Greg Hess Posted January 24, 2003 Share Posted January 24, 2003 I finished the Vray tests last night. I'll post the results this weekend. Under XP Vray sees the two logical processors as physical ones, and assigns each to a thread in the rendering process. This pretty much allows for the maximum hyperthreading benefit and seems to make a pretty massive difference. I'll post HT vs non HT results later when I have time. (The full suite of tests takes 4 hours) But heres a little snaglet of info. 2.66B Pentium IV -3:20 Dual 1900+ MP -2:23 Dual 2.8B HT Boxxtech -1:29 This is on Da'Elf's tower scene. More info will be presented soon. Just dropping you all little tidbits since many people are looking into upgrading systems and what not soon. Link to comment Share on other sites More sharing options...
seismograph Posted January 25, 2003 Share Posted January 25, 2003 hmm.. (?) does the "dual" means that there are two p4 2800 inside or does it mean that there is one hyperthreaded single processor? else my calc goes like that: Dual P4 2800 = 1:29 -> means one Single P4 2800 = 3:00 Single P4 2660 = 3:20 20sec. less for 5% more mhz. Link to comment Share on other sites More sharing options...
Greg Hess Posted January 25, 2003 Author Share Posted January 25, 2003 does the "dual" means that there are two p4 2800 inside or does it mean that there is one hyperthreaded single processor? Dual means Two PHYSICAL 2800B Xeon's in the machine. http://www.3dluvr.com/crossbow/incoming/Photos/Boxx/ Vray treats the hyperthreading as 2 Logical, and 2 Physical, assigning 4 threads during rendering. I'll do the single 2800B Xeon later, but those tests will run in the multihours, so they come last . I'm testing with hyperthreading off right now, and will have results later this evening. (Some of the new render tests take an hour to two hours to run) Link to comment Share on other sites More sharing options...
Christian Miranda Posted January 25, 2003 Share Posted January 25, 2003 Greg, Do you mean Vray launches 4 buckets on the dual Xeon with HT enabled? If so that´s amazing! The rendering times are already incredible. I think you have made the right choice on multithreaded benchmark. It´s a pity that Xeons are a hella of expensive here in Brazil, some dual motherboards (not the most expesive) can cost about $1,000(american dollars). You are quickly becomming the king of hardware reviewing and benchmarking! Link to comment Share on other sites More sharing options...
Greg Hess Posted January 25, 2003 Author Share Posted January 25, 2003 Do you mean Vray launches 4 buckets on the dual Xeon with HT enabled? If so that´s amazing! The rendering times are already incredible. Yes. It does. I just finished the first set of HT benchmarks. The Vray ones should be done by sunday evening, at which point I'll post the results. Link to comment Share on other sites More sharing options...
seismograph Posted January 26, 2003 Share Posted January 26, 2003 ok when you are talking about two cpu's then there is nearly no speedup with HT. Maybe there are four buckets, but they will need longer for calculating one bucket. Two cpus needs half of time one cpu need... where is the HT-factor? ..can't wait for your benches... Link to comment Share on other sites More sharing options...
Christian Miranda Posted January 26, 2003 Share Posted January 26, 2003 Hi, Usually a dual processor machine won´t give you a 2x speed-up. The newer Xeons with HT are like one processor with 2 cores (one at 100% and the second at about 20 or 30%). So Vray should be theorectically splitting the four buckets the following way: First thread at 100% Second thread using HT at 20-30% Third thread at 100% Fourth thread using Ht at 20-30% Please someone correct me if I´m wrong. Let´s wait for Greg´s benchmarks... Link to comment Share on other sites More sharing options...
Greg Hess Posted January 26, 2003 Author Share Posted January 26, 2003 OI! Both of you, ssshhh. You'll get a nice explanation of whats going on when the review's done. Here's the two scores (Working on the 3rd scene now, 9 total) Resolutions are NTSC (D1), 1024x768 (WEB), and 2048x1536 (FILM) Sibenik (Cathedral) by Marko Dabrovic Non Hyperthreaded. NTSC: 1436.2 Seconds Web: 2674.2 Film: 7364.2 Hyperthreaded. NTSC: 1125.9 Seconds Web: 2003.9 Film: 5784.6 % improvement from HT 21% 25% 21% On this scene the performance increase from hyperthreading was about 21-25%. Why is web 4% off? This is why I run all the tests multiple times...this is just the first run so I can end the argument . I decided not to post the second and third, so you'll actually read the article. So basically, 21% faster render times is a MASSIVE change. Its almost 2000 seconds at film res! Thats more then upgrading three full chip steppings. (going from a 2.53 to a 2.8 for example) [ January 26, 2003, 07:40 AM: Message edited by: Greg Hess ] Link to comment Share on other sites More sharing options...
@lkion O Posted January 28, 2003 Share Posted January 28, 2003 Hi Greg, hope you like this site!http://www6.tomshardware.com Link to comment Share on other sites More sharing options...
Greg Hess Posted January 28, 2003 Author Share Posted January 28, 2003 Ha ha. Very funny. Who is that? Geert? Everyone knows how much I despise tomshardware. Worst tech site on the web. Biased, Lying, Criminal Slander, and Falsified reports. Don't mind me while I shove that site into the garbage disposal. Link to comment Share on other sites More sharing options...
@lkion O Posted January 29, 2003 Share Posted January 29, 2003 OUUUPS sorry Greg!Are you a supporter of overclocking? Any suggestions on better sites than toms hardware? Link to comment Share on other sites More sharing options...
bigcahunak Posted January 29, 2003 Share Posted January 29, 2003 Originally posted by @lkion O: OUUUPS sorry Greg!Are you a supporter of overclocking? Any suggestions on better sites than toms hardware? Depending what your platform is, there are many out there: For dual stuff - www.2cpu.com for AMD stuff - www.amdmb.com Go with links from there. Dunno any for intel... try tomshardware... Oh, maybe [H]ard. Link to comment Share on other sites More sharing options...
Greg Hess Posted January 29, 2003 Author Share Posted January 29, 2003 Also check out... www.hardocp.com www.overclockers.com www.ars-technica.com www.maximum3d.com www.tech-report.com www.anandtech.com I don't support overclocking on workstations. If your using your system to make money, then overclocking is just a stupid way to introduce another stability variable into the equation. Nothing like trying to meet a deadline when your system crashes from an overclocked FSB. However if its just a fun machine, or non primary workstation, sure do whatever the hell you want . As for tomshardware, here's a thread on the topic. The site is nothing more then a source of misinformation on the web. http://www.cgtalk.com/showthread.php?s=&threadid=24408&highlight=tomshardware Link to comment Share on other sites More sharing options...
@lkion O Posted January 29, 2003 Share Posted January 29, 2003 Ok Greg thank you for all the info. i see what you mean and now that ive seen the proofs your absolutely right! thanks for the links as well ! Link to comment Share on other sites More sharing options...
Christian Miranda Posted March 9, 2003 Share Posted March 9, 2003 Hi Greg, Any news on that giant hardware review of yours? I´m specially interested on the dual Xeon/Max/Vray subject. Would a single 3.06Ghz Xeon render (with Vray) faster than a dual Athlon 2000+? I´m tempted at saving money for a dual Xeon monster though. Thanks in advance. Christian Miranda | 3dartist Link to comment Share on other sites More sharing options...
Greg Hess Posted March 9, 2003 Author Share Posted March 9, 2003 Christian, I have finished the Vray, Max, and lightwave HT and non HT tests. For the dual xeon. I'm now running the single 2.8 Xeon HT and non HT tests for the same three packages. Then I'll release a review of the boxxtech, and the first HT/non HT results for part 1. (Part2 is Maya and XSI) I'd avoid getting a 3.06 processor at all costs right now. The step up in price is NOT worth the performance difference. You can almost get two 2.8 Xeons (ALL xeons have HT) for the price of a single 3.06 Xeon. There is a massive intel pricecut on May 11th. (Some chips dropping more then 100 USD). Link to comment Share on other sites More sharing options...
Christian Miranda Posted March 10, 2003 Share Posted March 10, 2003 Greg, Thanks for the quick reply. Please keep us posted on your article! Christian Link to comment Share on other sites More sharing options...
Christian Miranda Posted April 24, 2003 Share Posted April 24, 2003 Hi Greg, Please keep us posted on your highly expected dual xeon benchmark. Thanks in advance, Christian Link to comment Share on other sites More sharing options...
Richie Posted April 24, 2003 Share Posted April 24, 2003 Hello Yes, Greg is correct. I would say the best buy today is 2.66 Xeon, since the OEM price for 3.06 Xeon is dropped to ~400,-USD. In ~2 Weeks (the resseler needs to get the new prices cach the market) best buy will be the 2.8 Xeon. Richie Link to comment Share on other sites More sharing options...
Christian Miranda Posted June 14, 2003 Share Posted June 14, 2003 Hi Greg, How are you? Do you still plan to publish your article on the dual Xeon system? Greetings from Brazil. Christian Link to comment Share on other sites More sharing options...
Greg Hess Posted June 15, 2003 Author Share Posted June 15, 2003 Ya I do eventually. It just takes alot of free time, which I haven't had any of lately. Link to comment Share on other sites More sharing options...
leonmagnavox Posted March 29, 2008 Share Posted March 29, 2008 im confused.. Link to comment Share on other sites More sharing options...
IHAB Posted March 29, 2008 Share Posted March 29, 2008 how did you find this ancient thread ? Link to comment Share on other sites More sharing options...
kippu Posted March 29, 2008 Share Posted March 29, 2008 yeay hyperthreading ... i am so excited !!!! Link to comment Share on other sites More sharing options...
leonmagnavox Posted April 12, 2008 Share Posted April 12, 2008 haha... is there a ancient forum finding competition? Link to comment Share on other sites More sharing options...
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