Troubleshooting guide

MX libraries are installed in <install_path>/lib32 and the 64-bit MX libraries are

installed in <install_path>/lib64. The <install_path>/lib directory is a symbolic link to

either lib64 or lib32 depending on the native wordsize detected by configure. E.g., on

most ppc64 distributions, gcc defaults to 32-bit, which means that lib links to lib32.

However, on most x86_64 distributions, gcc defaults to 64-bit, so lib links to lib64.

Unless specified on the configure line, MX builds 32-bit libraries on 32-bit architectures

(i386, ppc) and 64-bit libraries on 64-bit architectures (ia64, AMD64, ppc64). It is

possible to build both by using the --enable-32b and --enable-64b configure flags.

Next, you must run

su root

<install_path>/sbin/mx_local_install

<install_path>/sbin/mx_start_stop start

echo <install_path>/lib32 >> /etc/ld.so.conf

echo <install_path>/lib64 >> /etc/ld.so.conf

echo <install_path>/lib >> /etc/ld.so.conf && /sbin/ldconfig

on each machine to perform local install steps, to load the modules, and to start a mapper

for each Myrinet NIC contained in the machine. If applicable, the mx_start_stop script

is also available in /etc/init.d/mx. The ldconfig line is optional, and adds the MX library

directory to the system library search path. If you do not do this, individual users will

need to either manage their LD_LIBRARY_PATH environment variable or link their

programs with an -rpath option for the dynamic linker to locate the MX shared library.

When the hardware is connected through a cable to another operating component and the

MX-2G firmware has been loaded, a green “link” LED and a yellow/amber “Lanai” LED

will illuminate on NICs and a green “link” LED will illuminate on connected ports on the

line cards (on the TFT display). If you do not see a green “link” LED illuminated on a

component (port on a NIC or port on a switch line card), refer to the following

diagnostics:

• If you do not see any green “link” LEDs illuminated, is the switch powered

on?

• If you do not see green “link” LEDs illuminated on only a specific line card, is

the line card properly seated in the enclosure? (Refer to the “Guide to

Switches and Switch Networks” for the proper procedure to insert/remove a

line card.)

• If you do not see a green “link” LED on a specific port on a NIC or port on a

line card, is the port connected by a cable to another component?

• If a NIC port does not have a green link LED illuminated, is its host powered

on?

• Have you tried disconnecting and reconnecting the cable at both ends (at the

NIC port and the port on the line card)?

• Have you tried a different cable or a different port on the line card?