I'm trying the Intel PCM tools on the Mohon Peak CRB (ATOM Rangeley) and I'm facing a problem when I'm using the pcm-memory.x tool with an external program.
Here some logs:
[root@mohon_pag tmpd]# /usr/local/bin/pcm-memory.x -- /usr/sbin/send_frame_lin
Intel(r) Performance Counter Monitor: Memory Bandwidth Monitoring Utility V2.10 (2015-11-17 09:01:38 +0100 ID=cd66c34)
Copyright (c) 2009-2015 Intel Corporation
This utility measures memory bandwidth per channel or per DIMM rank in real-time
Number of logical cores: 8
Number of online logical cores: 1
Offlined cores: 1 2 3 4 5 6 7
Num sockets: 1
Physical cores per socket: 8
Core PMU (perfmon) version: 3
Number of core PMU generic (programmable) counters: 2
Width of generic (programmable) counters: 40 bits
Number of core PMU fixed counters: 3
Width of fixed counters: 40 bits
Nominal core frequency: 2400000000 Hz
Package thermal spec power: 0 Watt; Package minimum power: 0 Watt; Package maximum power: 0 Watt;
Access to Intel(r) Performance Counter Monitor has denied (no MSR or PCI CFG space access).
[root@mohon_pag tmpd]# ls -als /dev/cpu/0/msr
0 crw-rw----. 1 root root 202, 0 Jan 13 06:15 /dev/cpu/0/msr
What could be the problem ?
Definitely pcm-memory tool is not supported on Atom (and memory metrics in pcm.x are also not supported on Atom). I wonder why there is no message that tells that.Does it appear if you online all cores?
Thanks for the hint.
I was also wondering that the pcm tool does display any warning message this time. I was first trying it on an old product powered by a Pentium 3 processor and saw the message that this processor was not supported.
Unfortunately we can not use more than 1 core. Our application is very (very) old and was not written for SMP systems.
One thing remains:
What indeed is then suported for the Atom Rangeley C2338 ?