Originally posted by: Assimilator1
Don't see anything on the SETI site (even under splitter status) saying 1999
As for your link ,I've no idea what the WU numbers mean ,you saying 99=1999? (and that the 1st bit is date/month?)
I guess if their carrying out a better search of the WUs than previously then their is some worth in redoing some old WUs.
The 1999-tape is finished splitting, so isn't showing-up on the status-page any longer.
A full "Task"- (result)-description is example:
13jn02aa.24708.5249.723592.3.182_2_0
13jn02aa = date started recorded, meaning this is 13 June 2002. aa is 1st. tape this day, ab is 2nd, and ac is 3rd. tape (not common).
24708 = process-id on the Splitter-process responsible for splitting now. Stopping & re-starting splitter will give a different process-id.
5249 = "block"-number, as mentioned on Status-page, each "block" is roughly 1.7 seconds recorded data, and each tape contains roughly 33k "blocks". So basically, how long out on a tape you are.
Due to some overlap between wu to make sure all signal-types can be detected, splitter reads-in 48 "blocks"...
723592 = byte-offset from last block split or something, not sure but the higher the 182-part is it's possible byte-offset is also higher...
3 = new parameter, has to do with Science Database-configuration, to speed-up Assimilation. Can normally be the same for many months...
182 = one of the 256 "pieces". Seti records a 2.5 MHz wide band sentered around 1.42GHz, but giving-out the full 2.5 MHz is much too big, so it's divided into 256 "pieces" each of 9766 Hz. These "pieces" is numbered 0 to 255.
The last 2 things is not part of the wu, but for BOINC to track the different unique Tasks (Results) for a wu:
_2 = shows which of Tasks (results) for a wu this is, and shows order is generated. Starts at _0 and increases upwards. Meaning _2 is the 3rd. Task generated. Note, BOINC does not need to send-out the Tasks in the same order as specified, so _3 can be sent-out earlier than _0.
For seti, _4 and higher indicates atleast one Task reported as error, or past deadline.
_0 = result-file to upload. _0 AFAIK means there's only 1 result-file. With example BBC/CPDN, the various result-files is numbered _1, _2, _3, ... _16 (for 16 total).
As for why there's some "old" tapes being distributed, as mentioned in Technical News, this is from tapes that for various reasons is missing an usable Scientific Result for many of the tapes wu.
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