As we get back to commissioning, we are again actively changing IPCs in front-end models.  This can cause the number actually in use to vary from those in the static lists, that only get pruned manually or when re-building all models. At present, we are limited to 512 IPCs per type (Shared memory, PCIe, RFM-X, RFM-Y).  I updated a script 'find_used_ipc_channels.py' started by Joe Betzwieser to go over all the in-use models (using the rtsystab file) and list all the IPCs in use in files.

After running it at LLO (see aLOG 38202 ). I have run this for H1 today with the following:

 Found 197 SHMEM IPCs - list in ipc_shmem_channels.txt
 Found 414 PCIE IPCs - list in ipc_pcie_channels.txt
 Found 31 RFM0 IPCs - list in ipc_rfm0_channels.txt
 Found 31 RFM1 IPCs - list in ipc_rfm1_channels.txt

I have attached the channel lists.  These are somewhat lower that LLO usage.