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Flavored Data

Develop a system for clients to reserve hardware for specific applications to manage requests efficiently. Implement event-based monitoring and data demultiplexing. Future work includes array support for the system.

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Flavored Data

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  1. Flavored Data Bob Dalesio

  2. Statement of the Problem • One set of instrumentation • Multiple uses of the instrumentation • H-, H+, different pulse lengths • Description comes through on timing system • Clients are only interested in their “flavor”

  3. Alternatives • Create hardware that clients are able to reserve hardware for their application (LANSCE, SLS) • Hardware is only used by one client at a time • Timing system needs to manage requests • Wait for channel access protocol change • Each client could describe the condition for receiving data • This may not be ready by December • Make a record for each flavor • For SNS 8 flavors make push diagnostics performance • Expands the number of records required • Device support would handle flavor through event scan • Make Record Support to demux data to clients • Timing system events now have no knowledge of client interest • Record can dynamically change monitor condition

  4. Monitor DeMux Record • Reads an input value from a scalar field (like BPM X Pos) • Reads a trigger value from a record (like event number) • Has some number of expressions for the trigger value • EXPA Trig > 0 • EXPB Trig == 1 • EXPC Trig == 2 • Has some number of client channel values • A • B • C

  5. Monitor DeMux Record – cont. • Channel access client connects to <recordname>.A if it is interested in the BPM X position whenever the event from the timing system is not 0 • Another channel access client connects to <recordname>.B if it is interested in the BPM X position whenever the event from the timing system is 1 • Etc…….

  6. Future Work • Implement this same function for arrays • Have channel access protocol support this

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