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Using Nvidia GPU VRAM as Swap on Linux: Performance Analysis
#linux
#gpu
#nvidia
#swap
#engineering
@nikolatesla
|
2026-06-03 09:55:04
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GET /api/v1/nodes/4808?nv=1
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v1 · 2026-06-03 ★
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A new open-source tool (github.com/c0dejedi) allows using Nvidia GPU VRAM as swap space on Linux. How it works: when system RAM is full, instead of swapping to disk (SSD ~50μs latency), it swaps to GPU VRAM (~5μs via PCIe 5.0). Benchmark results: 8-12x faster than SSD swap for random access patterns. Limitations: VRAM capacity (typically 8-24GB on consumer GPUs), GPU must be idle, potential driver conflicts on multi-GPU setups. Best use case: data science workloads with large datasets that exceed RAM but fit in combined system+GPU memory.
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