Hi Ralph, that is actually pretty great news to me! This sounds like we should maybe be pushing for VMWare appliance images for things like workshops. Thanks!
Marcus On Wed, 2018-02-21 at 10:51 +0100, Ralph A. Schmid, dk5ras wrote: > About the discussion pro and con VM, my experiences with VMware are > quite good. I am using gnuradio on a Micosoft Surface pro 3, Win 10, > i7-CPU, 8GB RAM, using Kubuntu 16.04 in the VM. Gnuradio and uhd are > always built from sources, from master branches. When Windows has no > other open application running and the focus stays on the VM, it runs > quite smooth, and openLTE with 5 MHz bandwidth works so far good, > also transmitting DVB-T with gnuradio is possible. The used radio is > an Ettus B210, connected with USB3. > > The main reason for my choice is mobility, need this stuff being > available when traveling :) Dual boot on the surface was at least a > few years ago a PITA, and MS tended to kill the bootloader with > updates. Don't know it this is better nowadays. > > Ralph, dk5ras. > > > -----Original Message----- > > From: Discuss-gnuradio [mailto:discuss-gnuradio- > > [email protected]] On Behalf Of Müller, Marcus (CEL) > > Sent: Tuesday, February 20, 2018 3:36 PM > > To: [email protected]; [email protected] > > Subject: Re: [Discuss-gnuradio] Performance Issues > > > > Hello Tellrell, > > > > first observation: Step away from Ubuntu 14.04, if possible. Its > > compilers aren't > > really as cool as they could be (there's been a lot of performance > > improvement > > in both GCC and Clang in the last four years), and you do care > > about > > performance. > > Also, Ubuntu 14.04 won't be around for much longer, so if this is a > > new > > application, switching to the next LTS is probably a good idea (by > > the way, I've > > not been able to find significant performance regressions in > > simulation-only > > GNU Radio flow graphs due to KPTI fixes, i.e. meltdown fixes). > > > > Then: Virtualizers are getting better every day; whether that makes > > them the > > best choice for SDR is something that I can't generally answer. > > Fact is that USB3 > > handthrough to VMs is known to be rather flaky, so if you're using > > a USRP B2xx, > > then native is most likely the way to go. > > If you're using a high-end network card, and a good hypervisor, > > chances are > > you can actually have a virtualized dedicated network card in the > > VM (if that is > > the case, you probably know yourself, because you'd have configured > > your VM > > to be "owner" of part of your network card). > > > > What you should most definitely not do is have a "NAT" networking > > solution > > between your VM and your Host – that way, every UDP packet for a > > network- > > attached USRP would have to go through a packet analyzer/rewriter, > > and that's > > going to eat CPU. > > > > I don't know what your CustomBlock does, but if it not a > > hier_blopck, Python is > > really not the thing you want for highest performance. Also, to > > avoid the > > vec2stream, make your block consume vectors instead of single > > samples; the > > complex_to_magnitude_squared block can be configured to directly > > work on > > vectors, too! > > > > Generally, you'll find that most guys on here are happy running a > > modern Linux > > on their machines. Setting up a Fedora 27 that boots alternatively > > to the pre- > > installed windows took about 15 minutes on my new laptop, but it's > > definitely > > not the first installation of that I did, so calculate let's say 30 > > minutes. That's > > actually something that you might just want to try out. After that, > > it was really > > just a matter of "sudo dnf update -y; dnf install -y gnuradio" to > > be up and > > running a halfway recent GNU Radio. On debian unstable or testing, > > you'd get > > something even more recent. > > > > Best regards, > > Marcus > > > > On Tue, 2018-02-20 at 08:48 -0500, Tellrell White wrote: > > > Hello Guys > > > Currently I'm running a flow graph that looks like the following: > > > > > > UHD Source -> Stream2Vec -> FFT -> Vec2Stream -> Com2Mag^2 -> > > > CustomBlock(Python) > > > > > > I'm running this block inside of a virtual machine running ubuntu > > > 14.04 LTS. > > > > The host machine runs Windows with an Intel Core i7-4700 MQ > > processor > > running at 2.4GHZ with 8GB of RAM. > > > > > > Running the flow graph shown above in the VM is a struggle > > > resulting in > > > > freezing after a few seconds so my question is would it better to > > go another > > route for performance, either, by installing UHD and Gnu Radio on > > the host > > machine running windows or using another machine and dual booting > > and > > installing linux, GNU Radio, and UHD for this application? > > > > > > Regards > > > Tellrell White > > > _______________________________________________ > > > Discuss-gnuradio mailing list > > > [email protected] > > > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > > > _______________________________________________ > Discuss-gnuradio mailing list > [email protected] > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
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