#SKYLAKE PROCSSOR UBUNTU ISSUES WINDOWS#

Why Skylake processors only? Indeed, I couldnвЂ™t reproduce the crashes using SIOUвЂ™s binary on my computers at Inria, which were all running older Intel processors. Many OCaml bugs have been reported to me in the last 25 years, but this report was particularly troubling. The latest generation at the time of this writing is nicknamed Kaby Lake.) (Skylake is the nickname for what was the latest generation of Intel processors at the time. Moreover, the crashes were only observed on their most recent computers, those running Intel Skylake processors. Not at every run, but once in a while it would segfault, at different places within the code. Late April 2016, shortly after OCaml 4.03.0 was released, a Serious Industrial OCaml User (SIOU) contacted me privately with bad news: one of their applications, written in OCaml and compiled with OCaml 4.03.0, was crashing randomly. Here is how I ran into a bug in Intel Skylake processors while trying to debug mysterious OCaml failures. ThatвЂ™s what I thought too, until recently.

#SKYLAKE PROCSSOR UBUNTU ISSUES WINDOWS#

Sorting routine discards half of the data? вЂњThat might be a Windows virus!вЂќ Binary search always fails? вЂњThe Java compiler is acting funny today!вЂќ More experienced programmers know very well that the bug is generally in their code: occasionally in third-party libraries very rarely in system libraries exceedingly rarely in the compiler and never in the processor. I realize that's far from a neat approach suitable for a script, but if all you care about is the generation, you can script that part with what's given above.Instructors of вЂњIntroduction to programmingвЂќ courses know that students are willing to blame the failures of their programs on anything. There will be a line saying 'Products formerly ' that you can use to find the codename. The best way that I've found is to go to and put your model string ('i7-6600U') into the search box, select the thing that comes up (there should only be one), and then check the 'Related Products' box on the right. Unfortunately, there's no really easy way to map that information back to a nice string like 'Skylake'. Model name : Intel(R) Core(TM) i7-6600U CPU 2.60GHzДЇlags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm pni pclmulqdq est tm2 ssse3 fma cx16 xtpr sse4_1 sse4_2 movbe popcnt aes xsave osxsave avx f16c rdrand hypervisorДЄddress sizes : 36 bits physical, 48 bits virtualДЇrom this, you can see that I have a Intel(R) Core(TM) i7-6600U, which is a 6th-generation (first number following the 'i7-' part see Intel's page on processor numbers) Core-family processor. For example, I get the following: $cat /proc/cpuinfo

This produces largely the same info, but also the model name line, which will contain the processor model number.

This is unfortunately not listed in the table.ДЄn alternate command is cat /proc/cpuinfo.

There's a comment below it giving newer info (May 2015).ДЇor example, in the data above, my CPU has family 6 and model 78 (0x4E). You can compare them (after converting decimal values to hex values, or vice-versa) against this chart from Intel if you have an older CPU, but that chart hasn't been updated since 2012. The relevant values are CPU family and Model. In theory, the command you're looking for is lscpu, though it doesn't actually tell you the name of the CPU generation as a text string.

Skylake procssor ubuntu issues