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lbaops:expres-specifications [2007/01/10 17:00]
chris.phillips
lbaops:expres-specifications [2015/12/18 16:38] (current)
Line 1: Line 1:
-=====  EXPReS Specifications\\ ===== +=====  EXPReS Specifications ===== 
-\\ + 
-====  Connectivity\\ ==== +====  Connectivity ==== 
-\\ + 
-The 3 ATNF telescopes are connected to Sydney via 1 Gbps "​lightpaths"​. This is shared with production traffic to the observatories.\\ +The 3 ATNF telescopes are connected to Sydney via 1 Gbps "​lightpaths"​. This is shared with production traffic to the observatories. 
-\\ + 
-  *  Initial testing will be via standard AARNET route to Europe. This is via Singapore and uses 4x155 Mbps connections\\ +  *  Initial testing will be via standard AARNET route to Europe. This is via Singapore and uses 4x155 Mbps connections 
-\\ + 
-  *  Routing will then be changed to use the SX Transport 10 Gbps line via the USA. Given the increased RTT this may not give better TCP throughput\\ +  *  Routing will then be changed to use the SX Transport 10 Gbps line via the USA. Given the increased RTT this may not give better TCP throughput 
-\\ + 
-\\ + 
-====  Protocols\\ ==== +====  Protocols ==== 
-\\ + 
-What protocol needs to be used for the transfers? TCP, UDP, VSI-e, something else?\\ +What protocol needs to be used for the transfers? TCP, UDP, VSI-e, something else? 
-If anything other than TCP (or a similar reliable stream interface) is used then is a packet header format needed (so lost packets don't screw up the data stream).\\ +If anything other than TCP (or a similar reliable stream interface) is used then is a packet header format needed (so lost packets don't screw up the data stream). 
-\\ + 
-====  Data Format\\ ==== +====  Data Format ==== 
-\\ + 
-The Mark5B "​file"​ format will be used. This consists of the raw baseband data with regular time headers and header CRC.\\ +[[lbaops:​expres:​mark5bformat | Mark5b data format ]] 
-\\ + 
-  *  Will Mark5A+ or Mark5B playback be used for these tests. Mark5B playback does not used the CRC in the header so this makes the implementation a little easier.\\ +The Mark5B "​file"​ format will be used. This consists of the raw baseband data with regular time headers and header CRC. 
-\\ + 
-  *  Need to specify and agree on the "track assignment"​ and bit encoding used.\\ +  *  Will Mark5A+ or Mark5B playback be used for these tests. Mark5B playback does not used the CRC in the header so this makes the implementation a little easier. 
-\\ + 
-====  Control\\ ==== +  *  Need to specify and agree on the "track assignment"​ and bit encoding used. 
-\\ + 
-A thin Mark5(B?) client will be written which emulates a real Mark5 and directly controls the LBADR recorder. ​\\ +====  Control ==== 
-\\+ 
 +A thin Mark5(B?) client will be written which emulates a real Mark5 and directly controls the LBADR recorder.  
   *  Minimal Mark5 command set needs to be specified in sufficient detail for implementation.   *  Minimal Mark5 command set needs to be specified in sufficient detail for implementation.
 +
 +[[lbaops:​expres:​commandset | Minimal Mark5 command set ]]
 +
lbaops/expres-specifications.txt · Last modified: 2015/12/18 16:38 (external edit)