Installed NIC in a PCI-X slot
Case 2: Rack-mounted host
If the rack-mounted host is a 2U or larger, the low-profile PCI-short-card
Myrinet/PCI-X NIC with low-profile PCI faceplate may not require a riser card
for installation. If at all possible, avoid the use of a riser card. If you must use a
riser card and the riser card has multiple slots, insert the Myrinet/PCI-X NIC into
the riser card slot closest to the PCI-X slot on the mother board.
We recommend the PCI-X slot closest to the PCI chipset for the installation of the
Myrinet/PCI-X NIC. For best performance, the Myrinet/PCI-X NIC should be
inserted into a PCI-X slot that runs at maximum speed (133MHz) and should not
share the PCI bus with another PCI device. Note that some vendors ship their
mother boards with the speed of the PCI-X slots reduced, and you must manually
adjust the jumper next to the PCI-X slots to run at full speed. (In the following
pictures, the jumper is blue and located on the left side of the PCI slots.) Refer to
the hardware specifications of the mother board for details of the PCI slots.
© 2005 Myricom, Inc. DRAFT
8
