Fix cudaErrorContextIsDestroyed: Context No Longer Valid

Overview

cudaErrorContextIsDestroyed occurs when using a CUDA context that has been destroyed.

Error Messages

CUDA error: context is destroyed
cudaErrorContextIsDestroyed

Common Causes

• •Using CUDA after cudaDeviceReset
• •Context destroyed by another thread
• •Driver reset

Solutions

cudaDeviceReset();
// Must reinitialize all CUDA resources
cudaSetDevice(0);

Prevention Tips

• ✓Track context lifecycle
• ✓Coordinate resets across threads

Code Examples

Before (Problematic)

Reset destroys context.

cudaDeviceReset();
cudaMemcpy(...);  // Context gone!

After (Fixed)

Reinitialize after reset.

cudaDeviceReset();
cudaSetDevice(0);  // Reinit
cudaMemcpy(...);

Frequently Asked Questions

Related Errors

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