Mike, Thanks for the heads up. Actually, my i7s are 930. Does this make any difference?
Ed 2010/7/9 Michael Segel <michael_se...@hotmail.com> > > Just a nit. > > i7s are quad core. While Intel has 2 'threads' per core. (I'm assuming > you're using the i7's (800 series and below) in a single socket mother > board.) > Based on experience with tuning other databases, I am a bit skeptical about > going beyond the number of cores. Also your memory is probably going to be > more of a driver on the number of map/reduce tasks you can run > simultaneously. > > JMHO, YMMV. > > -Mike > > > > Date: Fri, 9 Jul 2010 10:14:14 +0900 > > Subject: Re: How to control the number of map tasks for each nodes? > > From: mp2...@gmail.com > > To: common-user@hadoop.apache.org > > > > Thanks you all for the info. > > > > I have successfully configured my cluster. > > Thanks again. > > > > 2010/7/8 edward choi <mp2...@gmail.com> > > > > > Hi, > > > > > > I have a cluster consisting of 11 slaves and a single master. > > > > > > The thing is that 3 of my slaves have i7 cpu which means that they can > have > > > up to 8 simultaneous processes. > > > But other slaves only have dual core cpus. > > > > > > So I was wondering if I can specify the number of map tasks for each of > my > > > slaves. > > > For example, I want to give 8 map tasks to the slaves that have i7 cpus > and > > > only two map tasks to the others. > > > > > > Is there a way to do this? > > > > > _________________________________________________________________ > The New Busy is not the old busy. Search, chat and e-mail from your inbox. > > http://www.windowslive.com/campaign/thenewbusy?ocid=PID28326::T:WLMTAGL:ON:WL:en-US:WM_HMP:042010_3
