Why do some unusually large timestamp values appear in my sc

[sprajagopal]

I'm finding some unusually large timestamp values in my scope data. Attached below. All records of Type="1". Is this a glitch? Has anyone encountered this before? 

NOTE: The whole scope data is for 5 seconds, start to end. So, the values definitely don't make any sense.

 

<Record Type="1" Color="1" Start="18446741394145001616" End="18446741394145001616" PC="67548" Tile="tile[800a]" LogicalCore="0" User="6944"/>

<Record Type="6" Color="6" Start="16215590000" End="16215590000" PC="75782" Tile="tile[800b]" LogicalCore="3" User="6944"/>
<Record Type="6" Color="6" Start="16229490000" End="16229490000" PC="75782" Tile="tile[800b]" LogicalCore="3" User="6944"/>
<Record Type="8" Color="8" Start="16217010000" End="16217010000" PC="75810" Tile="tile[800b]" LogicalCore="3" User="6944"/>
<Record Type="7" Color="7" Start="16216290000" End="16216290000" PC="75796" Tile="tile[800b]" LogicalCore="3" User="6944"/>
<Record Type="2" Color="2" Start="18446741394156151616" End="18446741394156151616" PC="67556" Tile="tile[800a]" LogicalCore="0" User="6944"/>
<Record Type="7" Color="7" Start="16230190000" End="16230190000" PC="75796" Tile="tile[800b]" LogicalCore="3" User="6944"/>
<Record Type="7" Color="7" Start="16244090000" End="16244090000" PC="75796" Tile="tile[800b]" LogicalCore="3" 
 
 
EDIT:
 The problem is gone if I run all the tasks being scoped in the same tile. Peculiar. 

[peter]

Yes, this is a known issue:

http://www.xcore.com/forum/viewtopic.php?f=26&t=2572

So far we haven't had a test case that allows us to reproduce the issue. If you could give us the tools version you are using and a way to reproduce this issue then we will do our best to fix it.