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intel / intel-cmt-cat

User space software for Intel(R) Resource Director Technology
http://www.intel.com/content/www/us/en/architecture-and-technology/resource-director-technology.html
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Error retrieving APICID info #151

Closed Chinmay-Gupta closed 4 years ago

Chinmay-Gupta commented 4 years ago

Hi, I'm facing issues with the program: [root@slc13mwp view_storage]# pqos NOTE: Mixed use of MSR and kernel interfaces to manage CAT or CMT & MBM may lead to unexpected behavior. ERROR: Couldn't retrieve APICID structure information!ERROR: CPU topology detection error!ERROR: cpuinfo_init() error -14 Error initializing PQoS library! [root@slc13mwp view_storage]# pqos -I NOTE: Mixed use of MSR and kernel interfaces to manage CAT or CMT & MBM may lead to unexpected behavior. ERROR: Couldn't retrieve APICID structure information!ERROR: CPU topology detection error!ERROR: cpuinfo_init() error -14 Error initializing PQoS library! [root@slc13mwp view_storage]# pqos -s -V NOTE: Mixed use of MSR and kernel interfaces to manage CAT or CMT & MBM may lead to unexpected behavior. ERROR: Couldn't retrieve APICID structure information!ERROR: CPU topology detection error!ERROR: cpuinfo_init() error -14 Error initializing PQoS library! [root@slc13mwp view_storage]# pqos -d NOTE: Mixed use of MSR and kernel interfaces to manage CAT or CMT & MBM may lead to unexpected behavior. ERROR: Couldn't retrieve APICID structure information!ERROR: CPU topology detection error!ERROR: cpuinfo_init() error -14 Error initializing PQoS library!

[root@slc13mwp view_storage]# cat /proc/cmdline BOOT_IMAGE=/vmlinuz-4.14.35-1902.9.2.el7uek.x86_64 root=UUID=e1efd95f-0334-4dcd-8c47-15c078a39701 ro crashkernel=auto numa=off transparent_hugepage=never rdt=cmt,mbmtotal,mbmlocal,l3cat,l3cdp,l2cat,mba [root@slc13mwp view_storage]# cat /boot/config-4.14.35-1902.9.2.el7uek.x86_64 | grep CONFIG_INTEL_RDT CONFIG_INTEL_RDT=y

Please help me solve this issue. I seem to have installed my configuration correctly. Using an Intel(R) Xeon(R) CPU E5-2699C v4 @ 2.20GHz

tkanteck commented 4 years ago

Is 'pqos' tool executed within a virtual machine?

Chinmay-Gupta commented 4 years ago

Yes - is the tool not supposed to run from a VM ?

tkanteck commented 4 years ago

No, not really. I am not aware of any hypervisors allowing for RDT control from within a VM either through MSR or OS interface. Maybe, just maybe, Xen allows for some control there.

Chinmay-Gupta commented 4 years ago

Okay - I'll try exploring Xen options. Thanks !

tkanteck commented 4 years ago

It is also interesting that the hypervisor used here doesn't support pretty standard CPUID leaf for APICID enumeration. Good luck with Xen exploration! Please come back here and post results of your exploration.