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pytorch / cpuinfo

CPU INFOrmation library (x86/x86-64/ARM/ARM64, Linux/Windows/Android/macOS/iOS)
BSD 2-Clause "Simplified" License
1.01k stars 319 forks source link

There is a bug. The order is reversed. #23

Closed pengcuo closed 5 years ago

pengcuo commented 5 years ago

sdm660_64:/data/pengcuo # cat /proc/cpuinfo
Processor : AArch64 Processor rev 4 (aarch64) processor : 0 BogoMIPS : 38.40 Features : fp asimd evtstrm aes pmull sha1 sha2 crc32 CPU implementer : 0x51 CPU architecture: 8 CPU variant : 0xa CPU part : 0x801 CPU revision : 4

processor : 1 BogoMIPS : 38.40 Features : fp asimd evtstrm aes pmull sha1 sha2 crc32 CPU implementer : 0x51 CPU architecture: 8 CPU variant : 0xa CPU part : 0x801 CPU revision : 4

processor : 2 BogoMIPS : 38.40 Features : fp asimd evtstrm aes pmull sha1 sha2 crc32 CPU implementer : 0x51 CPU architecture: 8 CPU variant : 0xa CPU part : 0x801 CPU revision : 4

processor : 3 BogoMIPS : 38.40 Features : fp asimd evtstrm aes pmull sha1 sha2 crc32 CPU implementer : 0x51 CPU architecture: 8 CPU variant : 0xa CPU part : 0x801 CPU revision : 4

processor : 4 BogoMIPS : 38.40 Features : fp asimd evtstrm aes pmull sha1 sha2 crc32 CPU implementer : 0x51 CPU architecture: 8 CPU variant : 0xa CPU part : 0x800 CPU revision : 2

processor : 5 BogoMIPS : 38.40 Features : fp asimd evtstrm aes pmull sha1 sha2 crc32 CPU implementer : 0x51 CPU architecture: 8 CPU variant : 0xa CPU part : 0x800 CPU revision : 2

processor : 6 BogoMIPS : 38.40 Features : fp asimd evtstrm aes pmull sha1 sha2 crc32 CPU implementer : 0x51 CPU architecture: 8 CPU variant : 0xa CPU part : 0x800 CPU revision : 2

processor : 7 BogoMIPS : 38.40 Features : fp asimd evtstrm aes pmull sha1 sha2 crc32 CPU implementer : 0x51 CPU architecture: 8 CPU variant : 0xa CPU part : 0x800 CPU revision : 2

sdm660_64:/data/pengcuo # ./cpu-info
SoC name: Qualcomm Snapdragon 660 Cores: 0: 1 processor (0), ARM Cortex-A73 1: 1 processor (1), ARM Cortex-A73 2: 1 processor (2), ARM Cortex-A73 3: 1 processor (3), ARM Cortex-A73 4: 1 processor (4), ARM Cortex-A53 5: 1 processor (5), ARM Cortex-A53 6: 1 processor (6), ARM Cortex-A53 7: 1 processor (7), ARM Cortex-A53 Logical processors: 0 1 2 3 4 5 6 7

Maratyszcza commented 5 years ago

This is a feature, not a bug: cpuinfo sorts clusters of processors by decreasing performance, i.e. cluster 0 will be the big cluster, cluster 1 - the middle cluster, cluster 2 - the little cluster. Processors within a cluster are not sorted. If you want to use the system processor id on Linux, you can get it from cpuinfo_processor.linux_id.