Public bug reported:
Generic Linux kernel flavor is official Ubuntu Server Linux kernel flavor.
It is supposed to be run on both workstations and servers.
Generic kernel configuration supports max 256 CPUs:
root@ubuntu02:~# grep CONFIG_NR_CPUS /boot/config-$(uname -r)
CONFIG_NR_CPUS=256
While running on Intel KNL with Hyper-Threading enabled it cannot
accommodate cores over 256.
Probably server flavor should support 512 cores, like it is in RedHat.
Logs attached.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Incomplete
** Tags: 16.10
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https://bugs.launchpad.net/bugs/1656033
Title:
Yakkety Server cannot handle more than 256 cores
Status in linux package in Ubuntu:
Incomplete
Bug description:
Generic Linux kernel flavor is official Ubuntu Server Linux kernel flavor.
It is supposed to be run on both workstations and servers.
Generic kernel configuration supports max 256 CPUs:
root@ubuntu02:~# grep CONFIG_NR_CPUS /boot/config-$(uname -r)
CONFIG_NR_CPUS=256
While running on Intel KNL with Hyper-Threading enabled it cannot
accommodate cores over 256.
Probably server flavor should support 512 cores, like it is in RedHat.
Logs attached.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1656033/+subscriptions
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