Re: FVP model + processors
On 5 February 2014 08:15, Christopher Covington wrote: > On 02/05/2014 11:04 AM, Tom Gall wrote: >> Hi Chris, All, >> >> So how does one run uniprocessor? >> >> If I set cluster1.NUM_CORES=0 >> >> the model will fail on startup with : >> >> error in parameter 'cluster1.NUM_CORES' specification: value is out of range >> >> If I remove it then I get one processor on cluster 0 and 4 processors >> on cluster 1! > > I do not know how to run uniprocessor on the Base model. I meant to suggest > that you could potentially use a different model, such as the FVP_VE_AEMv8A > (something of a precursor to the FVP_Base_AEMv8A_AEMv8A as I understand it) or > Foundation_v8 as a work-around. I had somewhat similar problem but from other angle: in DS-5 for V8 I could connect only to one cluster at the time, so to do any meaningful Linux kernel debugging I had to make sure that kernel runs only on one cluster. As it was discussed on this thread I could not do anything with model command line options to disable second cluster. I ended up to setting 'maxcores=4' in Linux kernel cmd line (had to change such default in uefi and rebuild uefi). That worked for me - kernel runs only on the first cluster after that. Tom, you could try to do 'maxcores=1' or 'maxcores=0' that would restrict kernel to run one CPU of one cluster, but I am not sure that it will really help fastmodels from speed point of view. Thanks, Victor > Christopher > >> On Tue, Feb 4, 2014 at 2:05 PM, Christopher Covington >> wrote: >>> On 02/04/2014 02:54 PM, Tom Gall wrote: Hi All, Does anyone know of a way to go down to just one processor running the armv8 FVP model? This gets it down to 2 but this seems to be the minimum. -C cluster0.NUM_CORES=1 \ -C cluster1.NUM_CORES=1 \ >>> >>> The VE model variant can do uniprocessor, and I would expect Foundation to >>> as >>> well. >>> >>> Christopher > > -- > Employee of Qualcomm Innovation Center, Inc. > Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, > hosted by the Linux Foundation. > > ___ > linaro-dev mailing list > linaro-dev@lists.linaro.org > http://lists.linaro.org/mailman/listinfo/linaro-dev ___ linaro-dev mailing list linaro-dev@lists.linaro.org http://lists.linaro.org/mailman/listinfo/linaro-dev
Re: FVP model + processors
On 02/05/2014 11:04 AM, Tom Gall wrote: > Hi Chris, All, > > So how does one run uniprocessor? > > If I set cluster1.NUM_CORES=0 > > the model will fail on startup with : > > error in parameter 'cluster1.NUM_CORES' specification: value is out of range > > If I remove it then I get one processor on cluster 0 and 4 processors > on cluster 1! I do not know how to run uniprocessor on the Base model. I meant to suggest that you could potentially use a different model, such as the FVP_VE_AEMv8A (something of a precursor to the FVP_Base_AEMv8A_AEMv8A as I understand it) or Foundation_v8 as a work-around. Christopher > On Tue, Feb 4, 2014 at 2:05 PM, Christopher Covington > wrote: >> On 02/04/2014 02:54 PM, Tom Gall wrote: >>> Hi All, >>> >>> Does anyone know of a way to go down to just one processor running the >>> armv8 FVP model? >>> >>> This gets it down to 2 but this seems to be the minimum. >>> >>> -C cluster0.NUM_CORES=1 \ >>> -C cluster1.NUM_CORES=1 \ >> >> The VE model variant can do uniprocessor, and I would expect Foundation to as >> well. >> >> Christopher -- Employee of Qualcomm Innovation Center, Inc. Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by the Linux Foundation. ___ linaro-dev mailing list linaro-dev@lists.linaro.org http://lists.linaro.org/mailman/listinfo/linaro-dev
Re: FVP model + processors
Hi Chris, All, So how does one run uniprocessor? If I set cluster1.NUM_CORES=0 the model will fail on startup with : error in parameter 'cluster1.NUM_CORES' specification: value is out of range If I remove it then I get one processor on cluster 0 and 4 processors on cluster 1! Thanks, Tom On Tue, Feb 4, 2014 at 2:05 PM, Christopher Covington wrote: > On 02/04/2014 02:54 PM, Tom Gall wrote: >> Hi All, >> >> Does anyone know of a way to go down to just one processor running the >> armv8 FVP model? >> >> This gets it down to 2 but this seems to be the minimum. >> >> -C cluster0.NUM_CORES=1 \ >> -C cluster1.NUM_CORES=1 \ > > The VE model variant can do uniprocessor, and I would expect Foundation to as > well. > > Christopher > > -- > Employee of Qualcomm Innovation Center, Inc. > Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, > hosted by the Linux Foundation. -- Regards, Tom "Where's the kaboom!? There was supposed to be an earth-shattering kaboom!" Marvin Martian Tech Lead, Graphics Working Group | Linaro.org │ Open source software for ARM SoCs w) tom.gall att linaro.org h) tom_gall att mac.com ___ linaro-dev mailing list linaro-dev@lists.linaro.org http://lists.linaro.org/mailman/listinfo/linaro-dev
Re: FVP model + processors
On 02/04/2014 02:54 PM, Tom Gall wrote: > Hi All, > > Does anyone know of a way to go down to just one processor running the > armv8 FVP model? > > This gets it down to 2 but this seems to be the minimum. > > -C cluster0.NUM_CORES=1 \ > -C cluster1.NUM_CORES=1 \ The VE model variant can do uniprocessor, and I would expect Foundation to as well. Christopher -- Employee of Qualcomm Innovation Center, Inc. Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by the Linux Foundation. ___ linaro-dev mailing list linaro-dev@lists.linaro.org http://lists.linaro.org/mailman/listinfo/linaro-dev
FVP model + processors
Hi All, Does anyone know of a way to go down to just one processor running the armv8 FVP model? This gets it down to 2 but this seems to be the minimum. -C cluster0.NUM_CORES=1 \ -C cluster1.NUM_CORES=1 \ Trying to come up with ways to get a little more speed out the model. Thanks! -- Regards, Tom "Where's the kaboom!? There was supposed to be an earth-shattering kaboom!" Marvin Martian Tech Lead, Graphics Working Group | Linaro.org │ Open source software for ARM SoCs w) tom.gall att linaro.org h) tom_gall att mac.com ___ linaro-dev mailing list linaro-dev@lists.linaro.org http://lists.linaro.org/mailman/listinfo/linaro-dev
