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SPEC PTDaemon<span class="reg">™</span> Interface


PTDaemon® Interface

The PTDaemon® interface is used to control benchmarks that contain a power measurement component. This interface controls the power analyzers and is updated as needed to support new analyzers and features. The current version is 1.11.1, released on September 10th, 2024.

The PTDaemon interface is distributed as part of selected SPEC licensed software; the SPECpower_ssj® 2008 benchmark, the SERT® suite and SPECvirt_sc® 2013. Each benchmark has its own independent requirement for a minimum version of the PTDaemon interface.

To obtain the latest version, go to the PTDaemon update pages. (https://www.spec.org/power/docs/SPECpower-PTD-Update_Process.html)



Device Ordering Considerations

Multiple SPEC benchmarks provide infrastructure software to connect, control, and collect data from power and temperature measurement devices.  All measurement devices must be equipped with at least one of the communication interfaces supported by the benchmark. 

When ordering devices, be aware that some of these devices can be ordered in multiple configurations, including configurations with no interface or an unsupported communication interface.  Only base configurations of the devices listed below are supported and must include a supported communications interface.  Additional options such as external current transformers are presently not supported.  Please contact SPEC support if you have questions.

Power analyzers are available with wide ranges of capabilities and capacities.  Computer systems have a wide range of power requirements.  Global standards for line voltage are quite different from one country to another.  Therefore, users should be aware that any one combination of the three above contributing factors may not provide the capability or required accuracy to measure very high or sometimes very low power. 

The analyzers listed below have been tested and found to function well for a relatively narrow range of power provider and power consumption conditions, essentially for volume server class computers in the one to four socket range, including similar blade configurations.   The list of accepted power analyzers below also indicates which analyzers have specific limitations that impact compliance with the run and reporting rules for SPEC benchmarks.  When using one of these analyzers, one must ensure that the listed limitations are not violated.  Results will be invalidated in cases where one of these analyzers was used and the System Under Test (SUT) exceeded the current limits of said analyzer. 

More detailed properties, limitations and setup instructions specific to each power analyzer may be found in the Power and Temperature Measurement Setup Guide, formerly called the Hardware Setup Guide.

SPEC recommends that the user consult with a qualified electrical engineer prior to purchase of a power analyzer.

BE SURE to read, understand, and follow all of the safety rules and installation instructions that come with your power analyzer and system under test (SUT).

PLEASE NOTE:   No current sensors or shunts external to the analyzer are allowed in submissions.   They must be either disabled or removed.  Also, auto ranging cannot be used.  This applies to all analyzers.


List of Accepted Power Analyzers


Manufacturer

Model
First Supported in PTDaemon Version *

Restrictions on Use
Chroma
66202
v1.3.9
Valid only for low shunt ranges (0.01, 0.1, 0.4, 2.0 A RMS) and the 20A RMS high shunt range.
Chroma
66203 & 66204
v1.6.3
Only the use of one channel at a time is supported.
DC
v1.7.1
See above.
Chroma
66205
v1.9.0

DC
v1.9.0

Hioki
3334
v1.3.10
Valid only for load currents less than 14.167A.  With PTDaemon interface versions >=v1.4.0 and Hioki firmware version v1.10, the maximum valid load current must be less than 17.334A.
Hioki
PW3335
v1.8.0
Maximum valid load currents less than 20A
DC
v1.8.1

Hioki PW3336

Multichannel
v1.10.0
Maximum valid load currents less than 33.3A/channel
1-Channel
v1.8.0
Maximum valid load currents less than 33.3A/channel
Hioki PW3337

Multichannel
v1.10.0
Maximum valid load currents less than 33.3A/channel
1-Channel
v1.8.0
Maximum valid load currents less than 33.3A/channel
Infratek
107A-1
v1.2
Valid only for load currents less than half the selected current range in order to satisfy the required minimum crest factor value of 3.
Instek
GPM-8212 v1.2
Valid only for load currents less than 10A.
Instek
GPM-8213 v1.9.2

Instek
GPM-8310 v1.9.2

Newtons4th PPA5x0 v1.6.2
Only the use of one channel at a time is supported.
DC
v1.7.0
See above.
Newtons4th
PPA15x0 v1.4.2
Only the use of channel 1 is supported previous to PTDaemon interface v1.6.1. Channels 1-3 supported with PTDaemon interface v1.6.1. HC and LC Models supported with 1.6.2
Newtons4th
PPA55x0 v1.6.1
Only the use of channel 1 is supported. HC and LC Models supported with 1.6.2
Tektronix PA1000 v1.7.1

DC
v1.7.1

Voltech
PM1000+
v.1.4.1
Requires firmware version 4.22 or newer. Please align to PTDaemon interface v1.6.0 if utilizing this analyzer.
Xitron 2801
v1.4.0

Xitron 2802
v1.3
Only the use of one channel at a time is supported.
Yokogawa WT210 v1.0
Minimum firmware revision required is v1.11.In the case where an external current sensor option is installed, it must be disabled,  and, in this scenario, the minimum PTDaemon interface version required is v1.3.10.
DC
v1.7.0
See above
Yokogawa WT310 & WT310e v1.6.0, v1.8.0

DC
v1.7.0

Yokogawa WT330 & WT330e

Multichannel
v1.9.2
2 or 3 consecutive channels may be used.
1-Channel
v1.7.0

Yokogawa WT500

Can be used in 1-Channel or multichannel mode.  Please check to see if your benchmark harness supports multichannel modes yet.
1-Channel
v1.3.9
Only the use of one channel at a time is supported.
Multichannel
v1.10.0

DC
v1.7.0

Yokogawa WT1800 v1.4.2
Only the use of one channel at a time is supported. In the case where an external current sensor option is installed, it must be disabled.
WT1800E v1.9.0
Only the use of one channel at a time is supported. In the case where an external current sensor option is installed, it must be disabled.
Yokogawa WT5000

Can be used in 1-Channel or multichannel mode.
1-Channel
v1.9.1
Only the use of one channel at a time is supported.
DC
v1.9.1

Multichannel
v1.11.1

ZES Zimmer LMG95 v1.2

DC
v1.7.0

ZES Zimmer LMG450
Can be used in 1-Channel or multichannel mode.
1-Channel
v1.0

Multichannel
v1.11.0

ZES Zimmer LMG500
Can be used in 1-Channel or multichannel mode.
1-Channel
v1.2

Multichannel
v1.11.0

ZES Zimmer LMG610 v1.9.2 Channel module types A, B, and C are supported.
ZES Zimmer LMG611 v1.11.0 Channel module types A, B, and C are supported.
ZES Zimmer LMG641
Can be used in 1-Channel or multichannel mode.
1-Channel
v1.9.2

Multichannel
v1.11.0

ZES Zimmer LMG671
Can be used in 1-Channel or multichannel mode.
1-Channel
v1.9.2

Multichannel
v1.11.0

ZLG PA310
Can be used in 1-Channel mode.
1-Channel
v1.11.1

DC
v1.11.1

* The minimum PTDaemon interface version required for publishable results changes over time and is discussed in the PTDaemon Interface Update Process .

Please see Compatibility Across OS and Connection Types for information on OS and connection type support details for each device.

List of Accepted Temperature Sensors


Manufacturer

Model
First Supported in
PTDaemon Version
Digi
Watchport/H v1.0
Digi
Watchport/T v1.4.2
Temperature@lert
TM-STD30 v1.0
iButtonLink
LinkUSBi + T-Sense(R) v1.6.0
iButtonLink
LinkUSBi + T-Probe v1.6.0
PCsensor.com
USB9097 + DS18B20 v1.9.0
Cleware
USB-Temp v1.10.0
TFA Dostmann
USB-Temp v1.10.0


Please see Compatibility Across OS and Connection Types for information on OS and connection type support details for each device.

SPEC Acceptance Process for Power Analyzers

A process exists for a SPEC member or licensee to add software support for a power analyzer to the SPEC benchmark infrastructure and to submit tests for review and possible inclusion by SPEC as an accepted device.  Please see the Power Analyzer Acceptance Process document for the acceptance process.