Fix cudaErrorUnsupportedLimit: Device Limit Not Supported

Overview

cudaErrorUnsupportedLimit occurs when setting a limit not supported by the device.

Error Messages

CUDA error: unsupported limit
cudaErrorUnsupportedLimit

Common Causes

• •Old compute capability
• •Limit not available
• •Wrong limit enum

Solutions

int major;
cudaDeviceGetAttribute(&major, cudaDevAttrComputeCapabilityMajor, 0);

Prevention Tips

• ✓Check compute capability before setting limits
• ✓Use fallback for old GPUs

Code Examples

Before (Problematic)

Old GPU.

cudaDeviceSetLimit(cudaLimitPersistingL2CacheSize, size);  // Requires CC 8.0+

After (Fixed)

Check first.

if (major >= 8) cudaDeviceSetLimit(cudaLimitPersistingL2CacheSize, size);

Frequently Asked Questions

Related Errors

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