Transcript transition-BSahr - NRAO

EVLA Hybrid Array
&
Transition Plan
14-Jun-2004
EVLA Software Design Review
Transition Plan
Bill Sahr 1
Hybrid Array
• The Hybrid Array is the VLA with a mix of VLA
& EVLA hardware and software
–
–
–
–
VLA antennas with EVLA antennas
VLA correlator with prototype WIDAR correlator
VLA correlator with WIDAR correlator subset
VLA correlator with full WIDAR correlator
14-Jun-2004
EVLA Software Design Review
Transition Plan
Bill Sahr 2
Transition Plan
• The Transition Plan is the plan by which
– Control of EVLA hardware is implemented as EVLA
software
– Control of VLA hardware is moved to EVLA-hosted
software
– With no significant periods of downtime on the array
• Hybrid Array operation ends when all VLA
hardware and software has been replaced by
EVLA hardware and software
14-Jun-2004
EVLA Software Design Review
Transition Plan
Bill Sahr 3
Required Functionality
– Control of EVLA antennas
– Control of VLA Correlator
• To do so via EVLA-hosted software requires the new VLA
Correlator Controller
–
–
–
–
–
Control of VLA antennas
Science data archiving in VLA format
Control of prototype WIDAR correlator
Control of WIDAR correlator
Science data archiving in EVLA format
14-Jun-2004
EVLA Software Design Review
Transition Plan
Bill Sahr 4
Ethernet
Operator
Control
Visibility Data,
VLA Archive
Format
Workstations
IPS
disk
IPS
Linux/Wintel (igloo)
Operator
Control
Waveguide
(to/frm antennas)
Shared
Mem
I/O bus
Operator Cntrl Terminal
RS232
Modcomp
(Monty)
DCS
Modcomp
(Boss)
9 trk tape
Visibility Data,
Monitor Data
VLA Archive
Format
VLA Antenna Control
Commands
D
Racks
Serial Line
Controller
Monitor data
Visibility
Data
Archive
Path
Monitor
Data
Archive
Path
Modcomp
(Spectre)
Correlator
Control
Visibility
Data
Correlator
System
Controller
Array
Prcsr
Baseband IFs
Samplers
Delays
Analog
Sum
X
+
File: /users/bsahr/EVLA/architecture_design/hybrid_array/EVLA_antcntrlflow.vsd
Ethernet
EVLA Antennas
VLA Operator Cntrl
IPS
Waveguide to/frm
VLA antennas
Shared
Mem
Modcomp
(Monty)
Modcomp
(Boss)
9 trk tape
Visibility Data,
Monitor Data
VLA Archive
Format
Workstation
Cmnds
Raw antenna data
Monitor data
DTS
Rcvr
Linux/
Wintel
Oracle
(c3po)
Monitor
data,
VLA &
EVLA
CMP
Reconstituted
analog data
D
Racks
RS232
I/O bus
DCS
EVLA
Antenna
Control EVLA
network
...
IPS
Linux/Wintel (igloo)
EVLA Op Cntrl
Linux/
Wintel
(mchost)
D
Racks
disk
Workstations
Cmnds
Monitor Data
EVLA IF
DTS
VLA
Antenna
Control
VLA Cmnds &
Monitor Data
Modcomp
(Spectre)
VLA Cmnds & Monitor Data
Visibility
Data
Serial Line
Controller
Correlator
System
Controller
Array
Prcsr
Baseband IFs
Samplers
Delays
Analog
Sum
X
+
File: /users/bsahr/EVLA/architecture_design/hybrid_array/VLA_correlcntrlr.vsd
Ethernet
EVLA Antennas
VLA Operator Cntrl
IPS
Waveguide to/frm
VLA antennas
disk
IPS
Workstations
Linux/Wintel (igloo)
RS232
Cmnds
Monitor Data
EVLA IF
DTS
EVLA Op Cntrl
Path for EVLA
control of
old Correlator
I/O bus
DCS
Shared
Mem
Modcomp
(Monty)
Modcomp
(Boss)
9 trk tape
Cmnds
Raw antenna data
Monitor data
Workstation
EVLA
network
(Ethernet)
Linux/
Wintel
Oracle
(c3po)
CMP
Linux/
Wintel
(mchost)
DTS
Rcvr
Reconstituted
analog data
Monitor
data,
VLA &
EVLA
Visibility
Data
Correlator
Control
via Modcomp
VLA Cmnds &
Monitor Data
VLA Cmnds & Monitor Data
D
Racks
...
D
Racks
Visibility Data,
Monitor Data
VLA Archive
Format
Serial Line
Controller
Correlator
New
System
Controller
Baseband IFs
Samplers
Delays
Analog
Sum
X
+
New
Array
Prcsr
New Correlator Controller
Boss
(Modcomp)
VLA correlator
integrator
VSB bus
CPU
(Motorola)
Array
Processor
Interface
CPU
Archiving
Telcal
Archive
VME bus
Ethernet
14-Jun-2004
EVLA Software Design Review
Transition Plan
Bill Sahr 8
New Correlator Controller
• Phase I
– Replaces present correlator controller (including the FPS
array processor)
– Provides visibility data to present, Modcomp-based VLA
monitor & control system
– Accepts commands over the Ethernet
• Phase II
– Add a 2nd CPU card to handle archiving & Antsol/Telcal
functionality
– Allows for parallel operation of Modcomp-based VLA
software and Linux/Wintel-based EVLA software
– Can retire the Modcomps without disturbing the EVLA
14-Jun-2004
EVLA Software Design Review
Transition Plan
Bill Sahr 9
File: /users/bsahr/EVLA/architecture_design/hybrid_array/EVLA_archiving.vsd
Cmnds
Monitor Data
EVLA Antennas
Digitized antenna data
Cmnds
Raw antenna data
Monitor data
Waveguide to/frm
VLA antennas
EVLA Op Cntrl
EVLA Patch
Panels &
Switches
Linux/
Wintel
Oracle
(c3po)
Monitor
data,
VLA &
EVLA
Workstation
Cntrl Bldg Ethernet
CMP
Linux/
Wintel
(mchost)
Archiving,
VLA Format,
TelCal
Archive
Data
DTS
Rcvr
VLA Cmnds &
Monitor Data
Reconstituted
analog data
Visibility
Data
D
Racks
...
D
Racks
Serial Line
Controller
Correlator
New
System
Controller
Baseband IFs
Samplers
Delays
Analog
Sum
X
+
New
Array
Prcsr
Storage
Milestones, Near Term
• mid-June 2004
• mid-July 2004
First Fringes on Ant 13 at L band (done)
Routine test observing using Ant 13
(VLA Operators controlling the antenna)
• mid-July 2004 Ant 13 moved into the array, 2 IFs,
Bands L, X, K, & Q usable
• Early Sept 2004 Ant 14, first fringes
• Late Sept 2004 Ant 14 moved into the array
• Late Sept 2004 Ant 16, begin retrofit to EVLA design,
full production electronics
• Q4 2004
Inclusion of EVLA antennas in VLA
observing (on a regular basis)
14-Jun-2004
EVLA Software Design Review
Transition Plan
Bill Sahr 11
Milestones, Mid-term,
Revision
• Q1 2005
• Q1 2005
• Q2 2005
• Q3 2005
• Q4 2005
• End of
Q4 2005
14-Jun-2004
Control of new VLA Correlator Controller by
Modcomp hosted software
WIDAR Correlator PDR (3/29-3/30/2005)
Control of new VLA Correlator Controller by
EVLA-hosted software
Archiving and Telcal functionality added to
new Correlator Controller
Control of VLA antennas by EVLAhosted software
Modcomps retired
EVLA Software Design Review
Transition Plan
Bill Sahr 12
File: /users/bsahr/EVLA/architecture_design/hybrid_array/EVLA_archiving.vsd
Cmnds
Monitor Data
EVLA Antennas
Digitized antenna data
Cmnds
Raw antenna data
Monitor data
Waveguide to/frm
VLA antennas
EVLA Op Cntrl
EVLA Patch
Panels &
Switches
Linux/
Wintel
Oracle
(c3po)
Monitor
data,
VLA &
EVLA
Workstation
Cntrl Bldg Ethernet
CMP
Linux/
Wintel
(mchost)
Archiving,
VLA Format,
TelCal
Archive
Data
DTS
Rcvr
VLA Cmnds &
Monitor Data
Reconstituted
analog data
Visibility
Data
D
Racks
...
D
Racks
Serial Line
Controller
Correlator
New
System
Controller
Baseband IFs
Samplers
Delays
Analog
Sum
X
+
New
Array
Prcsr
Storage
Milestones, Long Term
• Q1-Q2
2006
• Q2 2006
• Q4 2007
• Q4 2007
• Late Q4
2007
14-Jun-2004
Assembly, HW tests, On-Sky tests of
prototype WIDAR correlator at VLA site
WIDAR Correlator CDR (6/19-6/20/2006)
Acceptance of WIDAR Correlator subset
Science data archiving, EVLA format
Start of “shared-risk” observing with
WIDAR Correlator subset
EVLA Software Design Review
Transition Plan
Bill Sahr 14
Milestones, long term
• End of
Q4 2008
• End of
Q4 2008
• Q3 2010
Turnover of full WIDAR Correlator
Earliest possible date to retire the VLA
Correlator
Last VLA antenna retrofitted to the EVLA
design
End of Hybrid Array Operations
• Late Q2
2012
14-Jun-2004
Last EVLA receiver installed
EVLA Software Design Review
Transition Plan
Bill Sahr 15