This is the CPU stepping number. On Linux it can be read from /proc/cpuinfo Programmatically it can be accessed by using cpuid instruction: https://github.com/opcm/pcm/blob/d6be39f33fa66b8e1acbc997d445502c13d15b8c... Best regards, Roman From: Perfmon-discuss [mailto:perfmon-discuss-bounces@lists.01.org] On Behalf Of Karthik Ganesan Sent: Tuesday, April 30, 2019 00:38 To: perfmon-discuss(a)lists.01.org Cc: Tim Merrifield <timothym(a)vmware.com&gt;; Jim Hsu <hjim(a)vmware.com&gt; Subject: [Perfmon-discuss] Family-model information Hi, I am looking at https://download.01.org/perfmon/mapfile.csv. This is a very useful resource and I would like to thank the contributors. I have a quick question related to SKX and CLN info in this mapping file. SKX and CLX have an extra field (notice the info in square brackets) after family-model: GenuineIntel-6-85,V9,/KNM/KnightsLanding_matrix_V9.json,offcore GenuineIntel-6-85,V9,/KNM/KnightsLanding_uncore_V9.json,uncore GenuineIntel-6-55-[01234],V1.12,/SKX/skylakex_core_v1.12.json,core GenuineIntel-6-55-[01234],V1.12,/SKX/skylakex_matrix_v1.12.json,offcore GenuineIntel-6-55-[01234],V1.12,/SKX/skylakex_fp_arith_inst_v1.12.json,fp_arith_inst GenuineIntel-6-55-[01234],V1.12,/SKX/skylakex_uncore_v1.12.json,uncore GenuineIntel-6-55-[01234],V1.12,/SKX/skylakex_uncore_v1.12_experimental.json,uncore experimental GenuineIntel-6-55-[56789ABCDEF],V1.00,/CLX/cascadelakex_core_v1.00.json,core GenuineIntel-6-55-[56789ABCDEF],V1.00,/CLX/cascadelakex_fp_arith_inst_v1.00.json,fp_arith_inst GenuineIntel-6-55-[56789ABCDEF],V1.00,/CLX/cascadelakex_uncore_v1.00.json,uncore GenuineIntel-6-55-[56789ABCDEF],V1.00,/CLX/cascadelakex_uncore_v1.00_experimental.json,uncore experimental GenuineIntel-6-7A,V1.01,/GLP/goldmontplus_core_v1.01.json,core GenuineIntel-6-7A,V1.01,/GLP/goldmontplus_fp_arith_inst_v1.01.json,fp_arith_inst Is there some documentation on what this field means and how this can be retrieved from the hardware for identification purposes? Thanks, Karthik Intel Deutschland GmbH Registered Address: Am Campeon 10-12, 85579 Neubiberg, Germany Tel: +49 89 99 8853-0, www.intel.de Managing Directors: Christin Eisenschmid, Gary Kershaw Chairperson of the Supervisory Board: Nicole Lau Registered Office: Munich Commercial Register: Amtsgericht Muenchen HRB 186928

4 is a Skylake stepping Cascade lake B1 has stepping 7 in /proc/cpuinfo Best regards, Roman -------- Original message -------- From: Karthik Ganesan <ganesank(a)vmware.com&gt; Date: 4/30/19 18:49 (GMT+01:00) To: "Dementiev, Roman" <roman.dementiev(a)intel.com&gt;, perfmon-discuss(a)lists.01.org Cc: Tim Merrifield <timothym(a)vmware.com&gt;, Jim Hsu <hjim(a)vmware.com&gt; Subject: RE: Family-model information Hi Roman, Thank you for the information. The fields in the mapping file for Skylake is [1234] and cascade lake is [56789ABCDEF]. But, the stepping I am seeing is 4 and B1 for Skylake and Cascade lake respectively. Can you please provide some more details on how to connect them? Regards, Karthik From: Dementiev, Roman <roman.dementiev(a)intel.com&gt; Sent: Tuesday, April 30, 2019 6:17 AM To: Karthik Ganesan <ganesank(a)vmware.com&gt;; perfmon-discuss(a)lists.01.org Cc: Tim Merrifield <timothym(a)vmware.com&gt;; Jim Hsu <hjim(a)vmware.com&gt; Subject: RE: Family-model information This is the CPU stepping number. On Linux it can be read from /proc/cpuinfo Programmatically it can be accessed by using cpuid instruction: https://github.com/opcm/pcm/blob/d6be39f33fa66b8e1acbc997d445502c13d15b8c... Best regards, Roman From: Perfmon-discuss [mailto:perfmon-discuss-bounces@lists.01.org] On Behalf Of Karthik Ganesan Sent: Tuesday, April 30, 2019 00:38 To: perfmon-discuss@lists.01.org<mailto:perfmon-discuss@lists.01.org> Cc: Tim Merrifield <timothym@vmware.com<mailto:timothym@vmware.com>>; Jim Hsu <hjim@vmware.com<mailto:hjim@vmware.com>> Subject: [Perfmon-discuss] Family-model information Hi, I am looking at https://download.01.org/perfmon/mapfile.csv<https://nam04.safelinks.pr...;. This is a very useful resource and I would like to thank the contributors. I have a quick question related to SKX and CLN info in this mapping file. SKX and CLX have an extra field (notice the info in square brackets) after family-model: GenuineIntel-6-85,V9,/KNM/KnightsLanding_matrix_V9.json,offcore GenuineIntel-6-85,V9,/KNM/KnightsLanding_uncore_V9.json,uncore GenuineIntel-6-55-[01234],V1.12,/SKX/skylakex_core_v1.12.json,core GenuineIntel-6-55-[01234],V1.12,/SKX/skylakex_matrix_v1.12.json,offcore GenuineIntel-6-55-[01234],V1.12,/SKX/skylakex_fp_arith_inst_v1.12.json,fp_arith_inst GenuineIntel-6-55-[01234],V1.12,/SKX/skylakex_uncore_v1.12.json,uncore GenuineIntel-6-55-[01234],V1.12,/SKX/skylakex_uncore_v1.12_experimental.json,uncore experimental GenuineIntel-6-55-[56789ABCDEF],V1.00,/CLX/cascadelakex_core_v1.00.json,core GenuineIntel-6-55-[56789ABCDEF],V1.00,/CLX/cascadelakex_fp_arith_inst_v1.00.json,fp_arith_inst GenuineIntel-6-55-[56789ABCDEF],V1.00,/CLX/cascadelakex_uncore_v1.00.json,uncore GenuineIntel-6-55-[56789ABCDEF],V1.00,/CLX/cascadelakex_uncore_v1.00_experimental.json,uncore experimental GenuineIntel-6-7A,V1.01,/GLP/goldmontplus_core_v1.01.json,core GenuineIntel-6-7A,V1.01,/GLP/goldmontplus_fp_arith_inst_v1.01.json,fp_arith_inst Is there some documentation on what this field means and how this can be retrieved from the hardware for identification purposes? Thanks, Karthik Intel Deutschland GmbH Registered Address: Am Campeon 10-12, 85579 Neubiberg, Germany Tel: +49 89 99 8853-0, www.intel.de<http://www.intel.de> Managing Directors: Christin Eisenschmid, Gary Kershaw Chairperson of the Supervisory Board: Nicole Lau Registered Office: Munich Commercial Register: Amtsgericht Muenchen HRB 186928 Intel Deutschland GmbH Registered Address: Am Campeon 10-12, 85579 Neubiberg, Germany Tel: +49 89 99 8853-0, www.intel.de Managing Directors: Christin Eisenschmid, Gary Kershaw Chairperson of the Supervisory Board: Nicole Lau Registered Office: Munich Commercial Register: Amtsgericht Muenchen HRB 186928