DB2 - Problem description
Problem IT28412 | Status: Closed |
DB2 FAILS ON SOME AVX-512 CAPABLE CPUS | |
product: | |
DB2 FOR LUW / DB2FORLUW / B10 - DB2 | |
Problem description: | |
Db2 V11.1.4.4 utilizes the following Intel AVX-512 instructions extensions: AVX512DP,AVX512F,AVX512BW,AVX512CD,AVX512VL Not all Intel AVX-512 capable CPUs support all these extensions. Db2 currently only checks for AVX512F and AVX512CD. On Linux the supported instruction extensions can be verified using cat /proc/cpuinfo | grep flags | |
Problem Summary: | |
**************************************************************** * USERS AFFECTED: * * Db2 V11.1.4.4 users using certain Intel AVX512 CPUs. * **************************************************************** * PROBLEM DESCRIPTION: * * See Error Description * **************************************************************** * RECOMMENDATION: * * Upgrade to next release. * **************************************************************** | |
Local Fix: | |
db2set DB2_CPU_FEATURE_DISABLE=AVX512 | |
Solution | |
Workaround | |
not known / see Local fix | |
Timestamps | |
Date - problem reported : Date - problem closed : Date - last modified : | 11.03.2019 18.01.2020 18.01.2020 |
Problem solved at the following versions (IBM BugInfos) | |
Problem solved according to the fixlist(s) of the following version(s) |