| Index | Recent Threads | Unanswered Threads | Who's Active | Guidelines | Search |
 |
World Community Grid Forums
Category: Community
Forum: Chat Room
Thread: Can you do more with less? 134.5 Floating Point MIPS/W.... still tweaking |
| No member browsing this thread |
|
Thread Status: Active Total posts in this thread: 158
|
|
| Author |
|
|
David Autumns
Ace Cruncher UK Joined: Nov 16, 2004 Post Count: 11062 Status: Offline Project Badges: 
|
kateiacy - still waiting for my raspberry pi - it should have it's CE Mark soon.
---------------------------------------- |
||
|
|
ryan222h
Senior Cruncher Joined: Sep 4, 2006 Post Count: 425 Status: Offline |
I finally went Bulldozer and all I can say is that it has had a bad press It's matching the Phenom II clock for clock and you get a whole load more of them On paper the 125W TDP FX8150 does not look like one of the greenest CPU's available It's still in the bedding in/tweaking phase and is living on one memory stick borrowed from the lean green crunching machine so it's a bit hemmed in at the mo. The 6 cores of the 95W version of the Phenom II makes 15.83W/core The 8 cores of the 125W FX8150 makes 15.63 W/core so just a slight edge ..throw in the fact that each core is crunching at 1.4 * the rate of the Phenom II cores...and bingo There's the difference  65W Phenom II 905E =10Ghz 153.85Mhz/W (tdp) 95W Phenom II 1055T = 18Ghz (Cores OC'ed to 3Ghz) 189.47Mhz/W (tdp) 125W FX8150 = 33.8Ghz (Cores OC'ed to 4.2Ghz) 270.4Mhz/W (tdp) That's over a 75% increase in number crunching power per watt since this thread kicked off less than 2 years ago  I'll get back to you  I think my 134.5 Floating Point MIPS per Watt at the socket will be threatened (On the GPU front I've followed the same principles - time will tell) You forgot to take into account the power increase that you will see once overclocked to 4.2ghz...your 125 watt tdp cpu just became a 200+ watt CPU once overclocked. Did you measure the FX at the wall socket overclocked? Would be interested to see those numbers.  |
||
|
|
kateiacy
Veteran Cruncher USA Joined: Jan 23, 2010 Post Count: 1027 Status: Offline Project Badges:
|
kateiacy - still waiting for my raspberry pi - it should have it's CE Mark soon. Great! :) I haven't visited their site in over month -- a bit chaotic around here during and after my husband's heart surgery. Things are going MUCH better now, so I'll check back in. As someone who got her start in computing with a Sinclair ZX-81, I can't wait to get my hands on a Raspberry Pi!  |
||
|
|
David Autumns
Ace Cruncher UK Joined: Nov 16, 2004 Post Count: 11062 Status: Offline Project Badges:
|
ryan222h
----------------------------------------I'll get back to you Because the 8 Core FX8150 is 4 dual cores I'm reviewing how this maps onto the Benchmarking which I am fairly sure is single threaded. It's currently strapped for memory bandwidth operating on just one stick (You have to get your cruncher crunching asap) when I have it tweaked I'll let you know on the MIPS/W score with the Watts taken at the Socket It's spitting out WU's in line with the clock rate of the Phenom II so it's design doesn't appear to impact performance. Their run times are proportionally shorter. I think the Bulldozer has suffered a bad press. It looks great on the WCG. It's currently running on XUbuntu 11.10 on a dodgy old 2.5" drive rescued from a defunct laptop .... needs must. It's adding ~36,000 WCG points a day in it's current configuration -- kateiacy glad to hear your husband is on the mend We must be from the same era didn't the ZX81 arrive shortly after the Pliocene, or was it just before, my memory is beginning to fail me Hopefully a new generation of computer programmers - instead of MS Office Users - will be the result. Ah the joys of for next and gosub Dave |
||
|
|
David Autumns
Ace Cruncher UK Joined: Nov 16, 2004 Post Count: 11062 Status: Offline Project Badges:
|
Still not ready to report on the Bulldozers efficiency as yet
----------------------------------------Still saving for the extra memory sticks so it can enjoy the additional bandwidth of the dual memory controllers Give me a couple of weeks Dave |
||
|
|
kateiacy
Veteran Cruncher USA Joined: Jan 23, 2010 Post Count: 1027 Status: Offline Project Badges:
|
Looking ahead to AMD's 3rd-generation APU -- at least 1 teraflops of compute power.
----------------------------------------http://www.legitreviews.com/news/13398/ |
||
|
|
David Autumns
Ace Cruncher UK Joined: Nov 16, 2004 Post Count: 11062 Status: Offline Project Badges:
|
The Raspberry Pi turned up today
----------------------------------------Having trouble with getting it to recognise the SD card Should have looked here first http://elinux.org/RPi_VerifiedPeripherals Close.. I have seen it begin the boot process only to have a Kernel Panic. This is going to take the same amount of patience as working with the old ZX81. Tomorrow one of the TDK's on the the compatible list  Dave |
||
|
|
David Autumns
Ace Cruncher UK Joined: Nov 16, 2004 Post Count: 11062 Status: Offline Project Badges:
|
Well here I am typing in the land of Raspbery Pi
----------------------------------------It's not as slick as a 8 Core Megacruncher but then it cost less than 30 UK pounds including the T-Shirt ! - I need to get the correct keyboard mapping set up :-) - and uses less power than a USB port can supply (the HTC micro usb charger I am using to power it is rated for 5W) I have Fedora V14 on here and I can see that Fedora 17 ARM is in general release - so that's another download I need to start But it works and I can see all this in Firefox which when all said and done is astounding ...the possibilities Dave |
||
|
|
kateiacy
Veteran Cruncher USA Joined: Jan 23, 2010 Post Count: 1027 Status: Offline Project Badges:
|
Well here I am typing in the land of Raspbery Pi ... But it works and I can see all this in Firefox which when all said and done is astounding ...the possibilities Dave Very cool! Keep us posted as you do more with it! |
||
|
|
David Autumns
Ace Cruncher UK Joined: Nov 16, 2004 Post Count: 11062 Status: Offline Project Badges:
|
Will do
---------------------------------------- I discovered the wonderfully titled Redsleeve (for ARM.. as opposed to your head) last night. Compared with the other Distros for Raspberry Pi this seems the most responsive and capable. No flash as yet so it's not the answer at the mo for v cheap browsing but I am keen to know what I might be able to control/observe via it's GPIO pins A "PC" cheaper than a DVD drive and smaller than the fan on the FX-8150 that takes next to no power. It doesn't really need a box the pcb is fairly sturdy and it's the HDMI cable that decides which orientation it sits at There's an intriguing eco system that is beginning to build around it. incidentally there is a socket for a future LCD display and another for a camera interface.... Dave |
||
|
|
|