---
name: "opacabletest"
section: "8"
platform: "linux"
package: "opa-fastfabric"
version: "10.10.3.0.11-1+b2"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/opacabletest"
---

# opacabletest(8)

## NAME

opacabletest

**(Switch)** Initiates or stops Cable Bit Error Rate stress tests for Intel(R) Omni-Path Host Fabric Interface (HFI)-to-switch links and/or ISLs.

## Syntax

opacabletest \[-C\|-A\] \[-c  *file*\] \[-f  *hostfile*\] \[-h  *'hosts'*\] \[-n  *numprocs*\]\

\[-t *portsfile*\] \[-p  *ports*\] \[start\|start\_fi\|start\_isl\|stop\|stop\_fi\|\
 stop\_isl\] ...

## Options

- \--help

  Produces full help text.

- \-C

  Clears error counters.

- \-A

  Forces the system to clear hardware error counters. Implies -C.

- \-c *file*

  Specifies the error thresholds configuration file. Default is /etc/opa/opamon.si.conf file. Only used if -C or -A specified.

- \-f *hostfile*

  Specifies the file with hosts to include in HFI -to-SW test. Default is /etc/opa/hosts file.

- \-h *hosts*

  Specifies the list of hosts to include in HFI -SW test.

- \-n *numprocs*

  Specifies the number of processes per host for HFI -SW test.

- \-t *portsfile*

  Specifies the file with list of local HFI ports used to access fabrics when clearing counters. Default is /etc/opa/ports file.

- \-p *ports*

  Specifies the list of local HFI ports used to access fabrics for counter clear.

-

  Default is first active port. The first HFI in the system is 1. The first port on an HFI is 1. Uses the format hfi:port,\
   for example:

  - 0:0

    First active port in system.

  - 0:y

    Port *y* within system.

  - x:0

    First active port on HFI *x*.

  - x:y

    HFI *x*, port *y*.

- start

  Starts the HFI -SW and ISL tests.

- start\_fi

  Starts the HFI -SW test.

- start\_isl

  Starts the ISL test.

- stop

  Stops the HFI -SW and ISL tests.

- stop\_fi

  Stops the HFI -SW test.

- stop\_isl

  Stops the ISL test.

The HFI -SW cable test requires that the **FF\_MPI\_APPS\_DIR** is set, and it contains a pre-built copy of the mpi\_apps for an appropriate message passing interface (MPI).

The ISL cable test started by this tool assumes that the master Host Subnet Manager (HSM) is running on this host. If using the Embedded Subnet Manager (ESM), or if a different host is the master HSM, the ISL cable test must be controlled by the switch CLI, or by Intel(R) Omni-Path Fabric Suite FastFabric on the master HSM respectively.

## Examples

opacabletest -A start\

opacabletest -f good -A start\

opacabletest -h 'arwen elrond' start\_fi\

HOSTS='arwen elrond' opacabletest stop\

opacabletest -A

## Environment Variables

The following environment variables are also used by this command:

- **HOSTS**

  List of hosts, used if -h option not supplied.

- **HOSTS\_FILE**

  File containing list of hosts, used in absence of -f and -h.

- **PORTS**

  List of ports, used in absence of -t and -p.

- **PORTS\_FILE**

  File containing list of ports, used in absence of -t and -p.

- **FF\_MAX\_PARALLEL**

  Maximum concurrent operations.