14-jun-2004evla software design review transition plan bill sahr 1 evla hybrid array &...
TRANSCRIPT
14-Jun-2004 EVLA Software Design ReviewTransition Plan
Bill Sahr 1
EVLA Hybrid Array
&
Transition Plan
14-Jun-2004 EVLA Software Design ReviewTransition Plan
Bill Sahr 2
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 ReviewTransition Plan
Bill Sahr 3
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• Hybrid Array operation ends when all VLA hardware and software has been replaced by EVLA hardware and software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 ReviewTransition Plan
Bill Sahr 4
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
DCS
Serial LineController
Modcomp(Spectre)
Samplers Delays X +
SystemController
DRacks
ArrayPrcsr
AnalogSum
Baseband IFs
Correlator
Modcomp(Monty)
SharedMem
Modcomp(Boss)
VisibilityData
Monitor data
Commands
Waveguide(to/frm antennas)
9 trk tape
Workstations
Operator Cntrl TerminalRS232
I/O bus
IPS IPSdisk
Ethernet
VisibilityData
ArchivePath
VLA Antenna Control
OperatorControl
OperatorControl
MonitorData
ArchivePath
CorrelatorControl
Visibility Data,Monitor DataVLA Archive
Format
Linux/Wintel (igloo)
Visibility Data,VLA Archive
Format
DCS
File: /users/bsahr/EVLA/architecture_design/hybrid_array/EVLA_antcntrlflow.vsd
Serial LineController
Modcomp(Spectre)
Samplers Delays X +
SystemController
DRacks
ArrayPrcsr
AnalogSum
Baseband IFs
Correlator
Modcomp(Monty)
SharedMem
Modcomp(Boss)
VisibilityData
Waveguide to/frmVLA antennas
9 trk tape
Visibility Data,Monitor DataVLA Archive
Format
Workstations
I/O bus
IPS IPSdisk
Ethernet
VLA Operator Cntrl
CMP
VLA Cmnds & Monitor Data
VLA Cmnds &Monitor Data
RS
2 32
Linux/Wintel
(mchost)
Linux/WintelOracle(c3po)
EVLAnetwork
Monitordata,
VLA &EVLA
Raw
ant
enna
dat
aM
onito
r da
ta
Cm
nds
EVLA Antennas
DRacks
DTSRcvr
Cm
nd
sM
on
ito
r D
ata
EVLA IFDTS
Reconstitutedanalog data
Workstation
Linux/Wintel (igloo)
EVLA Op Cntrl
. . .
EVLAAntennaControl
VLAAntennaControl
DCS
File: /users/bsahr/EVLA/architecture_design/hybrid_array/VLA_correlcntrlr.vsd
Serial LineController
Samplers Delays X +
DRacks
AnalogSum
Baseband IFs
Correlator
Modcomp(Monty)
SharedMem
Modcomp(Boss)
VisibilityData
Waveguide to/frmVLA antennas
9 trk tape
Visibility Data,Monitor DataVLA Archive
Format
Workstations
I/O bus
IPS IPSdisk
Ethernet
VLA Operator Cntrl
CMP
VLA Cmnds & Monitor Data
VLA Cmnds &Monitor Data
RS
2 32
Linux/Wintel
(mchost)
Linux/WintelOracle(c3po)
EVLAnetwork
(Ethernet)
Monitordata,
VLA &EVLA
Raw
ant
enna
dat
aM
onito
r da
ta
Cm
nds
EVLA Antennas
DRacks
DTSRcvr
Cm
nd
sM
on
ito
r D
ata
EVLA IFDTS
Reconstitutedanalog data
Workstation
Linux/Wintel (igloo)
NewSystem
Controller
NewArrayPrcsr
CorrelatorControl
via Modcomp
EVLA Op Cntrl
. . .
Path for EVLAcontrol of
old Correlator
14-Jun-2004 EVLA Software Design ReviewTransition Plan
Bill Sahr 8
New Correlator Controller
CPU(Motorola)
ArrayProcessorInterface
CPUArchiving
Telcal
VME bus
VSB bus
VLA correlatorintegrator
Ethernet
Boss(Modcomp)
Archive
14-Jun-2004 EVLA Software Design ReviewTransition Plan
Bill Sahr 9
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
File: /users/bsahr/EVLA/architecture_design/hybrid_array/EVLA_archiving.vsd
Serial LineController
Samplers Delays X +
DRacks
AnalogSum
Baseband IFs
Correlator
VisibilityData
Waveguide to/frmVLA antennas
Cntrl Bldg Ethernet
CMP
VLA Cmnds &Monitor Data
Linux/Wintel
(mchost)
EVLA PatchPanels &Switches
Raw
ant
enna
dat
aM
onito
r da
ta
Cm
nds
EVLA Antennas
DRacks
DTSRcvr
Reconstitutedanalog data
NewSystem
Controller
NewArrayPrcsr
. . .
Dig
itiz
ed a
nte
nna d
ata
Cm
nds
Monitor
Dat
a
Workstation
EVLA Op Cntrl
Linux/WintelOracle(c3po)
Monitordata,
VLA &EVLA
Archiving,VLA Format,
TelCalStorage
ArchiveData
14-Jun-2004 EVLA Software Design ReviewTransition Plan
Bill Sahr 11
Milestones, Near Term
• mid-June 2004 First Fringes on Ant 13 at L band (done)• mid-July 2004 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 ReviewTransition Plan
Bill Sahr 12
Milestones, Mid-term,Revision
• Q1 2005 Control of new VLA Correlator Controller by Modcomp hosted software
• Q1 2005 WIDAR Correlator PDR (3/29-3/30/2005)• Q2 2005 Control of new VLA Correlator Controller by
EVLA-hosted software• Q3 2005 Archiving and Telcal functionality added to
new Correlator Controller• Q4 2005 Control of VLA antennas by EVLA-
hosted software• End of Modcomps retired
Q4 2005
File: /users/bsahr/EVLA/architecture_design/hybrid_array/EVLA_archiving.vsd
Serial LineController
Samplers Delays X +
DRacks
AnalogSum
Baseband IFs
Correlator
VisibilityData
Waveguide to/frmVLA antennas
Cntrl Bldg Ethernet
CMP
VLA Cmnds &Monitor Data
Linux/Wintel
(mchost)
EVLA PatchPanels &Switches
Raw
ant
enna
dat
aM
onito
r da
ta
Cm
nds
EVLA Antennas
DRacks
DTSRcvr
Reconstitutedanalog data
NewSystem
Controller
NewArrayPrcsr
. . .
Dig
itiz
ed a
nte
nna d
ata
Cm
nds
Monitor
Dat
a
Workstation
EVLA Op Cntrl
Linux/WintelOracle(c3po)
Monitordata,
VLA &EVLA
Archiving,VLA Format,
TelCalStorage
ArchiveData
14-Jun-2004 EVLA Software Design ReviewTransition Plan
Bill Sahr 14
Milestones, Long Term
• Q1-Q2 Assembly, HW tests, On-Sky tests of 2006 prototype WIDAR correlator at VLA site
• Q2 2006 WIDAR Correlator CDR (6/19-6/20/2006)
• Q4 2007 Acceptance of WIDAR Correlator subset
• Q4 2007 Science data archiving, EVLA format
• Late Q4 Start of “shared-risk” observing with 2007 WIDAR Correlator subset
14-Jun-2004 EVLA Software Design ReviewTransition Plan
Bill Sahr 15
Milestones, long term
• End of Turnover of full WIDAR CorrelatorQ4 2008
• End of Earliest possible date to retire the VLAQ4 2008 Correlator
• Q3 2010 Last VLA antenna retrofitted to the EVLA design
End of Hybrid Array Operations
• Late Q2 Last EVLA receiver installed2012