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From | Kiss Sándor Csanád <kiss.sandor.csanad@mkkt.hu> |
To | "statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu> |
Subject | RE: st: Op. sys. refuses to provide memory - a cautionary tale |
Date | Tue, 24 Aug 2010 09:52:46 +0000 |
Sorry guys, I read all this, and also this http://www.stata.com/statalist/archive/2010-01/msg00409.html but what is the final word? How much memory can a 64bit system handle? Thanks Kiss Sándor Csanád Elemző közgazdász / Economist Office of the Fiscal Council, Hungary 1055 Budapest, Honvéd utca 20. T: (+36 1) 510 3025 Mobil: (+36 30) 703 1024 Fax: (+36 1) 510 3099 Web: www.mkkt.hu -----Original Message----- From: owner-statalist@hsphsun2.harvard.edu [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of Jeph Herrin Sent: Monday, August 23, 2010 7:30 PM To: statalist@hsphsun2.harvard.edu Subject: Re: st: Op. sys. refuses to provide memory - a cautionary tale I took the plunge on Windows 7 64bit and have been very satisfied with it relative to XP 64bit, which is what that machine was running. Though with only 16gb RAM, I haven't really put it to the test you envision with 192gb. For what it's worth, I shop my PCs from a custom builder that caters to engineers and CAD/CAM types; they were dead set against selling Vista but said that Win7 had so far proved itself for their customers and they were recommending it for those who needed not-Linux. cheers, Jeph On 8/23/2010 12:45 PM, Jay Tuthill wrote: > Hi All, > > I'm also in the middle of upgrading my hardware as my current 32 bit > computers will not let me run very efficiently the datasets I want. I'm > considering the new Intel workstation system SC5650SCWSR which offers > dual Xeon processors and up to 192GB of RAM. Am curious if anyone has > compared the Windows 7 64bit versus Window Server 2008 R2 64bit > operating systems. (I have built my own computers for several years and > have a wide latitude in how I configure them.) > > Thanks...Jay > > -----Original Message----- > From: owner-statalist@hsphsun2.harvard.edu > [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of Eric Booth > Sent: Saturday, August 21, 2010 5:24 PM > To:<statalist@hsphsun2.harvard.edu> > Subject: Re: st: Op. sys. refuses to provide memory - a cautionary tale > > <> > > On Aug 21, 2010, at 4:19 PM, Eric Booth wrote: > >> but beyond this limit Stata won't slow down as you add or allocate > more RAM. > > Clarification: > That should say, "but UP TO (or before you reach this memory limit) > Stata won't slow down as you add or allocate more RAM..." > > On Aug 21, 2010, at 4:19 PM, Eric Booth wrote: > >> <> >> On Aug 20, 2010, at 4:07 PM, Tony wrote: >>> Too much RAM will slow it down. >> >> Stata will certainly slow down if you set and use more memory in Stata > than is physically available on your machine because you start using > virtual memory, but beyond this limit Stata won't slow down as you add > or allocate more RAM. >> That is, it will take the same time to run a do-file on a 1G dataset > whether you allocate 2G, 8G, or 20G of memory to Stata; however it will > get excruciatingly slow if you set your memory to 500m and use a 1G > dataset. >> >> >>> On Fri, Aug 20, 2010 at 1:28 PM, Craig, Benjamin M. wrote: >> >>>> The purpose is real world speed, so has anyone actually noticed if > going >>>> up to 24GB RAM, solid state drive expedited your jobs >> >> >> I haven't tested the idea of getting a SSD drive, but I think the > speed advantage would be evident mainly when you were opening(reading) > or saving(writing) a large dataset since your using the data in memory > the rest of the time. I do want to try out installing a SSD drive for > working with data that is larger than my physical RAM and requires me to > use virtual memory to work with it (I've maxed out my physical RAM with > 8G sticks in each of the slots). I've read about moving your page/swap > file to a SSD which should speed things up when working in virtual > memory (but since SSDs wear out faster with more read/writes, this might > be a concern). Also, you could move the location of the tempfiles that > Stata creates to that path by setting your OS system temp file location > (see: http://www.stata.com/statalist/archive/2009-05/msg00416.html). > Maybe someone here has tried working with SSD and large datasets ? >> >> Again, more RAM is always better IMO--but it only speeds you up in the > sense that it prevents you from using page file. There are also speeds > associated with RAM (mine is 1066 DDR3), but I don't know much > differences in memory speed matters. >> >> >>> On Fri, Aug 20, 2010 at 1:28 PM, Craig, Benjamin M. wrote: >>>> Does any listserv member think that I should go from 6 to 12 cores? >>>> >>>> Six Core Processor,X5680,3.33GHz,12M,6.4GT/s >>>> Dual Six Core Processor,X5680,3.33GHz,12M,6.4GT/s >> >> Depends on what you are doing. If you've got a time intensive > procedure that you're running on your 6 core machine, try running it > with your -set processors- at 1, 2, 4, and 6 and see what kind of speed > increase you observe, e.g.: >> >> *****! >> timer clear >> forval n = 1(2)6 { >> clear all >> set mem 32g >> set processors `n' >> timer on `n' >> <your command goes here> >> timer off `n' >> } >> timer list >> *****! >> >> ~ Eric >> >> >> __ >> Eric A. Booth >> Public Policy Research Institute >> Texas A&M University >> ebooth@ppri.tamu.edu >> Office: +979.845.6754 >> >> >>> >>> On Fri, Aug 20, 2010 at 1:28 PM, Craig, Benjamin M. >>> <Benjamin.Craig@moffitt.org> wrote: >>>> Thanks Nick, I have learned that to truly take advantage of the > latest >>>> version of Stata, 64-bits and 4 or more cores is required. To be a > bit >>>> more specific, lets assume I am using 6-core Stata MP on Windows 7 >>>> Professional, 64-bit for computationally intensive simulation > analyses. >>>> >>>> Does any listserv member think that I should go from 6 to 12 cores? >>>> >>>> Six Core Processor,X5680,3.33GHz,12M,6.4GT/s >>>> Dual Six Core Processor,X5680,3.33GHz,12M,6.4GT/s >>>> >>>> Is it worthwhile to upgrade from RAM and Hard drive? For example, >>>> >>>> 12GB DDR3 ECC SDRAM Memory,1333MHz,6X2GB >>>> >>>> 1TB SATA 3.0Gb/s,7200 RPM HardDrive with 32MB DataBurst Cache >>>> >>>> The purpose is real world speed, so has anyone actually noticed if > going >>>> up to 24GB RAM, solid state drive expedited your jobs? In theory, it >>>> should, but I am hoping that someone has purchase a computer > recently to >>>> test this hypothesis. >>>> >>>> Cheers, >>>> Ben >>>> >>>> >>>> Benjamin M. Craig, PhD >>>> >>>> Assistant Member, Health Outcomes& Behavior, Moffitt Cancer Center >>>> >>>> Associate Professor, Economics, University of South Florida >>>> >>>> 12902 Magnolia Dr, MRC-CANCONT, Tampa, FL 33612-9416 >>>> >>>> Phone (813) 745-6710; Fax (813) 745-6525 >>>> >>>> -----Original Message----- >>>> From: owner-statalist@hsphsun2.harvard.edu >>>> [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of Nick Cox >>>> Sent: Friday, August 20, 2010 5:00 AM >>>> To: 'statalist@hsphsun2.harvard.edu' >>>> Subject: RE: st: Op. sys. refuses to provide memory - a cautionary > tale >>>> >>>> I think this partially answers itself in that I don't think that it > can >>>> fairly be expected that a company website is a proper place for a >>>> company, in this case StataCorp, to offer opinions about anything > that >>>> is currently controversial. >>>> >>>> That said, Benjamin's question is obviously practical and a fair one > for >>>> members of this list to venture opinions and comment from > experience. In >>>> addition, presumably people other than econometricians are not > excluded. >>>> >>>> >>>> Nick >>>> n.j.cox@durham.ac.uk >>>> >>>> Craig, Benjamin M. >>>> >>>> To clarify, the website answers essential questions (which systems > are >>>> supported?) and provides some advice and education. I need to know > more >>>> details on current controversies relating to multiple core, 64-bit > and >>>> drive speeds in the real world. In this sense, it is a bit > incomplete to >>>> say that more core, more bits, and faster drives are preferable. As > was >>>> previously post, I had thought that a 32-bit dual core desktop was > good >>>> enough for my needs, and was woefully wrong. Others seem to > follow... >>>> >>>> http://www.stata.com/statalist/archive/2010-07/msg01337.html >>>> >>>> If a listserv member has tried STATA MP on multiple machines, I > would >>>> like to know what worked best so that I can buy one. There is an > obvious >>>> caveat: speed depends on the task. However, I would counter that > some >>>> data are better than none. For example, I recently bootstrapped a ML >>>> with 1000 iteration and inequality constraints. It took 4 weeks. Do > you >>>> think your machine can do better? Personally, I do not use stata for >>>> database management, and doubt that many econometricians do. If > someone >>>> has a good analytics machine, and he/she thinks that it works well, > I'd >>>> like to know its components. Maybe a consensus will emerge. Maybe > not. >>>> >>>> Martin Weiss >>>> >>>> In which respect is the Stata website "incomplete"? There is advice > at >>>> http://www.stata.com/products/opsysmp.html, and how is the website >>>> supposed to give more detailed advice? It does not know your > specific >>>> setup, hence the reluctance to go into greater depth... >>>> >>>> Craig, Benjamin M. >>>> >>>> Okay, I give up... I need a new machine. Due to institutional > policies, >>>> I need to buy a Dell. Otherwise, I would very much like any advice > on >>>> this purchase. My best guess is a 64-bit 8-core desktop for a 6-core >>>> version of Stata MP. I don't need a rocket, just a racecar. >>>> >>>> If you have any specifications that you would like to share with me, >>>> please send them directly or post them on the listserv for others >>>> looking to upgrade. I have read the Stata website, which seems >>>> incomplete. >> >> >> * >> * For searches and help try: >> * http://www.stata.com/help.cgi?search >> * http://www.stata.com/support/statalist/faq >> * http://www.ats.ucla.edu/stat/stata/ > > > * > * For searches and help try: > * http://www.stata.com/help.cgi?search > * http://www.stata.com/support/statalist/faq > * http://www.ats.ucla.edu/stat/stata/ > > * > * For searches and help try: > * http://www.stata.com/help.cgi?search > * http://www.stata.com/support/statalist/faq > * http://www.ats.ucla.edu/stat/stata/ > * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/ * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/