去年跑了一段时间的分布式计算，参与了2个项目，SETI@home和World Community Grid。前者是是一项利用全球联网的计算机共同搜寻地外文明的科学实验计划，后者是对人类基因组计划，及癌症、艾滋等疾病研究。 我的主要兴趣是在SETI@home上，我相信，一定存在地外文明。
去年跑了一段时间以后BOINC的服务器好像挂掉了，好长时间接不到任务，也连不上。后来换了电脑，一忙就把这事忘掉了，直到昨天收到SETI@home发来的一封邮件。邮件的标题是“Please rejoin SETI@home”，先是描述了一下我有好长时间没有参与这个事情的情况，然后介绍了一下整个项目的最新情况，最后列了几个帮助文档的链接。这封邮件让我感觉很温馨，有一种来自组织的关怀感。虽然我现在换了操作系统，用上了ubuntu，但我仍然想参与SETI@home。
事实上，对于这类项目来说，什么终端、什么操作系统根本不成问题。我仔细阅读了帮助文档，只用了几分钟的时间就重新安装好了客户端和管理程序，非常简单。事实上，ubuntu的官方源内就有BOINC，只需要apt-get一把就ok了。BOINC的wiki上面写的很清楚，从这个就可以看出来有非常多的人为这件事情在做无偿的工作。你可以直接从源安装，也可以下载包安装，也可以下载源码自己编译安装。这让我进一步感受到了开源世界的伟大。
今天是2008年5月23日，今天我从又开始计算了，一切都非常顺利。抓了张图，做为纪念。
以下是邮件全文：
引用内容：
Dear jianjun:
We'd like to invite you to reconnect with SETI@home. Our records show that you've been with SETI@home since 27 February 2007, but it's been 235 days since you last returned a work unit. We want you back, and here's why:
These are exciting times for SETI@home. Last year we implemented a new SETI@home data recorder at the Arecibo radio telescope in Puerto Rico. This recorder is attached to a state-of-the-art multibeam receiver, so we can now measure signals from 7 positions on the sky at once, with greater sensitivity to weak signals compared to the data from the flat feed antenna we've used since 1999. We've greatly increased the sensitivity of our data analysis, and the likelihood that we'll find the first signs of extraterrestrial life. We're also close to releasing a second application, Astropulse, which will look for extremely short pulses of astronomical (and possibly intelligent) origin.
With these new developments comes an increase in required computing power, for which we depend on people like you. We hope you will consider signing back on with SETI@home, and help in this wonderful scientific venture.
If you experienced problems running SETI@home, please try any of the resources listed at: http://setiathome.berkeley.edu/sah_help.php including the new BOINC Online Help System which lets you talk live, over the Internet, with a help volunteer: http://boinc.berkeley.edu/help.php
We thank you for your involvement in SETI@home, and hope that you rejoin us in our search for signals from other worlds.
-- The SETI@home team
To not get any more email from SETI@home, please click here.
SETI@home - http://setiathome.berkeley.edu
Space Sciences Laboratory / 7 Gauss Way
University of California, Berkeley, CA 92740-7450
We'd like to invite you to reconnect with SETI@home. Our records show that you've been with SETI@home since 27 February 2007, but it's been 235 days since you last returned a work unit. We want you back, and here's why:
These are exciting times for SETI@home. Last year we implemented a new SETI@home data recorder at the Arecibo radio telescope in Puerto Rico. This recorder is attached to a state-of-the-art multibeam receiver, so we can now measure signals from 7 positions on the sky at once, with greater sensitivity to weak signals compared to the data from the flat feed antenna we've used since 1999. We've greatly increased the sensitivity of our data analysis, and the likelihood that we'll find the first signs of extraterrestrial life. We're also close to releasing a second application, Astropulse, which will look for extremely short pulses of astronomical (and possibly intelligent) origin.
With these new developments comes an increase in required computing power, for which we depend on people like you. We hope you will consider signing back on with SETI@home, and help in this wonderful scientific venture.
If you experienced problems running SETI@home, please try any of the resources listed at: http://setiathome.berkeley.edu/sah_help.php including the new BOINC Online Help System which lets you talk live, over the Internet, with a help volunteer: http://boinc.berkeley.edu/help.php
We thank you for your involvement in SETI@home, and hope that you rejoin us in our search for signals from other worlds.
-- The SETI@home team
To not get any more email from SETI@home, please click here.
SETI@home - http://setiathome.berkeley.edu
Space Sciences Laboratory / 7 Gauss Way
University of California, Berkeley, CA 92740-7450
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