Re: OT: Cadillac Cue Infotainment System
Turns out the processor executes 1.2 billion instructions per second, 400 million per core. Still not a whirlwind I would guess, but better than the number I quoted. Apparently, it's one of the most powerful -- and perhaps the most powerful -- for an automotive infotainment system. There will be a development kit abd app store, but Cadillac will approve all apps. Paul On Feb 9, 2012, at 3:26 PM, John Francis wrote: On Thu, Feb 09, 2012 at 01:09:02PM -0700, steve harley wrote: my laptop does about 100,000 mips (without considering the GPU) Are you sure you didn't add an order of magnitude there? A quad-core, 3GHz processor has 12,000M core-cycles a second. I find it hard to believe that even modern processors dispatch 8 instructions per cycle in a single core. Mind you, your main point - that a 400MHz processor is a bit underpowered - is spot-on. My new cellphone, for example, has a two-core, 1GHz processor. That's about 5x what Paul quoted for the in-car entertainment system. But the car system also controls more important functions (keyless entry, for one), so it has to be significantly more robust than one used in a phone, where the worst that can happen would be a dropped call. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: OT: Cadillac Cue Infotainment System
on 2012-02-09 11:59 Paul Stenquist wrote I'm off to GM tomorrow for a demo of the Cadillac Cue information and entertainment system that will be available later this year on ATS and XTS. Since the list is rife with programers, computer scientists and the like, I thought it might be of interest. I'll know more tomorrow, but so far I've learned that the system uses the Linux OS and is equipped with an ARM 11 3-core processor. The processor is capable of 400 million instructions (mips) per second. Is that substantial? Cadillac claims it's 3.5 times more powerful than any other automotive infotainment system. They've gone with open platform software because they want developers to write applications for it. Other details I'm aware of include proximity sensing for switching on and off, speech recognition, and the capacity to link to as many as ten blue-tooth or USB devices. most impressive if it's truly an open system, which would imply you can load your own apps, even replace the OS ... my impression is most car systems are woefully underpowered; this one may be a major step up, but it's no whirlwind ... mips (a measure of scalar operation rate) is not be the best measure of an infotainment system whose user experience is heavily dependent on graphics processing, but just for comparison i understand some of the faster tablets do something on the order of 1000 mips, and my laptop does about 100,000 mips (without considering the GPU performance); considering that tablets are optimized for battery life, something built into a car should not be nearly so constrained -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: OT: Cadillac Cue Infotainment System
Sounds like an extraordinary system for those interested in odometer tampering. Darren Addy Kearney, Nebraska -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: OT: Cadillac Cue Infotainment System
On Thu, Feb 09, 2012 at 01:09:02PM -0700, steve harley wrote: my laptop does about 100,000 mips (without considering the GPU) Are you sure you didn't add an order of magnitude there? A quad-core, 3GHz processor has 12,000M core-cycles a second. I find it hard to believe that even modern processors dispatch 8 instructions per cycle in a single core. Mind you, your main point - that a 400MHz processor is a bit underpowered - is spot-on. My new cellphone, for example, has a two-core, 1GHz processor. That's about 5x what Paul quoted for the in-car entertainment system. But the car system also controls more important functions (keyless entry, for one), so it has to be significantly more robust than one used in a phone, where the worst that can happen would be a dropped call. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: OT: Cadillac Cue Infotainment System
on 2012-02-09 13:26 John Francis wrote On Thu, Feb 09, 2012 at 01:09:02PM -0700, steve harley wrote: my laptop does about 100,000 mips (without considering the GPU) Are you sure you didn't add an order of magnitude there? yes, i'm sure; it's a quad i7 (2820QM); i took my numbers from here: http://www.notebookcheck.net/Intel-Core-i7-2820QM-Notebook-Processor.40112.0.html this article doesn't have my exact CPU but does have some useful comparisons, including the ARM11 and a few i7s: http://en.wikipedia.org/wiki/Million_instructions_per_second#Million_instructions_per_second Mind you, your main point - that a 400MHz processor is a bit underpowered - is spot-on. My new cellphone, for example, has a two-core, 1GHz processor. That's about 5x what Paul quoted for the in-car entertainment system. But the car system also controls more important functions (keyless entry, for one), so it has to be significantly more robust than one used in a phone, where the worst that can happen would be a dropped call. if i were making cars, i wouldn't have the infotainment system run any critical functions -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: OT: Cadillac Cue Infotainment System
On Feb 9, 2012, at 3:50 PM, steve harley wrote: on 2012-02-09 13:26 John Francis wrote On Thu, Feb 09, 2012 at 01:09:02PM -0700, steve harley wrote: my laptop does about 100,000 mips (without considering the GPU) Are you sure you didn't add an order of magnitude there? yes, i'm sure; it's a quad i7 (2820QM); i took my numbers from here: http://www.notebookcheck.net/Intel-Core-i7-2820QM-Notebook-Processor.40112.0.html this article doesn't have my exact CPU but does have some useful comparisons, including the ARM11 and a few i7s: http://en.wikipedia.org/wiki/Million_instructions_per_second#Million_instructions_per_second Mind you, your main point - that a 400MHz processor is a bit underpowered - is spot-on. My new cellphone, for example, has a two-core, 1GHz processor. That's about 5x what Paul quoted for the in-car entertainment system. But the car system also controls more important functions (keyless entry, for one), so it has to be significantly more robust than one used in a phone, where the worst that can happen would be a dropped call. if i were making cars, i wouldn't have the infotainment system run any critical functions I know it operates the engine monitoring gauges. I doubt that it's involved with door locks. It's definitely not linked to the engine or powertrain control computers for anything other than some read-only information. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: OT: Cadillac Cue Infotainment System
On 2012-02-09 15:26, John Francis wrote: the car system also controls more important functions (keyless entry, for one), so it has to be significantly more robust than one used in a phone, where the worst that can happen would be a dropped call. There's no way on God's little green earth that an auto manufacturer is going to open up any part of the system that could compromise vehicle and occupant safety, beyond the effects of distraction, which is serious enough by itself. So if they're going for open on the infotainment system, you can bet your bottom dollar it can't directly affect the safety and performance of the engine, trans, brake, etc. -- Doug Lefty Franklin NutDriver Racing http://NutDriver.org Facebook NutDriver Racing Sponsored by Murphy -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
