Dear Saul Luizaga,
sorry to hear that the uploads get too big for you, but we understand that you prefer to pull out under these circumstances. Two tips which may make your life easier: 1) restrict your settings to only run 1-2 CEP2 wus at a time; 2) restrict your upload times to the middle of the night when you are not using your network bandwidth anyways.
Also: In a few weeks we'll get about 2 million smaller wus in again with significantly smaller uploads - maybe you can come back to CEP2 then.
Best wishes and happy holidays
Your Harvard CEP team

Saul, the progres % is tuned to flat run 12 hours. No way [well, very difficult], to project completion on this science, lest they number of jobs done in the task were factored in]. Many of the jobs inside a task run shortish [5-10 minutes], but there are some that run multiple-to many hours. Sooo, yes, the jumping from 52% to 100% if the task does not need the full 12 hours is normal... bet you yours finished in just over 6 hours.

--//--

edit: Of course, not to forget those tasks that go out early with one of those RC= codes. No more mileage to achieve to continue [See result log link in the status column of respective WU].

Ok SekeRob, that's what they meant when they wrote that CEP2 WUs will be shorter on another thread. WUs took about 5 hours.

@ibsteve2u: your idea is good, I will suggest it to 7-Zip so they add it and unload that from every project.

BOINC should have a on the fly upgrade so if, like in this case, a better compression component will replace a old one it could be sent directly from BOINC developer center in Berkeley to the WCG & other project servers, that in turn they'd distribute them to the clients/servers, so the change would be completely transparent and only the projects would receive and e-mail announcing the change and they'd know how the filenames change from .gz to .7z for example and other details.

I see that this could be a problem with database management on the projects' servers where they have to match the BOINC filenames and/or compression method, so maybe this could be warned by BOINC a few weeks earlier and only be installed on projects that accept the change so if they don't they'll continue to using old components until they can catch up.

I will continue to participate since 20MB upload is not that big.

Still no hope for a 7zip compression? The upload data sizes bring my connection to knees... OK, I'm running 16 CEP2 WUs concurrently, but...

I made a comparison of result size:
Uncompressed: 61.2 MB
Compressed by BOINC (gzip?): 43.8 MB
Compressed using RAR (shareware): 32.5 MB
Compressed using 7zip/LZMA/Ultra (FREEWARE): 25.6 MB

Quite a difference...

....Why ask here on WCG? You should be asking BOINC on their site.