Hi Vijay, maybe I can help you with more information. You can't get any more accurate numbers for the power dissipation and unfortunately currently there's no way to disable parts of the IXP425. thanks, Sebastian -----Original Message----- From: Vijay Lakamraju [mailto:vlakamra@ecs.umass.edu] Sent: 06 May 2003 14:35 To: ixp1200@CS.Princeton.EDU Subject: RE: [ixp1200] IXP4XX datasheets/developers manual maybe I wasnt able to discern properly the location of the IXP4XX datasheets. But all that I had found earlier was a white paper on the IXP425. Well, what I am hoping to get from the datasheets are real power dissipation numbers. While the product brief just simply says "1.0 to 1.5 Watt typical", I was wondering what would be the dissipation if the XScale or the whole chip was clocked slower. Moreover, is there a way to clock gate or switch off any of the Ethernet NPEs? Any info on this would be helpful. Thanks Vijay -- On Tue, 6 May 2003, Jimmy Brian Christanthio wrote:
http://www.intel.com/design/network/products/npfamily/index.htm
-----Original Message----- From: owner-ixp1200@CS.Princeton.EDU [mailto:owner-ixp1200@CS.Princeton.EDU] On Behalf Of Vijay Lakamraju Sent: Tuesday, May 06, 2003 1:46 AM To: ixp1200@CS.Princeton.EDU Subject: [ixp1200] IXP4XX datasheets/developers manual
Hi, I was wondering if anyone have access to the IXP4XX processor datasheets and the developers manual. I know this request might not be the most appropriate for this mailing list but just thot I would try. I have tried contacting the Intel tech support for this but it was in vain.
Thanks for any help, Vijay -- Post-Doctoral Research Associate, Architecture & Real-time Systems (ARTS) Lab, 310 Knowles Engineering Bldg, University of Massachusetts, Amherst MA 01003 http://www.ecs.umass.edu/ece/realtime/ http://arts.ecs.umass.edu/~vlakamra/
Hi, Will the power consumption still be the same even if the NPEs are held in reset ? Kamesh. -----Original Message----- From: owner-ixp1200@CS.Princeton.EDU [mailto:owner-ixp1200@CS.Princeton.EDU]On Behalf Of Richter, Sebastian Sent: Tuesday, May 06, 2003 9:41 AM To: ixp1200@CS.Princeton.EDU Subject: RE: [ixp1200] IXP4XX datasheets/developers manual Hi Vijay, maybe I can help you with more information. You can't get any more accurate numbers for the power dissipation and unfortunately currently there's no way to disable parts of the IXP425. thanks, Sebastian -----Original Message----- From: Vijay Lakamraju [mailto:vlakamra@ecs.umass.edu] Sent: 06 May 2003 14:35 To: ixp1200@CS.Princeton.EDU Subject: RE: [ixp1200] IXP4XX datasheets/developers manual maybe I wasnt able to discern properly the location of the IXP4XX datasheets. But all that I had found earlier was a white paper on the IXP425. Well, what I am hoping to get from the datasheets are real power dissipation numbers. While the product brief just simply says "1.0 to 1.5 Watt typical", I was wondering what would be the dissipation if the XScale or the whole chip was clocked slower. Moreover, is there a way to clock gate or switch off any of the Ethernet NPEs? Any info on this would be helpful. Thanks Vijay -- On Tue, 6 May 2003, Jimmy Brian Christanthio wrote:
http://www.intel.com/design/network/products/npfamily/index.htm
-----Original Message----- From: owner-ixp1200@CS.Princeton.EDU [mailto:owner-ixp1200@CS.Princeton.EDU] On Behalf Of Vijay Lakamraju Sent: Tuesday, May 06, 2003 1:46 AM To: ixp1200@CS.Princeton.EDU Subject: [ixp1200] IXP4XX datasheets/developers manual
Hi, I was wondering if anyone have access to the IXP4XX processor datasheets and the developers manual. I know this request might not be the most appropriate for this mailing list but just thot I would try. I have tried contacting the Intel tech support for this but it was in vain.
Thanks for any help, Vijay -- Post-Doctoral Research Associate, Architecture & Real-time Systems (ARTS) Lab, 310 Knowles Engineering Bldg, University of Massachusetts, Amherst MA 01003 http://www.ecs.umass.edu/ece/realtime/ http://arts.ecs.umass.edu/~vlakamra/
Hi Sebastian, Thanks for the input. Well, basically, we have been trying to make a case for the use of IXPs in some application which require good performance but are low on the power budget. The IXP1200's 3.5-5.0 Watt seems to be a bit too much for the system that we are considering. So, we have tried to consider the IXP425 but I just felt there was room for further power saving by switching off one of the NPEs which might not be needed. I hope I am not wrong in surmising that the microengines of the IXP1200 and the NPEs of the IXP425 are structurally quite the same. Looking at the IXP1200, it seems like the microengines are the real power hungry components. The StrongARM consumes less than 100mW and the rest of the components (memory interfaces, PCI unit and FBI unit) *might* not be consuming more than 1 W. So, does this mean that each of the microengines consumes around 0.5 W during normal operation? And, considering that there is no way to switch off individual microengines, how much lesser power might a microengine consume if it were not running any code (or put in reset mode)?? Thanks for any help, Vijay -- Post-Doctoral Research Associate, Architecture & Real-time Systems (ARTS) Lab, 310 Knowles Engineering Bldg, University of Massachusetts, Amherst MA 01003 Tel: (413)-545-0715 (O) http://arts.ecs.umass.edu/~vlakamra/ On Tue, 6 May 2003, Richter, Sebastian wrote:
Hi Vijay,
maybe I can help you with more information. You can't get any more accurate numbers for the power dissipation and unfortunately currently there's no way to disable parts of the IXP425.
thanks,
Sebastian
-----Original Message----- From: Vijay Lakamraju [mailto:vlakamra@ecs.umass.edu] Sent: 06 May 2003 14:35 To: ixp1200@CS.Princeton.EDU Subject: RE: [ixp1200] IXP4XX datasheets/developers manual
maybe I wasnt able to discern properly the location of the IXP4XX datasheets. But all that I had found earlier was a white paper on the IXP425.
Well, what I am hoping to get from the datasheets are real power dissipation numbers. While the product brief just simply says "1.0 to 1.5 Watt typical", I was wondering what would be the dissipation if the XScale or the whole chip was clocked slower. Moreover, is there a way to clock gate or switch off any of the Ethernet NPEs?
Any info on this would be helpful. Thanks Vijay --
On Tue, 6 May 2003, Jimmy Brian Christanthio wrote:
http://www.intel.com/design/network/products/npfamily/index.htm
-----Original Message----- From: owner-ixp1200@CS.Princeton.EDU [mailto:owner-ixp1200@CS.Princeton.EDU] On Behalf Of Vijay Lakamraju Sent: Tuesday, May 06, 2003 1:46 AM To: ixp1200@CS.Princeton.EDU Subject: [ixp1200] IXP4XX datasheets/developers manual
Hi, I was wondering if anyone have access to the IXP4XX processor datasheets and the developers manual. I know this request might not be the most appropriate for this mailing list but just thot I would try. I have tried contacting the Intel tech support for this but it was in vain.
Thanks for any help, Vijay -- Post-Doctoral Research Associate, Architecture & Real-time Systems (ARTS) Lab, 310 Knowles Engineering Bldg, University of Massachusetts, Amherst MA 01003 http://www.ecs.umass.edu/ece/realtime/ http://arts.ecs.umass.edu/~vlakamra/
participants (3)
-
Richter, Sebastian -
Venkata Avasarala -
Vijay Lakamraju