Fix cudaErrorMpsServerNotReady: MPS Server Initializing

Overview

cudaErrorMpsServerNotReady indicates the MPS server is starting but not yet ready to accept connections.

Error Messages

CUDA error: MPS server not ready
cudaErrorMpsServerNotReady

Common Causes

• •Application started too fast after MPS
• •MPS still initializing
• •Heavy system load

Solutions

while ! echo get_server_list | nvidia-cuda-mps-control 2>/dev/null; do
    sleep 1
done

Prevention Tips

• ✓Add delay after starting MPS
• ✓Check status before running applications

Code Examples

Before (Problematic)

No wait for ready.

nvidia-cuda-mps-control -d && ./app  // Too fast

After (Fixed)

Wait for initialization.

nvidia-cuda-mps-control -d
sleep 2
./app

Frequently Asked Questions

Related Errors

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