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发表于 2011-7-2 21:07:32
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本帖最后由 vmzy 于 2011-7-3 10:52 编辑
Sat Jul 02, 2011 1:11 am
bigadv points changes
After much discussion, we are adjusting the points bonus for bigadv. Bigadv work units have been given a 50% base points bonus over standard SMP; the rationale for this was to compensate for the increased system load, increased memory requirements, and increased upload/download bandwidth requirements. As judged from the high demand for bigadv work units, this has been very much a success, perhaps a little too much so. We would like to continue to offer a bonus for bigadv to offset the above factors, but we don't want demand for bigadv to overwhelm the rest of the project or imbalance the points system.
We are therefore dropping the bigadv base points bonus from 50% to 20%, effective for all work units issued this time onwards.
We very much appreciate the donors who have volunteered to run bigadv work units; these projects add substantially to our scientific capabilities. We do important science with all classes of work units, however, and we want the points system to reflect that. Based on extensive feedback, we are considering renormalizing other parts of the system but have not finalized decisions in that regard.
Thanks again for folding!
New points values, old points values, and unadjusted base values are given in the table below. Deadlines and k-factors remain unchanged.
"Standard points" is what the project would receive for base points if standard SMP. "Old bigadv" is the old bigadv base points (50% bonus). "New bigadv" is the new bigadv base points (20% bonus).
Project Standard points Old bigadv New bigadv Preferred Final k-factor
2684 8529 12790 10235 4 6 26.4
2685 5970 8955 7164 4 6 26.4
2686 5970 8955 7164 4 6 26.4
2689 5970 8955 7164 4 6 26.4
2692 5970 8955 7164 4 6 26.4
6900 5970 8955 7164 4 6 26.4
6901 5970 8955 7164 4 6 26.4
6903 18923 28385 22708 7.2 12 38.05
6904 26284 39426 31541 10.2 17 37.31
大意：
经过激烈的讨论，我们决定下调bigadv的基础分。之前bigadv比普通smp高50%，但是由于得分过高，打破了积分系统的平衡性，所以我们把基础分改为高20%。到期时间和积分奖励系数，均不改变。
July 02, 2011
Change in the points system for bigadv work units
For new bigadv WUs, we have changed how the points are calculated to bring them back into balance with the rest of the points in Folding@home. There are more details in this post:
http://foldingforum.org/viewtopic.php?f=24&t=19059
The main jist of the change is that we are decreasing the points associated with bigadv WUs, from 50% over SMP to 20% over SMP. As with previous points changes, this deals with only new WUs to go out, not with WUs that have be collected, etc. I want to stress that the bigadv program is still continuing, but that, as we've mentioned before, this is an experimental program and subject to changes.
It's clear that any change to the points system is controversial, but this one has been raised as a very serious problem by many donors. After investigating the issues raised, we agreed that this was significantly out of balance, and made this change. Moreover, the feedback we have gotten is that we make a change soon and do so quickly, like "removing a bandaid" rather than drag out the pain. I'm sorry to have to make any changes at all, since any change is disruptive, but we (and many donors) felt very strongly that this change was very important.
The other change that we have in mind to do is to bring all classic and GPU WUs into the Quick Return Bonus (QRB) system. This would help further bring all FAH projects into balance. There may be some issues with GPUs and QRB, so we are looking to see what we can do to minimize problems with that before making a change in the points for GPU WUs.
Finally, I would like to remind all that we do listen to donors and take their input very seriously. There has been extensive discussions about the problems with the points system with the huge PPD's seen with bigadv (sometimes reaching 500,000PPD) and the lack of QRB for GPUs being major shortcommings.
Considering the great variety of donor opinions on this matter, it is no surprise that we agree with some donors and disagree with others. Moreover, with points, there will never be any system which makes everyone happy, but our goal is to try our best to balance the project as a whole, taking donor input seriously, and making hard calls when we feel it is necessary. This was definitely a hard call, but hopefully in time donors who disgaree now will come to understand the issues raised by the other donors and appreciate their point of view.
大意：
为了稳定积分系统的平衡性（有太多人抱怨bigadv彪分过快，有时可达50万PPD），我们下调了新的bigadv任务的基础积分。详见：http://foldingforum.org/viewtopic.php?f=24&t=19059
下一步，我们将给单核及GPU任务加入积分奖励机制。进一步平衡积分系统。
译者注：看来bigadv的ppd要大降了，大家还是老老实实做GPU党吧。 |
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发表于 2011-4-1 09:57:17
