Les Cargill <lcargill99@comcast.com> writes:> Tim Wescott wrote: >> On Wed, 21 Aug 2013 14:08:46 -0400, Randy Yates wrote: >> >>> Tim Wescott <tim@seemywebsite.really> writes: >>> >>>> On Tue, 20 Aug 2013 23:54:32 -0500, bradsdr wrote: >>>> >>>>> Hi experts, >>>>> >>>>> I am in search of a good RTOS embedded predecessor that can run Linux. >>>>> I want to use it for my communication system. It should be capable of >>>>> doing all DSP/communication tasks. Specs could be like or better: >>>>> >>>>> * Embedded RTOS * 16 Gb RAB * 10 Gbps LAN * 8 cores * USB interface >>>>> >>>>> Please share the devices you think are best match. Or anything that >>>>> will behave better on this. >>>> >>>> First, I assume you mean "RTOS embedded processor that can run Linux", >>>> not "... predecessor ..." (#@$% spell checkers!). >>>> >>>> Second, if you do mean that, it makes no sense. The "OS" in "RTOS" >>>> stands for "operating system". Linux is an operating system. It's not >>>> the processor that makes it "RTOS" -- it's the OS. And Linux, by >>>> itself, >>>> ain't real-time. >>>> >>>> Do a web search on "real time Linux", and look for recent articles. >>>> There are various Linuxes (Linii?) with various grades of "real- >>>> timishness". What grade you need, or whether you really need real-time >>>> performance, depends on your problem. >>> >>> Agreed. I'm not an expert on linux, but if you need true real-time and >>> you're pushing your resources, I'd go with something like TI's SYSBIOS >>> (formerly DSPBIOS). >>> >>> Also, I found out much of linux's base OS functions are not very >>> well-organized, as opposed to something like SYSBIOS which was put >>> together from the ground up. >> >> The last time I really paid attention to this was about five years ago. >> At that point, the most successful implementations of really hard real- >> time Linux put the Linux kernel running as a task of a real-time OS. >> >> That meant that all the real-time stuff had to be written for the real- >> time OS, and you had to accept that any communications to the Linux side >> weren't really real time. >> >> This worked OK, because most times when you have a processor doing "real >> time", there's very little that's actually hard real time, and it's >> generally not data intensive. >> > > I've found pthreads and hardware timers useful. This may need a driver; > you call an ioctl() to block and return when the timer fires.Yeah, I'm not sure this is going to help with real-time. But by the way, here is a ton of very useful info on posix threads stuff: https://computing.llnl.gov/tutorials/pthreads/ -- Randy Yates Digital Signal Labs http://www.digitalsignallabs.com
High speed system
Started by ●August 21, 2013
Reply by ●August 22, 20132013-08-22
Reply by ●August 22, 20132013-08-22
>On Tue, 20 Aug 2013 23:54:32 -0500, "bradsdr" <95105@dsprelated> >wrote: > >>Hi experts, >> >>I am in search of a good RTOS embedded predecessor that can run Linux. I >>want to use it for my communication system. It should be capable ofdoing>>all DSP/communication tasks. Specs could be like or better: >> >>* Embedded RTOS >>* 16 Gb RAB >>* 10 Gbps LAN >>* 8 cores >>* USB interface >> >>Please share the devices you think are best match. Or anything that will >>behave better on this. > >A high-end PC running something like FreeRTOS meets all of your stated >requirements. > >If you mean something else, then you need to clarify your >requirements. > > >Eric Jacobsen >Anchor Hill Communications >http://www.anchorhill.com >Sorry for asking in such way but I do not know much about Embedded systems. Scenario is as under I want to make an embedded system that can run GnuRadio "http://gnuradio.org/redmine/projects/gnuradio/wiki" on it with ETTUS USRP "https://www.ettus.com/product/details/UN210-KIT". But system should have 10Gbps ethernet ports, and a PCIe slot as well. I want the best system so that I can use any upcoming hardware from ettus as well. GnuRadio works best on Linux. The picture that comes to my mind is that I need a processor that can run Linux well, in real time. I said "RTOS" because I want to run communication systems in real time. Also I want to have 10Gbps ethernet port and PCIe slot. So, I need to replace my current system which is as under Processor: Inte Core i7-2600 CPU @ 3.40GHz × 8 Memory; 4 GiB Linux Ubuntu 12.04 LTS with an embedded system with more RAM, 10Gbps ehternet and PCIe. Please guide me. Thanks for helping and time. Regards, Brad _____________________________ Posted through www.DSPRelated.com
Reply by ●August 22, 20132013-08-22
On Thu, 22 Aug 2013 04:50:03 -0500, "bradsdr" <95105@dsprelated> wrote:>>On Tue, 20 Aug 2013 23:54:32 -0500, "bradsdr" <95105@dsprelated> >>wrote: >> >>>Hi experts, >>> >>>I am in search of a good RTOS embedded predecessor that can run Linux. I >>>want to use it for my communication system. It should be capable of >doing >>>all DSP/communication tasks. Specs could be like or better: >>> >>>* Embedded RTOS >>>* 16 Gb RAB >>>* 10 Gbps LAN >>>* 8 cores >>>* USB interface >>> >>>Please share the devices you think are best match. Or anything that will >>>behave better on this. >> >>A high-end PC running something like FreeRTOS meets all of your stated >>requirements. >> >>If you mean something else, then you need to clarify your >>requirements. >> >> >>Eric Jacobsen >>Anchor Hill Communications >>http://www.anchorhill.com >> > > >Sorry for asking in such way but I do not know much about Embedded systems. >Scenario is as under > >I want to make an embedded system that can run GnuRadio >"http://gnuradio.org/redmine/projects/gnuradio/wiki" on it with ETTUS USRP >"https://www.ettus.com/product/details/UN210-KIT". But system should have >10Gbps ethernet ports, and a PCIe slot as well. I want the best system so >that I can use any upcoming hardware from ettus as well. GnuRadio works >best on Linux. > >The picture that comes to my mind is that I need a processor that can run >Linux well, in real time. I said "RTOS" because I want to run communication >systems in real time. Also I want to have 10Gbps ethernet port and PCIe >slot. So, I need to replace my current system which is as under > >Processor: Inte Core i7-2600 CPU @ 3.40GHz × 8 >Memory; 4 GiB >Linux Ubuntu 12.04 LTS > >with an embedded system with more RAM, 10Gbps ehternet and PCIe. Please >guide me. Thanks for helping and time. > >Regards, >BradYou're probably going to have trouble finding an "embedded system" that has 8 cores that isn't, or isn't very close to, a PC board. Likewise your requirement for 16Gb RAM (assuming RAB = RAM). So, a newer PC board with an 8 core processor running Linux could easily meet all your stated requirements, no? Finding something else with 8 cores and 16Gb RAM might be pretty difficult. Eric Jacobsen Anchor Hill Communications http://www.anchorhill.com
Reply by ●August 23, 20132013-08-23
>On Thu, 22 Aug 2013 04:50:03 -0500, "bradsdr" <95105@dsprelated> >wrote: > >>>On Tue, 20 Aug 2013 23:54:32 -0500, "bradsdr" <95105@dsprelated> >>>wrote: >>> >>>>Hi experts, >>>> >>>>I am in search of a good RTOS embedded predecessor that can run Linux.I>>>>want to use it for my communication system. It should be capable of >>doing >>>>all DSP/communication tasks. Specs could be like or better: >>>> >>>>* Embedded RTOS >>>>* 16 Gb RAB >>>>* 10 Gbps LAN >>>>* 8 cores >>>>* USB interface >>>> >>>>Please share the devices you think are best match. Or anything thatwill>>>>behave better on this. >>> >>>A high-end PC running something like FreeRTOS meets all of your stated >>>requirements. >>> >>>If you mean something else, then you need to clarify your >>>requirements. >>> >>> >>>Eric Jacobsen >>>Anchor Hill Communications >>>http://www.anchorhill.com >>> >> >> >>Sorry for asking in such way but I do not know much about Embeddedsystems.>>Scenario is as under >> >>I want to make an embedded system that can run GnuRadio >>"http://gnuradio.org/redmine/projects/gnuradio/wiki" on it with ETTUSUSRP>>"https://www.ettus.com/product/details/UN210-KIT". But system shouldhave>>10Gbps ethernet ports, and a PCIe slot as well. I want the best systemso>>that I can use any upcoming hardware from ettus as well. GnuRadio works >>best on Linux. >> >>The picture that comes to my mind is that I need a processor that canrun>>Linux well, in real time. I said "RTOS" because I want to runcommunication>>systems in real time. Also I want to have 10Gbps ethernet port and PCIe >>slot. So, I need to replace my current system which is as under >> >>Processor: Inte Core i7-2600 CPU @ 3.40GHz × 8 >>Memory; 4 GiB >>Linux Ubuntu 12.04 LTS >> >>with an embedded system with more RAM, 10Gbps ehternet and PCIe. Please >>guide me. Thanks for helping and time. >> >>Regards, >>Brad > >You're probably going to have trouble finding an "embedded system" >that has 8 cores that isn't, or isn't very close to, a PC board. >Likewise your requirement for 16Gb RAM (assuming RAB = RAM). > >So, a newer PC board with an 8 core processor running Linux could >easily meet all your stated requirements, no? > >Finding something else with 8 cores and 16Gb RAM might be pretty >difficult. > > >Eric Jacobsen >Anchor Hill Communications >http://www.anchorhill.com >Thanks for your response. What is the possible that comes to your mind. Regards, Brad _____________________________ Posted through www.DSPRelated.com
Reply by ●August 26, 20132013-08-26
>>On Thu, 22 Aug 2013 04:50:03 -0500, "bradsdr" <95105@dsprelated> >>wrote: >> >>>>On Tue, 20 Aug 2013 23:54:32 -0500, "bradsdr" <95105@dsprelated> >>>>wrote: >>>> >>>>>Hi experts, >>>>> >>>>>I am in search of a good RTOS embedded predecessor that can runLinux.>I >>>>>want to use it for my communication system. It should be capable of >>>doing >>>>>all DSP/communication tasks. Specs could be like or better: >>>>> >>>>>* Embedded RTOS >>>>>* 16 Gb RAB >>>>>* 10 Gbps LAN >>>>>* 8 cores >>>>>* USB interface >>>>> >>>>>Please share the devices you think are best match. Or anything that >will >>>>>behave better on this. >>>> >>>>A high-end PC running something like FreeRTOS meets all of your stated >>>>requirements. >>>> >>>>If you mean something else, then you need to clarify your >>>>requirements. >>>> >>>> >>>>Eric Jacobsen >>>>Anchor Hill Communications >>>>http://www.anchorhill.com >>>> >>> >>> >>>Sorry for asking in such way but I do not know much about Embedded >systems. >>>Scenario is as under >>> >>>I want to make an embedded system that can run GnuRadio >>>"http://gnuradio.org/redmine/projects/gnuradio/wiki" on it with ETTUS >USRP >>>"https://www.ettus.com/product/details/UN210-KIT". But system should >have >>>10Gbps ethernet ports, and a PCIe slot as well. I want the best system >so >>>that I can use any upcoming hardware from ettus as well. GnuRadio works >>>best on Linux. >>> >>>The picture that comes to my mind is that I need a processor that can >run >>>Linux well, in real time. I said "RTOS" because I want to run >communication >>>systems in real time. Also I want to have 10Gbps ethernet port andPCIe>>>slot. So, I need to replace my current system which is as under >>> >>>Processor: Inte Core i7-2600 CPU @ 3.40GHz × 8 >>>Memory; 4 GiB >>>Linux Ubuntu 12.04 LTS >>> >>>with an embedded system with more RAM, 10Gbps ehternet and PCIe. Please >>>guide me. Thanks for helping and time. >>> >>>Regards, >>>Brad >> >>You're probably going to have trouble finding an "embedded system" >>that has 8 cores that isn't, or isn't very close to, a PC board. >>Likewise your requirement for 16Gb RAM (assuming RAB = RAM). >> >>So, a newer PC board with an 8 core processor running Linux could >>easily meet all your stated requirements, no? >> >>Finding something else with 8 cores and 16Gb RAM might be pretty >>difficult. >> >> >>Eric Jacobsen >>Anchor Hill Communications >>http://www.anchorhill.com >> > > >Thanks for your response. What is the possible that comes to your mind. > >Regards, >Brad > >_____________________________ >Posted through www.DSPRelated.com >Can somebody please comment on it. The best possible I can get. Regards, Brad _____________________________ Posted through www.DSPRelated.com
Reply by ●August 26, 20132013-08-26
"bradsdr" <95105@dsprelated> writes:> [...] > Can somebody please comment on it. The best possible I can get. > > Regards, > BradBrad, If you've lived in this world for more than about 5 years, you'll know that there is a tradeoff between what you desire and what you'll have to pay for it. Without any indication of the depth of your pockets, your question is practically meaningless. -- Randy Yates Digital Signal Labs http://www.digitalsignallabs.com
Reply by ●August 26, 20132013-08-26
>"bradsdr" <95105@dsprelated> writes: >> [...] >> Can somebody please comment on it. The best possible I can get. >> >> Regards, >> Brad > >Brad, > >If you've lived in this world for more than about 5 years, you'll know >that there is a tradeoff between what you desire and what you'll have to >pay for it. > >Without any indication of the depth of your pockets, your question is >practically meaningless. >-- >Randy Yates >Digital Signal Labs >http://www.digitalsignallabs.com >Yes, that's right I am new to this world. Anything up to $2000. Regards, Brad _____________________________ Posted through www.DSPRelated.com
