Known Issues

NVIDIA ConnectX-5 Adapter Cards Firmware Release Notes v16.35.3502 LTS

The following sections describe known issues in firmware releases and possible workarounds.

Internal Ref.

Issue

3327881

Description: On Quantum unmanaged platforms, when using FDR speed with 1m Copper cable MCP1600-E001, on rare occasions, high effective errors may observed.

Keywords: BER

Workaround: N/A

Discovered in Version: 27.2010.4210

3047036

Description: On rare occasions, there can be long link up time on active copper cables MCA1J00-H003E.

Workaround: N/A

Keywords: Cables, MCA1J00-H003E

Discovered in Version: 27.2010.4010

2278846

Description: On rare occasions, when using Quantum systems with Optical cables MFS1S00-H003E and MFS1S00-H030E, the link up time may take up to 100 seconds.

Workaround: N/A

Keywords: Optical Cables

Discovered in Version: 27.2010.2036

2355994

Description: In AOCs MFS1S00-H0xx-LL andsplitter cables MFS1S50-H0xxE-LL, effective BER of 1e-12 in EDR speed may be observed.

Workaround: N/A

Keywords: Cables, BER

Discovered in Version: 27.2008.2102

2127531

Description: When using H-cable MFS1S90 with HDR speed in split mode, the link, on rare occasion, goes down.

Workaround: N/A

Keywords: Cables, Link

Discovered in Version: 27.2008.1300

2917504

Description: On 2KM HDR transceiver, MMS1W50-HM, QM87xx-HS2R (1U switch with C2P air flow) support power consumption of up to 6W per port.

Workaround: N/A

Keywords: QM87xx, Cables

2223568

Description: When using active copper cables, link down counter may be observed on occasion.

Workaround: N/A

Keywords: Active Copper Cables

Discovered in Version: 27.2008.0232

2109975

Description: Occasionally, EDR linkup time might take up to 1 minute when using Amphenol 100G (EDR) optical cables.

Workaround: N/A

Keywords: Cables, EDR

Discovered in Version: 27.2008.0232

2239632

Description: EDR linkup time might take up to 50sec when using HDR optical cable.

Workaround: N/A

Keywords: Cables, EDR

Discovered in Version: 27.2008.0232

2145881

Description: Occasionally, when using Active Fiber Splitter cables (OPNs: MFS1S90-Hxxx), unclean RAW BER (10e-6) might be seen.

Workaround: N/A

Keywords: Cables, BER

Discovered in Version: 27.2008.0232

2145881

Description: FDR link is unstable when using an FDR cable in ports: #27-#34.

Workaround: N/A

Keywords: FDR, cables

Discovered in Version: 27.2008.0232

2057793

Description: Congestion profiles in VS-MAD PortProfileSetting support only fixed mode. Percentage mode is not supported.

Workaround: N/A

Keywords: DCQCN Congestion Control

Discovered in Version: 27.2007.0300

1959529

Description: When HDR Active Copper cables are used between Quantum switches, or between Quantum switch and ConnectX-6 HCA, the counter indicating ‘Link Down’ may have a value other than zero, after the first time the cable is connected. As this may happened only at the first time, it is recommend to clear the counters after the cluster is brought up.

Workaround: N/A

Keywords: Cables

Discovered in Version: 27.2000.3276

1856717

Description: High BER may occur when connecting cables of type 0.5/1m DAC to an HDR speed.

Workaround: N/A

Keywords: Cables

Discovered in Version: 27.2000.1886

-

Description: The supported length of HDR copper cables is currently up to 2M.

Workaround: N/A

Keywords: HDR cables

-

Description: Although the effective BER (after FEC) is expected to meet our design targets (e.g. 10e-14 or lower), occasionally it may be higher.

Workaround: N/A

Keywords: Cables

-

Description: The following features are currently not supported on Quantum-based systems:

  • IB Router

  • Congestion Control

  • Voltage reading via MVCR

Workaround: N/A

Keywords: Quantum

955641

Description: VL_HIGH_LIMIT is not affecting the VL arbiter as expected.

Workaround: Arbitration table should be set using only the low priority VL arbitration table.

Keywords: VL Arbitration

1249608

Description: Configuring weight "0" for VL, results in unexpected behavior.

Workaround: Arbitration table should be configured with weights other than "0".

Keywords: VL Arbitration

-

Description: Module info page in Diagnostics Data VS-MAD is not supported

Workaround: N/A

Keywords: Diagnostics Data VS-MAD

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