[Freeipmi-users] Power statistics for Supermicro A+ 1023US-TR4 server

[Vladimir Stegailov]

Hi!

I have a question concerning FreeIPMI usage on the novel Supermicro A+
Server 1023US-TR4 with two AMD Epyc CPUs.

The BMC firmware of the corresponding H11DSU-iN motherboard has been
upgraded to the latest available version (1.30).

The FreeIPMI test shows that the power monitoring is available:

*host1:~ # ipmi-dcmi --get-dcmi-capability-info*
*DCMI Specification Conformance                     : 1.1*

*Power Management / Monitoring Support              : Available*
*In-band System Interface Channel                   : Available*
*Serial TMODE                                       : Not present*
*Out-Of-Band Secondary LAN Channel                  : Not present*

*Number of SEL entries                              : 512*
*Record Level SEL Flush upon Rollover               : Not present*
*Entire SEL Flush upon Rollover                     : Not present*
*SEL automatic rollover                             : Not present*
*DHCP Host Name                                     : Not present*
*Asset Tag                                          : Available*

*Power Management Device Slave Address              : 10h*
*Power Management Controller Device Revision        : 1*
*Power Management Controller Channel Number         : 0*

*Primary LAN Out-of-band Channel Number             : 1*
*Secondary LAN Out-of-band Channel Number           : Not supported*
*Serial Out-of-band TMODE Capability Channel Number : Not supported*

*ipmi_cmd_dcmi_get_dcmi_capability_info_enhanced_system_power_statistics_attributes:
bad completion code*

However it is not possible to get power statistics by a DCMI request (it
stops with an error):

*host1:~ # ipmi-dcmi --debug --get-system-power-statistic*
*=====================================================*
*Group Extension - Get Power Reading Request*
*=====================================================*
*[               2h] = cmd[ 8b]*
*[              DCh] = group_extension_identification[ 8b]*
*[               1h] = mode[ 8b]*
*[               0h] = mode_attributes[ 8b]*
*[               0h] = reserved[ 8b]*
*=====================================================*
*Group Extension - Get Power Reading Response*
*=====================================================*
*[               2h] = cmd[ 8b]*
*[              FFh] = comp_code[ 8b]*
*ipmi_cmd_dcmi_get_power_reading: bad completion code*

At the same time, the Supermicro tool does show power statistics:

address@hidden:~/repos/SMCIPMITool_2.20.0_build.180525_bundleJRE_Linux>
./SMCIPMITool ipmi1 ADMIN ADMIN pminfo*
* [SlaveAddress = B0h] [Module 1]*
* Item                           |                          Value *
* ----                           |                          ----- *
* Status                         |                     ON (00 00) *
* Input Voltage                  |                       225.75 V *
* Input Current                  |                          0.8 A *
* Main Output Voltage            |                        12.16 V *
* Main Output Current            |                        13.82 A *
* Temperature 1                  |                        31C/88F *
* Temperature 2                  |                       38C/100F *
* Fan 1                          |                       2624 RPM *
* Fan 2                          |                          0 RPM *
* Main Output Power              |                          168 W *
* Input Power                    |                          176 W *
* PMBus Revision                 |                           0x22 *
* PWS Serial Number              |                P1K0ACH21AN0368 *
* PWS Module Number              |                   PWS-1K02A-1R *
* PWS Revision                   |                            1.2 *

What could be the reason for this problem with FreeIPMI inability to read
power statistics?
(Unfortunately, we are not able to get any help from Supermicro with this
issue.)

Thank you.

Vlad