My not-very-authoritative but also obvious answer is that multiple cores will give you better performance. I have good results running Gazebo + rviz on a Core 2 Quad desktop (4 core @ 3GHz, no hyperthreading) and also running it on a laptop with Core i7 (4 cores @ 1.6Ghz + 4 virtual cores). I haven't studied this carefully, but I have noticed that my gazebo simulation runs faster on the C2Q as long as not much else is going on, presumably because of the higher clock speed, but as soon as I start running a lot of other processing the net speed is better on my i7 machine with the virtual cores, despite the lower clock.
Hello everybody,When I run Gazebo and rviz on my Athlon 64 3500 (one core) 5 year old machine running Kubuntu Lucid 32-bit,the cturtle looks more like a c-snail. With CPU at 100% all the time, I see updates in rviz about every 5 seconds.So it takes about 30 minutes to get across a hall of WG.Which is not that much fun, and now I'm looking at the ways to improve this situation:a) Upgrade processor to dual-core AMD Athlon 64 X2 (dual core) and install 64-bit Linux.b) Run Gazebo on another machinec) Get a new AMD Phenom II X6 (six cores) machined) Try to mess with performance of Gazebo as outlined by John here: http://ros-users.122217.n3.nabble.com/cpu-usage-of-Gazebo-td911241.html#a913849I searched this list for AMD/Athlon and did not find much.I'm guessing that's because WG uses Intel Quad Core i7 Xeon processors.What would you guys recommend?I understand it's hard to recommend PC hardware, but I'm asking here to get a feel of what would be a good solution that will get me going with ROS for another couple of years.So far my impression is ROS is highly multi-process system and probably going to get even more so in the near future. Thus I was looking for a CPU with more cores. Am I going in the right direction?Thank you for your time,Alex
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