRAs trained on AMD with users running any hardware.
What should HSA_OVERRIDE_GFX_VERSION be set to for my GPU?
For RX 7900 XTX, RX 7900 XT, and other RDNA 3 cards, use export HSA_OVERRIDE_GFX_VERSION=11.0.0. For RX 6800 XT, RX 6900 XT, and other RDNA 2 cards, use export HSA_OVERRIDE_GFX_VERSION=10.3.0. Add this export command to your .bashrc or .profile file so it persists across terminal sessions. This variable tells ROCm which GPU architecture instruction set to use, ensuring compatibility with your specific hardware.
Successfully Training LoRAs on AMD Hardware
Training Stable Diffusion LoRAs on AMD GPUs has become practical and reliable in 2025 thanks to ROCm maturation and community refinement of training workflows. The setup differs from NVIDIA processes in specific ways, but results match quality once you understand AMD-specific requirements.
The keys to success involve using current software versions (ROCm 6.2+, PyTorch for ROCm 6.3, Python 3.10), properly configuring your environment with HSA_OVERRIDE_GFX_VERSION, and adapting training parameters for AMD hardware characteristics like avoiding xformers and managing VRAM through caching.
Training times run 20-40% longer than equivalent NVIDIA hardware, but for most users this translates to hours versus minutes rather than prohibitive delays. The ability to use AMD hardware for LoRA training opens possibilities for users with Radeon cards or those seeking alternatives to NVIDIA's market dominance.
Dataset quality, appropriate training parameters, and monitoring for overfitting matter more than hardware choice. An excellent dataset and well-tuned configuration on AMD hardware produces better results than poor data and configuration on the fastest NVIDIA card.
For users wanting AI image generation without training custom LoRAs, platforms like Apatero.com provide access to professionally trained models through optimized interfaces, eliminating setup and training complexity entirely.
As ROCm continues improving and AMD's presence in the AI compute space grows, expect training workflows to become even smoother with better performance parity to NVIDIA solutions. The foundations established in 2025 position AMD GPUs as viable training platforms for the Stable Diffusion ecosystem.
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