[nvidia target] Startup delay on certain platforms when host-device memory migration is used

[1tnguyen]

On some platforms, when host-device migration is used on the nvidia target (via setting CUDAQ_MAX_CPU_MEMORY_GB), the simulation startup time is delay.

This can be checked by enabling CUDAQ logging, export CUDAQ_LOG_LEVEL=info.

The simulation is stalled after a Create zero initial state line, e.g.,

[2024-11-21 05:55:05.391] [info] [CircuitSimulator.h:913] Allocating 34 new qubits.
[2024-11-21 05:55:05.391] [info] [CusvsimCircuitSimulatorSingleProcess.h:38] [CusvsimSingleProcessCircuitSimulator] Create zero initial state of 34 qubits.

It will eventually finish.

This seems to only occur on certain (platform + driver version) combination.