How many named pipes is too many?

Questions and discussions about the Xillybus IP core and drivers

How many named pipes is too many?

Postby Guest » Tue May 01, 2018 3:14 pm

So I'm working on the design for a Xilinx FPGA + Xillybus system that might have 24 channels requiring 48 named pipes, one for each direction of the main data. I need command-and-control (C&C) as well. I could have an ADDITIONAL set of 48 named pipes, one for each direction of the C&C. But this brings my total number of name pipes, as well as total number of FIFOs on the FPGA, to a whopping 96. Alternatively, I could put all my C&C onto a single pair of named pipes, or I could take a partial position and put the C&C onto three pairs of named pipes (because those 24 channels are of three different types). These alternatives reduce my total number of named pipes and FPGA FIFOs by about a factor of two, but they increase complexity as multiple linux threads might be needing to independently exercise C&C and, with the C&C being over a shared channel, sharing and collision complications arise.

What are your thoughts about which way to go?
Guest
 

Re: How many named pipes is too many?

Postby support » Tue May 01, 2018 3:27 pm

Hello,

There is no problem with 96 streams. Do what's more convenient for you.

It's however a bit daunting (albeit possible) to set them up manually at the IP core factory. If you like, you may set up one stream of each sort on a custom IP core, and contact support by email for having them duplicated. Mention the core ID number and which streams you want to duplicate and in what way.

Regards,
Eli
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Posts: 590
Joined: Tue Apr 24, 2012 3:46 pm

Re: How many named pipes is too many?

Postby Guest » Tue May 01, 2018 11:57 pm

Thanks very much.
Guest
 


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