![]() This is an issue for me since I use several libraries that reference all of those to differentiate between raspberry pi versions. See how the world moved from 8-bit CPUs to 16-bit to 32-bit and then to 64-bit CPUs. processor: Intel(R) Core(TM) i7-3740QM CPU 2.A quick cat of /proc/cpuinfo shows that there are no references to hardware, model name or revision the way that there is in Raspian.(See below for sample processor output. thread or virtual core: number of threads that can run on parallel on one CPU if the (intel-)processor is able to perform hyperthreading the number of virtual cores is twice the number of physical cores (I am not sure how other processor vendors call this feature) To see what type of processor/CPU your computer system has, use this Linux command: cat /proc/cpuinfo As you can see, all you have to do is use the Linux cat command on this special /proc/cpuinfo file on your Linux system.core or physical core: number of physical calculation units in the CPU.processor: the whole piece of hardware (e.g.Since everyone uses cores, CPU and processor in another context, I introduce a nomenclature for my answer here: Thus, "number behind cpu cores" x "number behind physical id + 1" is the number of physical cores one our node (8 x (3 + 1)). > cat /proc/cpuinfo | grep "physical id" | tail -1 > cat /proc/cpuinfo | grep -c "cpu cores" This is the output I get: > cat /proc/cpuinfo | grep -m 1 "cpu cores" cat /proc/cpuinfo Processor : AArch64 Processor rev 3 (aarch64) processor : 0 processor : 1 processor : 2 processor : 3 processor : 4 processor : 5 processor : 6 processor : 7 Features : fp asimd evtstrm aes pmull sha1 sha2 crc32 CPU implementer : 0x41 CPU architecture: AArch64 CPU variant : 0x0 CPU part : 0xd03 CPU revision : 3 Hardware. If we have such a setup, we need to consider the row physical id in cat /proc/cpuinfo. Thus, we get 64 'packages' of information. I just looked onto one node of a computing cluster, on which I am currently working: 1 node has 4 CPUs (Intel Xeon) with each 8 physical cores each CPU supports hyptherthreading therefore, each CPU has 16 virtual cores summing it up, the one node has 32 physical and 64 virtual cores Ĭat /proc/cpuinfo prints out information for each virtual core. You could also take the last found processor number and increment it by one > cat /proc/cpuinfo | grep "processor" | tail -1 Number of virtual cores: > cat /proc/cpuinfo | grep -l "cpu cores" Number of physical cores: > cat /proc/cpuinfo | grep -m 1 "cpu cores" Lets see what I get: > cat /proc/cpuinfo | grep "cpu cores" The CPU Information in any machine includes information about the processor, the vendor details, model name, architecture, speed of processing, etc. I have got a Intel(R) Core(TM) i7-3740QM CPU 2.70GHz (4 physical cores, hyperthreading). Thus, if you want to have the number of physical core, you just take the first occurrence of the line cpu cores, which is > cat /proc/cpuinfo | grep -m 1 "cpu cores"Īlternatively, if you are looking for the number of virtual cores, you count the number of times the line cpu cores is found, which is > cat /proc/cpuinfo | grep -c "cpu cores" But it prints out this information for each virtual core. The command cat /proc/cpuinfo should print out the number of physical cores in the line cpu cores. This may be the case if you work on a computing cluster or on a high-end desktop workstation for CAD/Engineering-purposes. See section "Several CPUs per mainboard". If you have more than one CPU/processor (in this sense) on your mainboard this does not properly work. 2x number of physical cores with hyper threading): > cat /proc/cpuinfo | grep -c "cpu cores" The number of physical cores: > cat /proc/cpuinfo | grep -m 1 "cpu cores" ![]()
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