Message boards : Number crunching : CPU Comparison question
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zombie67 [MM] Send message Joined: 11 Feb 06 Posts: 316 Credit: 6,621,003 RAC: 0 |
Mac os x support 2 quad cores. But we don't know that it does not support more. There aren't any chips out yet to test that. I assume that OSX will support any number, as it is UNIX. Reno, NV Team: SETI.USA |
![]() ![]() Send message Joined: 16 Jul 07 Posts: 132 Credit: 98,025 RAC: 0 |
Mac os x support 2 quad cores. They have servers that support more. Jmarks |
zombie67 [MM] Send message Joined: 11 Feb 06 Posts: 316 Credit: 6,621,003 RAC: 0 |
Mac os x support 2 quad cores. Really? Which servers? I am aware of only the Xserve, which currently comes with only 2 dual core woodcrest Xeons. I assume you could manually replace them with quad core clovertown Xeons (like you can with the Mac Pro). Reno, NV Team: SETI.USA |
![]() ![]() Send message Joined: 16 Jul 07 Posts: 132 Credit: 98,025 RAC: 0 |
Mac os x support 2 quad cores. "With Xgrid on Mac OS X Server, you can turn an ad hoc group of Mac systems into a low-cost supercomputer. By streamlining the process of assembling nodes, submitting jobs and retrieving results, Xgrid makes it easy for scientists, animators and digital content creators to run a single, very large project across multiple computers at once — dramatically improving performance and responsiveness" http://www.apple.com/server/macosx/specs.html Jmarks |
![]() ![]() Send message Joined: 10 Aug 06 Posts: 127 Credit: 960,607 RAC: 0 |
This conversation has evolved... Anyways, some thoughts. Einstein awards more points for similar computers. In my mind, it has potential for astrophysics, but nothing as immediate as the medical potential of Rosetta. SETI has optimized apps, but they have more processor power than they need and actually need cash donations more than processing power (they need money for server and backup equipment) [they actually have a dude crunching on a Pentium 60MHz!]. I think it'd be cool if we detected ETs, but still protein research could have an immediate impact on the quality of life here on Earth. In the end: try to optimize your RAC for the project that inspires you the most. For me that's Rosetta & Folding (Rosetta being #1, and Folding allowing me to crunch on GPUs and PS3s). ![]() |
zombie67 [MM] Send message Joined: 11 Feb 06 Posts: 316 Credit: 6,621,003 RAC: 0 |
Mac os x support 2 quad cores. Yes, that is their DC/cluster implementation. But none of Apple's machines are currently available with more than 8 cores (on two chips). Reno, NV Team: SETI.USA |
zombie67 [MM] Send message Joined: 11 Feb 06 Posts: 316 Credit: 6,621,003 RAC: 0 |
So a Q6600 should be able to do a bit more than half, or ~1300. And as much as ~1700 OC. Well, there it is. It even broke 1700 RAC: https://boinc.bakerlab.org/rosetta/show_host_detail.php?hostid=586752 Reno, NV Team: SETI.USA |
![]() Send message Joined: 17 May 07 Posts: 18 Credit: 1,173,075 RAC: 0 |
And it's still going up... I easily broke 1200 with this machine even without overclocking. I'm not sure why other Q6600 systems aren't doing better. Most of the ones I see are below 1000. |
zombie67 [MM] Send message Joined: 11 Feb 06 Posts: 316 Credit: 6,621,003 RAC: 0 |
I'm not sure why other Q6600 systems aren't doing better. Most of the ones I see are below 1000. Perhaps they are attached to multiple projects. Reno, NV Team: SETI.USA |
![]() Send message Joined: 17 May 07 Posts: 18 Credit: 1,173,075 RAC: 0 |
Perhaps they are attached to multiple projects. Could be... although I wonder how many Q6600 systems there are out there, and how many are Rosetta only. |
Natronomonas Send message Joined: 11 Jan 06 Posts: 38 Credit: 536,978 RAC: 0 |
Perhaps they are attached to multiple projects. I know my quad is attached to more projects than any of my duals; greater project redundancy (in case one goes down), and also, it's fast enough that the turnaround on all the different WU is still good. I would imagine many people do this, unless they're aiming for a top 100/1000 computer. Crunching Rosetta as a member of the Whirlpool BOINC Teams |
![]() Send message Joined: 18 Jul 06 Posts: 109 Credit: 1,859,263 RAC: 0 |
https://boinc.bakerlab.org/rosetta/show_host_detail.php?hostid=562651 !!!!!!!! how it possible 4х core !!!!! |
![]() ![]() Send message Joined: 16 Jul 07 Posts: 132 Credit: 98,025 RAC: 0 |
https://boinc.bakerlab.org/rosetta/show_host_detail.php?hostid=562651 If you look thru the results there is a problem with wu 2138 and they are getting 1000+ rac look at the 4000 credit wu in number crunching tread. Jmarks |
Francois![]() Send message Joined: 17 Jan 06 Posts: 7 Credit: 975 RAC: 0 |
I would like to take advice on hardware, as it looks like there is some tech freaks over there..... ;) I use an old Mac G4 laptop, high end version from about 3 years ago. The CPU is at 1.2Ghz, 512Mo RAM. Im pretty happy with that. It is vastly enough for my every day use, and of course a bit slow for BOINC but i can keep pace with dead lines even with relatively big WU on Einstein. My concern is more in the architecture of the computer. The FSB is at (please dont laugh) 133Mhz. Im not an hardware engineer, but i feel like a bus frequency as low as this just CAN'T allow the CPU to work at its best. Or am i wrong? I know there is no need for the FSB to be as fast as the CPU, but that's 10 times! I understand i doesnt play a role in pure CPU computation, but since BOINC projects store about 130Mo to 260Mo on main memory, does this old fashioned FSB slow the overall process? To be honest, when i bought this computer, the other brands (even with laptops) where in majority at 333Mhz FSB, wich seems a more fair CPU/FSB ratio. (Sorry for my strange english, please correct me) |
![]() ![]() Send message Joined: 16 Jul 07 Posts: 132 Credit: 98,025 RAC: 0 |
I would like to take advice on hardware, as it looks like there is some tech freaks over there..... ;) Sure it does. That is one of the reasons Apple changed its total architecture to Intel for its Macs even though that forced them to rewrite their Os and software. This does not mean you need to buy a new Laptop if you are happy with what you have. Maybe you should just add some memory. Ps For a Frenchy you write better then I do. Jmarks |
FluffyChicken![]() Send message Joined: 1 Nov 05 Posts: 1260 Credit: 369,635 RAC: 0 |
I would like to take advice on hardware, as it looks like there is some tech freaks over there..... ;) Your confusing FSB with memory data rates. The G4 1.2GHz uses (normally) DDR266 which which is what you're comparing the 333 to they mean DDR333, which still uses a 133MHz FSB. Team mauisun.org |
Francois![]() Send message Joined: 17 Jan 06 Posts: 7 Credit: 975 RAC: 0 |
I would like to take advice on hardware, as it looks like there is some tech freaks over there..... ;) Humm... no i put 333Mhz, but i realized then that it couldnt be. I should have wrote 266Mhz or *2 possibilities. But i thought, well it can figure what i want to know, so i let it like that.... ;). Thanks! |
FluffyChicken![]() Send message Joined: 1 Nov 05 Posts: 1260 Credit: 369,635 RAC: 0 |
I would like to take advice on hardware, as it looks like there is some tech freaks over there..... ;) You will have been correct, DDR266, DDR333 & DDR400 are all valid memory frequencies, but ALL use a 133MHz FSB. (You may know the memory speeds as PC2100, PC2700 & PC3200 respectively), they are just 'pumped' versions. Team mauisun.org |
Francois![]() Send message Joined: 17 Jan 06 Posts: 7 Credit: 975 RAC: 0 |
I would like to take advice on hardware, as it looks like there is some tech freaks over there..... ;) Well, correct me if im wrong: i thought the FSB was carrying data from various elements of computer to others, like from memory to CPU. And memory frequency is the fonctional speed of the particular component. So a DDR333 with a 133Mhz FSB is quite useless... Am i wrong? |
DJStarfox Send message Joined: 19 Jul 07 Posts: 145 Credit: 1,250,162 RAC: 0 |
You will have been correct, DDR266, DDR333 & DDR400 are all valid memory frequencies, but ALL use a 133MHz FSB. (You may know the memory speeds as PC2100, PC2700 & PC3200 respectively), they are just 'pumped' versions. No, you are quite wrong. Here's the maximum FSB speed supported by each memory type: PC1800 FSB 100 MHz PC2100 FSB 133 MHz PC2700 FSB 166 MHz PC3200 FSB 200 MHz All DDR memory types are capable of downgrading their speed if put into a slower motherboard/CPU configuration. The slowest component (motherboard, CPU, or RAM) in a system controls the FSB speed so all components work together. |
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Number crunching :
CPU Comparison question
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